US20210197029A1 - Polyhedra golf ball with lower drag coefficient - Google Patents

Polyhedra golf ball with lower drag coefficient Download PDF

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US20210197029A1
US20210197029A1 US16/771,676 US201916771676A US2021197029A1 US 20210197029 A1 US20210197029 A1 US 20210197029A1 US 201916771676 A US201916771676 A US 201916771676A US 2021197029 A1 US2021197029 A1 US 2021197029A1
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faces
golf ball
polyhedron
sphere
edges
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Nikolaos Beratlis
Elias BALARAS
Kyle Squires
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Arizona Board of Regents of ASU
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    • AHUMAN NECESSITIES
    • A63SPORTS; GAMES; AMUSEMENTS
    • A63BAPPARATUS FOR PHYSICAL TRAINING, GYMNASTICS, SWIMMING, CLIMBING, OR FENCING; BALL GAMES; TRAINING EQUIPMENT
    • A63B37/00Solid balls; Rigid hollow balls; Marbles
    • A63B37/0003Golf balls
    • A63B37/007Characteristics of the ball as a whole
    • A63B37/0077Physical properties
    • AHUMAN NECESSITIES
    • A63SPORTS; GAMES; AMUSEMENTS
    • A63BAPPARATUS FOR PHYSICAL TRAINING, GYMNASTICS, SWIMMING, CLIMBING, OR FENCING; BALL GAMES; TRAINING EQUIPMENT
    • A63B37/00Solid balls; Rigid hollow balls; Marbles
    • A63B37/0003Golf balls
    • A63B37/0004Surface depressions or protrusions
    • A63B37/0006Arrangement or layout of dimples
    • AHUMAN NECESSITIES
    • A63SPORTS; GAMES; AMUSEMENTS
    • A63BAPPARATUS FOR PHYSICAL TRAINING, GYMNASTICS, SWIMMING, CLIMBING, OR FENCING; BALL GAMES; TRAINING EQUIPMENT
    • A63B37/00Solid balls; Rigid hollow balls; Marbles
    • A63B37/0003Golf balls
    • A63B37/0004Surface depressions or protrusions
    • A63B37/0007Non-circular dimples
    • AHUMAN NECESSITIES
    • A63SPORTS; GAMES; AMUSEMENTS
    • A63BAPPARATUS FOR PHYSICAL TRAINING, GYMNASTICS, SWIMMING, CLIMBING, OR FENCING; BALL GAMES; TRAINING EQUIPMENT
    • A63B37/00Solid balls; Rigid hollow balls; Marbles
    • A63B37/0003Golf balls
    • A63B37/0004Surface depressions or protrusions
    • A63B37/0007Non-circular dimples
    • A63B37/0009Polygonal
    • AHUMAN NECESSITIES
    • A63SPORTS; GAMES; AMUSEMENTS
    • A63BAPPARATUS FOR PHYSICAL TRAINING, GYMNASTICS, SWIMMING, CLIMBING, OR FENCING; BALL GAMES; TRAINING EQUIPMENT
    • A63B37/00Solid balls; Rigid hollow balls; Marbles
    • A63B37/0003Golf balls
    • A63B37/0004Surface depressions or protrusions
    • A63B37/0018Specified number of dimples
    • AHUMAN NECESSITIES
    • A63SPORTS; GAMES; AMUSEMENTS
    • A63BAPPARATUS FOR PHYSICAL TRAINING, GYMNASTICS, SWIMMING, CLIMBING, OR FENCING; BALL GAMES; TRAINING EQUIPMENT
    • A63B37/00Solid balls; Rigid hollow balls; Marbles
    • A63B37/0003Golf balls
    • A63B37/007Characteristics of the ball as a whole
    • A63B37/0077Physical properties
    • A63B37/008Diameter
    • AHUMAN NECESSITIES
    • A63SPORTS; GAMES; AMUSEMENTS
    • A63BAPPARATUS FOR PHYSICAL TRAINING, GYMNASTICS, SWIMMING, CLIMBING, OR FENCING; BALL GAMES; TRAINING EQUIPMENT
    • A63B37/00Solid balls; Rigid hollow balls; Marbles
    • A63B37/0003Golf balls
    • A63B37/007Characteristics of the ball as a whole
    • A63B37/0077Physical properties
    • A63B37/0089Coefficient of drag
    • AHUMAN NECESSITIES
    • A63SPORTS; GAMES; AMUSEMENTS
    • A63BAPPARATUS FOR PHYSICAL TRAINING, GYMNASTICS, SWIMMING, CLIMBING, OR FENCING; BALL GAMES; TRAINING EQUIPMENT
    • A63B37/00Solid balls; Rigid hollow balls; Marbles
    • A63B37/0003Golf balls
    • A63B37/0004Surface depressions or protrusions
    • A63B37/00215Volume ratio
    • AHUMAN NECESSITIES
    • A63SPORTS; GAMES; AMUSEMENTS
    • A63BAPPARATUS FOR PHYSICAL TRAINING, GYMNASTICS, SWIMMING, CLIMBING, OR FENCING; BALL GAMES; TRAINING EQUIPMENT
    • A63B37/00Solid balls; Rigid hollow balls; Marbles
    • A63B37/0003Golf balls
    • A63B37/007Characteristics of the ball as a whole
    • A63B37/0072Characteristics of the ball as a whole with a specified number of layers
    • A63B37/0074Two piece balls, i.e. cover and core

Definitions

  • the present invention relates to golf balls having a polyhedra design that can yield lower drag coefficient than a dimpled sphere.
  • the drag reduction is applicable to other sports equipment in general having a bluff body, such as the head of a golf club or a bike helmet.
  • a dimple generally refers to any curved or spherical depression in the face or outer surface of the ball.
  • the traditional golf ball as readily accepted by the consuming public, is spherical with a plurality of dimples, where the dimples are generally depressions on the outer surface of a sphere.
  • the vast majority of commercial golf balls use dimples that have a substantially spherical shape.
  • the drag coefficient is a dimensionless parameter that is used to quantify the drag force of resistance of an object in a fluid.
  • the drag force is always opposite to the direction in which the object travels.
  • FIG. 1 shows the variation of the drag coefficient, C D , as a function of Reynolds number, Re, for smooth and dimpled spheres.
  • the data were obtained by performing wind tunnel experiments of non-spinning spheres.
  • the drag coefficient shown by the solid black line
  • C D remains constant (C D ⁇ 0.5) until the Reynolds number approaches a critical value (Re cr ⁇ 300,000).
  • Re cr critical value
  • C D decreases rapidly and hits a minimum, which is an order of magnitude lower C D ⁇ 0.08.
  • With further increase in the Reynolds number the flow enters the post-critical regime characterized by turbulent boundary layers on the surface of the sphere. In this regime the drag coefficient rises slowly with increasing Reynolds number.
  • a dimpled sphere In dimpled spheres (shown by dashed and dotted black lines) the drag crisis happens at a much lower critical Reynolds number (Re ⁇ 100,000).
  • Re ⁇ 100,000 critical Reynolds number
  • a dimpled sphere will have a 50% or more reduction in drag compared to a smooth sphere in the range of Reynolds number from 100,000 to 250,000.
  • a golf ball in flight during a driver shot can experience a Reynolds number ranging from 220,000 at the beginning of the flight to 60,000 at the end of the flight. It is therefore very important that a golf ball design can achieve a very low drag coefficient in that range.
  • the critical value of the Reynolds number, as well as the attained minimum drag coefficient in the post-critical regime depend on the dimple geometry and arrangement.
  • the critical Reynolds is increased and the drag coefficient in the post-critical regime increases.
  • Drag is one of the two forces (the other being lift) that influence the aerodynamic performance of a golf ball.
  • the dimple design is a balance between achieving the lowest critical Reynolds number and the lowest drag coefficient in the post-critical regime.
  • dimples are the only configuration known to provide a golf ball having a reduced drag coefficient.
  • the golf ball has a plurality of flat faces with sharp edges and points that collectively form a polyhedron.
  • FIG. 1 shows a plot of the drag coefficient C D vs Reynolds number Re for smooth and dimpled spheres.
  • the solid black line represents a smooth sphere (Achenbach, 1972); the double-dashed lines represent a dimpled sphere (J. Choi, 2006); and the dash-dot lines represent a dimpled sphere (Harvey, 1976).
  • the shaded area represents the typical range of Reynolds experience by a golf ball in flight during a driver shot (50,000-200,000).
  • FIG. 2( a ) shows a golf ball in accordance with one embodiment of the invention.
  • FIG. 2( b ) shows an outline of a golf ball.
  • FIG. 2( c ) shows an outline of a golf ball with non-sharp rounded edges.
  • FIG. 2( d ) shows an icosahedron, a well-known Platonic solid used to derive the golf ball 100 .
  • FIG. 2( e ) shows an example of splitting a hexagonal face into 6 triangular faces.
  • FIG. 3 shows the Goldberg polyhedron with 192 faces.
  • FIG. 5 is a graph showing the C D versus Reynolds for a Goldberg polyhedron with 192 faces and a dimpled sphere.
  • FIG. 6 is a graph showing the C D versus Reynolds for a Goldberg polyhedron with 162 faces and a dimpled sphere.
  • FIG. 7 shows a geodesic polyhedron made from 320 triangles.
  • FIG. 8 shows a geodesic cube with 174 faces.
  • FIG. 9 shows a polyhedron with 162 faces and 162 dimples.
  • FIG. 10 is a graph showing the drag coefficient C D versus Reynolds number Re for a Goldberg polyhedron with 162 faces and a Goldberg polyhedron with 162 faces and 162 dimples.
  • FIG. 11 is a comparison of drag coefficient C D versus Reynolds number for one of the embodiments of the present invention shown in FIG. 9 against a commercial ball Callaway Superhot.
  • FIG. 12 is an alternative embodiment of a golf ball based on an icosahedron with 312 faces and 312 spherical dimples.
  • FIG. 13 is a comparison of drag coefficient C D versus Reynolds number Re for one of the embodiments of the present invention based on a polyhedron with 312 faces and 312 spherical dimples of FIG. 12 against a commercial golf ball Bridgestone Tour.
  • the present invention is directed to a golf ball design based on polyhedra that can have reduced drag coefficient compared to a dimpled sphere.
  • a family of golf ball designs are made up of convex polyhedra whose vertices lie on a sphere.
  • a polyhedron is a solid in three dimensions with flat polygonal faces, straight sharp edges and sharp corners or vertices.
  • FIG. 2( a ) shows a golf ball 100 in accordance with one embodiment of the present invention.
  • the golf ball 100 has a body 110 with an inner core and an outer shell with an outer surface 112 .
  • a plurality of faces 120 are formed in the outer surface, creating a pattern 116 . All the faces are formed in the outer surface and each of such faces is flat and lies in a plane. The faces are bound by straight or linear edges 124 .
  • the golf ball 100 is a polyhedron with 162 polygons.
  • the body 110 defines a circumscribed sphere 102 , which is the smallest sphere containing the polyhedron, and is shown with a dashed line about the outermost points 104 of the body 110 .
  • the sphere and the diameter provide a reference for the size of the golf ball.
  • the Rules of Golf jointly governed by the R&A and the USGA, state that the diameter of a “conforming” golf ball cannot be any smaller than 1.680 inches.
  • the diameter of the circumscribed sphere is at least 1.68 in.
  • the vertices 122 a , 122 b of the polyhedron are the only points 104 on the polyhedron that lie on the sphere. Any point along the edges 124 a , 124 b or on the faces 120 a , 120 b of the polygons lies below the surface of the circumscribed sphere.
  • the golf ball body 110 is a polyhedron that is made from first faces 120 a and second faces 120 b .
  • the first faces 120 a have a first shape, namely pentagons
  • the second faces 120 b have a second shape different than the first shape, namely hexagons. All of the faces are flat and each such face forms a single plane.
  • there are 12 pentagons 120 a and 150 hexagons 120 b (a hexagon-to-pentagon ratio of 12.5:1), each having corners or points 122 a , 122 b connected by boundaries such as straight lines or edges 124 a , 124 b .
  • pentagons 120 a and hexagons 120 b can be used.
  • the number of polygons and the angle between them determine when the drag coefficient will start to drop and how low it will become. In general, as the number of faces is increased the drag crisis occurs at higher Reynolds number and the drag coefficient decreases.
  • the first and second faces 120 a , 120 b form the pattern 116 .
  • FIG. 2( b ) shows a cross sectional cut through the body 110 of ball 100 of FIG. 2( a ) along the line 150 .
  • the edges 124 are sharp, in that the radius of curvature 140 of an edge is less than 0.001 D, where D is the diameter of the circumscribed sphere. Ideally all edges should be the sharpest possible.
  • a radius of curvature of 0 is the case with the sharpest possible edges, though golf ball edges might become a little rounded during manufacture or follow use.
  • FIG. 2( c ) shows a cross section cut of two faces with rounded edges, whose radius of curvature is more than 0.001 D.
  • the resulting edge is not sharp and the reduction in drag is not maximized, which can be detrimental to the aerodynamic performance of the golf ball as the shape would approach that of a smooth sphere.
  • Both a sharp edge and a non-sharp edge is shown in that embodiment for illustrative purposes.
  • the angle ⁇ formed between two adjacent flat/planar faces 120 is always smaller than 180 degrees.
  • the geometric shape of the embodiment illustrated in FIG. 2( a ) falls into the class of convex polyhedral where the angle between any pair of adjacent faces is always less than 180 degrees.
  • the angle between a pentagon face 120 a and an adjacent hexagonal face 120 b is 166.215 degrees.
  • the angle between two adjacent hexagon faces 120 b varies from 161.5 degrees to 162.0 degrees.
  • Each face 120 is immediately adjacent and touching a neighboring face 120 , such that each edge 124 forms a border between two neighboring faces 120 and each point 122 is at the intersection of three neighboring faces 120 . And, each point 122 is at an opposite end of each linear edge 124 and is at the intersection of three linear edges 124 . Accordingly, there is no gap or space between adjacent neighboring faces 120 , and the faces 120 are contiguous and form a single integral, continuous outer surface 112 of the ball 100 .
  • a golf ball usually has a rubber core and at least one more layer surrounding the core.
  • the pattern 116 is formed on the outermost layer.
  • the pattern is based on an icosahedron shown in FIG. 2( d ) .
  • the icosahedron 170 is a well-known convex polyhedron made up of 20 equilateral triangle faces 180 , 12 vertices 182 and 30 edges 184 .
  • An icosahedron is one of the five regular Platonic solids, the other four being the cube, the tetrahedron, the octahedron and the dodecahedron (see https://en.wikipedia.org/wiki/Platonic solid).
  • Table 1 lists the coordinates of all the vertices and how each face is formed, which defines the geometry of the golf ball.
  • Table 1 lists the coordinates x, y, and z of all of the vertices 122 of golf ball 100 . Faces are constructed by connecting the vertices with straight lines. The coordinates x, y, z are normalized by the diameter D of the circumscribed sphere 104 and are with respect to the center of the sphere.
  • the golf ball 100 contains 320 vertices 122 , 480 straight edges 120 and 162 polygonal faces 120 .
  • the particular polyhedron can be any suitable configuration, and in one embodiment is a class of solids called Goldberg polyhedra that comprises convex polyhedra that are made entirely from a combination of rectangles, pentagons and hexagons.
  • Goldberg polyhedra are derived from either an icosahedron (a convex polyhedron made from 12 pentagons), or an octahedron (a convex polyhedron made from 8 triangles) or a tetrahedron (a convex polyhedron made from 4 triangles).
  • the invention can utilize any convex polyhedron (that is, a polyhedron made up of polygons whose angle is less than 180 degrees), though in one embodiment on such polyhedron is a convex polyhedron with sharp edges, flat faces forming a single plane, and adjacent faces having an angle of less than 180 degrees between them.
  • convex polyhedron that is, a polyhedron made up of polygons whose angle is less than 180 degrees
  • the particular configuration (Goldberg polyhedral 162 faces and icosahedral symmetry) can only be achieved with a combination of hexagons and pentagons. However other geometries with around 162 faces may be possible to do using only pentagons or only hexagons.
  • Other embodiments of the invention can include a pattern with various geometric configurations.
  • the pattern can be comprised of more or fewer of hexagons and pentagons than shown. Or it can comprise all hexagons, all pentagons, or no hexagons or pentagons but instead one or more other shapes or polyhedrals having flat faces and sharp edges.
  • One other shape can be formed, for example, by splitting each hexagon into 6 triangles or each pentagon into 5 triangles, which provides a similar drag coefficient.
  • One embodiment can include any of the Goldberg polyhedra with a combination of pentagons and hexagons or even a convex polyhedral made of triangles or squares.
  • flat faces give lower drag and have the uniqueness of not being dimples (curved indentations).
  • the flat faces only provide points of the faces that lie on the circumscribed sphere.
  • the sharp edges are defined by the angle between two adjacent faces.
  • the edges forming the boundaries between the two adjacent faces are flat and not excessively rounded.
  • An example of a non-sharp edge is shown in FIG. 2( c ) .
  • the angle between the two edges is the same as is in FIG. 2( b ) but it is rounded such that the edge is not sharp.
  • a convex polyhedra is one having faces with angles substantially with the values and in the ranges noted herein.
  • the ratio of pentagons to hexagons is 12:150, though any suitable ratio can be provided.
  • one of the hexagons can be split into 6 triangles and a have a polyhedron with 12 pentagons, 149 hexagons and 6 triangles and obtain substantially the same drag coefficient.
  • FIG. 2( e ) illustrates how such a splitting can be performed on one of the hexagonal faces 120 .
  • a vertex 140 can be chose anywhere inside the hexagon 120 .
  • the vertex 140 is near the center of the hexagon although any other location can be used.
  • Six new edges 142 can be formed by connecting the each of the vertices 122 with the new vertex 140 .
  • a triangular face 144 is formed by one edge 124 of the hexagon and two adjacent edges 142 .
  • the exact shape of the faces making up the polyhedral can vary but one important feature of the polyhedral pattern is the angle between faces.
  • FIG. 3 shows an example of a golf ball in accordance with another embodiment of the invention.
  • the golf ball 200 has a body 210 with an inner core and an outer shell with an outer surface 212 .
  • a plurality of faces 220 are formed in the outer surface, creating a pattern 216 . All the faces are formed in the outer surface and each of such faces is flat and lies in a plane. The faces are bound by straight or linear edges 224 .
  • the golf ball 200 is a polyhedron with 192 polygons.
  • the body 210 defines a circumscribed sphere 202 , which is the smallest sphere containing the polyhedron, and is shown with a dashed line about the outermost points 204 of the body 210 .
  • the vertices 222 a , 222 b of the polyhedron are the only points 204 on the polyhedron that lie on the sphere. Any point along the edges 224 a , 224 b or on the face of the polygons lies below the surface of the circumscribed sphere.
  • the golf ball body 210 is a polyhedron that is made from first faces 220 a and second faces 220 b .
  • the first faces 220 a have a first shape, namely pentagons
  • the second faces 220 b have a second shape different than the first shape, namely hexagons. All of the faces are flat and each such face forms a single plane.
  • pentagons 220 a and hexagons 220 b can be used.
  • the first and second faces 220 a , 220 b form the pattern 216 .
  • the edges 224 are sharp, in that the radius of curvature of an edge is less than 0.001 D, where D is the diameter of the circumscribed sphere. Ideally all edges should be the sharpest possible. A radius of curvature of 0 is the case with the sharpest possible edges, though golf ball edges might become a little rounded during manufacture or follow use.
  • the geometric shape of the embodiment illustrated in FIG. 3 falls into the class of convex polyhedral where the angle between any pair of adjacent faces is always less than 180 degrees.
  • the angle between a pentagon face 220 a and an adjacent hexagonal face 220 b is 167.6 degrees.
  • the angle between two adjacent hexagon faces 120 b varies from 163.4 degrees to 164.2 degrees.
  • Each face 220 is immediately adjacent and touching a neighboring face 220 , such that each edge 224 forms a border between two neighboring faces 220 and each point 222 is at the intersection of three neighboring faces 220 . And, each point 222 is at an opposite end of each linear edge 224 and is at the intersection of three linear edges 224 . Accordingly, there is no gap or space between adjacent neighboring faces 220 , and the faces 220 are contiguous and form a single integral, continuous outer surface 212 of the ball 200 .
  • the pattern is based on an icosahedron shown in FIG. 2( c ) .
  • the icosahedron 170 five equilateral triangles 180 meet at each of its twelve vertices 182 .
  • the 12 pentagons 220 a of the golf ball 200 shown in FIG. 3 are centered on the vertices of an icosahedron. Therefore, any pair of 3 pentagons 220 a form an equilateral triangle 280 .
  • the pentagons 220 a are all equilateral, that is the 5 edges 224 a all have the same length equal to 0.136 D, where D is the diameter of the circumscribed sphere.
  • the hexagons 220 b are not equilateral and the lengths of the edges 224 b vary from 0.136 D to 0.168 D.
  • Table 2 lists the coordinates of all the vertices and how each face is formed, which defines the geometry of the golf ball.
  • Table 1 lists the coordinates x, y, and z of all of the vertices 220 of polyhedron of golf ball 200 . Faces are constructed by connecting the vertices with straight lines. The coordinates x, y, z are normalized by the diameter D of the circumscribed sphere 204 and are with respect to the center of the sphere.
  • the golf ball 200 contains 380 vertices 222 , 570 straight edges 220 and 192 polygonal faces 220 .
  • FIG. 4 shows a graph of the drag coefficient, C D , versus the Reynolds number, Re, for the polyhedron with 162 and 192 faces.
  • the drag coefficient was obtained by wind tunnel experiments of non-spinning models.
  • For the polyhedron with 192 faces C D reaches a minimum value of 0.14 at Re 110,000 and remains almost constant as the Reynolds increases.
  • the graph reveals that as the number of faces increases the drag crisis shifts towards a higher Reynolds number and the C D in the post-critical regime decreases.
  • This feature can be taken into advantage when designing a golf ball to tailor the needs of a golfer.
  • a golf ball in flight during a driver shot can experience a Reynolds number ranging from 180,000 at the beginning of the flight to 60,000 at the end of the flight.
  • a golf ball in flight during a driver shot can experience a Reynolds number ranging from 220,000 at the beginning of the flight to 80,000 at the end of the flight.
  • the range of Reynolds number experienced by a golf ball for an amateur golfer is lower than that for a professional golfer.
  • a golf ball with more polygon faces might suit the needs of a professional golfer while a golf ball with less polygon faces might suit the needs of an amateur golfer.
  • FIG. 5 A comparison of the drag curve of the polyhedron with 192 faces, namely golf ball 200 , against a dimpled sphere is shown in FIG. 5 .
  • the dimpled sphere has 322 spherical dimples and is representative of a commercial golf ball.
  • the drag crisis for the polyhedron with 192 faces, namely golf ball 200 occurs at approximately the same range of Reynolds numbers as the dimpled sphere.
  • FIG. 6 A comparison of the drag curve of the golf ball 100 against the same dimpled sphere is shown in FIG. 6 . While C D in the post-critical regime is almost identical for the two balls, the drag crisis for the golf ball 200 occurs at a lower Reynolds number. As a result, C D for Re ⁇ 110,000 is consistently lower for the polyhedron with 192 faces than for the dimpled sphere. Thus, the embodiment of FIG. 2( a ) has a lower drag coefficient than a dimpled sphere. A lower drag coefficient is important because it plays an important role in achieving more carry distance during a driver shot.
  • FIGS. 7, 8 are additional non-limiting embodiments of the invention.
  • Those golf balls 300 , 400 have similar structure as the embodiments of FIGS. 2, 3 , and those structures have similar purpose.
  • Those structures have been assigned a similar reference numeral and similar structure with the differences noted below.
  • FIG. 7 shows an example of a golf ball 300 with a body 310 with an inner core and an outer shell with an outer surface 312 .
  • a plurality of faces 320 are formed in the outer surface, creating a pattern 316 . All the faces are formed in the outer surface 312 and each of such faces is flat and lies in a plane.
  • the faces are bound by straight or linear edges 324 and corners vertices 322 .
  • the body 310 defines a circumscribed sphere 302 , which is the smallest sphere containing the polyhedron, and is shown with a dashed line about the outermost points 304 of the body 310 .
  • FIG. 8 shows an example of a golf ball 400 with a body 410 with an inner core and an outer shell with an outer surface 412 .
  • a plurality of faces 420 are formed in the outer surface, creating a pattern 416 . All the faces are formed in the outer surface 412 and each of such faces is flat and lies in a plane. The faces are bound by straight or linear edges 424 and corners or vertices 422 .
  • the body 410 defines a circumscribed sphere 402 , which is the smallest sphere containing the polyhedron, and is shown with a dashed line about the outermost points 404 of the body 410 .
  • FIGS. 7, 8 are included for illustrative purposes as examples of convex polyhedral that are not made from pentagons or hexagons. Other convex polyhedra not made up of pentagons or hexagons can also be used for the design of a golf ball.
  • a convex polyhedron is shown in FIG. 7 .
  • the polyhedron belongs to a class of solids called Geodesic polyhedron which are derived from an icosahedron by subdividing each face into smaller faces using a triangular grid, and then applying a canonicalization algorithm to make the result more spherical. (see https://en.wikipedia.org/wiki/Geodesic_polyhedron).
  • the vertices of the polyhedron are the only points on the polyhedron that lie on a sphere. Any point along the edges or on the face of the triangles lies below the surface of a circumscribed sphere.
  • the polyhedron in FIG. 7 is made from 320 triangles but any geodesic polyhedron with an arbitrary number of triangles can be used as the design of a golf ball.
  • a convex polyhedron is shown in FIG. 8 .
  • the polyhedron belongs to a class of solids called Geodesic cubes which are made from rectangular faces.
  • a geodesic cube is a polyhedron derived from a cube by subdividing each face into smaller faces using a square grid, and then applying a canonicalization algorithm to make the result more spherical (see http://dmccooey.com/polyhedra/GeodesicCubes.html).
  • the vertices of the polyhedron are the only points on the polyhedron that lie on a sphere. Any point along the edges or on the face of the rectangular faces lies below the surface of a circumscribed sphere.
  • the polyhedron in FIG. 8 is made from 174 rectangular flat faces but any geodesic cube with an arbitrary number of faces can be used as the design of a golf ball.
  • the polyhedra described above and shown in FIGS. 2, 3, 7, 8 do not contain any dimples (i.e., curved or spherical depressions or indents), but instead have flat surfaces that lie in a plane.
  • the polyhedra provide enhanced aerodynamic characteristics, drag coefficient being one of them, that can help increase the carry distance of the golf ball.
  • FIG. 9 shows an embodiment of a golf ball 500 that is based on a convex polyhedron with a plurality of polygonal faces 520 .
  • the convex polyhedron is identical to the one shown in FIG. 2 , and includes a body 510 with an inner core and an outer shell with an outer surface 512 .
  • a plurality of faces 520 are formed in the outer surface, creating a pattern 516 . All the faces are formed in the outer surface 512 and each of such faces is flat and lies in a plane.
  • the faces are bound by straight or linear edges 524 and corners or vertices 522 .
  • the body 510 defines a circumscribed sphere 502 , which is the smallest sphere containing the polyhedron, and is shown with a dashed line about the outermost points 504 of the body 510 .
  • each face 520 of the polyhedron contains one dimple 560 .
  • the dimples 560 have a substantially spherical shape and are created by subtracting spheres 570 from each of the faces 510 of the polyhedron 500 .
  • Table 3 lists the coordinates x, y and z of the center of the spheres 570 along with the diameter d of the spheres 570 .
  • the coordinates x, y, z and the diameter of the spheres d are normalized by the diameter D of the circumscribed sphere 504 .
  • the coordinates x, y, and z are with respect to the center of the circumscribed sphere.
  • the total dimple volume ratio defined as the aggregate volume removed from the surface of the polyhedron divided by the volume of the polyhedron, is 0.317%.
  • the dimples 560 are each located at the center of each 510 .
  • the dimples 560 can be positioned at another location such as offset within each face 510 , or overlapping two or more faces 510 .
  • the dimples 560 can have any suitable size and shape.
  • non-spherical depressions can be utilized, such as triangles, hexagons, pentagons.
  • the dimples need not all have the same size and shape, for example there can be dimples with more than one size and more than one shape.
  • each dimple is formed by subtracting a sphere for the face of the polyhedron as explained above.
  • the dimple volume is the amount of volume that each sphere subtracts from the volume of the polyhedron.
  • FIG. 11 compares the drag curve of the golf ball 500 shown in FIG. 9 against a commercial golf ball, namely the Callaway SuperHot, which is a dimpled ball marketed as having a low drag coefficient and shown in U.S. Pat. No. 6,290,615.
  • the drag coefficient for both balls were obtained by performing wind tunnel experiments using the actual commercial golf ball and a 3D printed prototype of the golf ball 500 .
  • the drag crisis for the golf ball 500 happens earlier, that is the drag coefficient starts to drop at lower Reynolds number.
  • Clearly C D for golf ball 500 is consistently lower than that of the commercial golf ball for the range of Reynolds numbers 60,000-160,000.
  • a lower drag coefficient can help a golf ball achieve longer carry distances.
  • the golf ball 500 is the exact same polyhedron of golf ball 100 , however the golf ball 500 has a dimple on each face.
  • the polyhedron which golf ball 500 is based on is identical to the polyhedron of golf ball 100 in FIG. 2 .
  • FIG. 12 shows an example of a golf ball based on a convex polyhedron with dimples in accordance with another embodiment of the invention.
  • the golf ball 600 has a body 610 with an inner core and an outer shell with an outer surface 612 .
  • a plurality of faces 620 are formed in the outer surface, creating a pattern 616 . All the faces are formed in the outer surface and each of such faces is flat and lies in a plane. The faces are bound by straight or linear edges 624 .
  • the golf ball 600 is based on a polyhedron with 312 polygons.
  • the body 610 defines a circumscribed sphere 602 , which is the smallest sphere containing the polyhedron, and is shown with a dashed line about the outermost points 604 of the body 610 .
  • the vertices 622 a , 622 b of the polyhedron are the only points 604 on the polyhedron that lie on the sphere. Any point along the edges 624 or on the face of the polygons lies below the surface of the circumscribed sphere.
  • the golf ball body 610 is a polyhedron that is made from first faces 620 a and second faces 620 b .
  • the first faces 620 a have a first shape, namely pentagons
  • the second faces 620 b have a second shape different than the first shape, namely hexagons. All of the faces are flat and each such face forms a single plane.
  • the first and second faces 620 a , 620 b form the pattern 616 .
  • edges 624 are sharp, in that the radius of curvature of an edge is less than 0.001 D, where D is the diameter of the circumscribed sphere. Ideally all edges should be the sharpest possible. A radius of curvature of 0 is the case with the sharpest possible edges, though golf ball edges might become a little rounded during manufacture or follow use.
  • the geometric shape of the embodiment illustrated in FIG. 12 falls into the class of convex polyhedral where the angle between any pair of adjacent faces is always less than 180 degrees.
  • the angle between a pentagon face 620 a and an adjacent hexagonal face 620 b is 170.2 degrees.
  • the angle between two adjacent hexagon faces 620 b varies from 167.1 degrees to 168.2 degrees.
  • Each face 620 is immediately adjacent and touching a neighboring face 620 , such that each edge 624 forms a border between two neighboring faces 620 and each point 622 is at the intersection of three neighboring faces 620 . And, each point 622 is at an opposite end of each linear edge 624 and is at the intersection of three linear edges 624 . Accordingly, there is no gap or space between adjacent neighboring faces 620 , and the faces 620 are contiguous and form a single integral, continuous outer surface 612 of the ball 600 .
  • the pattern is based on an icosahedron shown in FIG. 2( c ) .
  • the icosahedron 170 five equilateral triangles 180 meet at each of its twelve vertices 182 .
  • the 12 pentagons 620 a of the golf ball 600 shown in FIG. 12 are centered on the vertices of an icosahedron. Therefore, any pair of 3 pentagons 620 a form an equilateral triangle 680 shown with dashed line in FIG. 12 .
  • the pentagons 620 a are all equilateral, that is the 5 edges 624 a all have the same length equal to 0.102 D, where D is the diameter of the circumscribed sphere.
  • the hexagons 620 b are not equilateral and the lengths of the edges 624 b vary from 0.102 D to 0.132 D.
  • Table 4 lists the coordinates of all the vertices and how each face is formed, which defines the geometry of the polyhedron.
  • Table 4 lists the coordinates x, y, and z of all of the vertices 622 of polyhedron of golf ball 600 . Faces are constructed by connecting the group of vertices with straight lines. The coordinates x, y, z are normalized by the diameter D of the circumscribed sphere 604 and are with respect to the center of the sphere.
  • the golf ball 600 contains 620 vertices 622 , 930 straight edges 624 and 312 polygonal faces 620 .
  • Each of the face 620 of the polyhedron contains one dimple 690 .
  • the dimples 690 have a substantially spherical shape and are created by subtracting spheres 670 from the face 620 of the polyhedron.
  • Table 5 lists the coordinates x, y and z of the center of the spheres 670 along with the diameter d of the spheres 670 .
  • the coordinates x, y, z and the diameter of the spheres d are normalized by the diameter D of the circumscribed sphere 604 .
  • the coordinates x, y, and z are with respect to the center of the circumscribed sphere.
  • FIG. 13 A comparison of the drag curve of this embodiment against that of a commercial golf ball, namely the Bridgestone Tour is shown in FIG. 13 , which is a dimpled ball marketed as having a low drag so that the ball travels further, and described in U.S. Pat. No. 7,503,857.
  • the graphs shows the invention having a lower drag coefficient.
  • the drag coefficient for both balls were obtained by performing wind tunnel experiments using the actual commercial golf ball and a 3D printed prototype of the embodiment.
  • At Reynolds number of 100,000 C D for the Bridgestone Tour ball is 0.195 while C D for the current embodiment is 0.162, a drag reduction of 17%.
  • Overall C D for the current embodiment is consistently lower than that of the commercial golf ball for the range of Reynolds numbers 80,000-160,000.
  • a lower drag coefficient can help a golf ball achieve longer carry distances.
  • FIGS. 2-3, 7-9, 12 Other sizes and shapes of dimples are contemplated by the present invention, and any suitable size and shape dimple can be utilized in the golf balls of FIGS. 2-3, 7-9, 12 . While FIG. 2 employs a convex polyhedron that belongs to a class of Goldberg polyhedral, FIGS. 9, 12 are revisions to the Goldberg principle in that each face of the polyhedron contains a dimple.
  • edges may not be exactly linear, hexagonal, pentagonal or spherical, but still be considered to be substantially linear, hexagonal, pentagonal or spherical, and faces may not be exactly flat or planar but still be considered to be substantially flat or planar because of, for example, roughness of surfaces, tolerances allowed in manufacturing, etc.
  • other suitable geometries and relationships can be provided without departing from the spirit and scope of the invention.
  • Vertex x/D y/D z/D Face Group of vertices 1 0.0000 0.0000 0.9778 1 301 300 69 296 295 20 2 0.6519 0.0000 0.7288 2 312 311 74 302 301 20 3 ⁇ 0.3260 0.5646 0.7288 3 295 294 79 313 312 20 4 ⁇ 0.3259 ⁇ 0.5646 0.7288 4 299 300 301 302 303 304 5 0.7288 0.5646 0.3259 5 293 294 295 296 297 298 6 0.7288 ⁇ 0.5645 0.3259 6 310 311 312 313 314 315 7 ⁇ 0.8533 0.3489 0.3259 7 300 299 70 292 291 69 8 0.1245 0.9135 0.3259 8 303 302 74 308 307 73 9 0.1245 ⁇ 0.9135 0.3259 9 297 296 69 291 290 68 10 ⁇ 0.8533 ⁇ 0.3489 0.3260 10 311 310 75

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Abstract

A golf ball having an outer surface with a pattern forming a polyhedron. The pattern can be flat faces forming sharp edges and sharp points therebetween. In one embodiment, the polyhedron is a Goldberg polyhedron.

Description

    RELATED APPLICATIONS
  • This application claims the benefit of U.S. Provisional Application No. 62/616,861, filed Jan. 12, 2018, the entire contents of which are incorporated herein by reference.
  • BACKGROUND Technical Field
  • The present invention relates to golf balls having a polyhedra design that can yield lower drag coefficient than a dimpled sphere. The drag reduction is applicable to other sports equipment in general having a bluff body, such as the head of a golf club or a bike helmet.
  • Background of the Related Art
  • For the past 100 years the vast majority of commercial golf balls have used designs with dimples. For the purpose of this invention, a dimple generally refers to any curved or spherical depression in the face or outer surface of the ball. The traditional golf ball, as readily accepted by the consuming public, is spherical with a plurality of dimples, where the dimples are generally depressions on the outer surface of a sphere. The vast majority of commercial golf balls use dimples that have a substantially spherical shape. Some examples of such golf balls can be found in U.S. Pat. Nos. 6,290,615, 6,923,736, and U.S. Publ. No. 20110268833.
  • It is well established that such depressions can lower the drag coefficient of a ball compared to that of a smooth sphere at the same speed. The drag coefficient is a dimensionless parameter that is used to quantify the drag force of resistance of an object in a fluid. The drag force is always opposite to the direction in which the object travels. The drag coefficient for a golf ball is defined as CD=2*Fd/(ρ*U2*A), where Fd is the drag force, p is the density of the fluid in which the object is moving, U is the speed of the object and A is the cross sectional area. For a sphere the cross-sectional area is πD2/4, where D is the diameter of the ball.
  • FIG. 1 shows the variation of the drag coefficient, CD, as a function of Reynolds number, Re, for smooth and dimpled spheres. The data were obtained by performing wind tunnel experiments of non-spinning spheres. The Reynolds number is a dimensionless parameter used in fluid mechanics and is defined as Re=U*D/v, where v is the kinematic viscosity in which the object moves. For a smooth sphere the drag coefficient (shown by the solid black line) remains constant (CD˜0.5) until the Reynolds number approaches a critical value (Recr˜300,000). At this point, which is usually referred to as drag crisis, CD decreases rapidly and hits a minimum, which is an order of magnitude lower CD˜0.08. With further increase in the Reynolds number the flow enters the post-critical regime characterized by turbulent boundary layers on the surface of the sphere. In this regime the drag coefficient rises slowly with increasing Reynolds number.
  • In dimpled spheres (shown by dashed and dotted black lines) the drag crisis happens at a much lower critical Reynolds number (Re<100,000). In general, a dimpled sphere will have a 50% or more reduction in drag compared to a smooth sphere in the range of Reynolds number from 100,000 to 250,000. A golf ball in flight during a driver shot can experience a Reynolds number ranging from 220,000 at the beginning of the flight to 60,000 at the end of the flight. It is therefore very important that a golf ball design can achieve a very low drag coefficient in that range. The critical value of the Reynolds number, as well as the attained minimum drag coefficient in the post-critical regime depend on the dimple geometry and arrangement. In general, as the aggregate dimple volume, measured as the sum of a dimple volume of each dimple of the plurality of dimples, decreases the critical Reynolds is increased and the drag coefficient in the post-critical regime increases. As the aggregate dimple volume approaches zero the drag curve approaches that of a smooth sphere. Drag is one of the two forces (the other being lift) that influence the aerodynamic performance of a golf ball. To increase the carry distance on a driver shot, the distance a golf ball travels during the flight, the dimple design is a balance between achieving the lowest critical Reynolds number and the lowest drag coefficient in the post-critical regime.
  • However, dimples are the only configuration known to provide a golf ball having a reduced drag coefficient.
  • SUMMARY
  • Accordingly, it is an object of the invention to provide a golf ball having minimal drag coefficient. It is a further object of the invention to provide a golf ball having reduced drag coefficient compared to a golf ball having only dimples. It is another object to provide a golf ball with minimal drag coefficient that is non-dimpled. In one embodiment, the golf ball has a plurality of flat faces with sharp edges and points that collectively form a polyhedron. These and other objects of the invention, as well as many of the intended advantages thereof, will become more readily apparent when reference is made to the following description, taken in conjunction with the accompanying drawings.
  • BRIEF DESCRIPTION OF THE FIGURES
  • FIG. 1 shows a plot of the drag coefficient CD vs Reynolds number Re for smooth and dimpled spheres. The solid black line represents a smooth sphere (Achenbach, 1972); the double-dashed lines represent a dimpled sphere (J. Choi, 2006); and the dash-dot lines represent a dimpled sphere (Harvey, 1976). The shaded area represents the typical range of Reynolds experience by a golf ball in flight during a driver shot (50,000-200,000).
  • FIG. 2(a) shows a golf ball in accordance with one embodiment of the invention.
  • FIG. 2(b) shows an outline of a golf ball.
  • FIG. 2(c) shows an outline of a golf ball with non-sharp rounded edges.
  • FIG. 2(d) shows an icosahedron, a well-known Platonic solid used to derive the golf ball 100.
  • FIG. 2(e) shows an example of splitting a hexagonal face into 6 triangular faces.
  • FIG. 3 shows the Goldberg polyhedron with 192 faces.
  • FIG. 4 is a graph of the drag coefficient versus Reynolds for the Goldberg polyhedra with 162 faces and 192 faces.
  • FIG. 5 is a graph showing the CD versus Reynolds for a Goldberg polyhedron with 192 faces and a dimpled sphere.
  • FIG. 6 is a graph showing the CD versus Reynolds for a Goldberg polyhedron with 162 faces and a dimpled sphere.
  • FIG. 7 shows a geodesic polyhedron made from 320 triangles.
  • FIG. 8 shows a geodesic cube with 174 faces.
  • FIG. 9 shows a polyhedron with 162 faces and 162 dimples.
  • FIG. 10 is a graph showing the drag coefficient CD versus Reynolds number Re for a Goldberg polyhedron with 162 faces and a Goldberg polyhedron with 162 faces and 162 dimples.
  • FIG. 11 is a comparison of drag coefficient CD versus Reynolds number for one of the embodiments of the present invention shown in FIG. 9 against a commercial ball Callaway Superhot.
  • FIG. 12 is an alternative embodiment of a golf ball based on an icosahedron with 312 faces and 312 spherical dimples.
  • FIG. 13 is a comparison of drag coefficient CD versus Reynolds number Re for one of the embodiments of the present invention based on a polyhedron with 312 faces and 312 spherical dimples of FIG. 12 against a commercial golf ball Bridgestone Tour.
  • DETAILED DESCRIPTION
  • In describing certain illustrative, non-limiting embodiments of the invention illustrated in the drawings, specific terminology will be resorted to for the sake of clarity. However, the invention is not intended to be limited to the specific terms so selected, and it is to be understood that each specific term includes all technical equivalents that operate in similar manner to accomplish a similar purpose. Several embodiments of the invention are described for illustrative purposes, it being understood that the invention may be embodied in other forms not specifically shown in the drawings.
  • The present invention is directed to a golf ball design based on polyhedra that can have reduced drag coefficient compared to a dimpled sphere. In one embodiment, a family of golf ball designs are made up of convex polyhedra whose vertices lie on a sphere. A polyhedron is a solid in three dimensions with flat polygonal faces, straight sharp edges and sharp corners or vertices.
  • FIG. 2(a) shows a golf ball 100 in accordance with one embodiment of the present invention. The golf ball 100 has a body 110 with an inner core and an outer shell with an outer surface 112. A plurality of faces 120 are formed in the outer surface, creating a pattern 116. All the faces are formed in the outer surface and each of such faces is flat and lies in a plane. The faces are bound by straight or linear edges 124. Here, the golf ball 100 is a polyhedron with 162 polygons.
  • The body 110 defines a circumscribed sphere 102, which is the smallest sphere containing the polyhedron, and is shown with a dashed line about the outermost points 104 of the body 110. The sphere and the diameter provide a reference for the size of the golf ball. The Rules of Golf, jointly governed by the R&A and the USGA, state that the diameter of a “conforming” golf ball cannot be any smaller than 1.680 inches. For the purpose of a golf ball the diameter of the circumscribed sphere is at least 1.68 in. The vertices 122 a, 122 b of the polyhedron are the only points 104 on the polyhedron that lie on the sphere. Any point along the edges 124 a, 124 b or on the faces 120 a, 120 b of the polygons lies below the surface of the circumscribed sphere.
  • The golf ball body 110 is a polyhedron that is made from first faces 120 a and second faces 120 b. As shown, the first faces 120 a have a first shape, namely pentagons, and the second faces 120 b have a second shape different than the first shape, namely hexagons. All of the faces are flat and each such face forms a single plane. In one embodiment, there are 12 pentagons 120 a and 150 hexagons 120 b (a hexagon-to-pentagon ratio of 12.5:1), each having corners or points 122 a, 122 b connected by boundaries such as straight lines or edges 124 a, 124 b. In various other embodiments, other quantities and/or ratios of such pentagons 120 a and hexagons 120 b can be used. However, the number of polygons and the angle between them determine when the drag coefficient will start to drop and how low it will become. In general, as the number of faces is increased the drag crisis occurs at higher Reynolds number and the drag coefficient decreases. The first and second faces 120 a, 120 b form the pattern 116.
  • The edges 124 are sharp, in that the faces are at an angle with respect to one another. FIG. 2(b) shows a cross sectional cut through the body 110 of ball 100 of FIG. 2(a) along the line 150. In this embodiment the edges 124 are sharp, in that the radius of curvature 140 of an edge is less than 0.001 D, where D is the diameter of the circumscribed sphere. Ideally all edges should be the sharpest possible. A radius of curvature of 0 is the case with the sharpest possible edges, though golf ball edges might become a little rounded during manufacture or follow use. FIG. 2(c) shows a cross section cut of two faces with rounded edges, whose radius of curvature is more than 0.001 D. The resulting edge is not sharp and the reduction in drag is not maximized, which can be detrimental to the aerodynamic performance of the golf ball as the shape would approach that of a smooth sphere. Both a sharp edge and a non-sharp edge is shown in that embodiment for illustrative purposes. The angle θ formed between two adjacent flat/planar faces 120 is always smaller than 180 degrees. The geometric shape of the embodiment illustrated in FIG. 2(a) falls into the class of convex polyhedral where the angle between any pair of adjacent faces is always less than 180 degrees. In this embodiment, the angle between a pentagon face 120 a and an adjacent hexagonal face 120 b is 166.215 degrees. The angle between two adjacent hexagon faces 120 b varies from 161.5 degrees to 162.0 degrees.
  • Each face 120 is immediately adjacent and touching a neighboring face 120, such that each edge 124 forms a border between two neighboring faces 120 and each point 122 is at the intersection of three neighboring faces 120. And, each point 122 is at an opposite end of each linear edge 124 and is at the intersection of three linear edges 124. Accordingly, there is no gap or space between adjacent neighboring faces 120, and the faces 120 are contiguous and form a single integral, continuous outer surface 112 of the ball 100.
  • A golf ball usually has a rubber core and at least one more layer surrounding the core. The pattern 116 is formed on the outermost layer. The pattern is based on an icosahedron shown in FIG. 2(d). The icosahedron 170 is a well-known convex polyhedron made up of 20 equilateral triangle faces 180, 12 vertices 182 and 30 edges 184. An icosahedron is one of the five regular Platonic solids, the other four being the cube, the tetrahedron, the octahedron and the dodecahedron (see https://en.wikipedia.org/wiki/Platonic solid).
  • In the icosahedron 170 five equilateral triangles 180 meet at each of its twelve vertices 182. The 12 pentagons 120 a of the golf ball 100 shown in FIG. 2(a) are centered on the vertices of an icosahedron. Therefore, a pair of 3 pentagons 120 a forms an equilateral triangular pattern 180. Along each of the edges of the triangles 180 there are 3 hexagons 120 b. Finally, inside each triangular pattern 180 there are three hexagons 120 b. The pentagons 120 a are all equilateral, that is the 5 edges 124 a all have the same length equal to 0.151 D, where D is the diameter of the circumscribed sphere. The hexagons 120 b are not equilateral and the lengths of the edges 124 b vary from 0.151 D to 0.1834 D.
  • Table 1 lists the coordinates of all the vertices and how each face is formed, which defines the geometry of the golf ball. Table 1 lists the coordinates x, y, and z of all of the vertices 122 of golf ball 100. Faces are constructed by connecting the vertices with straight lines. The coordinates x, y, z are normalized by the diameter D of the circumscribed sphere 104 and are with respect to the center of the sphere. The golf ball 100 contains 320 vertices 122, 480 straight edges 120 and 162 polygonal faces 120.
  • The particular polyhedron can be any suitable configuration, and in one embodiment is a class of solids called Goldberg polyhedra that comprises convex polyhedra that are made entirely from a combination of rectangles, pentagons and hexagons. Goldberg polyhedra are derived from either an icosahedron (a convex polyhedron made from 12 pentagons), or an octahedron (a convex polyhedron made from 8 triangles) or a tetrahedron (a convex polyhedron made from 4 triangles). An infinite number of Goldberg polyhedra exist, as shown in https://en.wikipedia.org/wiki/List_of_geodesic_polyhedra_and_Goldberg_polyhedra.
  • However, it will be recognized that the invention can utilize any convex polyhedron (that is, a polyhedron made up of polygons whose angle is less than 180 degrees), though in one embodiment on such polyhedron is a convex polyhedron with sharp edges, flat faces forming a single plane, and adjacent faces having an angle of less than 180 degrees between them.
  • The particular configuration (Goldberg polyhedral 162 faces and icosahedral symmetry) can only be achieved with a combination of hexagons and pentagons. However other geometries with around 162 faces may be possible to do using only pentagons or only hexagons. Other embodiments of the invention can include a pattern with various geometric configurations. For example, the pattern can be comprised of more or fewer of hexagons and pentagons than shown. Or it can comprise all hexagons, all pentagons, or no hexagons or pentagons but instead one or more other shapes or polyhedrals having flat faces and sharp edges. One other shape can be formed, for example, by splitting each hexagon into 6 triangles or each pentagon into 5 triangles, which provides a similar drag coefficient. One embodiment can include any of the Goldberg polyhedra with a combination of pentagons and hexagons or even a convex polyhedral made of triangles or squares.
  • It is further noted that flat faces give lower drag and have the uniqueness of not being dimples (curved indentations). The flat faces only provide points of the faces that lie on the circumscribed sphere. The sharp edges are defined by the angle between two adjacent faces. In addition, the edges forming the boundaries between the two adjacent faces are flat and not excessively rounded. An example of a non-sharp edge is shown in FIG. 2(c). The angle between the two edges is the same as is in FIG. 2(b) but it is rounded such that the edge is not sharp.
  • As the number of polygons increases (i.e. from 162 faces to 312 faces) the angle between the faces increases too and approaches 180 degrees. For the embodiments that are based purely on polyhedral shape such as those shown in FIGS. 2(a), 2(b) with 162 and 192 faces the range of angles is between 160 and 165 degrees. For the other embodiments in which dimples are added inside each face it is possible to go to as many as 312 faces and the angle between the faces can increase to 172 degrees. In one embodiment, the maximum angle could be close to 175 degrees and a range of angles between 160 and 175 degrees may be suitable for the purpose of a golf ball. Thus, a convex polyhedra is one having faces with angles substantially with the values and in the ranges noted herein.
  • In FIG. 2(a), the ratio of pentagons to hexagons is 12:150, though any suitable ratio can be provided. For example, out of the 150 hexagons one of the hexagons can be split into 6 triangles and a have a polyhedron with 12 pentagons, 149 hexagons and 6 triangles and obtain substantially the same drag coefficient. FIG. 2(e) illustrates how such a splitting can be performed on one of the hexagonal faces 120. A vertex 140 can be chose anywhere inside the hexagon 120. For illustrative purposes, the vertex 140 is near the center of the hexagon although any other location can be used. Six new edges 142 can be formed by connecting the each of the vertices 122 with the new vertex 140. A triangular face 144 is formed by one edge 124 of the hexagon and two adjacent edges 142. The exact shape of the faces making up the polyhedral can vary but one important feature of the polyhedral pattern is the angle between faces.
  • FIG. 3 shows an example of a golf ball in accordance with another embodiment of the invention. The golf ball 200 has a body 210 with an inner core and an outer shell with an outer surface 212. A plurality of faces 220 are formed in the outer surface, creating a pattern 216. All the faces are formed in the outer surface and each of such faces is flat and lies in a plane. The faces are bound by straight or linear edges 224. Here, the golf ball 200 is a polyhedron with 192 polygons.
  • The body 210 defines a circumscribed sphere 202, which is the smallest sphere containing the polyhedron, and is shown with a dashed line about the outermost points 204 of the body 210. The vertices 222 a, 222 b of the polyhedron are the only points 204 on the polyhedron that lie on the sphere. Any point along the edges 224 a, 224 b or on the face of the polygons lies below the surface of the circumscribed sphere.
  • The golf ball body 210 is a polyhedron that is made from first faces 220 a and second faces 220 b. As shown, the first faces 220 a have a first shape, namely pentagons, and the second faces 220 b have a second shape different than the first shape, namely hexagons. All of the faces are flat and each such face forms a single plane. In one embodiment, there are 12 pentagons 220 a and 180 hexagons 220 b (a hexagon-to-pentagon ratio of 15:1), each having corners or points 222 a, 222 b connected by boundaries such as straight lines or edges 224 a, 224 b. In various other embodiments, other quantities and/or ratios of such pentagons 220 a and hexagons 220 b can be used. The first and second faces 220 a, 220 b form the pattern 216. The edges 224 are sharp, in that the radius of curvature of an edge is less than 0.001 D, where D is the diameter of the circumscribed sphere. Ideally all edges should be the sharpest possible. A radius of curvature of 0 is the case with the sharpest possible edges, though golf ball edges might become a little rounded during manufacture or follow use.
  • The geometric shape of the embodiment illustrated in FIG. 3 falls into the class of convex polyhedral where the angle between any pair of adjacent faces is always less than 180 degrees. In this embodiment, the angle between a pentagon face 220 a and an adjacent hexagonal face 220 b is 167.6 degrees. The angle between two adjacent hexagon faces 120 b varies from 163.4 degrees to 164.2 degrees. When comparing this embodiment with the golf ball 100 illustrated in FIG. 2 it is obvious that as the number of faces on a convex polyhedron increases the angle between faces increases too.
  • Each face 220 is immediately adjacent and touching a neighboring face 220, such that each edge 224 forms a border between two neighboring faces 220 and each point 222 is at the intersection of three neighboring faces 220. And, each point 222 is at an opposite end of each linear edge 224 and is at the intersection of three linear edges 224. Accordingly, there is no gap or space between adjacent neighboring faces 220, and the faces 220 are contiguous and form a single integral, continuous outer surface 212 of the ball 200.
  • The pattern is based on an icosahedron shown in FIG. 2(c). In the icosahedron 170 five equilateral triangles 180 meet at each of its twelve vertices 182. The 12 pentagons 220 a of the golf ball 200 shown in FIG. 3 are centered on the vertices of an icosahedron. Therefore, any pair of 3 pentagons 220 a form an equilateral triangle 280. The pentagons 220 a are all equilateral, that is the 5 edges 224 a all have the same length equal to 0.136 D, where D is the diameter of the circumscribed sphere. The hexagons 220 b are not equilateral and the lengths of the edges 224 b vary from 0.136 D to 0.168 D.
  • Table 2 lists the coordinates of all the vertices and how each face is formed, which defines the geometry of the golf ball. Table 1 lists the coordinates x, y, and z of all of the vertices 220 of polyhedron of golf ball 200. Faces are constructed by connecting the vertices with straight lines. The coordinates x, y, z are normalized by the diameter D of the circumscribed sphere 204 and are with respect to the center of the sphere. The golf ball 200 contains 380 vertices 222, 570 straight edges 220 and 192 polygonal faces 220.
  • From a visual perspective the above designs of FIGS. 2, 3 have the unique characteristics of not having any dimples. From a utility perspective the behavior of the drag coefficient is very interesting. FIG. 4 shows a graph of the drag coefficient, CD, versus the Reynolds number, Re, for the polyhedron with 162 and 192 faces. The drag coefficient was obtained by wind tunnel experiments of non-spinning models. Overall the drag curve is qualitatively very similar to that of a dimpled sphere. Namely there is a drag crisis that occurs around Re=60,000. For the polyhedron with 162 faces CD reaches a minimum value of 0.16 at Re=90,000 and remains almost constant as the Reynolds increases. For the polyhedron with 192 faces CD reaches a minimum value of 0.14 at Re=110,000 and remains almost constant as the Reynolds increases.
  • The graph reveals that as the number of faces increases the drag crisis shifts towards a higher Reynolds number and the CD in the post-critical regime decreases. This feature can be taken into advantage when designing a golf ball to tailor the needs of a golfer. For an amateur golfer a golf ball in flight during a driver shot can experience a Reynolds number ranging from 180,000 at the beginning of the flight to 60,000 at the end of the flight. For a professional golfer a golf ball in flight during a driver shot can experience a Reynolds number ranging from 220,000 at the beginning of the flight to 80,000 at the end of the flight.
  • In other words, the range of Reynolds number experienced by a golf ball for an amateur golfer is lower than that for a professional golfer. A golf ball with more polygon faces might suit the needs of a professional golfer while a golf ball with less polygon faces might suit the needs of an amateur golfer.
  • The advantage of a design based on a convex polyhedron such as golf ball 200 with respect to a dimpled golf ball is now discussed. A comparison of the drag curve of the polyhedron with 192 faces, namely golf ball 200, against a dimpled sphere is shown in FIG. 5. The dimpled sphere has 322 spherical dimples and is representative of a commercial golf ball. The drag crisis for the polyhedron with 192 faces, namely golf ball 200, occurs at approximately the same range of Reynolds numbers as the dimpled sphere. The minimum CD for both balls is reached at Re=110,000. For the dimpled sphere CD=0.16 while for the golf ball 200 CD=0.14, that is 12.5% drag reduction. At Re=140,000 CD=0.174 for the dimpled sphere while for the golf ball 200 CD=0.147, that is 15% drag reduction. Indeed, the drag coefficient for golf ball 200 illustrated in FIG. 3 is consistently lower than that of a dimpled golf ball in the range of Re=90,000-220,000. A lower drag coefficient is important because it plays an important role in achieving more carry distance during a driver shot.
  • A comparison of the drag curve of the golf ball 100 against the same dimpled sphere is shown in FIG. 6. While CD in the post-critical regime is almost identical for the two balls, the drag crisis for the golf ball 200 occurs at a lower Reynolds number. As a result, CD for Re<110,000 is consistently lower for the polyhedron with 192 faces than for the dimpled sphere. Thus, the embodiment of FIG. 2(a) has a lower drag coefficient than a dimpled sphere. A lower drag coefficient is important because it plays an important role in achieving more carry distance during a driver shot.
  • FIGS. 7, 8 are additional non-limiting embodiments of the invention. Those golf balls 300, 400 have similar structure as the embodiments of FIGS. 2, 3, and those structures have similar purpose. Those structures have been assigned a similar reference numeral and similar structure with the differences noted below. For example, FIG. 7 shows an example of a golf ball 300 with a body 310 with an inner core and an outer shell with an outer surface 312. A plurality of faces 320 are formed in the outer surface, creating a pattern 316. All the faces are formed in the outer surface 312 and each of such faces is flat and lies in a plane. The faces are bound by straight or linear edges 324 and corners vertices 322. The body 310 defines a circumscribed sphere 302, which is the smallest sphere containing the polyhedron, and is shown with a dashed line about the outermost points 304 of the body 310. And FIG. 8 shows an example of a golf ball 400 with a body 410 with an inner core and an outer shell with an outer surface 412. A plurality of faces 420 are formed in the outer surface, creating a pattern 416. All the faces are formed in the outer surface 412 and each of such faces is flat and lies in a plane. The faces are bound by straight or linear edges 424 and corners or vertices 422. The body 410 defines a circumscribed sphere 402, which is the smallest sphere containing the polyhedron, and is shown with a dashed line about the outermost points 404 of the body 410.
  • The embodiment shown in FIGS. 7, 8 are included for illustrative purposes as examples of convex polyhedral that are not made from pentagons or hexagons. Other convex polyhedra not made up of pentagons or hexagons can also be used for the design of a golf ball. In another embodiment of the present invention a convex polyhedron is shown in FIG. 7. The polyhedron belongs to a class of solids called Geodesic polyhedron which are derived from an icosahedron by subdividing each face into smaller faces using a triangular grid, and then applying a canonicalization algorithm to make the result more spherical. (see https://en.wikipedia.org/wiki/Geodesic_polyhedron). The vertices of the polyhedron are the only points on the polyhedron that lie on a sphere. Any point along the edges or on the face of the triangles lies below the surface of a circumscribed sphere. The polyhedron in FIG. 7 is made from 320 triangles but any geodesic polyhedron with an arbitrary number of triangles can be used as the design of a golf ball.
  • In another embodiment of the present invention a convex polyhedron is shown in FIG. 8. The polyhedron belongs to a class of solids called Geodesic cubes which are made from rectangular faces. A geodesic cube is a polyhedron derived from a cube by subdividing each face into smaller faces using a square grid, and then applying a canonicalization algorithm to make the result more spherical (see http://dmccooey.com/polyhedra/GeodesicCubes.html). The vertices of the polyhedron are the only points on the polyhedron that lie on a sphere. Any point along the edges or on the face of the rectangular faces lies below the surface of a circumscribed sphere. The polyhedron in FIG. 8 is made from 174 rectangular flat faces but any geodesic cube with an arbitrary number of faces can be used as the design of a golf ball.
  • It is important to note that the polyhedra described above and shown in FIGS. 2, 3, 7, 8 do not contain any dimples (i.e., curved or spherical depressions or indents), but instead have flat surfaces that lie in a plane. However, the polyhedra provide enhanced aerodynamic characteristics, drag coefficient being one of them, that can help increase the carry distance of the golf ball.
  • However, golf ball geometries that are based on any convex polyhedra and either include or omit dimples are contemplated. In particular, for any convex polyhedra at least one of the faces may include one or more dimples. For example, FIG. 9 shows an embodiment of a golf ball 500 that is based on a convex polyhedron with a plurality of polygonal faces 520. The convex polyhedron is identical to the one shown in FIG. 2, and includes a body 510 with an inner core and an outer shell with an outer surface 512. A plurality of faces 520 are formed in the outer surface, creating a pattern 516. All the faces are formed in the outer surface 512 and each of such faces is flat and lies in a plane. The faces are bound by straight or linear edges 524 and corners or vertices 522. The body 510 defines a circumscribed sphere 502, which is the smallest sphere containing the polyhedron, and is shown with a dashed line about the outermost points 504 of the body 510.
  • However, in this embodiment each face 520 of the polyhedron contains one dimple 560. The dimples 560 have a substantially spherical shape and are created by subtracting spheres 570 from each of the faces 510 of the polyhedron 500. Table 3 lists the coordinates x, y and z of the center of the spheres 570 along with the diameter d of the spheres 570. The coordinates x, y, z and the diameter of the spheres d are normalized by the diameter D of the circumscribed sphere 504. The coordinates x, y, and z are with respect to the center of the circumscribed sphere. The total dimple volume ratio, defined as the aggregate volume removed from the surface of the polyhedron divided by the volume of the polyhedron, is 0.317%.
  • As shown, the dimples 560 are each located at the center of each 510. However, the dimples 560 can be positioned at another location such as offset within each face 510, or overlapping two or more faces 510. In addition, while spherical dimples 560 are shown, the dimples 560 can have any suitable size and shape. For example, non-spherical depressions can be utilized, such as triangles, hexagons, pentagons. And the dimples need not all have the same size and shape, for example there can be dimples with more than one size and more than one shape.
  • The effect that the addition of dimples has on the drag coefficient is now discussed. A comparison of the drag curve of this embodiment against that of golf ball 100 is shown in FIG. 10. There are two important observations. First when dimples are added to the faces of a polyhedron, the drag crisis occurs at a lower Reynolds number range. That is, the drag coefficient starts to drop at a lower Reynolds number. Second, the drag coefficient in the post-critical regime increases. This effect may be desirable when designing a golf ball for players with lower swing speeds such as an amateur golf player where the range of Reynolds number that the golf ball experiences during a driver shot is reduced. As the total dimple volume approaches zero the drag curve of golf ball 500 would approach that of golf ball 100. Therefore, one can fine tune the exact behavior of the drag curve by adjusting the total dimple volume. Each dimple is formed by subtracting a sphere for the face of the polyhedron as explained above. The dimple volume is the amount of volume that each sphere subtracts from the volume of the polyhedron.
  • FIG. 11 compares the drag curve of the golf ball 500 shown in FIG. 9 against a commercial golf ball, namely the Callaway SuperHot, which is a dimpled ball marketed as having a low drag coefficient and shown in U.S. Pat. No. 6,290,615. The drag coefficient for both balls were obtained by performing wind tunnel experiments using the actual commercial golf ball and a 3D printed prototype of the golf ball 500. The drag crisis for the golf ball 500 happens earlier, that is the drag coefficient starts to drop at lower Reynolds number. Clearly CD for golf ball 500 is consistently lower than that of the commercial golf ball for the range of Reynolds numbers 60,000-160,000. A lower drag coefficient can help a golf ball achieve longer carry distances. The golf ball 500 is the exact same polyhedron of golf ball 100, however the golf ball 500 has a dimple on each face. The polyhedron which golf ball 500 is based on is identical to the polyhedron of golf ball 100 in FIG. 2.
  • FIG. 12 shows an example of a golf ball based on a convex polyhedron with dimples in accordance with another embodiment of the invention. The golf ball 600 has a body 610 with an inner core and an outer shell with an outer surface 612. A plurality of faces 620 are formed in the outer surface, creating a pattern 616. All the faces are formed in the outer surface and each of such faces is flat and lies in a plane. The faces are bound by straight or linear edges 624. Here, the golf ball 600 is based on a polyhedron with 312 polygons.
  • The body 610 defines a circumscribed sphere 602, which is the smallest sphere containing the polyhedron, and is shown with a dashed line about the outermost points 604 of the body 610. The vertices 622 a, 622 b of the polyhedron are the only points 604 on the polyhedron that lie on the sphere. Any point along the edges 624 or on the face of the polygons lies below the surface of the circumscribed sphere.
  • The golf ball body 610 is a polyhedron that is made from first faces 620 a and second faces 620 b. As shown, the first faces 620 a have a first shape, namely pentagons, and the second faces 620 b have a second shape different than the first shape, namely hexagons. All of the faces are flat and each such face forms a single plane. In one embodiment, there are 12 pentagons 620 a and 300 hexagons 620 b (a hexagon-to-pentagon ratio of 25:1), each having corners or points 622 a, 622 b connected by boundaries such as straight lines or edges 624 a, 624 b. The first and second faces 620 a, 620 b form the pattern 616. The edges 624 are sharp, in that the radius of curvature of an edge is less than 0.001 D, where D is the diameter of the circumscribed sphere. Ideally all edges should be the sharpest possible. A radius of curvature of 0 is the case with the sharpest possible edges, though golf ball edges might become a little rounded during manufacture or follow use.
  • The geometric shape of the embodiment illustrated in FIG. 12 falls into the class of convex polyhedral where the angle between any pair of adjacent faces is always less than 180 degrees. In this embodiment, the angle between a pentagon face 620 a and an adjacent hexagonal face 620 b is 170.2 degrees. The angle between two adjacent hexagon faces 620 b varies from 167.1 degrees to 168.2 degrees.
  • Each face 620 is immediately adjacent and touching a neighboring face 620, such that each edge 624 forms a border between two neighboring faces 620 and each point 622 is at the intersection of three neighboring faces 620. And, each point 622 is at an opposite end of each linear edge 624 and is at the intersection of three linear edges 624. Accordingly, there is no gap or space between adjacent neighboring faces 620, and the faces 620 are contiguous and form a single integral, continuous outer surface 612 of the ball 600.
  • The pattern is based on an icosahedron shown in FIG. 2(c). In the icosahedron 170 five equilateral triangles 180 meet at each of its twelve vertices 182. The 12 pentagons 620 a of the golf ball 600 shown in FIG. 12 are centered on the vertices of an icosahedron. Therefore, any pair of 3 pentagons 620 a form an equilateral triangle 680 shown with dashed line in FIG. 12. The pentagons 620 a are all equilateral, that is the 5 edges 624 a all have the same length equal to 0.102 D, where D is the diameter of the circumscribed sphere. The hexagons 620 b are not equilateral and the lengths of the edges 624 b vary from 0.102 D to 0.132 D.
  • Table 4 lists the coordinates of all the vertices and how each face is formed, which defines the geometry of the polyhedron. Table 4 lists the coordinates x, y, and z of all of the vertices 622 of polyhedron of golf ball 600. Faces are constructed by connecting the group of vertices with straight lines. The coordinates x, y, z are normalized by the diameter D of the circumscribed sphere 604 and are with respect to the center of the sphere. The golf ball 600 contains 620 vertices 622, 930 straight edges 624 and 312 polygonal faces 620.
  • Each of the face 620 of the polyhedron contains one dimple 690. The dimples 690 have a substantially spherical shape and are created by subtracting spheres 670 from the face 620 of the polyhedron. Table 5 lists the coordinates x, y and z of the center of the spheres 670 along with the diameter d of the spheres 670. The coordinates x, y, z and the diameter of the spheres d are normalized by the diameter D of the circumscribed sphere 604. The coordinates x, y, and z are with respect to the center of the circumscribed sphere.
  • A comparison of the drag curve of this embodiment against that of a commercial golf ball, namely the Bridgestone Tour is shown in FIG. 13, which is a dimpled ball marketed as having a low drag so that the ball travels further, and described in U.S. Pat. No. 7,503,857. The graphs shows the invention having a lower drag coefficient. The drag coefficient for both balls were obtained by performing wind tunnel experiments using the actual commercial golf ball and a 3D printed prototype of the embodiment. The drag crisis for both golf balls occurs at approximately the same range of Reynolds number, namely from Re=50,000-80,000. At Reynolds number of 100,000 CD for the Bridgestone Tour ball is 0.195 while CD for the current embodiment is 0.162, a drag reduction of 17%. Overall CD for the current embodiment is consistently lower than that of the commercial golf ball for the range of Reynolds numbers 80,000-160,000. A lower drag coefficient can help a golf ball achieve longer carry distances.
  • Other sizes and shapes of dimples are contemplated by the present invention, and any suitable size and shape dimple can be utilized in the golf balls of FIGS. 2-3, 7-9, 12. While FIG. 2 employs a convex polyhedron that belongs to a class of Goldberg polyhedral, FIGS. 9, 12 are revisions to the Goldberg principle in that each face of the polyhedron contains a dimple.
  • The following documents are incorporated herein by reference. Achenbach, E. (1972). Experiments on the flow past spheres at high Reynolds numbers. Journal of Fluid Mechanics. Harvey, P. W. (1976). Golf ball aerodynamics. Aeronautical Quarterly. J. Choi, W. J. (2006). Mechanism of drag reduction by dimples on a sphere. Physics of Fluids, 149-167. Ogg, S. S. (2001).
  • It is further noted that the description and claims use several positional, geometric or relational terms, such as neighboring, circular, spherical, round, and flat. Those terms are merely for convenience to facilitate the description based on the embodiments shown in the figures. Those terms are not intended to limit the invention. Thus, it should be recognized that the invention can be described in other ways without those geometric, relational, directional or positioning terms. In addition, the geometric or relational terms may not be exact. For instance, edges may not be exactly linear, hexagonal, pentagonal or spherical, but still be considered to be substantially linear, hexagonal, pentagonal or spherical, and faces may not be exactly flat or planar but still be considered to be substantially flat or planar because of, for example, roughness of surfaces, tolerances allowed in manufacturing, etc. And, other suitable geometries and relationships can be provided without departing from the spirit and scope of the invention.
  • In addition, while the invention has been shown and described with boundaries formed by straight edges 124, 224, 324, 424, 524, 624 and points 122, 222, 322, 422, 522, other suitable boundaries can be provided such as curves with or without rounded points. And the boundaries need not be sharped, but can be curved. And other suitable shapes can be utilized for the faces. And, while the invention has been described with a certain number of faces and/or dimples, other suitable numbers of faces and/or dimples, more or fewer, can also be provided within the spirit and scope of the invention. Within this specification, the various sizes, shapes and dimensions are approximate and exemplary to illustrate the scope of the invention and are not limiting. The faces need not all be the same shape and/or size, and there can be multiple sizes and shapes of faces.
  • The sizes and the terms “substantially” and “about” mean plus or minus 15-20%, and in one embodiment plus or minus 10%, and in other embodiments plus or minus 5%, and plus or minus 1-2%. In addition, while specific dimensions, sizes and shapes may be provided in certain embodiments of the invention, those are simply to illustrate the scope of the invention and are not limiting. Thus, other dimensions, sizes and/or shapes can be utilized without departing from the spirit and scope of the invention.
  • Use of the term optional or alternative with respect to any element of a claim means that the element is required, or alternatively, the element is not required, both alternatives being within the scope of the claim. Use of broader terms such as comprises, includes, and having may be understood to provide support for narrower terms such as consisting of, consisting essentially of, and comprised substantially of. Accordingly, the scope of protection is not limited by the description set out above but is defined by the claims that follow, that scope including all equivalents of the subject matter of the claims. Each and every claim is incorporated as further disclosure into the specification and the claims are embodiment(s) of the present disclosure.
  • TABLE 1
    Vertex x/D y/D z/D Face Group of vertices
    1 0.0000 0.0000 0.9778 1 301 300 69 296 295 20
    2 0.6519 0.0000 0.7288 2 312 311 74 302 301 20
    3 −0.3260 0.5646 0.7288 3 295 294 79 313 312 20
    4 −0.3259 −0.5646 0.7288 4 299 300 301 302 303 304
    5 0.7288 0.5646 0.3259 5 293 294 295 296 297 298
    6 0.7288 −0.5645 0.3259 6 310 311 312 313 314 315
    7 −0.8533 0.3489 0.3259 7 300 299 70 292 291 69
    8 0.1245 0.9135 0.3259 8 303 302 74 308 307 73
    9 0.1245 −0.9135 0.3259 9 297 296 69 291 290 68
    10 −0.8533 −0.3489 0.3260 10 311 310 75 309 308 74
    11 0.8533 0.3489 −0.3260 11 294 293 80 320 319 79
    12 0.8533 −0.3489 −0.3259 12 314 313 79 319 318 78
    13 −0.7288 0.5645 −0.3259 13 288 289 290 291 292
    14 −0.1245 0.9135 −0.3259 14 305 306 307 308 309
    15 −0.1245 −0.9135 −0.3259 15 316 317 318 319 320
    16 −0.7288 −0.5646 −0.3259 16 244 243 70 299 304 17
    17 0.3259 0.5646 −0.7288 17 304 303 73 251 250 17
    18 0.3260 −0.5646 −0.7288 18 298 297 68 268 267 18
    19 −0.6519 0.0000 −0.7288 19 261 260 80 293 298 18
    20 0.0000 0.0000 −0.9778 20 278 277 75 310 315 19
    21 0.1755 0.3040 0.9230 21 315 314 78 285 284 19
    22 0.4845 0.3040 0.8050 22 288 292 70 243 242 66
    23 0.5210 0.5716 0.6140 23 252 251 73 307 306 72
    24 0.2345 0.7370 0.6140 24 269 268 68 290 289 67
    25 0.0210 0.5716 0.8050 25 305 309 75 277 276 71
    26 −0.3510 0.0000 0.9230 26 316 320 80 260 259 76
    27 −0.5055 0.2676 0.8050 27 286 285 78 318 317 77
    28 −0.7555 0.1654 0.6140 28 183 182 67 289 288 66
    29 −0.7555 −0.1654 0.6140 29 206 205 72 306 305 71
    30 −0.5055 −0.2676 0.8050 30 229 228 77 317 316 76
    31 0.1755 −0.3040 0.9230 31 250 249 53 245 244 17
    32 0.0210 −0.5716 0.8050 32 267 266 59 262 261 18
    33 0.2345 −0.7370 0.6140 33 284 283 63 279 278 19
    34 0.5210 −0.5716 0.6140 34 242 243 244 245 246 247
    35 0.4845 −0.3040 0.8050 35 248 249 250 251 252 253
    36 0.8770 0.0000 0.4540 36 265 266 267 268 269 270
    37 0.9135 −0.2676 0.2630 37 276 277 278 279 280 281
    38 0.9725 −0.1654 −0.0460 38 259 260 261 262 263 264
    39 0.9725 0.1654 −0.0460 39 282 283 284 285 286 287
    40 0.9135 0.2676 0.2630 40 184 183 66 242 247 11
    41 −0.4385 0.7595 0.4540 41 253 252 72 205 204 14
    42 −0.2250 0.9249 0.2630 42 270 269 67 182 181 12
    43 −0.3430 0.9249 −0.0460 43 207 206 71 276 281 13
    44 −0.6295 0.7595 −0.0460 44 230 229 76 259 264 15
    45 −0.6885 0.6573 0.2630 45 287 286 77 228 227 16
    46 −0.4385 −0.7595 0.4540 46 246 245 53 239 238 52
    47 −0.6885 −0.6573 0.2630 47 249 248 54 240 239 53
    48 −0.6295 −0.7595 −0.0460 48 266 265 60 258 257 59
    49 −0.3430 −0.9249 −0.0460 49 263 262 59 257 256 58
    50 −0.2250 −0.9249 0.2630 50 280 279 63 273 272 62
    51 0.6295 0.7595 0.0460 51 283 282 64 274 273 63
    52 0.6885 0.6573 −0.2630 52 179 180 181 182 183 184
    53 0.4385 0.7595 −0.4540 53 202 203 204 205 206 207
    54 0.2250 0.9249 −0.2630 54 225 226 227 228 229 230
    55 0.3430 0.9249 0.0460 55 247 246 52 188 187 11
    56 0.6295 −0.7595 0.0460 56 198 197 54 248 253 14
    57 0.3430 −0.9249 0.0460 57 175 174 60 265 270 12
    58 0.2250 −0.9249 −0.2630 58 281 280 62 211 210 13
    59 0.4385 −0.7595 −0.4540 59 264 263 58 234 233 15
    60 0.6885 −0.6573 −0.2630 60 221 220 64 282 287 16
    61 −0.9725 0.1654 0.0460 61 237 238 239 240 241
    62 −0.9135 0.2676 −0.2630 62 254 255 256 257 258
    63 −0.8770 0.0000 −0.4540 63 271 272 273 274 275
    64 −0.9135 −0.2676 −0.2630 64 187 186 39 179 184 11
    65 −0.9725 −0.1654 0.0460 65 181 180 38 176 175 12
    66 0.7555 0.1654 −0.6140 66 204 203 43 199 198 14
    67 0.7555 −0.1654 −0.6140 67 210 209 44 202 207 13
    68 0.5055 −0.2676 −0.8050 68 233 232 49 225 230 15
    69 0.3510 0.0000 −0.9230 69 227 226 48 222 221 16
    70 0.5055 0.2676 −0.8050 70 189 188 52 238 237 51
    71 −0.5210 0.5716 −0.6140 71 197 196 55 241 240 54
    72 −0.2345 0.7370 −0.6140 72 254 258 60 174 173 56
    73 −0.0210 0.5716 −0.8050 73 235 234 58 256 255 57
    74 −0.1755 0.3040 −0.9230 74 212 211 62 272 271 61
    75 −0.4845 0.3040 −0.8050 75 220 219 65 275 274 64
    76 −0.2345 −0.7370 −0.6140 76 180 179 39 171 170 38
    77 −0.5210 −0.5716 −0.6140 77 203 202 44 194 193 43
    78 −0.4845 −0.3040 −0.8050 78 226 225 49 217 216 48
    79 −0.1755 −0.3040 −0.9230 79 185 186 187 188 189 190
    80 −0.0210 −0.5716 −0.8050 80 196 197 198 199 200 201
    81 0.2485 0.4305 0.8677 81 173 174 175 176 177 178
    82 0.3932 0.4305 0.8124 82 208 209 210 211 212 213
    83 0.4103 0.5558 0.7230 83 231 232 233 234 235 236
    84 0.2762 0.6332 0.7230 84 219 220 221 222 223 224
    85 0.1762 0.5558 0.8124 85 237 241 55 105 104 51
    86 0.0023 0.3047 0.9342 86 160 159 57 255 254 56
    87 −0.0798 0.4470 0.8714 87 271 275 65 134 133 61
    88 −0.2538 0.4396 0.8361 88 186 185 40 172 171 39
    89 −0.3472 0.2926 0.8714 89 177 176 38 170 169 37
    90 −0.2650 0.1503 0.9342 90 200 199 43 193 192 42
    91 −0.0895 0.1550 0.9616 91 209 208 45 195 194 44
    92 0.2627 −0.1544 0.9342 92 232 231 50 218 217 49
    93 0.4270 −0.1544 0.8714 93 223 222 48 216 215 47
    94 0.5077 0.0000 0.8361 94 190 189 51 104 109 5
    95 0.4270 0.1544 0.8714 95 106 105 55 196 201 8
    96 0.2627 0.1544 0.9342 96 161 160 56 173 178 6
    97 0.1790 0.0000 0.9616 97 236 235 57 159 158 9
    98 0.8203 0.1503 0.5196 98 213 212 61 133 138 7
    99 0.8397 0.2926 0.4181 99 135 134 65 219 224 10
    100 0.7466 0.4396 0.4540 100 168 169 170 171 172
    101 0.6405 0.4470 0.5963 101 191 192 193 194 195
    102 0.6211 0.3047 0.6979 102 214 215 216 217 218
    103 0.7078 0.1550 0.6571 103 100 99 40 185 190 5
    104 0.5551 0.7856 0.2006 104 201 200 42 113 112 8
    105 0.4028 0.8735 0.2006 105 178 177 37 165 164 6
    106 0.2971 0.8664 0.3433 106 129 128 45 208 213 7
    107 0.3477 0.7781 0.4890 107 152 151 50 231 236 9
    108 0.5000 0.6902 0.4890 108 224 223 47 142 141 10
    109 0.6018 0.6905 0.3433 109 104 105 106 107 108 109
    110 −0.0467 0.6902 0.6979 110 156 157 158 159 160 161
    111 0.0669 0.7781 0.5963 111 133 134 135 136 137 138
    112 0.0075 0.8664 0.4540 112 168 172 40 99 98 36
    113 −0.1664 0.8735 0.4181 113 166 165 37 169 168 36
    114 −0.2800 0.7856 0.5196 114 114 113 42 192 191 41
    115 −0.2196 0.6905 0.6571 115 191 195 45 128 127 41
    116 −0.4971 0.0000 0.8677 116 214 218 50 151 150 46
    117 −0.5694 0.1253 0.8124 117 143 142 47 215 214 46
    118 −0.6865 0.0774 0.7230 118 109 108 23 101 100 5
    119 −0.6865 −0.0774 0.7230 119 112 111 24 107 106 8
    120 −0.5694 −0.1253 0.8124 120 164 163 34 156 161 6
    121 −0.2650 −0.1503 0.9342 121 138 137 28 130 129 7
    122 −0.3472 −0.2926 0.8714 122 158 157 33 153 152 9
    123 −0.2538 −0.4396 0.8361 123 141 140 29 136 135 10
    124 −0.0798 −0.4470 0.8714 124 98 99 100 101 102 103
    125 0.0023 −0.3047 0.9342 125 110 111 112 113 114 115
    126 −0.0895 −0.1550 0.9616 126 162 163 164 165 166 167
    127 −0.5403 0.6353 0.5196 127 127 128 129 130 131 132
    128 −0.6733 0.5809 0.4181 128 150 151 152 153 154 155
    129 −0.7540 0.4267 0.4540 129 139 140 141 142 143 144
    130 −0.7073 0.3312 0.5963 130 167 166 36 98 103 2
    131 −0.5744 0.3855 0.6979 131 115 114 41 127 132 3
    132 −0.4881 0.5354 0.6571 132 144 143 46 150 155 4
    133 −0.9579 0.0879 0.2007 133 108 107 24 84 83 23
    134 −0.9579 −0.0880 0.2007 134 157 156 34 148 147 33
    135 −0.8988 −0.1759 0.3433 135 137 136 29 119 118 28
    136 −0.8477 −0.0880 0.4890 136 102 101 23 83 82 22
    137 −0.8477 0.0880 0.4890 137 111 110 25 85 84 24
    138 −0.8988 0.1759 0.3433 138 163 162 35 149 148 34
    139 −0.5744 −0.3855 0.6979 139 131 130 28 118 117 27
    140 −0.7073 −0.3312 0.5963 140 154 153 33 147 146 32
    141 −0.7540 −0.4267 0.4540 141 140 139 30 120 119 29
    142 −0.6733 −0.5809 0.4181 142 103 102 22 95 94 2
    143 −0.5403 −0.6353 0.5196 143 94 93 35 162 167 2
    144 −0.4881 −0.5354 0.6571 144 88 87 25 110 115 3
    145 0.2485 −0.4305 0.8677 145 132 131 27 89 88 3
    146 0.1762 −0.5558 0.8124 146 155 154 32 124 123 4
    147 0.2762 −0.6332 0.7230 147 123 122 30 139 144 4
    148 0.4103 −0.5558 0.7230 148 81 82 83 84 85
    149 0.3932 −0.4305 0.8124 149 145 146 147 148 149
    150 −0.2800 −0.7856 0.5196 150 116 117 118 119 120
    151 −0.1664 −0.8735 0.4181 151 96 95 22 82 81 21
    152 0.0075 −0.8664 0.4540 152 81 85 25 87 86 21
    153 0.0669 −0.7781 0.5963 153 145 149 35 93 92 31
    154 −0.0467 −0.6902 0.6979 154 90 89 27 117 116 26
    155 −0.2196 −0.6905 0.6571 155 125 124 32 146 145 31
    156 0.5000 −0.6902 0.4890 156 116 120 30 122 121 26
    157 0.3477 −0.7781 0.4890 157 92 93 94 95 96 97
    158 0.2971 −0.8664 0.3433 158 86 87 88 89 90 91
    159 0.4028 −0.8735 0.2007 159 121 122 123 124 125 126
    160 0.5551 −0.7856 0.2007 160 97 96 21 86 91 1
    161 0.6018 −0.6905 0.3433 161 126 125 31 92 97 1
    162 0.6211 −0.3047 0.6979 162 91 90 26 121 126 1
    163 0.6405 −0.4470 0.5963
    164 0.7466 −0.4396 0.4540
    165 0.8397 −0.2926 0.4181
    166 0.8203 −0.1503 0.5196
    167 0.7078 −0.1550 0.6571
    168 0.9490 0.0000 0.3154
    169 0.9660 −0.1253 0.2259
    170 0.9937 −0.0774 0.0813
    171 0.9937 0.0774 0.0813
    172 0.9660 0.1253 0.2259
    173 0.7492 −0.6353 0.0271
    174 0.7806 −0.5809 −0.1372
    175 0.8647 −0.4267 −0.1643
    176 0.9247 −0.3312 −0.0271
    177 0.8934 −0.3855 0.1372
    178 0.8019 −0.5354 0.1643
    179 0.9579 0.0880 −0.2007
    180 0.9579 −0.0879 −0.2007
    181 0.8988 −0.1759 −0.3433
    182 0.8477 −0.0880 −0.4890
    183 0.8477 0.0880 −0.4890
    184 0.8988 0.1759 −0.3433
    185 0.8934 0.3855 0.1372
    186 0.9247 0.3312 −0.0271
    187 0.8647 0.4267 −0.1643
    188 0.7805 0.5809 −0.1372
    189 0.7492 0.6353 0.0271
    190 0.8019 0.5354 0.1643
    191 −0.4745 0.8218 0.3154
    192 −0.3745 0.8993 0.2259
    193 −0.4298 0.8993 0.0813
    194 −0.5639 0.8218 0.0813
    195 −0.5915 0.7740 0.2259
    196 0.1756 0.9664 0.0271
    197 0.1128 0.9664 −0.1372
    198 −0.0628 0.9622 −0.1643
    199 −0.1756 0.9664 −0.0271
    200 −0.1128 0.9664 0.1372
    201 0.0628 0.9622 0.1643
    202 −0.5551 0.7856 −0.2007
    203 −0.4028 0.8735 −0.2007
    204 −0.2971 0.8664 −0.3433
    205 −0.3477 0.7781 −0.4890
    206 −0.5000 0.6902 −0.4890
    207 −0.6018 0.6905 −0.3433
    208 −0.7806 0.5809 0.1372
    209 −0.7492 0.6353 −0.0271
    210 −0.8019 0.5354 −0.1643
    211 −0.8934 0.3855 −0.1372
    212 −0.9247 0.3312 0.0271
    213 −0.8647 0.4267 0.1643
    214 −0.4745 −0.8218 0.3154
    215 −0.5915 −0.7740 0.2259
    216 −0.5639 −0.8218 0.0813
    217 −0.4298 −0.8993 0.0813
    218 −0.3745 −0.8993 0.2259
    219 −0.9247 −0.3312 0.0271
    220 −0.8934 −0.3855 −0.1372
    221 −0.8019 −0.5354 −0.1643
    222 −0.7492 −0.6353 −0.0271
    223 −0.7805 −0.5809 0.1372
    224 −0.8647 −0.4267 0.1643
    225 −0.4028 −0.8735 −0.2006
    226 −0.5551 −0.7856 −0.2006
    227 −0.6018 −0.6905 −0.3433
    228 −0.5000 −0.6902 −0.4890
    229 −0.3477 −0.7781 −0.4890
    230 −0.2971 −0.8664 −0.3433
    231 −0.1128 −0.9664 0.1372
    232 −0.1756 −0.9664 −0.0271
    233 −0.0628 −0.9622 −0.1643
    234 0.1128 −0.9664 −0.1372
    235 0.1756 −0.9664 0.0271
    236 0.0628 −0.9622 0.1643
    237 0.5639 0.8218 −0.0813
    238 0.5915 0.7740 −0.2259
    239 0.4745 0.8218 −0.3154
    240 0.3745 0.8993 −0.2259
    241 0.4298 0.8993 −0.0813
    242 0.7073 0.3312 −0.5963
    243 0.5744 0.3855 −0.6979
    244 0.4881 0.5354 −0.6571
    245 0.5403 0.6353 −0.5196
    246 0.6733 0.5809 −0.4181
    247 0.7540 0.4267 −0.4540
    248 0.1664 0.8735 −0.4181
    249 0.2800 0.7856 −0.5196
    250 0.2196 0.6905 −0.6571
    251 0.0467 0.6902 −0.6979
    252 −0.0669 0.7781 −0.5963
    253 −0.0075 0.8664 −0.4540
    254 0.5639 −0.8218 −0.0813
    255 0.4298 −0.8993 −0.0813
    256 0.3745 −0.8993 −0.2259
    257 0.4745 −0.8218 −0.3154
    258 0.5915 −0.7740 −0.2259
    259 −0.0669 −0.7781 −0.5963
    260 0.0467 −0.6902 −0.6979
    261 0.2196 −0.6905 −0.6571
    262 0.2800 −0.7856 −0.5196
    263 0.1664 −0.8735 −0.4181
    264 −0.0075 −0.8664 −0.4540
    265 0.6733 −0.5809 −0.4181
    266 0.5403 −0.6353 −0.5196
    267 0.4881 −0.5354 −0.6571
    268 0.5744 −0.3855 −0.6979
    269 0.7073 −0.3312 −0.5963
    270 0.7540 −0.4267 −0.4540
    271 −0.9937 0.0774 −0.0813
    272 −0.9660 0.1253 −0.2259
    273 −0.9490 0.0000 −0.3154
    274 −0.9660 −0.1253 −0.2259
    275 −0.9937 −0.0774 −0.0813
    276 −0.6405 0.4470 −0.5963
    277 −0.6211 0.3047 −0.6979
    278 −0.7078 0.1550 −0.6571
    279 −0.8203 0.1503 −0.5196
    280 −0.8397 0.2926 −0.4181
    281 −0.7466 0.4396 −0.4540
    282 −0.8397 −0.2926 −0.4181
    283 −0.8203 −0.1503 −0.5196
    284 −0.7078 −0.1550 −0.6571
    285 −0.6211 −0.3047 −0.6979
    286 −0.6405 −0.4470 −0.5963
    287 −0.7466 −0.4396 −0.4540
    288 0.6865 0.0774 −0.7230
    289 0.6865 −0.0774 −0.7230
    290 0.5694 −0.1253 −0.8124
    291 0.4971 0.0000 −0.8677
    292 0.5694 0.1253 −0.8124
    293 0.0798 −0.4470 −0.8714
    294 −0.0023 −0.3047 −0.9342
    295 0.0895 −0.1550 −0.9616
    296 0.2650 −0.1503 −0.9342
    297 0.3472 −0.2926 −0.8714
    298 0.2538 −0.4396 −0.8361
    299 0.3472 0.2926 −0.8714
    300 0.2650 0.1503 −0.9342
    301 0.0895 0.1550 −0.9616
    302 −0.0023 0.3047 −0.9342
    303 0.0798 0.4470 −0.8714
    304 0.2538 0.4396 −0.8361
    305 −0.4103 0.5558 −0.7230
    306 −0.2762 0.6332 −0.7230
    307 −0.1762 0.5558 −0.8124
    308 −0.2485 0.4305 −0.8677
    309 −0.3932 0.4305 −0.8124
    310 −0.4270 0.1544 −0.8714
    311 −0.2627 0.1544 −0.9342
    312 −0.1790 0.0000 −0.9616
    313 −0.2627 −0.1544 −0.9342
    314 −0.4270 −0.1544 −0.8714
    315 −0.5077 0.0000 −0.8361
    316 −0.2762 −0.6332 −0.7230
    317 −0.4103 −0.5558 −0.7230
    318 −0.3932 −0.4305 −0.8124
    319 −0.2485 −0.4305 −0.8677
    320 −0.1762 −0.5558 −0.8124
  • TABLE 2
    Vertex x/D y/D z/D Face Group of vertices
    1 0.0166 0.0382 0.4983 1 96 168 240 216 144
    2 0.0166 −0.0382 −0.4983 2 97 169 241 217 145
    3 −0.0166 −0.0382 0.4983 3 98 170 242 218 146
    4 −0.0166 0.0382 −0.4983 4 99 171 243 219 147
    5 0.4983 0.0166 0.0382 5 100 172 244 221 149
    6 0.4983 −0.0166 −0.0382 6 101 173 245 220 148
    7 −0.4983 −0.0166 0.0382 7 102 174 246 223 151
    8 −0.4983 0.0166 −0.0382 8 103 175 247 222 150
    9 0.0382 0.4983 0.0166 9 104 176 248 226 154
    10 0.0382 −0.4983 −0.0166 10 105 177 249 227 155
    11 −0.0382 −0.4983 0.0166 11 106 178 250 224 152
    12 −0.0382 0.4983 −0.0166 12 107 179 251 225 153
    13 0.0979 0.0465 0.4881 13 72 26 0 12 60 84
    14 0.0979 −0.0465 −0.4881 14 72 84 192 264 230 134
    15 −0.0979 −0.0465 0.4881 15 72 134 158 110 50 26
    16 −0.0979 0.0465 −0.4881 16 73 25 3 15 63 87
    17 0.4881 0.0979 0.0465 17 73 87 195 267 229 133
    18 0.4881 −0.0979 −0.0465 18 73 133 157 109 49 25
    19 −0.4881 −0.0979 0.0465 19 74 24 2 14 62 86
    20 −0.4881 0.0979 −0.0465 20 74 86 194 266 228 132
    21 0.0465 0.4881 0.0979 21 74 132 156 108 48 24
    22 0.0465 −0.4881 −0.0979 22 75 27 1 13 61 85
    23 −0.0465 −0.4881 0.0979 23 75 85 193 265 231 135
    24 −0.0465 0.4881 −0.0979 24 75 135 159 111 51 27
    25 0.0333 −0.1043 0.4879 25 76 28 4 16 64 88
    26 0.0333 0.1043 −0.4879 26 76 88 196 268 232 136
    27 −0.0333 0.1043 0.4879 27 76 136 160 112 52 28
    28 −0.0333 −0.1043 −0.4879 28 77 29 5 17 65 89
    29 0.4879 −0.0333 0.1043 29 77 89 197 269 233 137
    30 0.4879 0.0333 −0.1043 30 77 137 161 113 53 29
    31 −0.4879 0.0333 0.1043 31 78 30 6 18 66 90
    32 −0.4879 −0.0333 −0.1043 32 78 90 198 270 234 138
    33 0.1043 −0.4879 0.0333 33 78 138 162 114 54 30
    34 0.1043 0.4879 −0.0333 34 79 31 7 19 67 91
    35 −0.1043 0.4879 0.0333 35 79 91 199 271 235 139
    36 −0.1043 −0.4879 −0.0333 36 79 139 163 115 55 31
    37 0.1443 −0.0179 0.4784 37 80 33 8 20 68 92
    38 0.1443 0.0179 −0.4784 38 80 92 200 272 237 141
    39 −0.1443 0.0179 0.4784 39 80 141 165 117 57 33
    40 −0.1443 −0.0179 −0.4784 40 81 32 9 21 69 93
    41 0.4784 −0.1443 0.0179 41 81 93 201 273 236 140
    42 0.4784 0.1443 −0.0179 42 81 140 164 116 56 32
    43 −0.4784 0.1443 0.0179 43 82 34 11 23 71 95
    44 −0.4784 −0.1443 −0.0179 44 82 95 203 275 238 142
    45 0.0179 −0.4784 0.1443 45 82 142 166 118 58 34
    46 0.0179 0.4784 −0.1443 46 83 35 10 22 70 94
    47 −0.0179 0.4784 0.1443 47 83 94 202 274 239 143
    48 −0.0179 −0.4784 −0.1443 48 83 143 167 119 59 35
    49 0.1142 −0.0920 0.4780 49 372 360 252 204 312 364
    50 0.1142 0.0920 −0.4780 50 372 364 256 208 316 368
    51 −0.1142 0.0920 0.4780 51 372 368 260 212 320 360
    52 −0.1142 −0.0920 −0.4780 52 373 325 277 349 297 333
    53 0.4780 −0.1142 0.0920 53 373 333 285 357 293 329
    54 0.4780 0.1142 −0.0920 54 373 329 281 353 289 325
    55 −0.4780 0.1142 0.0920 55 374 324 276 348 296 332
    56 −0.4780 −0.1142 −0.0920 56 374 332 284 356 292 328
    57 0.0920 −0.4780 0.1142 57 374 328 280 352 288 324
    58 0.0920 0.4780 −0.1142 58 375 361 253 205 313 365
    59 −0.0920 0.4780 0.1142 59 375 365 257 209 317 369
    60 −0.0920 −0.4780 −0.1142 60 375 369 261 213 321 361
    61 0.1304 0.1181 0.4680 61 376 326 278 350 298 334
    62 0.1304 −0.1181 −0.4680 62 376 334 286 358 294 330
    63 −0.1304 −0.1181 0.4680 63 376 330 282 354 290 326
    64 −0.1304 0.1181 −0.4680 64 377 363 255 207 315 367
    65 0.4680 0.1304 0.1181 65 377 367 259 211 319 371
    66 0.4680 −0.1304 −0.1181 66 377 371 263 215 323 363
    67 −0.4680 −0.1304 0.1181 67 378 362 254 206 314 366
    68 −0.4680 0.1304 −0.1181 68 378 366 258 210 318 370
    69 0.1181 0.4680 0.1304 69 378 370 262 214 322 362
    70 0.1181 −0.4680 −0.1304 70 379 327 279 351 299 335
    71 −0.1181 −0.4680 0.1304 71 379 335 287 359 295 331
    72 −0.1181 0.4680 −0.1304 72 379 331 283 355 291 327
    73 0.0000 0.1784 0.4671 73 48 108 180 168 96 36
    74 0.0000 0.1784 −0.4671 74 49 109 181 169 97 37
    75 0.0000 −0.1784 0.4671 75 50 110 182 170 98 38
    76 0.0000 −0.1784 −0.4671 76 51 111 183 171 99 39
    77 0.4671 0.0000 0.1784 77 52 112 184 172 100 40
    78 0.4671 0.0000 −0.1784 78 53 113 185 173 101 41
    79 −0.4671 0.0000 0.1784 79 54 114 186 174 102 42
    80 −0.4671 0.0000 −0.1784 80 55 115 187 175 103 43
    81 0.1784 0.4671 0.0000 81 56 116 188 176 104 44
    82 0.1784 −0.4671 0.0000 82 57 117 189 177 105 45
    83 −0.1784 0.4671 0.0000 83 58 118 190 178 106 46
    84 −0.1784 −0.4671 0.0000 84 59 119 191 179 107 47
    85 0.0830 0.1847 0.4571 85 60 12 36 96 144 120
    86 0.0830 −0.1847 −0.4571 86 61 13 37 97 145 121
    87 −0.0830 −0.1847 0.4571 87 62 14 38 98 146 122
    88 −0.0830 0.1847 −0.4571 88 63 15 39 99 147 123
    89 0.4571 0.0830 0.1847 89 64 16 41 101 148 124
    90 0.4571 −0.0830 −0.1847 90 65 17 40 100 149 125
    91 −0.4571 −0.0830 0.1847 91 66 18 43 103 150 126
    92 −0.4571 0.0830 −0.1847 92 67 19 42 102 151 127
    93 0.1847 0.4571 0.0830 93 68 20 46 106 152 128
    94 0.1847 −0.4571 −0.0830 94 69 21 47 107 153 129
    95 −0.1847 −0.4571 0.0830 95 70 22 44 104 154 130
    96 −0.1847 0.4571 −0.0830 96 71 23 45 105 155 131
    97 0.2123 −0.0080 0.4526 97 228 266 310 226 248 336
    98 0.2123 0.0080 −0.4526 98 229 267 311 227 249 337
    99 −0.2123 0.0080 0.4526 99 230 264 308 224 250 338
    100 −0.2123 −0.0080 −0.4526 100 231 265 309 225 251 339
    101 0.4526 −0.2123 0.0080 101 232 268 300 216 240 340
    102 0.4526 0.2123 −0.0080 102 233 269 301 217 241 341
    103 −0.4526 0.2123 0.0080 103 234 270 302 218 242 342
    104 −0.4526 −0.2123 −0.0080 104 235 271 303 219 243 343
    105 0.0080 −0.4526 0.2123 105 236 273 305 221 244 344
    106 0.0080 0.4526 −0.2123 106 237 272 304 220 245 345
    107 −0.0080 0.4526 0.2123 107 238 275 307 223 246 346
    108 −0.0080 −0.4526 −0.2123 108 239 274 306 222 247 347
    109 0.1621 −0.1505 0.4484 109 288 352 340 240 168 180
    110 0.1621 0.1505 −0.4484 110 289 353 341 241 169 181
    111 −0.1621 0.1505 0.4484 111 290 354 342 242 170 182
    112 −0.1621 −0.1505 −0.4484 112 291 355 343 243 171 183
    113 0.4484 −0.1621 0.1505 113 292 356 344 244 172 184
    114 0.4484 0.1621 −0.1505 114 293 357 345 245 173 185
    115 −0.4484 0.1621 0.1505 115 294 358 346 246 174 186
    116 −0.4484 −0.1621 −0.1505 116 295 359 347 247 175 187
    117 0.1505 −0.4484 0.1621 117 296 348 336 248 176 188
    118 0.1505 0.4484 −0.1621 118 297 349 337 249 177 189
    119 −0.1505 0.4484 0.1621 119 298 350 338 250 178 190
    120 −0.1505 −0.4484 −0.1621 120 299 351 339 251 179 191
    121 0.2055 0.1169 0.4406 121 312 204 120 144 216 300
    122 0.2055 −0.1169 −0.4406 122 313 205 121 145 217 301
    123 −0.2055 −0.1169 0.4406 123 314 206 122 146 218 302
    124 −0.2055 0.1169 −0.4406 124 315 207 123 147 219 303
    125 0.4406 0.2055 0.1169 125 316 208 124 148 220 304
    126 0.4406 −0.2055 −0.1169 126 317 209 125 149 221 305
    127 −0.4406 −0.2055 0.1169 127 318 210 126 150 222 306
    128 −0.4406 0.2055 −0.1169 128 319 211 127 151 223 307
    129 0.1169 0.4406 0.2055 129 320 212 128 152 224 308
    130 0.1169 −0.4406 −0.2055 130 321 213 129 153 225 309
    131 −0.1169 −0.4406 0.2055 131 322 214 130 154 226 310
    132 −0.1169 0.4406 −0.2055 132 323 215 131 155 227 311
    133 0.0497 −0.2387 0.4365 133 48 36 12 0 2 24
    134 0.0497 0.2387 −0.4365 134 49 37 13 1 3 25
    135 −0.0497 0.2387 0.4365 135 50 38 14 2 0 26
    136 −0.0497 −0.2387 −0.4365 136 51 39 15 3 1 27
    137 0.4365 −0.0497 0.2387 137 52 40 17 5 4 28
    138 0.4365 0.0497 −0.2387 138 53 41 16 4 5 29
    139 −0.4365 0.0497 0.2387 139 54 42 19 7 6 30
    140 −0.4365 −0.0497 −0.2387 140 55 43 18 6 7 31
    141 0.2387 −0.4365 0.0497 141 56 44 22 10 9 32
    142 0.2387 0.4365 −0.0497 142 57 45 23 11 8 33
    143 −0.2387 0.4365 0.0497 143 58 46 20 8 11 34
    144 −0.2387 −0.4365 −0.0497 144 59 47 21 9 10 35
    145 0.2396 0.0521 0.4358 145 60 120 204 252 192 84
    146 0.2396 −0.0521 −0.4358 146 61 121 205 253 193 85
    147 −0.2396 −0.0521 0.4358 147 62 122 206 254 194 86
    148 −0.2396 0.0521 −0.4358 148 63 123 207 255 195 87
    149 0.4358 0.2396 0.0521 149 64 124 208 256 196 88
    150 0.4358 −0.2396 −0.0521 150 65 125 209 257 197 89
    151 −0.4358 −0.2396 0.0521 151 66 126 210 258 198 90
    152 −0.4358 0.2396 −0.0521 152 67 127 211 259 199 91
    153 0.0521 0.4358 0.2396 153 68 128 212 260 200 92
    154 0.0521 −0.4358 −0.2396 154 69 129 213 261 201 93
    155 −0.0521 −0.4358 0.2396 155 70 130 214 262 202 94
    156 −0.0521 0.4358 −0.2396 156 71 131 215 263 203 95
    157 0.1314 −0.2239 0.4274 157 132 228 336 348 276 156
    158 0.1314 0.2239 −0.4274 158 133 229 337 349 277 157
    159 −0.1314 0.2239 0.4274 159 134 230 338 350 278 158
    160 −0.1314 −0.2239 −0.4274 160 135 231 339 351 279 159
    161 0.4274 −0.1314 0.2239 161 136 232 340 352 280 160
    162 0.4274 0.1314 −0.2239 162 137 233 341 353 281 161
    163 −0.4274 0.1314 0.2239 163 138 234 342 354 282 162
    164 −0.4274 −0.1314 −0.2239 164 139 235 343 355 283 163
    165 0.2239 −0.4274 0.1314 165 140 236 344 356 284 164
    166 0.2239 0.4274 −0.1314 166 141 237 345 357 285 165
    167 −0.2239 0.4274 0.1314 167 142 238 346 358 286 166
    168 −0.2239 −0.4274 −0.1314 168 143 239 347 359 287 167
    169 0.2525 −0.0570 0.4278 169 288 180 108 156 276 324
    170 0.2525 0.0570 −0.4278 170 289 181 109 157 277 325
    171 −0.2525 0.0570 0.4278 171 290 182 110 158 278 326
    172 −0.2525 −0.0570 −0.4278 172 291 183 111 159 279 327
    173 0.4278 −0.2525 0.0570 173 292 184 112 160 280 328
    174 0.4278 0.2525 −0.0570 174 293 185 113 161 281 329
    175 −0.4278 0.2525 0.0570 175 294 186 114 162 282 330
    176 −0.4278 −0.2525 −0.0570 176 295 187 115 163 283 331
    177 0.0570 −0.4278 0.2525 177 296 188 116 164 284 332
    178 0.0570 0.4278 −0.2525 178 297 189 117 165 285 333
    179 −0.0570 0.4278 0.2525 179 298 190 118 166 286 334
    180 −0.0570 −0.4278 −0.2525 180 299 191 119 167 287 335
    181 0.2345 −0.1280 0.4227 181 308 264 192 252 360 320
    182 0.2345 0.1280 −0.4227 182 309 265 193 253 361 321
    183 −0.2345 0.1280 0.4227 183 310 266 194 254 362 322
    184 −0.2345 −0.1280 −0.4227 184 311 267 195 255 363 323
    185 0.4227 −0.2345 0.1280 185 300 268 196 256 364 312
    186 0.4227 0.2345 −0.1280 186 301 269 197 257 365 313
    187 −0.4227 0.2345 0.1280 187 302 270 198 258 366 314
    188 −0.4227 −0.2345 −0.1280 188 303 271 199 259 367 315
    189 0.1280 −0.4227 0.2345 189 304 272 200 260 368 316
    190 0.1280 0.4227 −0.2345 190 305 273 201 261 369 317
    191 −0.1280 0.4227 0.2345 191 306 274 202 262 370 318
    192 −0.1280 −0.4227 −0.2345 192 307 275 203 263 371 319
    193 0.1147 0.2508 0.4171
    194 0.1147 −0.2508 −0.4171
    195 −0.1147 −0.2508 0.4171
    196 −0.1147 0.2508 −0.4171
    197 0.4171 0.1147 0.2508
    198 0.4171 −0.1147 −0.2508
    199 −0.4171 −0.1147 0.2508
    200 −0.4171 0.1147 −0.2508
    201 0.2508 0.4171 0.1147
    202 0.2508 −0.4171 −0.1147
    203 −0.2508 −0.4171 0.1147
    204 −0.2508 0.4171 −0.1147
    205 0.2374 0.1793 0.4019
    206 0.2374 −0.1793 −0.4019
    207 −0.2374 −0.1793 0.4019
    208 −0.2374 0.1793 −0.4019
    209 0.4019 0.2374 0.1793
    210 0.4019 −0.2374 −0.1793
    211 −0.4019 −0.2374 0.1793
    212 −0.4019 0.2374 −0.1793
    213 0.1793 0.4019 0.2374
    214 0.1793 −0.4019 −0.2374
    215 −0.1793 −0.4019 0.2374
    216 −0.1793 0.4019 −0.2374
    217 0.2966 0.0401 0.4005
    218 0.2966 −0.0401 −0.4005
    219 −0.2966 −0.0401 0.4005
    220 −0.2966 0.0401 −0.4005
    221 0.4005 0.2966 0.0401
    222 0.4005 −0.2966 −0.0401
    223 −0.4005 −0.2966 0.0401
    224 −0.4005 0.2966 −0.0401
    225 0.0401 0.4005 0.2966
    226 0.0401 −0.4005 −0.2966
    227 −0.0401 −0.4005 0.2966
    228 −0.0401 0.4005 −0.2966
    229 0.0162 −0.3030 0.3974
    230 0.0162 0.3030 −0.3974
    231 −0.0162 0.3030 0.3974
    232 −0.0162 −0.3030 −0.3974
    233 0.3974 −0.0162 0.3030
    234 0.3974 0.0162 −0.3030
    235 −0.3974 0.0162 0.3030
    236 −0.3974 −0.0162 −0.3030
    237 0.3030 −0.3974 0.0162
    238 0.3030 0.3974 −0.0162
    239 −0.3030 0.3974 0.0162
    240 −0.3030 −0.3974 −0.0162
    241 0.3045 −0.0273 0.3956
    242 0.3045 0.0273 −0.3956
    243 −0.3045 0.0273 0.3956
    244 −0.3045 −0.0273 −0.3956
    245 0.3956 −0.3045 0.0273
    246 0.3956 0.3045 −0.0273
    247 −0.3956 0.3045 0.0273
    248 −0.3956 −0.3045 −0.0273
    249 0.0273 −0.3956 0.3045
    250 0.0273 0.3956 −0.3045
    251 −0.0273 0.3956 0.3045
    252 −0.0273 −0.3956 −0.3045
    253 0.1932 0.2475 0.3891
    254 0.1932 −0.2475 −0.3891
    255 −0.1932 −0.2475 0.3891
    256 −0.1932 0.2475 −0.3891
    257 0.3891 0.1932 0.2475
    258 0.3891 −0.1932 −0.2475
    259 −0.3891 −0.1932 0.2475
    260 −0.3891 0.1932 −0.2475
    261 0.2475 0.3891 0.1932
    262 0.2475 −0.3891 −0.1932
    263 −0.2475 −0.3891 0.1932
    264 −0.2475 0.3891 −0.1932
    265 0.0643 0.3089 0.3879
    266 0.0643 −0.3089 −0.3879
    267 −0.0643 −0.3089 0.3879
    268 −0.0643 0.3089 −0.3879
    269 0.3879 0.0643 0.3089
    270 0.3879 −0.0643 −0.3089
    271 −0.3879 −0.0643 0.3089
    272 −0.3879 0.0643 −0.3089
    273 0.3089 0.3879 0.0643
    274 0.3089 −0.3879 −0.0643
    275 −0.3089 −0.3879 0.0643
    276 −0.3089 0.3879 −0.0643
    277 0.1766 −0.2744 0.3788
    278 0.1766 0.2744 −0.3788
    279 −0.1766 0.2744 0.3788
    280 −0.1766 −0.2744 −0.3788
    281 0.3788 −0.1766 0.2744
    282 0.3788 0.1766 −0.2744
    283 −0.3788 0.1766 0.2744
    284 −0.3788 −0.1766 −0.2744
    285 0.2744 −0.3788 0.1766
    286 0.2744 0.3788 −0.1766
    287 −0.2744 0.3788 0.1766
    288 −0.2744 −0.3788 −0.1766
    289 0.2793 −0.1750 0.3760
    290 0.2793 0.1750 −0.3760
    291 −0.2793 0.1750 0.3760
    292 −0.2793 −0.1750 −0.3760
    293 0.3760 −0.2793 0.1750
    294 0.3760 0.2793 −0.1750
    295 −0.3760 0.2793 0.1750
    296 −0.3760 −0.2793 −0.1750
    297 0.1750 −0.3760 0.2793
    298 0.1750 0.3760 −0.2793
    299 −0.1750 0.3760 0.2793
    300 −0.1750 −0.3760 −0.2793
    301 0.3335 0.0901 0.3615
    302 0.3335 −0.0901 −0.3615
    303 −0.3335 −0.0901 0.3615
    304 −0.3335 0.0901 −0.3615
    305 0.3615 0.3335 0.0901
    306 0.3615 −0.3335 −0.0901
    307 −0.3615 −0.3335 0.0901
    308 −0.3615 0.3335 −0.0901
    309 0.0901 0.3615 0.3335
    310 0.0901 −0.3615 −0.3335
    311 −0.0901 −0.3615 0.3335
    312 −0.0901 0.3615 −0.3335
    313 0.3054 0.1650 0.3599
    314 0.3054 −0.1650 −0.3599
    315 −0.3054 −0.1650 0.3599
    316 −0.3054 0.1650 −0.3599
    317 0.3599 0.3054 0.1650
    318 0.3599 −0.3054 −0.1650
    319 −0.3599 −0.3054 0.1650
    320 −0.3599 0.3054 −0.1650
    321 0.1650 0.3599 0.3054
    322 0.1650 −0.3599 −0.3054
    323 −0.1650 −0.3599 0.3054
    324 −0.1650 0.3599 −0.3054
    325 0.2518 −0.2492 0.3528
    326 0.2518 0.2492 −0.3528
    327 −0.2518 0.2492 0.3528
    328 −0.2518 −0.2492 −0.3528
    329 0.3528 −0.2518 0.2492
    330 0.3528 0.2518 −0.2492
    331 −0.3528 0.2518 0.2492
    332 −0.3528 −0.2518 −0.2492
    333 0.2492 −0.3528 0.2518
    334 0.2492 0.3528 −0.2518
    335 −0.2492 0.3528 0.2518
    336 −0.2492 −0.3528 −0.2518
    337 0.0612 −0.3504 0.3514
    338 0.0612 0.3504 −0.3514
    339 −0.0612 0.3504 0.3514
    340 −0.0612 −0.3504 −0.3514
    341 0.3514 −0.0612 0.3504
    342 0.3514 0.0612 −0.3504
    343 −0.3514 0.0612 0.3504
    344 −0.3514 −0.0612 −0.3504
    345 0.3504 −0.3514 0.0612
    346 0.3504 0.3514 −0.0612
    347 −0.3504 0.3514 0.0612
    348 −0.3504 −0.3514 −0.0612
    349 0.1395 −0.3376 0.3414
    350 0.1395 0.3376 −0.3414
    351 −0.1395 0.3376 0.3414
    352 −0.1395 −0.3376 −0.3414
    353 0.3414 −0.1395 0.3376
    354 0.3414 0.1395 −0.3376
    355 −0.3414 0.1395 0.3376
    356 −0.3414 −0.1395 −0.3376
    357 0.3376 −0.3414 0.1395
    358 0.3376 0.3414 −0.1395
    359 −0.3376 0.3414 0.1395
    360 −0.3376 −0.3414 −0.1395
    361 0.2185 0.3031 0.3322
    362 0.2185 −0.3031 −0.3322
    363 −0.2185 −0.3031 0.3322
    364 −0.2185 0.3031 −0.3322
    365 0.3322 0.2185 0.3031
    366 0.3322 −0.2185 −0.3031
    367 −0.3322 −0.2185 0.3031
    368 −0.3322 0.2185 −0.3031
    369 0.3031 0.3322 0.2185
    370 0.3031 −0.3322 −0.2185
    371 −0.3031 −0.3322 0.2185
    372 −0.3031 0.3322 −0.2185
    373 0.2887 0.2887 0.2887
    374 0.2887 0.2887 −0.2887
    375 0.2887 −0.2887 0.2887
    376 0.2887 −0.2887 −0.2887
    377 −0.2887 0.2887 0.2887
    378 −0.2887 0.2887 −0.2887
    379 −0.2887 −0.2887 0.2887
    380 −0.2887 −0.2887 −0.2887
  • TABLE 3
    Sphere x/D y/D z/D d/D
    1 0.1437 0.0000 −0.7810 0.6114
    2 −0.0718 0.1244 −0.7811 0.6115
    3 −0.0718 −0.1244 −0.7811 0.6115
    4 0.1418 0.2456 −0.7424 0.6127
    5 0.1418 −0.2456 −0.7424 0.6127
    6 −0.2836 0.0000 −0.7424 0.6127
    7 0.3189 0.1091 −0.6648 0.5125
    8 −0.0649 0.3307 −0.6648 0.5125
    9 0.3189 −0.1091 −0.6648 0.5125
    10 −0.2539 0.2216 −0.6648 0.5125
    11 −0.0649 −0.3307 −0.6648 0.5125
    12 −0.2539 −0.2216 −0.6648 0.5125
    13 0.3860 0.0000 −0.5053 0.2902
    14 −0.1930 0.3343 −0.5053 0.2902
    15 −0.1930 −0.3343 −0.5053 0.2902
    16 0.3413 0.3423 −0.6301 0.6115
    17 0.1258 0.4668 −0.6301 0.6115
    18 0.3413 −0.3423 −0.6301 0.6115
    19 0.1258 −0.4668 −0.6301 0.6115
    20 −0.4672 0.1244 −0.6301 0.6115
    21 −0.4672 −0.1244 −0.6301 0.6115
    22 0.4838 0.1766 −0.5388 0.5125
    23 −0.0890 0.5073 −0.5388 0.5125
    24 0.4838 −0.1766 −0.5388 0.5125
    25 −0.3948 0.3307 −0.5388 0.5125
    26 −0.0890 −0.5073 −0.5388 0.5125
    27 −0.3948 −0.3307 −0.5388 0.5125
    28 0.5858 0.0000 −0.4610 0.5125
    29 −0.2929 0.5073 −0.4610 0.5125
    30 −0.2929 −0.5073 −0.4610 0.5125
    31 0.3139 0.5437 −0.4864 0.6115
    32 0.3139 −0.5437 −0.4864 0.6115
    33 −0.6278 0.0000 −0.4864 0.6114
    34 0.5130 0.3974 −0.4589 0.6127
    35 0.0876 0.6430 −0.4589 0.6127
    36 0.5130 −0.3974 −0.4589 0.6127
    37 −0.6006 0.2456 −0.4589 0.6127
    38 0.0876 −0.6430 −0.4589 0.6127
    39 −0.6006 −0.2456 −0.4589 0.6127
    40 0.6611 0.2116 −0.3857 0.6114
    41 −0.1473 0.6784 −0.3858 0.6115
    42 0.6612 −0.2116 −0.3857 0.6115
    43 −0.5138 0.4668 −0.3857 0.6115
    44 −0.1473 −0.6784 −0.3857 0.6115
    45 −0.5138 −0.4668 −0.3857 0.6115
    46 0.4350 0.5351 −0.2829 0.5125
    47 0.2460 0.6442 −0.2829 0.5125
    48 0.4350 −0.5351 −0.2829 0.5125
    49 0.2460 −0.6442 −0.2829 0.5125
    50 −0.6809 0.1091 −0.2829 0.5125
    51 −0.6809 −0.1091 −0.2829 0.5125
    52 0.7424 0.0000 −0.2836 0.6127
    53 −0.3712 0.6430 −0.2836 0.6127
    54 −0.3712 −0.6430 −0.2836 0.6127
    55 0.6337 0.4129 −0.2421 0.6115
    56 0.0407 0.7553 −0.2421 0.6115
    57 0.6337 −0.4129 −0.2421 0.6115
    58 −0.6745 0.3423 −0.2421 0.6115
    59 0.0408 −0.7553 −0.2421 0.6115
    60 −0.6745 −0.3423 −0.2421 0.6115
    61 0.3123 0.5409 −0.1193 0.2902
    62 0.3123 −0.5409 −0.1193 0.2902
    63 −0.6246 0.0000 −0.1193 0.2902
    64 0.7500 0.2116 −0.1533 0.6115
    65 0.7500 −0.2116 −0.1533 0.6115
    66 −0.1917 0.7553 −0.1533 0.6115
    67 −0.5582 0.5437 −0.1533 0.6115
    68 −0.1917 −0.7553 −0.1533 0.6115
    69 −0.5582 −0.5437 −0.1533 0.6115
    70 0.5128 0.5351 −0.0791 0.5125
    71 0.2070 0.7117 −0.0791 0.5125
    72 0.5128 −0.5351 −0.0791 0.5125
    73 0.2070 −0.7117 −0.0791 0.5125
    74 −0.7198 0.1766 −0.0791 0.5125
    75 −0.7198 −0.1766 −0.0791 0.5125
    76 0.7439 0.0000 −0.0469 0.5125
    77 −0.3720 0.6442 −0.0469 0.5125
    78 −0.3720 −0.6442 −0.0469 0.5125
    79 0.6883 0.3974 0.0000 0.6127
    80 0.0000 0.7948 0.0000 0.6127
    81 0.6883 −0.3974 0.0000 0.6127
    82 −0.6883 0.3974 0.0000 0.6127
    83 0.0000 −0.7948 0.0000 0.6127
    84 −0.6883 −0.3974 0.0000 0.6127
    85 0.3720 0.6442 0.0469 0.5125
    86 0.3720 −0.6442 0.0469 0.5125
    87 −0.7439 0.0000 0.0469 0.5125
    88 0.7198 0.1766 0.0791 0.5125
    89 0.7198 −0.1766 0.0791 0.5125
    90 −0.2070 0.7117 0.0791 0.5125
    91 −0.5128 0.5351 0.0791 0.5125
    92 −0.2070 −0.7117 0.0791 0.5125
    93 −0.5128 −0.5351 0.0791 0.5125
    94 0.5582 0.5437 0.1533 0.6115
    95 0.1917 0.7553 0.1533 0.6115
    96 0.5582 −0.5437 0.1533 0.6115
    97 0.1917 −0.7553 0.1533 0.6115
    98 −0.7500 0.2116 0.1533 0.6115
    99 −0.7500 −0.2116 0.1533 0.6115
    100 0.6246 0.0000 0.1193 0.2902
    101 −0.3123 0.5409 0.1193 0.2902
    102 −0.3123 −0.5409 0.1193 0.2902
    103 0.6745 0.3423 0.2421 0.6115
    104 −0.0408 0.7553 0.2421 0.6115
    105 0.6745 −0.3423 0.2421 0.6115
    106 −0.6337 0.4129 0.2421 0.6115
    107 −0.0407 −0.7553 0.2421 0.6115
    108 −0.6337 −0.4129 0.2421 0.6115
    109 0.3712 0.6430 0.2836 0.6127
    110 0.3712 −0.6430 0.2836 0.6127
    111 −0.7424 0.0000 0.2836 0.6127
    112 0.6809 0.1091 0.2829 0.5125
    113 0.6809 −0.1091 0.2829 0.5125
    114 −0.2460 0.6442 0.2829 0.5125
    115 −0.4350 0.5351 0.2829 0.5125
    116 −0.2460 −0.6442 0.2829 0.5125
    117 −0.4350 −0.5351 0.2829 0.5125
    118 0.5138 0.4668 0.3857 0.6115
    119 0.1473 0.6784 0.3857 0.6115
    120 0.5138 −0.4668 0.3857 0.6115
    121 −0.6612 0.2116 0.3857 0.6115
    122 0.1473 −0.6784 0.3858 0.6115
    123 −0.6611 −0.2116 0.3857 0.6114
    124 0.6006 0.2456 0.4589 0.6127
    125 −0.0876 0.6430 0.4589 0.6127
    126 0.6006 −0.2456 0.4589 0.6127
    127 −0.5130 0.3974 0.4589 0.6127
    128 −0.0876 −0.6430 0.4589 0.6127
    129 −0.5130 −0.3974 0.4589 0.6127
    130 0.6278 0.0000 0.4864 0.6114
    131 −0.3139 0.5437 0.4864 0.6115
    132 −0.3139 −0.5437 0.4864 0.6115
    133 0.2929 0.5073 0.4610 0.5125
    134 0.2929 −0.5073 0.4610 0.5125
    135 −0.5858 0.0000 0.4610 0.5125
    136 0.3948 0.3307 0.5388 0.5125
    137 0.0890 0.5073 0.5388 0.5125
    138 0.3948 −0.3307 0.5388 0.5125
    139 −0.4838 0.1766 0.5388 0.5125
    140 0.0890 −0.5073 0.5388 0.5125
    141 −0.4838 −0.1766 0.5388 0.5125
    142 0.4672 0.1244 0.6301 0.6115
    143 0.4672 −0.1244 0.6301 0.6115
    144 −0.1258 0.4668 0.6301 0.6115
    145 −0.3413 0.3423 0.6301 0.6115
    146 −0.1258 −0.4668 0.6301 0.6115
    147 −0.3413 −0.3423 0.6301 0.6115
    148 0.1930 0.3343 0.5053 0.2902
    149 0.1930 −0.3343 0.5053 0.2902
    150 −0.3860 0.0000 0.5053 0.2902
    151 0.2539 0.2216 0.6648 0.5125
    152 0.0649 0.3307 0.6648 0.5125
    153 0.2539 −0.2216 0.6648 0.5125
    154 −0.3189 0.1091 0.6648 0.5125
    155 0.0649 −0.3307 0.6648 0.5125
    156 −0.3189 −0.1091 0.6648 0.5125
    157 0.2836 0.0000 0.7424 0.6127
    158 −0.1418 0.2456 0.7424 0.6127
    159 −0.1418 −0.2456 0.7424 0.6127
    160 0.0718 0.1244 0.7811 0.6115
    161 0.0718 −0.1244 0.7811 0.6115
    162 −0.1437 0.0000 0.7810 0.6114
  • TABLE 4
    Vertex x/D y/D z/D Face Group of vertices
    1 0.0304 0.0117 0.4989 1 204 276 384 312 216
    2 0.0304 −0.0117 −0.4989 2 205 277 385 313 217
    3 −0.0304 −0.0117 0.4989 3 206 278 386 314 218
    4 −0.0304 0.0117 −0.4989 4 207 279 387 315 219
    5 0.4989 0.0304 0.0117 5 208 280 388 317 221
    6 0.4989 −0.0304 −0.0117 6 209 281 389 316 220
    7 −0.4989 −0.0304 0.0117 7 210 282 390 319 223
    8 −0.4989 0.0304 −0.0117 8 211 283 391 318 222
    9 0.0117 0.4989 0.0304 9 212 284 392 322 226
    10 0.0117 −0.4989 −0.0304 10 213 285 393 323 227
    11 −0.0117 −0.4989 0.0304 11 214 286 394 320 224
    12 −0.0117 0.4989 −0.0304 12 215 287 395 321 225
    13 0.0804 −0.0287 0.4926 13 108 50 24 72 132 156
    14 0.0804 0.0287 −0.4926 14 108 156 264 360 302 194
    15 −0.0804 0.0287 0.4926 15 108 194 182 98 38 50
    16 −0.0804 −0.0287 −0.4926 16 109 49 27 75 135 159
    17 0.4926 −0.0804 0.0287 17 109 159 267 363 301 193
    18 0.4926 0.0804 −0.0287 18 109 193 181 97 37 49
    19 −0.4926 0.0804 0.0287 19 110 48 26 74 134 158
    20 −0.4926 −0.0804 −0.0287 20 110 158 266 362 300 192
    21 0.0287 −0.4926 0.0804 21 110 192 180 96 36 48
    22 0.0287 0.4926 −0.0804 22 111 51 25 73 133 157
    23 −0.0287 0.4926 0.0804 23 111 157 265 361 303 195
    24 −0.0287 −0.4926 −0.0804 24 111 195 183 99 39 51
    25 0.0406 0.0756 0.4926 25 112 52 28 76 136 160
    26 0.0406 −0.0756 −0.4926 26 112 160 268 364 304 196
    27 −0.0406 −0.0756 0.4926 27 112 196 184 100 40 52
    28 −0.0406 0.0756 −0.4926 28 113 53 29 77 137 161
    29 0.4926 0.0406 0.0756 29 113 161 269 365 305 197
    30 0.4926 −0.0406 −0.0756 30 113 197 185 101 41 53
    31 −0.4926 −0.0406 0.0756 31 114 54 30 78 138 162
    32 −0.4926 0.0406 −0.0756 32 114 162 270 366 306 198
    33 0.0756 0.4926 0.0406 33 114 198 186 102 42 54
    34 0.0756 −0.4926 −0.0406 34 115 55 31 79 139 163
    35 −0.0756 −0.4926 0.0406 35 115 163 271 367 307 199
    36 −0.0756 0.4926 −0.0406 36 115 199 187 103 43 55
    37 0.0708 −0.0922 0.4863 37 116 57 32 80 140 164
    38 0.0708 0.0922 −0.4863 38 116 164 272 368 309 201
    39 −0.0708 0.0922 0.4863 39 116 201 189 105 45 57
    40 −0.0708 −0.0922 −0.4863 40 117 56 33 81 141 165
    41 0.4863 −0.0708 0.0922 41 117 165 273 369 308 200
    42 0.4863 0.0708 −0.0922 42 117 200 188 104 44 56
    43 −0.4863 0.0708 0.0922 43 118 58 35 83 143 167
    44 −0.4863 −0.0708 −0.0922 44 118 167 275 371 310 202
    45 0.0922 −0.4863 0.0708 45 118 202 190 106 46 58
    46 0.0922 0.4863 −0.0708 46 119 59 34 82 142 166
    47 −0.0922 0.4863 0.0708 47 119 166 274 370 311 203
    48 −0.0922 −0.4863 −0.0708 48 119 203 191 107 47 59
    49 0.0102 −0.1163 0.4862 49 612 588 456 468 600 592
    50 0.0102 0.1163 −0.4862 50 612 592 460 472 604 596
    51 −0.0102 0.1163 0.4862 51 612 596 464 476 608 588
    52 −0.0102 −0.1163 −0.4862 52 613 577 565 549 489 585
    53 0.4862 −0.0102 0.1163 53 613 585 573 545 485 581
    54 0.4862 0.0102 −0.1163 54 613 581 569 541 481 577
    55 −0.4862 0.0102 0.1163 55 614 576 564 548 488 584
    56 −0.4862 −0.0102 −0.1163 56 614 584 572 544 484 580
    57 0.1163 −0.4862 0.0102 57 614 580 568 540 480 576
    58 0.1163 0.4862 −0.0102 58 615 589 457 469 601 593
    59 −0.1163 0.4862 0.0102 59 615 593 461 473 605 597
    60 −0.1163 −0.4862 −0.0102 60 615 597 465 477 609 589
    61 0.1376 −0.0055 0.4807 61 616 578 566 550 490 586
    62 0.1376 0.0055 −0.4807 62 616 586 574 546 486 582
    63 −0.1376 0.0055 0.4807 63 616 582 570 542 482 578
    64 −0.1376 −0.0055 −0.4807 64 617 591 459 471 603 595
    65 0.4807 −0.1376 0.0055 65 617 595 463 475 607 599
    66 0.4807 0.1376 −0.0055 66 617 599 467 479 611 591
    67 −0.4807 0.1376 0.0055 67 618 590 458 470 602 594
    68 −0.4807 −0.1376 −0.0055 68 618 594 462 474 606 598
    69 0.0055 −0.4807 0.1376 69 618 598 466 478 610 590
    70 0.0055 0.4807 −0.1376 70 619 579 567 551 491 587
    71 −0.0055 0.4807 0.1376 71 619 587 575 547 487 583
    72 −0.0055 −0.4807 −0.1376 72 619 583 571 543 483 579
    73 0.1006 0.0965 0.4802 73 12 0 2 26 48 36
    74 0.1006 −0.0965 −0.4802 74 13 1 3 27 49 37
    75 −0.1006 −0.0965 0.4802 75 14 2 0 24 50 38
    76 −0.1006 0.0965 −0.4802 76 15 3 1 25 51 39
    77 0.4802 0.1006 0.0965 77 16 5 4 28 52 40
    78 0.4802 −0.1006 −0.0965 78 17 4 5 29 53 41
    79 −0.4802 −0.1006 0.0965 79 18 7 6 30 54 42
    80 −0.4802 0.1006 −0.0965 80 19 6 7 31 55 43
    81 0.0965 0.4802 0.1006 81 20 10 9 33 56 44
    82 0.0965 −0.4802 −0.1006 82 21 11 8 32 57 45
    83 −0.0965 −0.4802 0.1006 83 22 8 11 35 58 46
    84 −0.0965 0.4802 −0.1006 84 23 9 10 34 59 47
    85 0.1473 0.0548 0.4747 85 132 228 348 396 264 156
    86 0.1473 −0.0548 −0.4747 86 133 229 349 397 265 157
    87 −0.1473 −0.0548 0.4747 87 134 230 350 398 266 158
    88 −0.1473 0.0548 −0.4747 88 135 231 351 399 267 159
    89 0.4747 0.1473 0.0548 89 136 232 352 400 268 160
    90 0.4747 −0.1473 −0.0548 90 137 233 353 401 269 161
    91 −0.4747 −0.1473 0.0548 91 138 234 354 402 270 162
    92 −0.4747 0.1473 −0.0548 92 139 235 355 403 271 163
    93 0.0548 0.4747 0.1473 93 140 236 356 404 272 164
    94 0.0548 −0.4747 −0.1473 94 141 237 357 405 273 165
    95 −0.0548 −0.4747 0.1473 95 142 238 358 406 274 166
    96 −0.0548 0.4747 −0.1473 96 143 239 359 407 275 167
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    476 −0.3713 0.2768 −0.1885
    477 0.1885 0.3713 0.2768
    478 0.1885 −0.3713 −0.2768
    479 −0.1885 −0.3713 0.2768
    480 −0.1885 0.3713 −0.2768
    481 0.2603 −0.2143 0.3692
    482 0.2603 0.2143 −0.3692
    483 −0.2603 0.2143 0.3692
    484 −0.2603 −0.2143 −0.3692
    485 0.3692 −0.2603 0.2143
    486 0.3692 0.2603 −0.2143
    487 −0.3692 0.2603 0.2143
    488 −0.3692 −0.2603 −0.2143
    489 0.2143 −0.3692 0.2603
    490 0.2143 0.3692 −0.2603
    491 −0.2143 0.3692 0.2603
    492 −0.2143 −0.3692 −0.2603
    493 0.3394 −0.0182 0.3667
    494 0.3394 0.0182 −0.3667
    495 −0.3394 0.0182 0.3667
    496 −0.3394 −0.0182 −0.3667
    497 0.3667 −0.3394 0.0182
    498 0.3667 0.3394 −0.0182
    499 −0.3667 0.3394 0.0182
    500 −0.3667 −0.3394 −0.0182
    501 0.0182 −0.3667 0.3394
    502 0.0182 0.3667 −0.3394
    503 −0.0182 0.3667 0.3394
    504 −0.0182 −0.3667 −0.3394
    505 0.0287 0.3396 0.3659
    506 0.0287 −0.3396 −0.3659
    507 −0.0287 −0.3396 0.3659
    508 −0.0287 0.3396 −0.3659
    509 0.3659 0.0287 0.3396
    510 0.3659 −0.0287 −0.3396
    511 −0.3659 −0.0287 0.3396
    512 −0.3659 0.0287 −0.3396
    513 0.3396 0.3659 0.0287
    514 0.3396 −0.3659 −0.0287
    515 −0.3396 −0.3659 0.0287
    516 −0.3396 0.3659 −0.0287
    517 0.1352 0.3203 0.3593
    518 0.1352 −0.3203 −0.3593
    519 −0.1352 −0.3203 0.3593
    520 −0.1352 0.3203 −0.3593
    521 0.3593 0.1352 0.3203
    522 0.3593 −0.1352 −0.3203
    523 −0.3593 −0.1352 0.3203
    524 −0.3593 0.1352 −0.3203
    525 0.3203 0.3593 0.1352
    526 0.3203 −0.3593 −0.1352
    527 −0.3203 −0.3593 0.1352
    528 −0.3203 0.3593 −0.1352
    529 0.3436 0.0842 0.3533
    530 0.3436 −0.0842 −0.3533
    531 −0.3436 −0.0842 0.3533
    532 −0.3436 0.0842 −0.3533
    533 0.3533 0.3436 0.0842
    534 0.3533 −0.3436 −0.0842
    535 −0.3533 −0.3436 0.0842
    536 −0.3533 0.3436 −0.0842
    537 0.0842 0.3533 0.3436
    538 0.0842 −0.3533 −0.3436
    539 −0.0842 −0.3533 0.3436
    540 −0.0842 0.3533 −0.3436
    541 0.3091 −0.1762 0.3513
    542 0.3091 0.1762 −0.3513
    543 −0.3091 0.1762 0.3513
    544 −0.3091 −0.1762 −0.3513
    545 0.3513 −0.3091 0.1762
    546 0.3513 0.3091 −0.1762
    547 −0.3513 0.3091 0.1762
    548 −0.3513 −0.3091 −0.1762
    549 0.1762 −0.3513 0.3091
    550 0.1762 0.3513 −0.3091
    551 −0.1762 0.3513 0.3091
    552 −0.1762 −0.3513 −0.3091
    553 0.3491 −0.0753 0.3499
    554 0.3491 0.0753 −0.3499
    555 −0.3491 0.0753 0.3499
    556 −0.3491 −0.0753 −0.3499
    557 0.3499 −0.3491 0.0753
    558 0.3499 0.3491 −0.0753
    559 −0.3499 0.3491 0.0753
    560 −0.3499 −0.3491 −0.0753
    561 0.0753 −0.3499 0.3491
    562 0.0753 0.3499 −0.3491
    563 −0.0753 0.3499 0.3491
    564 −0.0753 −0.3499 −0.3491
    565 0.1931 −0.3025 0.3481
    566 0.1931 0.3025 −0.3481
    567 −0.1931 0.3025 0.3481
    568 −0.1931 −0.3025 −0.3481
    569 0.3481 −0.1931 0.3025
    570 0.3481 0.1931 −0.3025
    571 −0.3481 0.1931 0.3025
    572 −0.3481 −0.1931 −0.3025
    573 0.3025 −0.3481 0.1931
    574 0.3025 0.3481 −0.1931
    575 −0.3025 0.3481 0.1931
    576 −0.3025 −0.3481 −0.1931
    577 0.2495 −0.2708 0.3383
    578 0.2495 0.2708 −0.3383
    579 −0.2495 0.2708 0.3383
    580 −0.2495 −0.2708 −0.3383
    581 0.3383 −0.2495 0.2708
    582 0.3383 0.2495 −0.2708
    583 −0.3383 0.2495 0.2708
    584 −0.3383 −0.2495 −0.2708
    585 0.2708 −0.3383 0.2495
    586 0.2708 0.3383 −0.2495
    587 −0.2708 0.3383 0.2495
    588 −0.2708 −0.3383 −0.2495
    589 0.2392 0.2873 0.3320
    590 0.2392 −0.2873 −0.3320
    591 −0.2392 −0.2873 0.3320
    592 −0.2392 0.2873 −0.3320
    593 0.3320 0.2392 0.2873
    594 0.3320 −0.2392 −0.2873
    595 −0.3320 −0.2392 0.2873
    596 −0.3320 0.2392 −0.2873
    597 0.2873 0.3320 0.2392
    598 0.2873 −0.3320 −0.2392
    599 −0.2873 −0.3320 0.2392
    600 −0.2873 0.3320 −0.2392
    601 0.3254 0.1894 0.3289
    602 0.3254 −0.1894 −0.3289
    603 −0.3254 −0.1894 0.3289
    604 −0.3254 0.1894 −0.3289
    605 0.3289 0.3254 0.1894
    606 0.3289 −0.3254 −0.1894
    607 −0.3289 −0.3254 0.1894
    608 −0.3289 0.3254 −0.1894
    609 0.1894 0.3289 0.3254
    610 0.1894 −0.3289 −0.3254
    611 −0.1894 −0.3289 0.3254
    612 −0.1894 0.3289 −0.3254
    613 0.2887 0.2887 0.2887
    614 0.2887 0.2887 −0.2887
    615 0.2887 −0.2887 0.2887
    616 0.2887 −0.2887 −0.2887
    617 −0.2887 0.2887 0.2887
    618 −0.2887 0.2887 −0.2887
    619 −0.2887 −0.2887 0.2887
    620 −0.2887 −0.2887 −0.2887
  • TABLE 5
    Sphere x/D y/D z/D d/D
    1 0.3189 0.0000 0.5160 0.2254
    2 0.3189 0.0000 −0.5160 0.2254
    3 −0.3189 0.0000 0.5160 0.2254
    4 −0.3189 0.0000 −0.5160 0.2254
    5 0.5160 −0.3189 0.0000 0.2254
    6 0.5160 0.3189 0.0000 0.2254
    7 −0.5160 0.3189 0.0000 0.2254
    8 −0.5160 −0.3189 0.0000 0.2254
    9 0.0000 −0.5160 0.3189 0.2254
    10 0.0000 0.5160 −0.3189 0.2254
    11 0.0000 0.5160 0.3189 0.2254
    12 0.0000 −0.5160 −0.3189 0.2254
    13 0.0794 0.2166 0.7473 0.5800
    14 0.0159 0.3710 0.6884 0.5800
    15 −0.0954 0.2425 0.7375 0.5800
    16 −0.0794 0.2166 −0.7473 0.5800
    17 −0.0159 0.3710 −0.6884 0.5800
    18 0.0954 0.2425 −0.7375 0.5800
    19 −0.0794 −0.2166 0.7473 0.5800
    20 −0.0159 −0.3710 0.6884 0.5800
    21 0.0954 −0.2425 0.7375 0.5800
    22 0.0794 −0.2166 −0.7473 0.5800
    23 0.0159 −0.3710 −0.6884 0.5800
    24 −0.0954 −0.2425 −0.7375 0.5800
    25 0.7473 0.0794 0.2166 0.5800
    26 0.6884 0.0159 0.3710 0.5800
    27 0.7375 −0.0954 0.2425 0.5800
    28 0.7473 −0.0794 −0.2166 0.5800
    29 0.6884 −0.0159 −0.3710 0.5800
    30 0.7375 0.0954 −0.2425 0.5800
    31 −0.7473 −0.0794 0.2166 0.5800
    32 −0.6884 −0.0159 0.3710 0.5800
    33 −0.7375 0.0954 0.2425 0.5800
    34 −0.7473 0.0794 −0.2166 0.5800
    35 −0.6884 0.0159 −0.3710 0.5800
    36 −0.7375 −0.0954 −0.2425 0.5800
    37 0.2166 0.7473 0.0794 0.5800
    38 0.3710 0.6884 0.0159 0.5800
    39 0.2425 0.7375 −0.0954 0.5800
    40 0.2166 −0.7473 −0.0794 0.5800
    41 0.3710 −0.6884 −0.0159 0.5800
    42 0.2425 −0.7375 0.0954 0.5800
    43 −0.2166 0.7473 −0.0794 0.5800
    44 −0.3710 0.6884 −0.0159 0.5800
    45 −0.2425 0.7375 0.0954 0.5800
    46 −0.2166 −0.7473 0.0794 0.5800
    47 −0.3710 −0.6884 0.0159 0.5800
    48 −0.2425 −0.7375 −0.0954 0.5800
    49 0.4459 0.3763 0.5208 0.5800
    50 0.5208 0.4459 0.3763 0.5800
    51 0.3763 0.5208 0.4459 0.5800
    52 0.3665 0.5049 −0.4717 0.5800
    53 0.5049 0.4717 −0.3665 0.5800
    54 0.4717 0.3665 −0.5049 0.5800
    55 0.3665 −0.5049 0.4717 0.5800
    56 0.5049 −0.4717 0.3665 0.5800
    57 0.4717 −0.3665 0.5049 0.5800
    58 0.4459 −0.3763 −0.5208 0.5800
    59 0.5208 −0.4459 −0.3763 0.5800
    60 0.3763 −0.5208 −0.4459 0.5800
    61 −0.3665 0.5049 0.4717 0.5800
    62 −0.5049 0.4717 0.3665 0.5800
    63 −0.4717 0.3665 0.5049 0.5800
    64 −0.4459 0.3763 −0.5208 0.5800
    65 −0.5208 0.4459 −0.3763 0.5800
    66 −0.3763 0.5208 −0.4459 0.5800
    67 −0.4459 −0.3763 0.5208 0.5800
    68 −0.5208 −0.4459 0.3763 0.5800
    69 −0.3763 −0.5208 0.4459 0.5800
    70 −0.3665 −0.5049 −0.4717 0.5800
    71 −0.5049 −0.4717 −0.3665 0.5800
    72 −0.4717 −0.3665 −0.5049 0.5800
    73 0.0315 −0.0822 0.7752 0.5761
    74 0.0315 0.0822 −0.7752 0.5761
    75 −0.0315 0.0822 0.7752 0.5761
    76 −0.0315 −0.0822 −0.7752 0.5761
    77 0.7752 −0.0315 0.0822 0.5761
    78 0.7752 0.0315 −0.0822 0.5761
    79 −0.7752 0.0315 0.0822 0.5761
    80 −0.7752 −0.0315 −0.0822 0.5761
    81 0.0822 −0.7752 0.0315 0.5761
    82 0.0822 0.7752 −0.0315 0.5761
    83 −0.0822 0.7752 0.0315 0.5761
    84 −0.0822 −0.7752 −0.0315 0.5761
    85 0.1888 0.3367 0.6780 0.5761
    86 0.1888 −0.3367 −0.6780 0.5761
    87 −0.1888 −0.3367 0.6780 0.5761
    88 −0.1888 0.3367 −0.6780 0.5761
    89 0.6780 0.1888 0.3367 0.5761
    90 0.6780 −0.1888 −0.3367 0.5761
    91 −0.6780 −0.1888 0.3367 0.5761
    92 −0.6780 0.1888 −0.3367 0.5761
    93 0.3367 0.6780 0.1888 0.5761
    94 0.3367 −0.6780 −0.1888 0.5761
    95 −0.3367 −0.6780 0.1888 0.5761
    96 −0.3367 0.6780 −0.1888 0.5761
    97 0.1573 −0.3877 0.6585 0.5761
    98 0.1573 0.3877 −0.6585 0.5761
    99 −0.1573 0.3877 0.6585 0.5761
    100 −0.1573 −0.3877 −0.6585 0.5761
    101 0.6585 −0.1573 0.3877 0.5761
    102 0.6585 0.1573 −0.3877 0.5761
    103 −0.6585 0.1573 0.3877 0.5761
    104 −0.6585 −0.1573 −0.3877 0.5761
    105 0.3877 −0.6585 0.1573 0.5761
    106 0.3877 0.6585 −0.1573 0.5761
    107 −0.3877 0.6585 0.1573 0.5761
    108 −0.3877 −0.6585 −0.1573 0.5761
    109 0.3218 −0.3875 0.5958 0.5761
    110 0.3218 0.3875 −0.5958 0.5761
    111 −0.3218 0.3875 0.5958 0.5761
    112 −0.3218 −0.3875 −0.5958 0.5761
    113 0.5958 −0.3218 0.3875 0.5761
    114 0.5958 0.3218 −0.3875 0.5761
    115 −0.5958 0.3218 0.3875 0.5761
    116 −0.5958 −0.3218 −0.3875 0.5761
    117 0.3875 −0.5958 0.3218 0.5761
    118 0.3875 0.5958 −0.3218 0.5761
    119 −0.3875 0.5958 0.3218 0.5761
    120 −0.3875 −0.5958 −0.3218 0.5761
    121 0.2903 0.4385 0.5763 0.5761
    122 0.2903 −0.4385 −0.5763 0.5761
    123 −0.2903 −0.4385 0.5763 0.5761
    124 −0.2903 0.4385 −0.5763 0.5761
    125 0.5763 0.2903 0.4385 0.5761
    126 0.5763 −0.2903 −0.4385 0.5761
    127 −0.5763 −0.2903 0.4385 0.5761
    128 −0.5763 0.2903 −0.4385 0.5761
    129 0.4385 0.5763 0.2903 0.5761
    130 0.4385 −0.5763 −0.2903 0.5761
    131 −0.4385 −0.5763 0.2903 0.5761
    132 −0.4385 0.5763 −0.2903 0.5761
    133 0.1373 0.0529 0.7524 0.5487
    134 0.1373 −0.0529 −0.7524 0.5487
    135 −0.1373 −0.0529 0.7524 0.5487
    136 −0.1373 0.0529 −0.7524 0.5487
    137 0.7524 −0.1373 −0.0529 0.5487
    138 0.7524 0.1373 0.0529 0.5487
    139 −0.7524 0.1373 −0.0529 0.5487
    140 −0.7524 −0.1373 0.0529 0.5487
    141 −0.0529 −0.7524 0.1373 0.5487
    142 −0.0529 0.7524 −0.1373 0.5487
    143 0.0529 0.7524 0.1373 0.5487
    144 0.0529 −0.7524 −0.1373 0.5487
    145 0.2584 −0.2488 0.6775 0.5487
    146 0.2584 0.2488 −0.6775 0.5487
    147 −0.2584 0.2488 0.6775 0.5487
    148 −0.2584 −0.2488 −0.6775 0.5487
    149 0.6775 −0.2584 0.2488 0.5487
    150 0.6775 0.2584 −0.2488 0.5487
    151 −0.6775 0.2584 0.2488 0.5487
    152 −0.6775 −0.2584 −0.2488 0.5487
    153 0.2488 −0.6775 0.2584 0.5487
    154 0.2488 0.6775 −0.2584 0.5487
    155 −0.2488 0.6775 0.2584 0.5487
    156 −0.2488 −0.6775 −0.2584 0.5487
    157 0.3439 0.2815 0.6247 0.5487
    158 0.3439 −0.2815 −0.6247 0.5487
    159 −0.3439 −0.2815 0.6247 0.5487
    160 −0.3439 0.2815 −0.6247 0.5487
    161 0.6247 0.3439 0.2815 0.5487
    162 0.6247 −0.3439 −0.2815 0.5487
    163 −0.6247 −0.3439 0.2815 0.5487
    164 −0.6247 0.3439 −0.2815 0.5487
    165 0.2815 0.6247 0.3439 0.5487
    166 0.2815 −0.6247 −0.3439 0.5487
    167 −0.2815 −0.6247 0.3439 0.5487
    168 −0.2815 0.6247 −0.3439 0.5487
    169 0.1211 0.4709 0.5927 0.5487
    170 0.1211 −0.4709 −0.5927 0.5487
    171 −0.1211 −0.4709 0.5927 0.5487
    172 −0.1211 0.4709 −0.5927 0.5487
    173 0.5927 0.1211 0.4709 0.5487
    174 0.5927 −0.1211 −0.4709 0.5487
    175 −0.5927 −0.1211 0.4709 0.5487
    176 −0.5927 0.1211 −0.4709 0.5487
    177 0.4709 0.5927 0.1211 0.5487
    178 0.4709 −0.5927 −0.1211 0.5487
    179 −0.4709 −0.5927 0.1211 0.5487
    180 −0.4709 0.5927 −0.1211 0.5487
    181 0.2066 −0.5036 0.5399 0.5487
    182 0.2066 0.5036 −0.5399 0.5487
    183 −0.2066 0.5036 0.5399 0.5487
    184 −0.2066 −0.5036 −0.5399 0.5487
    185 0.5399 −0.2066 0.5036 0.5487
    186 0.5399 0.2066 −0.5036 0.5487
    187 −0.5399 0.2066 0.5036 0.5487
    188 −0.5399 −0.2066 −0.5036 0.5487
    189 0.5036 −0.5399 0.2066 0.5487
    190 0.5036 0.5399 −0.2066 0.5487
    191 −0.5036 0.5399 0.2066 0.5487
    192 −0.5036 −0.5399 −0.2066 0.5487
    193 0.1942 −0.1019 0.7251 0.5304
    194 0.1942 0.1019 −0.7251 0.5304
    195 −0.1942 0.1019 0.7251 0.5304
    196 −0.1942 −0.1019 −0.7251 0.5304
    197 0.7251 −0.1942 0.1019 0.5304
    198 0.7251 0.1942 −0.1019 0.5304
    199 −0.7251 0.1942 0.1019 0.5304
    200 −0.7251 −0.1942 −0.1019 0.5304
    201 0.1019 −0.7251 0.1942 0.5304
    202 0.1019 0.7251 −0.1942 0.5304
    203 −0.1019 0.7251 0.1942 0.5304
    204 −0.1019 −0.7251 −0.1942 0.5304
    205 0.2387 0.1739 0.6976 0.5304
    206 0.2387 −0.1739 −0.6976 0.5304
    207 −0.2387 −0.1739 0.6976 0.5304
    208 −0.2387 0.1739 −0.6976 0.5304
    209 0.6976 0.2387 0.1739 0.5304
    210 0.6976 −0.2387 −0.1739 0.5304
    211 −0.6976 −0.2387 0.1739 0.5304
    212 −0.6976 0.2387 −0.1739 0.5304
    213 0.1739 0.6976 0.2387 0.5304
    214 0.1739 −0.6976 −0.2387 0.5304
    215 −0.1739 −0.6976 0.2387 0.5304
    216 −0.1739 0.6976 −0.2387 0.5304
    217 0.4037 −0.2369 0.5957 0.5304
    218 0.4037 0.2369 −0.5957 0.5304
    219 −0.4037 0.2369 0.5957 0.5304
    220 −0.4037 −0.2369 −0.5957 0.5304
    221 0.5957 −0.4037 0.2369 0.5304
    222 0.5957 0.4037 −0.2369 0.5304
    223 −0.5957 0.4037 0.2369 0.5304
    224 −0.5957 −0.4037 −0.2369 0.5304
    225 0.2369 −0.5957 0.4037 0.5304
    226 0.2369 0.5957 −0.4037 0.5304
    227 −0.2369 0.5957 0.4037 0.5304
    228 −0.2369 −0.5957 −0.4037 0.5304
    229 0.0445 −0.4882 0.5776 0.5304
    230 0.0445 0.4882 −0.5776 0.5304
    231 −0.0445 0.4882 0.5776 0.5304
    232 −0.0445 −0.4882 −0.5776 0.5304
    233 0.5776 −0.0445 0.4882 0.5304
    234 0.5776 0.0445 −0.4882 0.5304
    235 −0.5776 0.0445 0.4882 0.5304
    236 −0.5776 −0.0445 −0.4882 0.5304
    237 0.4882 −0.5776 0.0445 0.5304
    238 0.4882 0.5776 −0.0445 0.5304
    239 −0.4882 0.5776 0.0445 0.5304
    240 −0.4882 −0.5776 −0.0445 0.5304
    241 0.4757 0.2094 0.5512 0.5304
    242 0.4757 −0.2094 −0.5512 0.5304
    243 −0.4757 −0.2094 0.5512 0.5304
    244 −0.4757 0.2094 −0.5512 0.5304
    245 0.5512 0.4757 0.2094 0.5304
    246 0.5512 −0.4757 −0.2094 0.5304
    247 −0.5512 −0.4757 0.2094 0.5304
    248 −0.5512 0.4757 −0.2094 0.5304
    249 0.2094 0.5512 0.4757 0.5304
    250 0.2094 −0.5512 −0.4757 0.5304
    251 −0.2094 −0.5512 0.4757 0.5304
    252 −0.2094 0.5512 −0.4757 0.5304
    253 0.2679 0.0224 0.6585 0.4368
    254 0.2679 −0.0224 −0.6585 0.4368
    255 −0.2679 −0.0224 0.6585 0.4368
    256 −0.2679 0.0224 −0.6585 0.4368
    257 0.6585 −0.2679 −0.0224 0.4368
    258 0.6585 0.2679 0.0224 0.4368
    259 −0.6585 0.2679 −0.0224 0.4368
    260 −0.6585 −0.2679 0.0224 0.4368
    261 −0.0224 −0.6585 0.2679 0.4368
    262 −0.0224 0.6585 −0.2679 0.4368
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    275 −0.1056 0.6267 0.3193 0.4368
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    279 −0.3556 −0.1194 0.6043 0.4368
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    287 −0.1194 −0.6043 0.3556 0.4368
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    291 −0.4387 0.0877 0.5529 0.4368
    292 −0.4387 −0.0877 −0.5529 0.4368
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    295 −0.5529 0.4387 0.0877 0.4368
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  • The foregoing description and drawings should be considered as illustrative only of the principles of the invention. The invention may be configured in a variety of shapes and sizes and is not intended to be limited by the embodiment shown. In addition, the statements made with respect to one embodiment apply to the other embodiments, unless otherwise specifically noted. For example, the statements regarding FIG. 2(a) with respect to size, shape and geometry apply equally to the embodiments of FIGS. 3, 7-9, 12. It is further understood that the description and scope of invention apply equally (though the descriptions have not been repeated) for each structure that is the same or similar between each of the various embodiment, and whether or not those structures have been assigned a similar reference numeral.
  • Numerous applications of the invention will readily occur to those skilled in the art. Therefore, it is not desired to limit the invention to the specific examples disclosed or the exact construction and operation shown and described. Rather, all suitable modifications and equivalents may be resorted to, falling within the scope of the invention.

Claims (17)

1. A golf ball comprising:
a body having an outer shell with an outersurface; and
a pattern formed in the outer surface of said body, the pattern comprising a polyhedron having a plurality of flat faces, each of said plurality of flat faces having one or more sharp edges.
2. The golf ball of claim 1, wherein said plurality of faces are circumscribed in a sphere, wherein only the sharp corners forming vertices of the polyhedron lie on the sphere.
3. The golf ball of claim 2, said sphere having a diameter of at least 1·68 in.
4. The golf ball of claim 1, wherein at least one of the plurality of faces of the polyhedron contains one or more dimples.
5. The golf ball of claim 1, wherein said plurality of faces are each in a plane.
6. The golf ball of claim 1, wherein said plurality of faces are contiguous to touch one another and form a single continuous outer surface of said body.
7. The golf ball of claim 1, wherein said plurality of faces are at an angle with respect to one another to define said one or more sharp edges and said one or more sharp corners.
8. The golf ball of claim 1, wherein said pattern comprises a Goldberg polyhedron.
9. The golf ball of claim 1, wherein said plurality of faces comprise a plurality of first faces having a first shape and a plurality of second faces having a second shape.
10. The golf ball of claim 9, wherein said first shape comprises a pentagon and said second shape comprises a hexagon.
11. The golf ball of claim 9, wherein said plurality of first faces comprise twelve and said plurality of second faces comprise 150.
12. The golf ball of claim 9, wherein a ration of said plurality of first faces to said plurality of second faces comprises 12.5:1.
13. The golf ball of claim 1, wherein said plurality of flat faces having one or more sharp corners.
14. The golf ball of claim 1, wherein said edges are linear.
15. The golf ball of claim 1, wherein two neighboring flat faces form an angle substantially less than 180 degrees.
16. The golf ball of claim 1, wherein said sharp edges have a radius of curvature that is less than 0.001 D, where D is the diameter of a circumscribed sphere of said golf ball.
17. A method of forming a golf ball, comprising:
forming an outer surface; and,
forming a pattern in the outer surface, the pattern having a plurality of flat surfaces defining sharp edges and points therebetween.
US16/771,676 2018-01-12 2019-01-10 Polyhedra golf ball with lower drag coefficient Abandoned US20210197029A1 (en)

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US201862616861P 2018-01-12 2018-01-12
PCT/US2019/013052 WO2019140090A1 (en) 2018-01-12 2019-01-10 Polyhedra golf ball with lower drag coefficient
US16/771,676 US20210197029A1 (en) 2018-01-12 2019-01-10 Polyhedra golf ball with lower drag coefficient

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US11426634B2 (en) * 2018-12-19 2022-08-30 Sumitomo Rubber Industries, Ltd. Golf ball

Family Cites Families (8)

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Publication number Priority date Publication date Assignee Title
US2861810A (en) * 1954-12-10 1958-11-25 Veatch Franklin Golf ball
US4765626A (en) * 1987-06-04 1988-08-23 Acushnet Company Golf ball
US6905426B2 (en) * 2002-02-15 2005-06-14 Acushnet Company Golf ball with spherical polygonal dimples
US6695720B2 (en) * 2002-05-29 2004-02-24 Acushnet Company Golf ball with varying land surfaces
JP4129625B2 (en) * 2002-10-17 2008-08-06 ブリヂストンスポーツ株式会社 Golf ball
JP2005034366A (en) * 2003-07-14 2005-02-10 Sumitomo Rubber Ind Ltd Golf ball
JP4626146B2 (en) * 2003-12-24 2011-02-02 横浜ゴム株式会社 Golf ball, golf ball design method and golf ball manufacturing mold
JP5082806B2 (en) * 2006-11-29 2012-11-28 横浜ゴム株式会社 Golf ball and golf ball manufacturing method

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US11426634B2 (en) * 2018-12-19 2022-08-30 Sumitomo Rubber Industries, Ltd. Golf ball

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JP2021510578A (en) 2021-04-30

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