Classifications

• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
  • B63B—SHIPS OR OTHER WATERBORNE VESSELS; EQUIPMENT FOR SHIPPING 
  • B63B32/00—Water sports boards; Accessories therefor
  • B63B32/40—Twintip boards; Wakeboards; Surfboards; Windsurfing boards; Paddle boards, e.g. SUP boards; Accessories specially adapted therefor
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
  • B63B—SHIPS OR OTHER WATERBORNE VESSELS; EQUIPMENT FOR SHIPPING 
  • B63B32/00—Water sports boards; Accessories therefor
  • B63B32/60—Board appendages, e.g. fins, hydrofoils or centre boards
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
  • B63H—MARINE PROPULSION OR STEERING
  • B63H8/00—Sail or rigging arrangements specially adapted for water sports boards, e.g. for windsurfing or kitesurfing
  • B63H8/20—Rigging arrangements involving masts, e.g. for windsurfing
  • B63H8/21—Wishbones
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
  • B63H—MARINE PROPULSION OR STEERING
  • B63H8/00—Sail or rigging arrangements specially adapted for water sports boards, e.g. for windsurfing or kitesurfing
  • B63H8/40—Arrangements for improving or maintaining the aerodynamic profile of sails, e.g. cambers, battens or foil profiles
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
  • B63H—MARINE PROPULSION OR STEERING
  • B63H9/00—Marine propulsion provided directly by wind power
  • B63H9/04—Marine propulsion provided directly by wind power using sails or like wind-catching surfaces
  • B63H9/06—Types of sail; Constructional features of sails; Arrangements thereof on vessels
  • B63H9/061—Rigid sails; Aerofoil sails
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
  • B63H—MARINE PROPULSION OR STEERING
  • B63H9/00—Marine propulsion provided directly by wind power
  • B63H9/04—Marine propulsion provided directly by wind power using sails or like wind-catching surfaces
  • B63H9/06—Types of sail; Constructional features of sails; Arrangements thereof on vessels
  • B63H9/061—Rigid sails; Aerofoil sails
  • B63H9/0615—Inflatable aerofoil sails

Definitions

• the invention relates to a rig and a floating or rolling vehicle equipped with such a rig.
• the invention relates to a floating machine of the windsurfing type or to a rolling machine of the windsurfing type with wheels, designated “speed sail” or “windskate” in English.
• a windsurf board consists of a float and a rig mounted on the float and to ensure the propulsion of windsurfing by the force of the wind.
• the rigging of the prior art comprise a mast articulated on the float, a triangular sail mounted on the mast and a double boom, commonly called "boom", to maintain and orient the rigging.
• the wishbone consists of two curved tubes arranged on both sides of the sail and joining at their ends, on the one hand to the mast, and on the other hand to the point of flow of the sail in order to stretch it.
• This rigging configuration imposes a particular type of navigation, requiring particularly delicate maneuvers.
• a tack that is to say a change of tack against the wind
• a jibe that is to say a change of tack to the wind
• the windsurfer must rotate the rigging and seize the opposite part of the boom, that is to say the part of the boom arranged on the other side of the sail, so as to pass the trailing edge of the sail from one edge to the other. the other of the board.
• the windsurfer must tilt the rigging to the rear, release a portion of the boom, and change tack in passing the rigging, in order to grasp the other part of the boom and rotate the boom. sail.
• the hands of the windsurfer pass from one part to the other of the boom in order to be able to rotate the sail by 180 °.
• a rig for a floating or rolling vehicle comprising:
• a foot box intended to be mounted articulated on said machine
• a sail extending between said two masts and having a crown; At least one boom connecting said two masts transversely to the theoretical plane of said boom dividing said sail into two parts: a surface of said sail starting from said plane and extending towards said foot box and a surface of said sail starting from said plane and extending to the top, said boom for maintaining and / or orienting said rig.
• Said sail is semi-rigid and at rest has at least one stable shape
• Said two masts are symmetrical with respect to a longitudinal axis of said rig, extending between said top of said sail and said foot box, so that each mast is able to serve alternately as leading edge and as edge edge. leak,
• Said at least one stable form of said sail has at rest a camber whose concavity is directed towards said boom, and whose maximum hollow is located at the surface of said sail starting from said plane and extending towards said housing; foot.
• the term "semi-rigid” qualifies an at least partially rigid surface having a predetermined shape and being provided with a shape memory by which this surface tends, following a mechanical deformation, to resume its original form.
• a sail made up of such a surface therefore has at least one stable camber, the hollow value of which is measured locally along the normal to the rope plane of the sail, defined by the two masts alternately serving as the edge of the sail. attack and trailing edge. Under the action of the wind, the force or thrust is substantially perpendicular to this plane of rope and is concentrated at the maximum hollow of the sail.
• boom refers to a horizontal bar connecting the two masts and extending transversely to the rigging on one side or the other of the chord plane.
• Such a boom is also called a simple boom, as opposed to a double boom resulting from the assembly of two simple booms extending on either side of the chord plane.
• the "theoretical plane of the boom” designates the plane defined by the boom which is substantially perpendicular to the plane of rope.
• the sail is then divided into two parts or portions, the first, located above the boom, extending between the intersection of the sail with the boom plane and the top, the second, located below the boom, extending between the intersection of the sail with the boom plane and the foot box. Note that this division of the sail by the boom plane is only for illustrative purposes, the sail forming a united surface joining the localized portions above and below the boom.
• the invention is thus based on the novel and inventive concept of providing a rig whose handling is substantially improved, and which allows to go upwind.
• a rig allows the windsurfer to navigate in all directions without having to return the rigging as in the rigs of the prior art, and therefore, without the need to release the rigging hands.
• each of the two masts being able to serve alternately leading edge and trailing edge, it is no longer necessary to return the sail when changing tack.
• Such rigging also allows the windsurfer to go upwind.
• the arched shape of the sail whose hollow is advantageously low, allows the windsurfer to work in finesse, that is to say by orienting the sail so that the rope forms a low angle of incidence with the direction of the wind.
• the flow of the wind on the intrados and the extrados of the sail is then laminar, and allows to create a significant lift while limiting the generation of turbulence, so as to allow upwind.
• the semi-rigid nature of the sail allows it to maintain a predefined profile, allowing to optimize the ability of the sail to go upwind, while fixing the position of its maximum hollow. Positioning the maximum hollow of the sail below the at least one boom improves its maneuverability.
• the rig comprises a second boom, the first boom and said second boom being arranged in the plane of the boom, on either side of said sail, said sail taking alternately at rest two stable shapes presenting at rest a camber whose concavity is directed either to the first boom or to said second boom, and whose maximum hollow is located at the surface of said sail from said plane and extending towards said foot housing.
• the passage of the sail from one arched shape to another or in other words, the passage of the hollow of the sail from one side to the other of the rope plane can be realized following the implementation on the upper surface of the sail of a sailing thrust force exceeding a predefined threshold.
• said surface of said sail extending towards said foot box is larger than said surface of said sail extending towards said crown.
• the average value of the hollow of said sail is between 2.5% and 7.5% of the average value of the rope of said sail.
• the average values of trough and chord are measured at the level of the plane of boom. Maintaining an average trough value in such an interval improves the fineness of the sail, and therefore its ability to go upwind. For a value less than this interval, there is a drop in lift. For a higher value, the sail enters turbulent regime unacceptable to go upwind.
• the ratio of the longitudinal length of said sail to the maximum rope of said sail is greater than 1.5.
• the two masts have in the vicinity of said boom an arcuate shape whose convexity is oriented towards the outside of the rigging.
• the two masts have near said vertex and / or near said foot box an arcuate shape whose convexity is oriented towards the inside of said rig.
• the masts are profiled tubular elements having an ovoid section whose largest dimension is oriented in the transverse direction.
• the sail comprises at least one stiffening element.
• the section of the sail makes it possible to preform a hollow.
• said stiffening element is a transverse lath inserted into a gusset carried by said sail.
• said masts and / or said stiffening element and / or said sail are inflatable.
• said boom has an adjustable length to allow a voltage adjustment of said sail.
• At least one of said booms comprises a cam pivoting around said boom and being adapted to come into contact with said sail.
• the invention also relates to a floating or rolling apparatus comprising a rig comprising:
• a foot box intended to be mounted articulated on said machine
• a sail extending between said two masts and having a crown
• At least one boom connecting said two masts transversely to the theoretical plane of said boom dividing said sail into two parts: a surface of said sail starting from said plane and extending towards said foot box and a surface of said sail starting from said plane and extending towards the top, said boom making it possible to maintain and / or orient said rig,
• said sail being a semi-rigid surface resting at least one stable form
• each mast being symmetrical with respect to a longitudinal axis of said rig, extending between said top of said sail and said foot box, so that each mast is able to serve alternately leading edge and trailing edge ,
• said at least one stable form of said sail having at rest a camber whose concavity is directed towards said boom, and whose maximum hollow is located at the surface of said sail starting from said plane and extending towards said foot casing .
• FIG. windsurfing equipped with a rigging according to the invention
• Figure 1 illustrates a windsurfing equipped with a rigging according to one embodiment of the invention.
• Figure 2 shows the masts, double boom and foot and toe boxes of Figure 1.
• FIG. 1 A sailboard 1 equipped with a rigging 2 according to the invention is shown in FIG. 1
• the windsurfing board 1 comprises a float 3 and a rigging 2 mounted articulated on the float 3.
• the float 3 comprises a thin rigid hull and a steering fin 4, disposed in the rear portion of the float 3, to stabilize the trajectory 1.
• the float 3 may also include a fin, disposed in the central portion, and to prevent the board from deviating from its path under the action of the wind.
• the rigging 2 comprises two masts (6, 7), a double boom 8 connecting the two masts (6, 7) and a sail 9 stretched between the two masts (6, 7) to ensure the propulsion of the windsurf board by the force of the wind.
• the double boom 8 results from the assembly of two simple booms (8a, 8b) extending on either side of the chord plane.
• the double boom 8 defines a plane P substantially perpendicular to the chord plane.
• the sail 9 is then divided into two parts or portions (9a, 9b), the first portion 9b, located above the double boom 8, extending between the intersection of the sail 9 with the boom plane P and the top 18, the second portion 9a, located below the double boom 8, extending between the intersection of the sail 9 with the boom plane P and the foot case 5.
• the two masts (6, 7), shown in Figure 2, have an arcuate shape whose convexity is directed towards the outside of the rigging 2. Thus, the two masts (6, 7) are closer to one of the other at their extremities and move away at their middle part.
• the lower ends of the poles (6, 7) are fixed on a foot box 5.
• the upper ends of the poles (6, 7) are fixed on a head housing 11.
• the foot box 5 is mounted on a mast base 10 having a hinge 13, not shown in detail, for orienting the rigging 2 in all directions.
• the foot casing 5 is advantageously adapted to be mounted on a standard mast base.
• the mast foot 10 is adapted to be removably attached to the float 4.
• the hinge 13 can be made by any suitable means, such as a cardan type connection or a diabolo type connection, for example.
• the masts (6, 7) are symmetrical with respect to the vertical axis X extending between the foot box 5 and the head box 11, that is between the foot box 5 and the top 18 of the sail 9.
• each of the masts (6, 7) is adapted to alternately form a leading edge or a trailing edge depending on the tack and the rigging 2 is thus able to be used unilaterally, without the need to return it.
• the masts (6, 7) are formed of tubular elements having a shaped section of ovoid shape, the largest dimension is oriented in the transverse direction to facilitate the flow of air.
• the masts (6, 7) also have flexibility, especially at their upper portion, adapted to relieve the sail 9 in strong winds.
• each mast (6, 7) consists of an upper tube 6a, 7a and a lower tube 6b, 7b nestable one inside the other.
• the tubes, upper 6a, 7a and lower 6b, 7b, of each mast (6, 7) are secured to each other by fixing means.
• each end of the poles (6, 7) is nested in complementary shaped tubular housings formed in the foot boxes 5 and head 11 and fixed therein by fixing means.
• the double boom 8 is equipped at each of its ends with a half-sleeve 12 which fits on the masts (6, 7) and ensuring the attachment of the double boom 8 on the masts 6, 7.
• the half Sleeves 12 are also equipped with fastening means.
• the aforementioned fixing means may in particular be snap fastening means.
• any other type of attachment may also be used. It is thus understood that the structure of the rig can be easily assembled and dismantled and stored in a transport bag of modest dimensions.
• the sail 9, shown in Figure 1 has a generally ovoid shape whose outer contours follow the shape of the masts (6, 7).
• the sail 9 is composed of transparent surfaces of polyethylene terephthalate (Mylar TM).
• the sail 9 has two sleeves (14, 15) arranged along its two side edges and in which the masts (6, 7) can be threaded to mount the sail 9 on the masts 6, 7.
• the sleeves 14, 15 are each interrupted on a median portion 16 to allow the attachment of the double boom 8 to the masts 6, 7.
• the sail 9 is equipped with stiffening elements arranged to give the sail 9 a camber.
• the sail 9 is mounted on the masts (6, 7) so that the concavity of the sail 9 is oriented vis-à-vis the double boom 8.
• the stiffening elements are transverse slats 17 inserted into gussets worn by the sail 9.
• the double boom 8 has an adjustable length allowing a distance or approximation of the median portions of the masts (6, 7) so as to allow a tension adjustment of the sail 9.
• the maximum hollow 9 'of the sail 9, that is to say the center of thrust of the sail 9, is placed below the axis of the double boom 8 to facilitate navigation and including maneuvers.
• the rigging 2 as described above makes it possible to simplify the navigation maneuvers while allowing upwelling. Indeed, to perform the change of tack maneuvers, the windsurfer rotates in the same direction as the rigging 2 and can permanently keep both hands in position on the boom 8, without having to let go of his rear hand. Indeed, to make a tack, the float 3 is facing the wind, the rig 2 can be moved by rotating in one direction or the other, the choice of the windsurfer. The navigation can then be resumed on the other side.
• the rigging 2 can be moved by simply rocking one side or the other of the float 3, to change tack by completing the turn.
• the windsurfer can at any time play on an opening or closing of the sail 9, coordinated with an action of the feet to initiate transitions.
• rigging according to the invention has been described above in relation to a windsurf board, it can also be mounted on a rolling machine comprising a board equipped with wheels.

Landscapes

• Chemical & Material Sciences (AREA)
• Engineering & Computer Science (AREA)
• Combustion & Propulsion (AREA)
• Mechanical Engineering (AREA)
• Ocean & Marine Engineering (AREA)
• Physics & Mathematics (AREA)
• Fluid Mechanics (AREA)
• Jib Cranes (AREA)
• Wind Motors (AREA)

Applications Claiming Priority (2)

Publications (2)

Family

ID=52016640

Family Applications (1)

Country Status (4)

Families Citing this family (2)

Family Cites Families (10)

• 2014
  • 2014-10-21 FR FR1402358A patent/FR3027281B1/fr not_active Expired - Fee Related
• 2015
  • 2015-10-20 WO PCT/EP2015/074276 patent/WO2016062725A1/fr active Application Filing
  • 2015-10-20 EP EP15786893.6A patent/EP3209551B1/de active Active
  • 2015-10-20 CN CN201580056739.7A patent/CN107074330B/zh active Active

Also Published As

Similar Documents

Legal Events