EP2867111A1 - Unterwasserrumpf eines wasserfahrzeuges - Google Patents
Unterwasserrumpf eines wasserfahrzeugesInfo
- Publication number
- EP2867111A1 EP2867111A1 EP13741659.0A EP13741659A EP2867111A1 EP 2867111 A1 EP2867111 A1 EP 2867111A1 EP 13741659 A EP13741659 A EP 13741659A EP 2867111 A1 EP2867111 A1 EP 2867111A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- point
- underwater hull
- hull
- bow
- length
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
- B63B—SHIPS OR OTHER WATERBORNE VESSELS; EQUIPMENT FOR SHIPPING
- B63B1/00—Hydrodynamic or hydrostatic features of hulls or of hydrofoils
- B63B1/02—Hydrodynamic or hydrostatic features of hulls or of hydrofoils deriving lift mainly from water displacement
- B63B1/04—Hydrodynamic or hydrostatic features of hulls or of hydrofoils deriving lift mainly from water displacement with single hull
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
- B63B—SHIPS OR OTHER WATERBORNE VESSELS; EQUIPMENT FOR SHIPPING
- B63B1/00—Hydrodynamic or hydrostatic features of hulls or of hydrofoils
- B63B1/16—Hydrodynamic or hydrostatic features of hulls or of hydrofoils deriving additional lift from hydrodynamic forces
- B63B1/18—Hydrodynamic or hydrostatic features of hulls or of hydrofoils deriving additional lift from hydrodynamic forces of hydroplane type
- B63B1/20—Hydrodynamic or hydrostatic features of hulls or of hydrofoils deriving additional lift from hydrodynamic forces of hydroplane type having more than one planing surface
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
- B63B—SHIPS OR OTHER WATERBORNE VESSELS; EQUIPMENT FOR SHIPPING
- B63B1/00—Hydrodynamic or hydrostatic features of hulls or of hydrofoils
- B63B1/02—Hydrodynamic or hydrostatic features of hulls or of hydrofoils deriving lift mainly from water displacement
- B63B1/04—Hydrodynamic or hydrostatic features of hulls or of hydrofoils deriving lift mainly from water displacement with single hull
- B63B1/042—Hydrodynamic or hydrostatic features of hulls or of hydrofoils deriving lift mainly from water displacement with single hull the underpart of which being partly provided with channels or the like, e.g. catamaran shaped
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
- B63B—SHIPS OR OTHER WATERBORNE VESSELS; EQUIPMENT FOR SHIPPING
- B63B1/00—Hydrodynamic or hydrostatic features of hulls or of hydrofoils
- B63B1/16—Hydrodynamic or hydrostatic features of hulls or of hydrofoils deriving additional lift from hydrodynamic forces
- B63B1/18—Hydrodynamic or hydrostatic features of hulls or of hydrofoils deriving additional lift from hydrodynamic forces of hydroplane type
- B63B1/20—Hydrodynamic or hydrostatic features of hulls or of hydrofoils deriving additional lift from hydrodynamic forces of hydroplane type having more than one planing surface
- B63B2001/203—Hydrodynamic or hydrostatic features of hulls or of hydrofoils deriving additional lift from hydrodynamic forces of hydroplane type having more than one planing surface arranged in semi-catamaran configuration
Definitions
- the invention relates to a watercraft having an underwater hull extending from a bow to a stern.
- Watercraft are generally known and, for example, wind and / or engine operations. Yachts in particular have different designs, in particular on their underwater hull.
- monohull boats in the exemplary embodiment are designed as flat-bottomed boats or multi-body boats, e.g. known as Catamaran or Trimaran.
- the flat bottom boat has become established, whereas the multihull boats are distinguished for best characteristics in terms of achievable top speed with low energy consumption.
- Vessels with displacement hulls and hulls which are not primarily built to carry large loads in the manner of their intended use, ie primarily their own weight and rather low payload, such as persons and / or equipment, must be seen on their main hull in cross-section predominantly a V-shaped configuration, which may be a Knickspant or a round bulkhead.
- the V-shaped configuration of the main frame e.g. straight or curved (concave or convex) ultimately leads to a relatively large displacement over the distance traveled. The energy required for this is growing high 3 to increase speed.
- Watercraft that are built to carry large loads essentially have a flat bottom, similar to the known flat bottom boats. While the last mentioned "flat bottom vessels" require relatively little energy, but do not have as good driving characteristics, today conventional displacement and hulls have better driving characteristics, but a relatively larger energy requirement.
- the object of the invention is to improve or to provide a vessel of the type mentioned at the beginning, in particular its underwater hull, by simple means which has low energy consumption in all speed ranges of the vessel with good driving characteristics, and in which a least possible wave formation is generated.
- the object is achieved by a watercraft with the features of claim 1.
- a vessel having an underwater hull extending from a bow to a stern, which is straight across the longitudinal axis of the vessel, but which has a curve from the bow towards the stern is proposed
- Underwater hull has several, each submerged immersion depth ranges, the maximum depth of the underwater hull is reached aft at a distance of about 25% of the total water line from the stern and that the underwater hull has two parallel aligned float elements, which from the bow area, the extending in the axial direction of the underwater hull center of the same extend aft.
- the invention thus relates to the design of an underwater ship, which extends from the bow to the stern.
- the underwater vessel consists essentially of a bottom plate, which is led by the bow just above the waterline in several arches to the maximum diving depth of the skin rump, and has two swimmers, which are arranged below this ground, parallel to the longitudinal axis of the ship, between outboard and Center longitudinal axis are positioned.
- the swimmers have two tasks. On the one hand, they are to take over the predominant load capacity for the first 2/3 to% of the ship's length. On the other hand, they have a guiding function for the water displaced by the floats to the center of the ship.
- the water displaced to the middle is directed on three sides by the two floats and the bottom plate laid down in several arches, so that close to the center of mass a hydrodynamic effect arises, which is able to lift the ship with increasing speed from the water and thus with increasing Drive to reduce the wetted area.
- the design of the floats determines the total immersion depth.
- the bottom plate extends from the bow area to the rear.
- the bottom plate seen in side view is curved, quasi executed in a flat S-arc, with several, preferably three inflection points and each start or end point and thus several, preferably two immersion depth regions are provided.
- the depth of the main hull part so beneficial in two Diving depth ranges, and is defined by the definition of five points or turning points, by which the contour of the main hull is interpolated.
- the five inflection points define four axial length lengths that represent the design length of the floor slab, which is led from the bow just above the waterline in multiple arcs to the maximum depth of the skin ridge.
- the location of the five points is indicated by the distances on the central axis of the ship and the height to the waterline of the ship at rest.
- WLR describes in the sense of the invention, the assumed waterline at rest during medium voyage of the ship.
- the assumed waterline at rest is determined by the total weight of the ship, which would only have to be borne by the main hull if the bottom plate was flat.
- approximately Vz of the total immersion depth of the main hull should be above the assumed waterline.
- given dimensions and values are to be understood as exemplary only.
- a second point or inflection point arranged between the starting point and a third point or inflection point is a height-variable auxiliary point. On the longitudinal axis it is about 9% of the design length of the bottom plate behind (ie seen in the direction of the stern) the starting point.
- the third inflection point is an essential construction point, which lies 1/6 of the construction length of the base plate behind the starting point in its longitudinal distance.
- the altitude or depth is preferably about 40% of the total immersion depth of the main hull.
- a fourth point or inflection point is the design point that is% before the end of the design length of the bottom plate on the main axis. It lies in its height on the amount of the diving depth of the main hull.
- the second depth or the second depth of dip is described in the third section.
- the contour of the bottom plate forms a right arc in the interpolation from the third point, which soon changes to a left arc, to get to the fourth point. Due to the slight change in the altitude of the starting point and the second point or inflection point, the naturally occurring inflection point is set by the right arc in a left arc within the third distance so that the naturally occurring inflection point is located in front of the center of gravity of the hull. This is the only way that the resulting hydrodynamic effect can lift the bow area out of the water with increasing speed of the vessel in order to reduce the wetted surface of the main hull with increasing speed.
- an endpoint is at the same height as the fourth point or inflection point at the end of the bottom plate.
- the float elements extend parallel to the longitudinal central axis of the vessel or of the underwater vessel.
- two float elements are provided, which are equally spaced on both sides of the central longitudinal axis to this and identical executed.
- the float elements have a bow area, a central area and a stern area. Overall, the float elements on a length, which corresponds to 70% of the total length of the underwater hull.
- the bow portion has an axial length amount of about 20% of the float element length, wherein the rear portion has a length amount of about 25% of the float element length.
- the rear area is thus carried out with respect to the total swimmer length with a greater amount of length than the bow area.
- the central region would suitably have an axial length of about 55% of the float element length.
- the bow region of the respective float element is bow-sided pointed and widens to a seen in plan view cylindrically executed body to which adjoins the central region.
- the central region is continued with the cylindrically executed body viewed in the direction of the rear area.
- the tail area initially continues the n cylindrical body seen in plan view, and then tapers to a point, so that an end tip is oriented towards the stern of the underwater hull.
- Targeting is also when the float elements seen with their respective central longitudinal axis in the transverse direction at a distance from each other, which corresponds to an amount of about 65% of the width of the underwater hull.
- the float elements are at least partially designed as a hollow body, so that, for example, drives and supplies, but also supply means for the crew and disposal options can be included in the respective float element.
- a drive can be received in each case, wherein both can be coupled together.
- the drive can be done by means of only one of the two drive units until the cruise, which of course also with Both Antriebsagregaten can be done.
- Both drives can each be designed with the smallest possible cubic capacity to meet the potential savings. Since only low speeds are permitted in inland waters, eg on rivers and canals, it is favorable that only one of the two drives is actively switched, wherein both drives can be operated alternately, which can be controlled manually or automatically.
- the float elements are thus advantageously designed so that a water flow guide to the drive screw is present, wherein the Was- Serströmungs horrillus pulpus pulpus pulpus pulpus pulpus pulpus pulpus pulpus pulpus pulpus pulpus pulpus pulpus pulpus pulpus pulpus pulpus pulpus pulpus pulpus pulpus pulpus pulpus pulpus pulpus pulpus pulpus pulpus pulpus pulpus pulpus pulpus pulpus pulpus pulpus pulpus pulpus pulpus pulp.
- the invention thus provides a watercraft which has a shallow depth with its underwater hull, wherein the float elements are spaced as far as possible from the central longitudinal axis but not maximally spaced therefrom and thus not directly at the side edges of the underwater hull to allow a Aufklimmung from the bottom plate to the side wall.
- the float elements end in front of the stern of the vessel, among others, for the reason that there is still enough space for the respective drive screw and the rudder system.
- the underwater hull is kept very flat with the invention, wherein in the rear area still a flow guide contour could be provided to the drive screws.
- the underwater hull as a flat bottom at the bow tip just above the waterline (starting point to the second turning point) in a large arc (bulbous) to the third inflection point, ie with the first immersion depth range to about the 0th 4 times (40%) of the total immersion depth is performed. From there to about the middle of the float element slimming in the rear area, ie in the second dive depth area, the underwater hull is guided in a very shallow S-bend to the total dive depth.
- the float elements advantageously have a multiple function. On the one hand, the float elements should fulfill a supporting function.
- the float elements have a water distribution function, so that only half an amount of the displaced water is displaced to the outside, wherein the other half is displaced in the direction of the central longitudinal axis of the underwater hull. This obviously reduces the wave formation to the outside.
- the float elements by slimming in the rear area but also ensure that the water flow velocity is reduced to the drive screws out each, so that the drive screws can provide more effective feed the necessary.
- the float elements in their dimensions with respect to the width and height, ie in the most advantageous width-height ratio with respect to the width of the drives or motors to be installed and in view of the desired total immersion depth of the vessel to be adjusted.
- the underwater hull is cut or constructed as a flat floor with the five points, the above-mentioned position of the points should be preferred.
- the line guidance is selected so that the underwater hull is guided by an amount of 50% in the middle third of the total length to the total immersion depth, the line being such that it is arranged as uniformly as possible below the center of gravity of the watercraft.
- the object of the invention is also the interaction of the float elements with the particularly targeted shaping together with the lines of the underwater hull.
- the cross section of the underwater hull on the main frame can be reduced by 20 to 40%, this cross-sectional amount with the third power (X 3 ) flows into the power calculation, so that there is a watercraft with the invention, which can be operated much more economical compared to known displacement water vehicles.
- watercraft can be equipped with the embodiments of the invention because of the low energy consumption particularly easy with electric motors or with battery-powered and / or solar-powered electric motors.
- FIG. 1 shows a longitudinal section of an underwater hull of a watercraft not shown in more detail
- Fig. 3 is a plan view of the underwater hull of Figure 1 with recognizable float elements
- Fig. 4 is a rear view of the underwater hull.
- Figures 1 and 2 show an underwater hull 1 of a watercraft, not shown.
- the underwater hull 1 extends from a bow 2 to a stern 3.
- the underwater hull 1 has two parallel aligned float elements 10, which extend from the bow area 11, the middle 12 of the underwater hull 1 seen in the axial direction thereof extending aft.
- the waterline is identified by the reference numeral 13 or WLR.
- WLR describes in the sense of the invention, the assumed waterline at rest during medium voyage of the ship.
- a first immersion depth region 5 extends from the bow 2 to a bulge depth of approximately 40% of the total immersion depth of the underwater hull 1.
- the total immersion depth is designated by reference numeral 14.
- the bottom plate or the flat bottom 4 extends from the bow portion 11 to the rear end 3.
- the bottom plate 4 seen in side view is curved, quasi executed in a flat S-arc, with several, preferably three inflection points P2 to P4 and thus several, preferably two immersion depth ranges 5 and 6 are provided.
- the immersion depth 14 of the main hull 1 is thus advantageously divided into two immersion depth regions 5 and 6, and is defined by the definition of five points P1 to P5 or inflection points P2 to P4, through which the contour of the main hull 1 is interpolated.
- five turning points P1 to P5 four distances A1 to A4 are defined in their axial length, which represent the construction length of the bottom plate 4, which is guided by the bow 2 just above the waterline 13 in multiple arcs to the maximum depth 14 of the skin rump 1.
- the location of the five points P1 to P5 is referred to by the distances A1 to A4 on the central axis of the ship and in the height to the waterline 13 of the resting ship.
- the route A1 extends from the starting point P1 to the point P2, the route A2 connecting from point P2 to point P3.
- the distance A3 following the route A2 extends from the point P3 to the point P4, followed by the route A4 ending at the point P5 or at the end point P5.
- WLR describes in the sense of the invention, the assumed waterline 13 at rest during medium voyage of the ship.
- the assumed waterline 13 in the resting state is determined by the total weight of the ship, which would have to be carried by the main hull 1 in flat bottom plate 4 only.
- approximately ⁇ ⁇ of the total immersion depth 14 of the main hull 1 should lie above the assumed waterline 13.
- An arranged between the starting point P1 and a third point P3 or inflection point P3 second point P2 or inflection point P2 is a in height variable auxiliary point.
- On the longitudinal axis of this P2 is about 9% of the construction length of the bottom plate 4 behind (so seen in the direction of the rear 3) the starting point P1.
- the third inflection point P3 is an essential construction point, which lies in its longitudinal distance 1/6 of the construction length of the bottom plate 4 behind the starting point P1.
- the height or depth is preferably about 40% of the total immersion depth 14 of the main hull 1.
- a fourth point P4 or inflection point P4 is the construction point which is% before the end of the design length of the bottom plate 4 on the main axis. It lies in its height at the depth of the diving depth of the main hull 1 determined as described above.
- the second diving depth or the second diving depth area 6 is described in the third distance A3.
- the contour of the bottom plate 4 forms in the interpolation from the third point P3 a right arc that soon changes into a left arc to get to the fourth point P4. Due to the slight change in the altitude of the starting point P1 and the second point P2 or inflection point P2 of naturally occurring inflection point 7 is set by the right arc in a left arc within the third distance A3 so that the naturally occurring inflection point 7 is located in front of the center of gravity of the hull. This is the only way that the resulting hydrodynamic effect can lift the bow area 11 out of the water with increasing speed of the watercraft in order to reduce the wetted surface of the main hull 1 with increasing speed.
- An end point P5 is at the same height as the fourth point P4 or inflection point P4 at the end of the bottom plate 4.
- the float elements extend parallel to the longitudinal central axis of the vessel or of the underwater vessel.
- two float elements are provided, which are equally spaced on both sides of the central longitudinal axis to this and identical executed.
- the float elements 10 have a bow region 21, a middle region 22 and a tail region 23. Overall, the float elements 10 have a length, which corresponds to 70% of the total length of the underwater hull 1.
- the bow portion 21 has an axial length amount of about 20% of the float element length, the rear portion 23 having a length amount of about 25% of the float element length.
- the rear region 23 is therefore designed with respect to the total swimmer length with a greater length than the bow region 21.
- the central region 22 would have expediently Axialnostin amount of about 55% of the float element length.
- the bow portion 21 of the respective float element 10 is bow-sided pointed and extends to a seen in plan view cylindrically executed body 24 at which the central region 22 is connected.
- the middle region 22 is continued with the cylindrically executed body 24 in the direction of the rear region 23.
- the rear region 23 initially continues the cylindrical body 24 seen in plan view, and then tapers to a point, so that an end tip 25 is oriented towards the stern of the underwater hull 1.
- the float elements 10 have with their respective central longitudinal axis X seen in the transverse direction at a distance 26 to each other, which corresponds to an amount of about 65% of the width 27 of the underwater hull 1.
- the float elements 10 are exemplified so that a water flow guide to the drive screw is present, wherein the Was- Serströmungs horrillus pulposus below the underwater hull 1 and between the float elements 10 by the slimming in the rear portion 23 of the float element is advantageously reduced.
- the float elements 10 are spaced as far as possible to the central longitudinal axis X but not maximally spaced from this and thus are not arranged directly on the side edges 28 of the underwater hull 1.
Landscapes
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- Ocean & Marine Engineering (AREA)
- Other Liquid Machine Or Engine Such As Wave Power Use (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE202012006183U DE202012006183U1 (de) | 2012-06-27 | 2012-06-27 | Unterwasserrumpf eines Wasserfahrzeuges |
| PCT/DE2013/000323 WO2014000723A1 (de) | 2012-06-27 | 2013-06-17 | Unterwasserrumpf eines wasserfahrzeuges |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EP2867111A1 true EP2867111A1 (de) | 2015-05-06 |
| EP2867111B1 EP2867111B1 (de) | 2017-03-29 |
Family
ID=46671752
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP13741659.0A Not-in-force EP2867111B1 (de) | 2012-06-27 | 2013-06-17 | Unterwasserrumpf eines wasserfahrzeuges |
Country Status (3)
| Country | Link |
|---|---|
| EP (1) | EP2867111B1 (de) |
| DE (2) | DE202012006183U1 (de) |
| WO (1) | WO2014000723A1 (de) |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5265554A (en) * | 1992-06-23 | 1993-11-30 | Meredith Marine, Inc. | Boat construction |
| US7578250B2 (en) * | 2005-01-03 | 2009-08-25 | Baker Elbert H | Watercraft with wave deflecting hull |
| FR2890040B1 (fr) * | 2005-08-26 | 2007-10-05 | Dcn Sa | Coque de navire comportant au moins un flotteur |
| GB2481581B (en) * | 2010-06-28 | 2016-07-13 | Pet Mate Ltd | Boat hulls |
-
2012
- 2012-06-27 DE DE202012006183U patent/DE202012006183U1/de not_active Expired - Lifetime
-
2013
- 2013-06-17 EP EP13741659.0A patent/EP2867111B1/de not_active Not-in-force
- 2013-06-17 DE DE112013003460.3T patent/DE112013003460A5/de not_active Withdrawn
- 2013-06-17 WO PCT/DE2013/000323 patent/WO2014000723A1/de not_active Ceased
Non-Patent Citations (1)
| Title |
|---|
| See references of WO2014000723A1 * |
Also Published As
| Publication number | Publication date |
|---|---|
| WO2014000723A1 (de) | 2014-01-03 |
| DE112013003460A5 (de) | 2015-03-26 |
| DE202012006183U1 (de) | 2012-07-16 |
| EP2867111B1 (de) | 2017-03-29 |
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