EP4051576A1 - Wing rig - Google Patents
Wing rigInfo
- Publication number
- EP4051576A1 EP4051576A1 EP20800112.3A EP20800112A EP4051576A1 EP 4051576 A1 EP4051576 A1 EP 4051576A1 EP 20800112 A EP20800112 A EP 20800112A EP 4051576 A1 EP4051576 A1 EP 4051576A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- front tube
- stiffening element
- tree
- wing rig
- wing
- 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.)
- Pending
Links
Classifications
-
- 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
- B63H8/10—Kite-sails; Kite-wings; Control thereof; Safety means therefor
Definitions
- the invention relates to a hand-supported wing rig for sports driven by wind power, for example foil surfing, according to the preamble of claim 1.
- Wing rigs are described, for example, under the names "Slingwing”, “Foil Wing”, “Wing Surfer” on the Internet.
- This is a wing that is designed in the manner of a kite with a front tube forming a leading edge and a single strut, which are preferably inflatable.
- a rigid wing rig in which the leading edge and a tree are formed by a complex tubular construction that spans a canvas (canopy).
- the leading edge is curved in an arc when viewed from above.
- the tree is supported on the leading edge by a multitude of struts.
- These struts are designed in such a way that they are the leading edge in a front view, i. That is, viewed in the direction of flow towards the wing rig - give a concave structure in which the end sections (tips) of the wing rig are raised from a central apex of the leading edge.
- a disadvantage of this solution is that, due to the complex structure of the tree and the leading edge, the total weight of the wing rig is very high, so that it can only be used in water sports with appropriate buoyancy devices. Another disadvantage is that the erection and dismantling of the wing rig takes a long time due to the complex pipe structure. The hard tubular structure of the Leading Edge and the tree also pose a significant risk of injury to the user in the event of a skidding fall.
- the flow profile is relatively soft and is sufficient in unfavorable conditions, for example in gusty winds or strong waves, so that an optimal flow is not guaranteed.
- the invention is based on the object of creating a hand-supported wing rig which maintains an aerodynamic profile with a simple structure.
- the hand-supported wing rig according to the invention is designed for wind-powered sports and has an inflatable front tube from which a tree extends, so that a support structure is formed which spans a canopy.
- a stiffening element is provided by means of which the inflatable front tube is preferably stiffened or supported in its longitudinal direction. This stiffening element can in turn be supported on the tree and attack the front tube. The stiffening element can also be braced with the front tube.
- This stiffening element stabilizes the profile of the wing rig even under unfavorable conditions, so that it is possible, for example, to design at least the front tube with a smaller cross-section than in conventional solutions, so that the flow resistance is reduced with optimal profile rigidity.
- the stiffening element is attached to the front tube in an exchangeable manner. In principle, however, it is also possible to integrate the stiffening element into the front tube.
- the stiffening element is designed as a stiffening rod that is braced to the front tube.
- the stiffening element can, for example, be inserted in sections into pockets or holders of the front tube. These pockets can be designed, for example, in the manner of a batten pocket. In principle, however, it is also possible to fix only the end sections and / or possibly also the middle sections of the stiffening element by means of suitable holders.
- the stiffening element can be designed as a slat or also as a profile body. In a variant, the stiffening element is approximately T-shaped, so that it also stiffen the tree.
- the wing rig is designed with an inflatable center strut.
- the invention can also be used in solutions with a rigid, preferably tubular tree.
- the profile body is designed to be inflatable.
- the tree which is also inflatable
- the tree can be attached to this profile body, which in turn is attached to the front tube in the middle area diametrically to the leading edge.
- the inflatable profile body supports the front tube on the side to which the tree is attached. It is preferred if this profile body is tapered towards its end sections.
- the front tube, the tree (center strut) and the profile body can be filled using a one-pump system or individual valves.
- the stiffening can be improved if several stiffening elements are attached to the front tube and / or the center strut.
- the stiffening element can for example be made of a sandwich material, a profile body or a fiber-reinforced plastic.
- the stiffening element engages the front tube with its end sections and is supported in the middle of the tree, so that a kind of tree and stiffening element Cross structure is trained.
- the stiffening element can consist of two struts that are each supported on the tree.
- the stiffening element can be made slightly V-shaped.
- the rigid tree is supported on the canopy side on the front tube. This means that when the wing rig is positioned horizontally, the tree attacks the front tube offset upwards towards the canopy.
- the wing rig is then preferably designed with a comparatively large handle in the manner of a boom spar, which engages the front tube approximately diametrically to the tree and whose trailing edge end section is then supported on the actual tree. This handle can be curved in an arc shape in order to improve holding comfort.
- the length of the handle can be adjustable to change the wing profile.
- FIG. 1 shows a basic illustration of the use of a wing rig which is used to drive a foil board
- FIG. 2 shows a three-dimensional side view of a wing rig according to FIG. 1;
- Figure 3 is a schematic plan view of a support structure of the wing rig according to Figures 1 and 2;
- FIG. 4 shows an exemplary embodiment in which a stiffening element is designed to be inflatable
- Figure 5 shows an embodiment with a rigid support structure in a three-dimensional view from below and FIG. 6 shows the exemplary embodiment according to FIG. 5 from above with the canopy shown transparently.
- FIG. 1 the use of a wing rig 1 according to the invention for driving a foil board 2 is shown.
- a surfer 4 only holds the wing rig 1 with the flanks and sets it in relation to the wind depending on the desired direction of travel (close wind, half wind, downwind) or the buoyancy to be set, for example when jumping or when adjusting the ride height (immersion depth of the foil) and depending on the wind strength and the swell.
- the wing rig 1 has an inflatable front tube 6 which forms a leading edge 7 and is approximately arch-shaped in a plan view and extends with tips 8, 10 up to a trailing edge 12 of a canopy 14 of the wing rig 1. This is spanned on the one hand by the front tube 6 and on the other hand by an inflatable center line 16, which together form a support structure of the wing rig 1.
- the surfer holds the wing rig 1 only on the center strand 16, which bulges downward in the view according to FIG. 1 and according to FIG.
- the front tube 6 is approximately V- or U-shaped, both in plan view and in a front view - seen in the direction of flow V / U in the front view upwards, ie extended away from the surfer.
- the trailing edge 12 and thus the entire canopy surface 14 is also positioned in a V-shape in the front view or in a rear view.
- FIG. 2 shows a three-dimensional side view of the wing rig 1. It can be seen that the wing rig 1 is approximately U-shaped in a plan view according to FIG. 3 described below and tapers away from an apex 18 towards the two tips 8, 10.
- the center strand 16 is connected in the area of the apex 18, reinforcements (not shown) being provided in the connection area in order to optimize the introduction of force between the center strand 16 and the leading edge (front tube) 6.
- the center strand 16 is designed to vary in diameter, so that two recessed grips 20, 22 are formed, in the area of which the diameter d of the center strand 16 is smaller than the diameter D of the adjacent strut sections. As can be seen in FIG.
- these recessed grips 20, 22 are preferably not formed along the entire circumference, but rather only in the area of the center strand 16 facing away from the canopy 14.
- a peripheral surface area 24 on the canopy side is continuously formed without a step.
- the term “diameter” is to be understood as the extent of the center strand 16 in the view according to FIG. 2.
- a round cross-section is not required, but a different cross-section, for example an oval or rounded, approximately trapezoidal cross-section, can also be used.
- the recessed grip 20 on the leading edge side in FIG. 2 has a shorter length I than the recessed grip 22 on the trailing edge, which is designed with a length L that is at least 1.5 times, preferably more than 2 times the length I of the front recessed grip 20 is.
- the greater length L gives the surfer 4 the opportunity to adjust the rear hand position on the trailing edge side very quickly in accordance with the setting of the wing rig 1, so that the implementation of the maneuvers described above is facilitated.
- the two recessed grips 20, 22 in the illustrated embodiment are stretched over by a holding web 26, which is fastened to the circumferential area 28 located at the bottom in FIG. 2 and removed from the canopy 14.
- a holding web 26 extends over both recessed grips 20, 22.
- the holding web 26 is fixed to strut sections 32, 34, 36 laterally adjoining the recessed grips 20, 22.
- This attachment can be detachable, for example via pockets or the like are designed in the manner of a lath pocket and enable a rigid connection of the retaining web 26. This is particularly advantageous since a torque can then also be applied via the retaining web 26 connected to the center strand 16 in a torsionally and flexurally rigid manner for the transverse adjustment of the wing rig 1 - as mentioned above, this is not possible with the conventional retaining loops.
- the holding web 26 can be made from a comparatively rigid molded part. In principle, it is also possible, in order to improve grip comfort, to surround a comparatively flexurally and torsionally rigid core with a comparatively soft shell that is optimized for grip. In a concept in which the holding web 26 or the holding webs 26 are held exchangeably on the center strut 16, this flexural rigidity and the possibility of torque transmission can be adapted by exchanging the holding webs 26. For example, it can be advantageous for beginners to make the holding webs 26 somewhat softer so that unintentional hand movements are not transmitted directly to the wing rig 1. Experienced surfers will then prefer stiff retaining webs 26 due to the direct power transmission. The stiffness of the center strand 16 is also increased by the holding web 26.
- the recessed grips 20, 22 are formed approximately trapezoidal in the side view visible there.
- the recessed grips 20, 22 are laterally bounded by two inclined surfaces 38, 40 (only provided with reference numerals in the case of the recessed grip 20), via which the actual diameter reduction takes place and which then merge into a web 42, which according to the illustration in FIG the diameter d is executed.
- the cross section in the area of this web 42 is then correspondingly ovalized, the width (perpendicular to the plane of the drawing) being greater in the area of the circumferential surface area 24 than in the sections facing the holding webs 26.
- the tapering of the center strand 16 in the area of the recessed grip 20, 22 is therefore asymmetrical.
- the end section 48 of the center strand 16 adjoining the recessed grip 22 is tapered towards the trailing edge 12.
- FIG. 2 and 3 a further special feature of an embodiment of a wing rig 1 according to the invention is shown. Accordingly, the front tube 6 is designed to improve the flexural / torsional rigidity with a stiffening element 44, the function of which is explained with reference to FIG.
- FIG. 3 This shows a top view of a support structure 46 which is formed by the leading edge (front tube 6) and the center strand 16 connected to it and which spans the canopy 14 of the wing rig 1, indicated by dashed lines.
- the lateral areas of the two recessed grips 20, 22 are shown.
- the stiffening element 44 described below can, however, also be used in wing rigs 1 in which a tree made from a tubular profile according to DE 102019 101 656 A1 or a continuous central branch 16 without recessed grips 20, 22 is used.
- the approximately U-shaped curvature of the front tube 6 is shown in plan view, the center strand 16 being attached to the apex 18 of the front tube 6.
- the stiffening element 44 extends in the middle in sections approximately along the longitudinal axis of the front tube 6.
- the stiffening element 44 can be a stiffening rod which is designed in the manner of a batten. This can for example be made of a sandwich material, carbon fiber, an aluminum profile or the like.
- this stiffening element 44 is integrated into the outer skin of the front tube 6.
- pockets or holders can also be made on this, via which the stiffening element 44 is attached to the front tube 6 in an exchangeable manner.
- stiffening elements 44 with different stiffnesses can be made available to allow adaptation to different wind and wave conditions.
- the stiffening element 44 extends approximately transversely to the center strut 16.
- the fastening is carried out in such a way that when the support structure 46 is inflated, for example via a valve arranged on the front tube 6 and a one-pump system, the stiffening element 44 with the Support structure 46 is braced, so that undesired twisting of the support structure 46 at high loads can be prevented or at least reduced.
- the stiffening element 44 can also be designed in accordance with the desired V / U inclination of the front tube 6. In this way, a stable wing profile is provided, which guarantees an optimal flow even under different operating conditions.
- the stiffening element 44 can for its part be profiled so that, for example, a central area 50 is designed with greater flexural / torsional rigidity than end areas 52a, 52b. In principle, it is also possible to make the stiffening element 44 itself approximately T-shaped, so that it also extends in sections along the center strand 16 and thus stiffen it - at least in the connection area.
- the support structure 46 is formed with a plurality of such stiffening elements 44, it being possible, for example, to provide separate stiffening elements for profiling the front tube 6 in the area of the tips 8, 10.
- the stiffening elements 44 can - as shown in Figures 2 and 3 - be formed in the connection area of the central strand 16 above (view according to Figure 2, 3) or also below.
- the stiffening elements 44 can, as stated above, be curved or profiled in accordance with the desired U-shape of the front tube 6.
- the inventive use of such stiffening elements 44 in the support structure 46 enables the latter to be designed with a somewhat smaller cross-section, so that despite the smaller diameter, the predetermined profile of the wing rig 1 is maintained with minimal weight even in gusty conditions or in strong waves and even during complex maneuvers.
- the narrow profile reduces the flow resistance of the wing rig 1 compared to conventional solutions, so that the driving characteristics are superior to conventional solutions with minimized weight.
- stiffening elements 44 it is preferred to hold the stiffening elements 44 interchangeably on the support structure 46, so that the wing rig 1 can be folded up compactly after the air has been deflated and the stiffening elements 44 have been removed.
- This interchangeability also opens up the possibility of designing the profile of the support structure 46 to be stiffer or softer by omitting or varying the stiffening elements 44.
- stiffening element 44 is not designed as a rigid profile, but as an inflatable structure in the manner of the center strut 16 or the front tube 6.
- the cross-section of the stiffening element 44 is, for example, tubular with a sealing bladder and a robust outer skin.
- This stiffening element 44 is formed on the side facing away from the leading edge 7 (rear side) of the front tube 6 in its central area and accordingly supports the profile of the front tube 6 very effectively.
- the stiffening element 44 extends approximately parallel to the front tube 6.
- the stiffening element 44 is connected to the front tube 6 along a contact surface that is narrow in the circumferential direction. This can be done, for example, by sewing, gluing and / or welding.
- the inflatable stiffening element 44 can also be integrated into the front tube 6 as an additional chamber.
- the inflatable stiffening element 44 is set in a slightly V-shape, similar to the front tube 6 (view according to FIG. 4), so that an apex 54 of the stiffening element 44 is arranged parallel to the apex 18.
- the end sections 56, 58 of the stiffening element 44 remote from the central strand 16 are tapered so that the support of the front tube 6 is maximal in the central area.
- the center strand 16 is attached to the stiffening element 44 in the apex area 54.
- the center strand 16 has a single recessed grip 20, which is formed by the center strand 16 being angled.
- the center strand 16 has a comparatively short strut leg 60 which is supported on the stiffening element 44 and which is positioned at an angle ⁇ to the longitudinal axis of the center strand 16 pointing upwards towards the canopy 14.
- This strut leg 60 is followed by a further, longer strut leg 62, which forms a V-structure with the strut leg 60 and which is set at an angle ⁇ to the central strut longitudinal axis.
- the angle ⁇ is smaller than the angle ⁇ .
- the strut leg 60 then merges via a conical transition area 64 of the center strut 16 into the previously described end area 52, which tapers towards the trailing edge 12.
- the front tube 6 and the stiffening element 44 are each filled via a valve 66, 68, as is used, for example, in kites. Such a valve is described in WO 2016/059 179 A1 by the applicant.
- the center strand 16 is filled via a valve 70 designed as a non-return valve - of course, a valve such as that used for filling the front tube 6 and the stiffening element 44 can also be used here.
- the three inflatable elements front tube 6, stiffening element 44 and center strut 16
- a window is provided with the reference numeral 72, through which the view of the user is improved.
- the user guides the wing rig 1 by means of a handle, which in the illustrated embodiment is designed as a retaining web 26, which holds the legs 60, 62 and the adjacent butted transition area 64 formed, in cross-section approximately trapezoidal recessed grip 20 overstretched.
- This holding web 26 can be fastened on the one hand to the tapering end region 52 and on the other hand to the stiffening element 44 and / or to the front tube 6.
- This attachment can be made interchangeably, so that the holding web 26 can be easily removed or exchanged for another variant with a higher or lower rigidity or a different geometry.
- the center strut 16 is designed to be inflatable.
- An exemplary embodiment is explained with reference to FIGS. 5 and 6 in which, instead of the central branch 16, a rigid tree is used, which is formed from a tubular profile 74, for example.
- this tubular profile 74 is fastened on the one hand in the area of the apex on the canopy side, ie on the upper side of the front tube 6 facing away from the viewer in FIG. 5, and extends with its distal end section towards the trailing edge 12 of the wing rig 1.
- the canopy 14 is arched in relation to the pipe profile 74 forming the tree, the flow profile in the region of this tree being stabilized by a zigzag-shaped profile support 76 which extends between the pipe profile 74 and the canopy 14.
- This profile support 76 can be formed, for example, by a line which is guided in a zigzag shape and the tension of which may be variable, so that the profile can be adjusted by lengthening or shortening the line.
- a rigid profile support 76 by means of profile bodies or by means of a cloth or the like inserted into the space between the profile body 74 and the canopy 14 can also take place.
- the stiffening element 44 is formed from two stiffening profiles 78a, 78b, which are set in an approximately V-shape and are supported on the tubular profile 74 at a distance from the front tube 6. The end sections removed from this each act on the front tube 6 in order to stiffen it in its longitudinal direction and also in profile.
- This V-structure of the stiffening element 44 can be designed to open towards the trailing edge 12 both in the inflow direction and in the bottom view to the rear.
- a handle or retaining web 26 is provided, which is designed in the broadest sense in the manner of a boom spar and which is attached on the one hand in the area of the apex 18 to the front tube 6 and on the other hand approximately in the last third of the tubular profile 74 (tree).
- this holding web 26 is designed to be slightly curved downwards (view according to FIG. 5).
- the effective length of the holding web 26 can be changed telescopically via an adjusting device 80, so that the profile can be adjusted to be flatter or more bulky by shortening or lengthening the holding web 26.
- This adjustment device 80 connects a straight leg 82 with an inflow-side curved leg 84 of the holding web 26, which extend telescopically into one another and can be fixed in position by means of the adjustment device 80.
- a push-pin system can also be used to fix this position.
- the tubular profile 74 can also be designed as a telescopic profile, so that the length of the tree can be changed.
- the curved configuration of the leg 84 makes it easier to guide the wing rig 1 during a turn or a jibe or when holding the wing rig 1 in the wind (without significant propulsion).
- FIG. 6 shows a top view of the wing rig 1 according to FIG. 5, the canopy 14 being shown as transparent.
- the telescopic tubular profile 74 can be seen, which engages the front tube 6 in an area remote from the leading edge 7 and extends to the trailing edge 12.
- the canopy 14 bulges upwards in the illustration according to FIG. 6, the profile being stabilized via the profile support 76.
- the shape stabilization of the front tube 6 takes place via the stiffening element 44, which, as described above, is formed by the two V-shaped stiffening profiles 78a, 78b, which act on the one hand on the tubular profile 74 and on the other hand on the front tube 6, so that the wing rig 1 through the cross-shaped structure consisting of the stiffening element 44 and the tree (tubular profile 74) is stiffened.
- the curved retaining web 26 runs below the canopy 14 and is covered in sections by the front tube 6 in the illustration according to FIG.
- the curved leg 84 engages the underside (view according to FIG. 6) of the front tube 6, while the straight leg 82 is supported on the tubular profile 74.
- the wing rig 1 can be adjusted to a relatively large extent by adjusting the length of the profile body 74 and / or the retaining web 26 and / or the profile support 76, whereby a reliable stabilization of the wing rig profile is ensured in each case.
- mixed forms can also be implemented in which, for example, an inflatable center strand 16 is supported on the front tube 6 via a stiffening element 44 arranged in a cross-shaped manner relative to it, for example with the two stiffening profiles 78a, 78b. It is also conceivable to additionally stabilize the tubular structure according to FIGS. 5 and 6 via an inflatable stiffening element 44 according to FIG.
- a hand-supported wing rig for wind-powered sports is disclosed, in which a stiffening element is provided to stiffen the front tube.
Abstract
Description
Claims
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102019129496 | 2019-10-31 | ||
DE102020122143.6A DE102020122143A1 (en) | 2019-10-31 | 2020-08-25 | Wing rig |
PCT/EP2020/080453 WO2021084036A1 (en) | 2019-10-31 | 2020-10-29 | Wing rig |
Publications (1)
Publication Number | Publication Date |
---|---|
EP4051576A1 true EP4051576A1 (en) | 2022-09-07 |
Family
ID=75485752
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP20800112.3A Pending EP4051576A1 (en) | 2019-10-31 | 2020-10-29 | Wing rig |
Country Status (4)
Country | Link |
---|---|
US (1) | US20220371710A1 (en) |
EP (1) | EP4051576A1 (en) |
DE (1) | DE102020122143A1 (en) |
WO (1) | WO2021084036A1 (en) |
Families Citing this family (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP4323272A1 (en) | 2021-04-15 | 2024-02-21 | Boards & More GmbH | Wing foil and kite |
DE102021125438A1 (en) | 2021-04-15 | 2022-10-20 | Boards & More Gmbh | wing rig |
DE102021214265A1 (en) * | 2021-12-13 | 2023-06-15 | Boards & More Gmbh | wing |
DE202021106855U1 (en) * | 2021-12-16 | 2022-08-01 | North Kiteboarding Australasia | Wings with an at least partially inflatable supporting structure for sports with wind-powered locomotion |
WO2023195035A1 (en) * | 2022-04-06 | 2023-10-12 | Zm Design S.R.L. | Inflatable wing sail with aero-optimised leading edge |
Family Cites Families (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2501618B1 (en) | 1981-03-11 | 1985-10-04 | Le Bail Roland | VEIL WITH PROPELLANT AND VARIABLE LIFT EFFECT |
WO1984003868A1 (en) * | 1983-03-28 | 1984-10-11 | Robert Farrugia | Method for rigidifying and forming inflatable structures |
GB8706134D0 (en) * | 1987-03-16 | 1987-04-23 | Jacobson B J | Inflatable aerodynamic wing structure |
US5448961A (en) | 1992-07-13 | 1995-09-12 | Ansteensen; Erik | User supported portable sail |
FI933666A0 (en) | 1993-08-20 | 1993-08-20 | Skywings Ab Oy | DRAKSEGEL |
FR2841213B1 (en) * | 2002-06-19 | 2004-09-10 | Michel Andre Leon Bousquet | WIND CONTROL DEVICE FOR ELLIPTIC TRACTION WINGS |
DE102015105719A1 (en) | 2014-10-15 | 2016-04-21 | Boards & More Gmbh | Valve, inflatable sports equipment with a valve and pump |
DE102019101656A1 (en) | 2019-01-23 | 2020-07-23 | Boards & More Gmbh | Wing rig |
-
2020
- 2020-08-25 DE DE102020122143.6A patent/DE102020122143A1/en active Pending
- 2020-10-29 US US17/772,949 patent/US20220371710A1/en active Pending
- 2020-10-29 WO PCT/EP2020/080453 patent/WO2021084036A1/en unknown
- 2020-10-29 EP EP20800112.3A patent/EP4051576A1/en active Pending
Also Published As
Publication number | Publication date |
---|---|
DE102020122143A1 (en) | 2021-05-06 |
US20220371710A1 (en) | 2022-11-24 |
WO2021084036A1 (en) | 2021-05-06 |
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