EP4023546B1 - Wing rig - Google Patents
Wing rig Download PDFInfo
- Publication number
- EP4023546B1 EP4023546B1 EP21216061.8A EP21216061A EP4023546B1 EP 4023546 B1 EP4023546 B1 EP 4023546B1 EP 21216061 A EP21216061 A EP 21216061A EP 4023546 B1 EP4023546 B1 EP 4023546B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- wing rig
- winglets
- wing
- front tube
- strut
- 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.)
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- 241000545744 Hirudinea Species 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
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Images
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
- B63H8/12—Kites with inflatable closed compartments
Definitions
- the invention relates to a hand-supported wing rig for wind-powered sports, for example foil surfing, according to the preamble of patent claim 1.
- Wing rigs are offered under the names “Slingwing”, “Foil Wing”, “Wing Surfer”, for example.
- This is a wing that is designed with a front tube that forms a leading edge and a strut, which are preferably inflatable.
- the central strut and the front tube each have holding loops that the user uses to hold the inflatable wing rig during use, for example when foiling, ice skating or skiing.
- a rigid wing rig in which the leading edge and a boom are formed by a complex tube construction that spans a canvas (canopy).
- the leading edge is curved in a plan view.
- the boom is supported by a large number of struts on the leading edge. These struts are designed in such a way that they give the leading edge a concave structure in a front view, i.e. in the direction of flow of the wing rig, in which the end sections (tips) of the wing rig are flared upwards from a central vertex of the leading edge.
- a disadvantage of this solution is that the complex structure of the boom and the leading edge means that the total weight of the wing rig is very high, so that use in water sports is only possible with appropriate buoyancy bodies.
- Another disadvantage is that setting up and dismantling the wing rig takes a lot of time due to the complex tube structure.
- the hard tube structure of the leading edge and the boom also means that the user is at considerable risk of injury in the event of a slingshot fall.
- a similar rigid wing rig is in the WO95/05973 A1 shown.
- the leading edge and the boom are also formed by a complex tube structure.
- the structure shows the same disadvantages as the wing rig according to the above-discussed US$4,563,969 .
- the wing rig is designed with an inflatable strut with holding loops.
- These concepts are characterized by low weight and comparatively high buoyancy.
- these wing rigs are usually guided by hand, whereby the position of the wing rig in relation to the wind must always be changed depending on the wind strength and direction as well as the planned maneuver.
- the grip position especially of the rear hand on the trailing edge side, can change.
- the holding straps usually provided make it difficult to change the holding position in this way.
- WO 2020/152198 A1 An improved wing rig is described, in which an inflatable front tube extends along a leading edge of the wing rig.
- a rigid boom is used as a central strut, which makes handling much easier, since this boom can be gripped according to the surfer's preference and does not have to be tied to the usual
- the front tube is made up of several tube segments, the angle of attack of which increases from the middle of the wing rig to the respective tips of the front tube.
- the front tube is U-shaped in the broadest sense and extends to the trailing edge of the canopy.
- the front tube is relatively stiff in the vertical direction (viewed across the large surface of the canopy), so that handling the wing rig can be problematic in unfavorable conditions.
- the object of the invention is to create a hand-supported wing rig with improved handling.
- the hand-supported wing rig has an inflatable front tube, from which a strut extends approximately in the middle, for example in the form of a rigid boom and/or an inflatable center strut, by which the wing rig is usually held.
- the front tube together with the strut, spans a canopy, with this strut extending approximately in the middle from the front tube to a trailing edge of the canopy.
- the hand-supported wing rig is designed with fixed and/or inflatable tip struts which extend at a distance from end sections of the front tube in the direction of the trailing edge of the canopy, with a side edge of the canopy extending between each end section of the tip strut and the associated tip of the front tube.
- the front tube does not extend along the leading edge and the two side sections of the wing rig, but essentially along the leading edge, with the side areas supported by the tip struts.
- the positioning of the tip struts is preferably such that they form an acute angle with the respective end sections (tips) of the front tube, i.e. with the areas of the front tube that extend beyond the tip struts.
- the side edge of the canopy is preferably positioned towards the trailing edge.
- the side edges are arranged approximately parallel to the flow direction of the wing rig.
- the stiffness in the lateral direction and the lower stiffness in the vertical direction can be further influenced if the tip strut, the end section of the front tube and the respective side edge together form a triangular structure. It may well be acceptable for the tip strut to be slightly rounded or angled.
- the stiffness in the lateral direction is optimal when the two tip struts are positioned at an acute angle to the middle strut (tree or center strut).
- the two tip struts are positioned approximately in a V-shape relative to each other.
- the inventive concept can be advantageously implemented with a wing rig with an inflatable center strut. Handles or at least a boom can be attached to this, so that the guidance of the wing rig is made easier.
- Handling is further improved if such a center strut is designed with at least one grip recess that is extended by a handle or tree.
- winglets are formed along the side edges, which preferably run parallel to the direction of flow of the wing rig, increasing the aspect ratio of the wing rig without increasing the span. This is particularly advantageous for smaller people and larger wing rigs, as it prevents the tips from touching the water when sailing close-hauled or during maneuvers.
- Such winglets reduce induced drag at high lift values, especially at low speeds, improving stability around the yaw axis. Due to the reduced moment of inertia around the longitudinal axis (roll axis), maneuverability is also improved.
- Such winglets can be formed, for example, by rigid molded parts or as inflatable bodies.
- the winglets are made of fiber-reinforced plastic, for example carbon fiber, wherein the winglets are attached to the wing rig or the wing rig structure via suitable connecting means.
- winglets are then preferably supported by the tip struts, which in turn can be inflatable or rigid.
- the winglets can extend upwards or downwards with respect to the water surface or on both sides, i.e. both upwards and downwards.
- the wing rig 1 is used to drive a foil board.
- the surfer holds the wing rig 1 with his hands and/or with the help of a trapeze and adjusts it with respect to the wind depending on the desired direction of travel (upwind, half wind, downwind) or the lift to be set, for example when jumping or adjusting the travel height.
- the wing rig 1 shown in a bottom view has an inflatable leading edge 2 which in the view according to Figure 1 is roughly arched. In the middle of this there is a center strut 4, which is also inflatable and can be filled with the front tube 2 via a common one-pump system 6.
- FIG. 1 Dashed lines indicate Figure 1 the tip structure of a conventional front tube 2 is shown. Accordingly, two tips 12 ⁇ , 14' forming the end sections of the front tube 2 (see dashed lines in Figure 1 ) are designed and angled in such a way that they extend from a leading edge 16 to the trailing edge 10 of the canopy 8, so that the latter is practically surrounded on three sides (front and side) by the front tube 2.
- Such a concept is very stiff in the vertical direction, so that twisting of the wing rig 1, similar to a windsurfing sail, is not possible.
- these tips 12, 14 integrated into the front tube 2 are significantly shortened and their geometry is also changed, so that the vertical stiffness is reduced to enable a twist, but the lateral stiffness is retained.
- the two tips 12, 14 of the approximately arched front tube 2 are shortened compared to the conventional design shown in dashed lines (see dashed reference lines 12, 14), so that they no longer extend to the trailing edge 10.
- a tip strut 18, 20 is provided, which is connected to the front tube 2 on the one hand and extends to the trailing edge 10. This longitudinal extension ends approximately in the area in which the conventional tips 12, 14 (see dashed lines) end.
- the tip struts 18, 20 can be rigid like a sail batten or inflatable.
- the two tip struts 18, 20 are arranged in the transition area from the actual front tube 2 to its slightly inclined tips 12, 14. These transition areas are in Figure 2 provided with the reference numerals 22, 24. In the embodiment shown, the two tips 12, 14 are each tapered.
- the tip struts 18, 20 are also connected to the one-pump system 6 and extend from the respective transition area 22, 24 to the outer end sections of the trailing edge 16. These end sections of the trailing edge 16 and the two tip struts 18, 20 are located approximately downstream (seen in the direction of flow) of the end sections of the two tips 12, 14 and thus end, as stated above, in the area in which the conventional tips 12', 14' connected to the front tube 2 end.
- a side edge 26, 28 of the canopy 8 extends between the ends of the tip struts 18, 20 and the upstream end sections of the tips 12, 14. This side edge 26, 28 also runs approximately parallel to the theoretical flow direction of the wing rig 1, which is marked with an arrow.
- the tips 12, 14 each form an acute angle ⁇ with the associated tip strut 18, 20.
- the front tube 2 with the tips 12, 14 formed on it is essentially only formed in the area of the leading edge 10, while the lateral sections of the wing rig 1 between the leading edge 16 and the trailing edge 10 are formed by the fabric of the canopy.
- the angle of attack ⁇ is chosen so that the lateral stiffness (see arrow in Figure 2 ) is at least equivalent to that of conventional solutions.
- the canopy 8 of the wing rig 1 has approximately the shape of a flattened pentagon or trapezoid, with the trailing edge 10 being cut concavely in the areas between the center strut 4 and the side struts 18, 20 to prevent fluttering.
- the side edges 26, 28 can also be cut slightly concavely.
- Figure 3 shows a top view of a wing rig 1 according to the invention. You can see the leading edge 16 formed by the front tube 2 and the two tips 12, 14, and the side edges 26, 28 that are laterally connected to it and extend to the trailing edge 10. In the top view you can only see the end sections of the center strut 4 and the two tip struts 18, 20, through which the canopy is spanned.
- the trailing edge 10 is tapered towards the end of the center strut 4 so that the overflow length L of the wing rig 1 is significantly larger in the middle area than in the area of the side edges 26, 28. As explained, the trailing edge sections 10a, 10b are cut concavely.
- Figure 4 shows a side view of the wing rig 1 according to the invention.
- the center strut 4 is attached to the front tube 2 in the middle area and in this embodiment extends to the trailing edge 10 of the canopy 8.
- a tip strut 18, 20 (the latter not visible) is connected, which also extends to the trailing edge 10, so that the canopy 8 is essentially connected by the front tube 2 on the one hand and the center strut 4 and the two tip struts 18, 20
- a side edge 26, 28 of the canopy 8 extends from the end sections of the tips 12, 14 to the end sections of the tip struts 18, 20, whereby in the illustration according to Figure 4 only the side edge 26 is visible.
- the side edges 26, 28 run approximately parallel to the theoretical flow direction and thus also approximately parallel to the plane of the drawing in Figure 4 .
- the wing rig 1 according to the invention is in the vertical direction (see arrow in Figure 4 ) is tuned to be relatively soft, so that it can twist in unfavourable conditions, such as gusty winds or strong impulses occurring during a manoeuvre, and thus the pressure is not transferred directly to the surfer.
- the diameter of the center strut 4 in the area between the front tube 2 and the right is reduced to a grip recess 32, which is extended, for example, by an indicated handle 34 or a boom, by which the surfer can grip the wing rig 1. Due to this grip recess 32, the handle 34 does not protrude radially or only slightly beyond the center strut 4, so that a very compact design with optimal rigidity is achieved. Details of this center strut concept can be found in the patent application mentioned at the beginning. EN 10 2020 122 145.2 explained by the applicant.
- a winglet 36, 38 is arranged along each of the side edges 26, 28, which in this embodiment extends upwards, i.e. in the position of use, pointing away from the water surface or away from the user.
- the height H of the winglets 36, 38 is minimal in the transition area to the tips 12, 14 of the front tube 2 and then rises in a flat curve (parabolic in the broadest sense) towards the trailing edge 10 and then reaches a maximum in the area of a rounded separation edge 40.
- the two winglets 36, 38 have a flow-optimized profile in the direction of flow, the profile width of which is tapered or widened towards the separation edge 40, 42, for example, so that the flow is optimized.
- the two tip struts 18, 20 are provided to support the winglets 36, 38.
- they are not inflatable but are made of a solid/rigid material, such as carbon fiber.
- the tip struts 18, 20 extend away from the front tube 2 towards the end section of the leading edge 16 and thus towards the separation edge 40, 42 of the respective winglet 36, 38, so that the side structures of the wing rig 1 are supported, but the previously described twist and flex is still guaranteed in the area of the tips 12, 14 in order to generate the desired flight behavior.
- the tip struts 18, 20 are designed so that the wing rig in the area of the tips in the vertical direction (up or down in Figure 5 ) can flex.
- the maximum height H of the winglets 36, 38 is substantially less than the length L of the side edges 26, 28 or winglets 36, 38.
- the winglets 36, 38 and/or the tip struts 18, 20 are detachably attached to the structure of the wing rig 1.
- the tip struts 18, 20 can be arranged in corresponding pockets like a sail batten and then supported on the upstream side on the leading edge 16 or the front tube 2 and on the downstream side on the trailing edge 10, wherein the tension can be adjustable via batten tensioners or the like, so that the flex of the winglets 36, 38 is adjustable.
- Figure 6 shows a view obliquely from below/behind the wing rig 1 according to Figure 5 .
- the two winglets 36, 38 are arranged along the side edges 26, 28 and extend approximately vertically upwards, i.e. away from the central center strut 4.
- the winglets 36, 38 are, as explained above, supported by the two tip struts 18, 20, which extend away from the front tube 2 towards the respective separation edge 40, 42 or the leading edge 10 of the canopy 8 and thus also support the winglets 36, 38 in the transverse direction.
- the central center strut 4 is formed with two strut sections 44, 46 angled to each other, which end in a blunt Angles are arranged approximately in a V shape to one another and thus form the recessed grip 32 indicated by dashed lines.
- two handles 34a, 34b are arranged in the illustrated embodiment, with the handle 34a being exchangeably attached to the strut section 44 and the other handle 34b being exchangeably attached to the strut section 46.
- Such handles are described in older applications of the applicant, so that further explanations are unnecessary.
- Figure 7 shows a plan view of the wing rig 1 according to the Figures 5 and 6 .
- the side edges 26, 28 extend approximately parallel to the flow direction indicated by the arrows, with the winglets 36, 38 attached to these side edges 26, 28.
- the thickness d of the winglets 36, 38 preferably increases from the front tube 2 towards the trailing edge 10 (in principle, the thickness d can also decrease towards the trailing edge 10), so that the flow is optimized.
- the profile of the winglets 36, 38 tapers towards the viewer (view from Figure 7 ), so that the areas of the winglets 36, 38 attached to the canopy 8 are wider than the upwardly projecting longitudinal surfaces of the winglets 36, 38.
- the tip struts 18, 20 are supported, in particular laterally, by the tip struts 18, 20 positioned at an angle to them, so that the previously described flex is ensured while the profile is otherwise sufficiently rigid.
- the winglets 36, 38 can be designed with support mounts (not shown) on which the tip struts 18, 20 engage or are supported.
- struts 18, 20 in addition to the described tip struts 18, 20, further struts or sail battens or the like can be provided for stiffening/supporting the winglets 36, 38.
- FIG 8 The wing rig 1 is in accordance with the Figures 5, 6 and 7 shown in the bottom view. From this view it is clear that the winglets 36, 38 extend upwards, ie away from the viewer, with their longitudinal axis approximately parallel to the Inflow direction (see arrow). As described above, the two tip struts 18, 20 are each supported at a distance from the associated tip 12 or 14 on the front tube 2 and extend into the area of the end sections of the trailing edge 10 or the separation edges 40, 42, so that reliable lateral support of the winglets 36, 38 is ensured.
- a continuous large handle or a tree can be attached to the center strut 4.
- the winglets 36, 38 extend upwards - into the Figures 9 and 10
- An embodiment is shown in which the winglets 36, 38 extend downwards, ie in the view according to Figure 9 extend towards the viewer.
- the two winglets 36, 38 are inflatable and attached to the front tube 2 in the area of the tips 12, 14.
- the winglets 36, 38 are designed, for example, as profile bodies which taper towards the trailing edge 10.
- the winglets 36, 38 are also tapered slightly from an area with a maximum diameter d towards the tips 12 and 14, respectively, although this taper is significantly smaller than the taper towards the trailing edge 10.
- the two inflatable winglets 36, 38 are set with their longitudinal axes at an obtuse angle to the end sections of the front tube 2, and the connection can be made, for example, via suitable plastic and/or fabric connectors (adapters) 48, 50.
- the two winglets 36, 38 are supported by the tip struts 18, 20.
- winglets 36, 38 are connected to the one-pump system 6 of the wing rig 1, so that the front tube 2, the indicated center strut 4 and the winglets 36, 38 can be inflated via a common valve.
- the two winglets 36, 38 are arranged approximately parallel to the center strut 4 and are each connected at a right or obtuse angle with respect to the front tube 2.
- hybrid solutions can also be used in which the winglets 36, 38 are formed from a partially rigid and inflatable structure.
- one of the connectors 48 can be seen quite clearly, by which the winglet 36 is connected to the tip 12 of the front tube 2.
- the winglet 36, 38 has its maximum height H in approximately the first third, which then decreases towards the trailing edge 10 or the front tube 2.
- This profiling in the height direction H and transversely to it (thickness d) is selected according to the size of the wing rig 1 and the intended area of use in order to optimize the airflow.
- the reference numerals 52, 54 indicate fixing areas by means of which the previously described handles 34a, 34b can be attached to the center strut 4.
- fixing areas 52, 54 can be, for example, adapter plates that are attached to the outer skin of the center strut 4.
- Several fixing areas 52, 54 can be arranged next to one another so that the position of the handles 34a, 34b can be changed.
- Such fixing areas 52, 54 for the handles 34 are also provided in the embodiments of the wing rig 1 described at the beginning.
- the inventive concept can be implemented both in conventional wing rigs 1 with an inflatable center strut 4 or a centrally arranged boom that replaces the inflatable center strut 4 or in hybrid solutions in which handles and/or comparatively short "trees", i.e. handles made of a rigid material such as aluminum, are arranged on an inflatable center strut.
- handles and/or comparatively short "trees" i.e. handles made of a rigid material such as aluminum
- a hand-supported wing rig for wind-powered sports with a front tube and fixed or inflatable tip struts arranged in tip areas, with side edges extending between the tips of the front tube and the end sections of the tip struts towards a trailing edge of a canopy.
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- Combustion & Propulsion (AREA)
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Description
Die Erfindung betrifft ein handgestütztes Flügelrigg für windkraftgetriebene Sportarten, beispielsweise Foilsurfen, gemäß dem Oberbegriff des Patentanspruchs 1.The invention relates to a hand-supported wing rig for wind-powered sports, for example foil surfing, according to the preamble of patent claim 1.
Flügelriggs werden beispielsweise unter dem Namen "Slingwing", "Foil Wing", "Wing Surfer" angeboten. Es handelt sich dabei um einen Flügel (Wing), der mit einer eine Leading-Edge ausbildenden Fronttube und einer Strut ausgeführt ist, die vorzugsweise aufblasbar (inflatable) sind. An der mittigen Strut und an der Fronttube sind jeweils Halteschlaufen ausgebildet, über die der Nutzer das inflatable Flügelrigg während der Nutzung, beispielsweise beim Foilen oder beim Eisskaten oder beim Skifahren hält.Wing rigs are offered under the names "Slingwing", "Foil Wing", "Wing Surfer", for example. This is a wing that is designed with a front tube that forms a leading edge and a strut, which are preferably inflatable. The central strut and the front tube each have holding loops that the user uses to hold the inflatable wing rig during use, for example when foiling, ice skating or skiing.
In der
Ein Nachteil dieser Lösung ist, dass durch den komplexen Aufbau des Baums und der Leading-Edge das Gesamtgewicht des Flügelriggs sehr hoch ist, so dass eine Nutzung beim Wassersport nur mit entsprechenden Auftriebskörpern möglich ist. Ein weiterer Nachteil besteht darin, dass der Auf- und Abbau des Flügelriggs aufgrund der komplexen Rohrstruktur viel Zeit in Anspruch nimmt. Die harte Rohrstruktur der Leading-Edge und des Baums bringt auch eine erhebliche Verletzungsgefahr des Nutzers bei einem Schleudersturz mit sich.A disadvantage of this solution is that the complex structure of the boom and the leading edge means that the total weight of the wing rig is very high, so that use in water sports is only possible with appropriate buoyancy bodies. Another disadvantage is that setting up and dismantling the wing rig takes a lot of time due to the complex tube structure. The hard tube structure of the leading edge and the boom also means that the user is at considerable risk of injury in the event of a slingshot fall.
Ein ähnliches starres Flügelrigg ist in der
In dem Dokument
Dementsprechend haben sich die eingangs genannten Lösungen durchgesetzt, bei denen das Flügelrigg mit einer inflatable Strut ausgeführt ist, an der Halteschlaufen zum Halten ausgeführt sind. Diese Konzepte zeichnen sich durch ein geringes Gewicht und einen vergleichsweise hohen Auftrieb aus.Accordingly, the solutions mentioned at the beginning have prevailed, in which the wing rig is designed with an inflatable strut with holding loops. These concepts are characterized by low weight and comparatively high buoyancy.
Wie erläutert, werden diese Flügelriggs üblicherweise von Hand geführt, wobei die Anstellung des Flügelriggs mit Bezug zum Wind stets in Abhängigkeit von der Windstärke und der Windrichtung sowie dem geplanten Manöver verändert werden muss. Je nach Anstellwinkel zur Wasseroberfläche und mit Bezug zur Hochachse des Nutzers kann sich dabei die Griffposition, insbesondere der hinteren, Trailing-Edgeseitigen Hand ändern. Die üblicherweise vorgesehenen Halteschlaufen erschweren jedoch eine derartige Änderung der Halteposition.As explained, these wing rigs are usually guided by hand, whereby the position of the wing rig in relation to the wind must always be changed depending on the wind strength and direction as well as the planned maneuver. Depending on the angle of attack to the water surface and in relation to the user's vertical axis, the grip position, especially of the rear hand on the trailing edge side, can change. However, the holding straps usually provided make it difficult to change the holding position in this way.
In der ebenfalls auf die Anmelderin zurückgehenden
In der nachveröffentlichten
Bei all diesen bekannten Lösungen ist die Fronttube im weitesten Sinn etwa U-förmig ausgebildet und erstreckt sich bis hin zur Trailing-Edge der Canopy. Bei der Nutzung zeigte es sich, dass ein derartiges Profil in Vertikalrichtung (gesehen auf die Großfläche der Canopy) relativ steif ist, sodass das Handling des Flügelriggs bei ungünstigen Bedingungen problematisch sein kann.In all of these known solutions, the front tube is U-shaped in the broadest sense and extends to the trailing edge of the canopy. In use, it was shown that such a profile is relatively stiff in the vertical direction (viewed across the large surface of the canopy), so that handling the wing rig can be problematic in unfavorable conditions.
Demgegenüber liegt der Erfindung die Aufgabe zugrunde, ein handgestütztes Flügelrigg mit verbessertem Handling zu schaffen.In contrast, the object of the invention is to create a hand-supported wing rig with improved handling.
Diese Aufgabe wird durch ein handgestütztes Flügelrigg mit den Merkmalen des Patentanspruchs 1 gelöst.This object is achieved by a hand-supported wing rig having the features of patent claim 1.
Vorteilhafte Weiterbildungen der Erfindung sind Gegenstand der Unteransprüche.Advantageous developments of the invention are the subject of the subclaims.
Das erfindungsgemäße handgestützte Flügelrigg hat eine inflatable Fronttube, von der sich etwa mittig eine beispielsweise als starrer Baum und/oder als inflatable Center-Strut ausgebildete Strebe erstreckt, über die das Flügelrigg üblicherweise gehalten wird. Die Fronttube spannt gemeinsam mit der Strebe eine Canopy auf, wobei sich diese Strebe etwa mittig von der Fronttube bis zu einer Trailing-Edge der Canopy erstreckt.The hand-supported wing rig according to the invention has an inflatable front tube, from which a strut extends approximately in the middle, for example in the form of a rigid boom and/or an inflatable center strut, by which the wing rig is usually held. The front tube, together with the strut, spans a canopy, with this strut extending approximately in the middle from the front tube to a trailing edge of the canopy.
Erfindungsgemäß ist das handgestützte Flügelrigg mit festen und/oder aufblasbaren Tip-Struts ausgeführt, die sich im Abstand von Endabschnitten der Fronttube weg in Richtung zur Trailing-Edge der Canopy erstrecken, wobei sich jeweils zwischen einem Endabschnitt der Tip-Strut und dem zugeordneten Tip der Fronttube eine Side-Edge der Canopy erstreckt.According to the invention, the hand-supported wing rig is designed with fixed and/or inflatable tip struts which extend at a distance from end sections of the front tube in the direction of the trailing edge of the canopy, with a side edge of the canopy extending between each end section of the tip strut and the associated tip of the front tube.
Mit anderen Worten gesagt, die Fronttube erstreckt sich nicht entlang der Leading-Edge und der beiden Seitenabschnitte des Flügelriggs, sondern im Prinzip im Wesentlichen entlang der Leading-Edge, wobei eine Abstützung der seitlichen Bereiche über die Tip-Struts erfolgt. Dadurch erhält das Flügelrigg in der Lateralrichtung eine vergleichsweise hohe Steifigkeit und eine damit einhergehende hohe Liekspannung (Leech Tension) und in der Vertikalrichtung eine vergleichsweise geringe Steifigkeit, die bei böigen Bedingungen oder Starkwind einen gewissen Twist, ähnlich wie bei Windsurfsegeln, erlaubt.In other words, the front tube does not extend along the leading edge and the two side sections of the wing rig, but essentially along the leading edge, with the side areas supported by the tip struts. This gives the wing rig a comparatively high stiffness in the lateral direction and a correspondingly high leech tension, and a comparatively low stiffness in the vertical direction, which allows a certain twist in gusty conditions or strong winds, similar to windsurfing sails.
Die Positionierung der Tip-Struts erfolgt vorzugsweise derart, dass sie mit den jeweiligen Endabschnitten (Tips) der Fronttube, das heißt, mit den sich über die Tip-Struts hinaus erstreckenden Bereichen der Fronttube einen spitzen Winkel einschließen.The positioning of the tip struts is preferably such that they form an acute angle with the respective end sections (tips) of the front tube, i.e. with the areas of the front tube that extend beyond the tip struts.
Bei einer besonders bevorzugten Lösung ist die Side-Edge der Canopy vorzugsweise zur Trailing-Edge angestellt.In a particularly preferred solution, the side edge of the canopy is preferably positioned towards the trailing edge.
Besonders bevorzugt sind die Side-Edges etwa parallel zur Anströmrichtung des Flügelriggs angeordnet.Particularly preferably, the side edges are arranged approximately parallel to the flow direction of the wing rig.
Die Steifigkeit in Lateralrichtung und die geringere Steifigkeit in Vertikalrichtung lässt sich weiter beeinflussen, wenn die Tip-Strut, der Endabschnitt der Fronttube und die jeweilige Side-Edge gemeinsam etwa eine Dreiecksstruktur begrenzen. Dabei kann es durchaus zulässig sein, dass die Tip-Strut leicht verrundet oder in sich angewinkelt sind.The stiffness in the lateral direction and the lower stiffness in the vertical direction can be further influenced if the tip strut, the end section of the front tube and the respective side edge together form a triangular structure. It may well be acceptable for the tip strut to be slightly rounded or angled.
Die Steifigkeit in Lateralrichtung ist optimal, wenn die beiden Tip-Struts spitzwinklig zur mittleren Strebe (Baum oder Center-Strut) angestellt sind.The stiffness in the lateral direction is optimal when the two tip struts are positioned at an acute angle to the middle strut (tree or center strut).
Es ist besonders bevorzugt, wenn die beiden Tip-Struts etwa V-förmig zueinander angestellt sind.It is particularly preferred if the two tip struts are positioned approximately in a V-shape relative to each other.
Das erfindungsgemäße Konzept lässt sich vorteilhaft bei einem Flügelrigg mit aufblasbarer Center-Strut realisieren. An dieser können Handles oder zumindest ein Baum befestigt sein, sodass das Führen des Flügelriggs vereinfacht ist.The inventive concept can be advantageously implemented with a wing rig with an inflatable center strut. Handles or at least a boom can be attached to this, so that the guidance of the wing rig is made easier.
Das Handling ist weiter verbessert, wenn eine derartige Center-Strut zumindest mit einer Griffmulde ausgebildet ist, die von einem Handle oder Baum überstreckt ist.Handling is further improved if such a center strut is designed with at least one grip recess that is extended by a handle or tree.
Bei einem Ausführungsbeispiel eines Flügelriggs sind entlang der, vorzugsweise parallel zur Anströmrichtung des Flügelriggs verlaufenden, Side-Edges Winglets ausgebildet, durch die die Streckung (Aspect Ratio) des Flügelriggs erhöht wird, ohne die Spannweite zu vergrößern. Dies ist insbesondere bei kleineren Personen und größeren Flügelriggs vorteilhaft, da ein unerwünschtes Aufsetzen der Tips auf dem Wasser beim Amwindfahren oder während Manövern verhindern wird. Derartige Winglets bewirken einen verringerten induzierten Luftwiderstand bei hohen Auftriebswerten, insbesondere bei niedrigen Fahrgeschwindigkeiten, wobei die Stabilität um die Gierachse verbessert wird. Aufgrund des verringerten Trägheitsmomentes um die Längsachse (Rollachse) wird auch die Wendigkeit verbessert.In one embodiment of a wing rig, winglets are formed along the side edges, which preferably run parallel to the direction of flow of the wing rig, increasing the aspect ratio of the wing rig without increasing the span. This is particularly advantageous for smaller people and larger wing rigs, as it prevents the tips from touching the water when sailing close-hauled or during maneuvers. Such winglets reduce induced drag at high lift values, especially at low speeds, improving stability around the yaw axis. Due to the reduced moment of inertia around the longitudinal axis (roll axis), maneuverability is also improved.
Derartige Winglets können beispielsweise durch starre Formteile oder als inflatable Körper ausgebildet sein.Such winglets can be formed, for example, by rigid molded parts or as inflatable bodies.
Bei einem Ausführungsbeispiel der Erfindung sind die Winglets aus faserverstärktem Kunststoff ausgeführt, beispielsweise aus Kohlefaser, wobei die Winglets über geeignete Verbindungsmittel an das Flügelrigg oder die Flügelriggstruktur angesetzt werden.In one embodiment of the invention, the winglets are made of fiber-reinforced plastic, for example carbon fiber, wherein the winglets are attached to the wing rig or the wing rig structure via suitable connecting means.
Das Abstützen dieser Winglets erfolgt dann vorzugsweise durch die Tip-Struts, die ihrerseits wieder inflatable oder starr ausgebildet sein können.These winglets are then preferably supported by the tip struts, which in turn can be inflatable or rigid.
Die Winglets können sich dabei mit Bezug auf die Wasseroberfläche nach oben oder nach unten oder beidseitig, d.h. sowohl nach oben als auch nach unten erstrecken.The winglets can extend upwards or downwards with respect to the water surface or on both sides, i.e. both upwards and downwards.
Die Anmelderin behält sich vor, auf diese entlang der Side-Edges der Canopy angeordneten Winglets eigene, unabhängige Ansprüche zu richten, wobei die Tip-Struts optional vorgesehen sein können.The applicant reserves the right to make its own independent claims regarding these winglets arranged along the side edges of the canopy, whereby the tip struts can be provided optionally.
Bevorzugte Ausführungsbeispiele der Erfindung werden im Folgenden anhand schematischer Zeichnungen näher erläutert. Es zeigen:
-
Figur 1 zeigt eine Unteransicht eines Flügelriggs 1, wobei gestrichelt die Kontur eines herkömmlichen Flügelriggs dargestellt ist; -
zeigt das erfindungsgemäße Flügelrigg in einer Alleinstellung;Figur 2 -
Figur 3 zeigt eine Draufsicht auf das Flügelrigg gemäß ;Figur 2 -
zeigt eine Seitenansicht des erfindungsgemäßen Flügelriggs;Figur 4 -
Figur 5 eine dreidimensionale Darstellung eines Ausführungsbeispiels eines Flügelriggs mit Winglets; -
das Flügelrigg gemäßFigur 6Figur 5 in einer Ansicht schräg von unten; -
Figur 7 eine Draufsicht des Flügelriggs gemäß denFiguren 5 und 6 ; -
eine Unteransicht des Flügelriggs gemäß denFigur 8 undFiguren 5, 67 ; -
Figur 9 eine Unteransicht einer Variante eines erfindungsgemäßen Flügelriggs mit aufblasbaren Winglets und -
das Flügelrigg gemäßFigur 10Figur 9 in einer Ansicht schräg von unten.
-
Figure 1 shows a bottom view of a wing rig 1, with the outline of a conventional wing rig being shown in dashed lines; -
Figure 2 shows the wing rig according to the invention in a unique position; -
Figure 3 shows a top view of the wing rig according toFigure 2 ; -
Figure 4 shows a side view of the wing rig according to the invention; -
Figure 5 a three-dimensional representation of an embodiment of a wing rig with winglets; -
Figure 6 the wing rig according toFigure 5 in a view obliquely from below; -
Figure 7 a plan view of the wing rig according to theFigures 5 and 6 ; -
Figure 8 a bottom view of the wing rig according to theFigures 5, 6 and7 ; -
Figure 9 a bottom view of a variant of a wing rig according to the invention with inflatable winglets and -
Figure 10 the wing rig according toFigure 9 in a view obliquely from below.
Wie in der
Das in
Mit gestrichelten Linien ist in
Dies wird unter anderem erfindungsgemäß dadurch erreicht, dass die beiden Tips 12, 14 der etwa bogenförmig gekrümmten Fronttube 2 gegenüber der gestrichelt eingezeichneten herkömmlichen Bauweise (siehe gestrichelte Bezugslinien 12, 14) gekürzt sind, sodass sich diese nicht mehr bis zur Trailing-Edge 10 erstrecken. Im Abstand zu den Endabschnitten der beiden Tips 12, 14 ist jeweils eine Tip-Strut 18, 20 vorgesehen, die einerseits an die Fronttube 2 angebunden ist und sich hin bis zur Trailing-Edge 10 erstreckt. Diese Längserstreckung endet in etwa in dem Bereich, in dem die herkömmlichen Tips 12, 14 (siehe gestrichelte Linien) enden. Die Tip-Struts 18, 20 können starr nach Art einer Segellatte oder inflatable ausgeführt sein.This is achieved according to the invention, among other things, in that the two
Dies wird anhand der
In dieser Darstellung sieht man, dass die beiden Tip-Struts 18, 20 im Übergangsbereich von der eigentlichen Fronttube 2 zu deren etwas schräg dazu angestellten Tips 12, 14 angeordnet sind. Diese Übergangsbereiche sind in
Zwischen den Enden der Tip-Struts 18, 20 und den stromaufwärts davon gelegenen Endabschnitten der Tips 12, 14 erstreckt sich jeweils eine Side-Edge 26, 28 der Canopy 8. Diese Side-Edge 26, 28 verläuft dementsprechend ebenfalls in etwa parallel zu der mit einem Pfeil gekennzeichneten theoretischen Anströmrichtung des Flügelriggs 1. Die Tips 12, 14 schließen mit der jeweils zugeordneten Tip-Strut 18, 20 jeweils einen spitzen Winkel α ein. Im Unterschied zu dem herkömmlichen Flügelrigg 1 ist die Fronttube 2 mit den daran ausgebildeten Tips 12, 14 im Wesentlichen lediglich im Bereich der Leading-Edge 10 ausgebildet, während die seitlichen Abschnitte des Flügelriggs 1 zwischen der Leading-Edge 16 und der Trailing-Edge 10 durch das Tuch der Canopy ausgebildet sind. Der Anstellwinkel α ist dabei so gewählt, dass die Lateralsteifigkeit (siehe Pfeil in
In der Draufsicht hat die Canopy 8 des Flügelriggs 1 somit in etwa die Form eines abgeflachten Fünfecks oder Trapezes, wobei die Trailing-Edge 10 jeweils in den Bereichen zwischen der Center-Strut 4 und den Side-Struts 18, 20 konkav geschnitten ist, um ein Flattern zu verhindern. Auch die Side-Edges 26, 28 können leicht konkav geschnitten sein.In the top view, the
Die Trailing-Edge 10 ist zum Ende der Center-Strut 4 hin angepfeilt, so dass die überströmte Länge L des Flügelriggs 1 im mittleren Bereich deutlich größer als im Bereich der Side-Edges 26, 28 ist. Wie erläutert, sind die Trailing-Edge-Abschnitte 10a, 10b konkav geschnitten.The trailing
Aufgrund der frei verlaufenden Side-Edges 26, 28 ist das erfindungsgemäße Flügelrigg 1 in Vertikalrichtung (siehe Pfeil in
Bei dem dargestellten Ausführungsbeispiel ist der Durchmesser der Center-Strut 4 im Bereich zwischen der Fronttube 2 und dem rechts (Ansicht nach
Anhand der
Zur Abstützung der Winglets 36, 38 sind die beiden Tip-Struts 18, 20 vorgesehen, die bei diesem Ausführungsbeispiel nicht aufblasbar, sondern aus einem festen/starren Material, beispielsweise aus Kohlefaser, hergestellt sind. Wie vorstehend erläutert, erstrecken sich die Tips-Struts 18, 20 weg von der Fronttube 2 hin zum Endabschnitt der Leading-Edge 16 und somit hin zur Abrisskante 40, 42 des jeweiligen Winglets 36, 38, so dass die Seitenstrukturen des Flügelriggs 1 abgestützt sind, jedoch im Bereich der Tips 12, 14 noch der vorbeschriebene Twist und Flex gewährleistet ist, um das gewünschte Flugverhalten zu generieren.The two tip struts 18, 20 are provided to support the
Die Tip-Struts 18, 20 sind demnach so ausgelegt, dass das Flügelrigg im Bereich der Tips in der Vertikalrichtung (nach oben oder nach unten in
Die maximale Höhe H der Winglets 36, 38 ist dabei wesentlich geringer als die Länge L der Side-Edges 26, 28 oder Winglets 36, 38 ausgebildet.The maximum height H of the
Bei einem Ausführungsbeispiel der Erfindung sind die Winglets 36, 38 und/oder die Tip-Struts 18, 20 abnehmbar an der Struktur des Flügelriggs 1 befestigt. Dabei können beispielsweise die Tip-Struts 18, 20 nach Art einer Segellatte in entsprechenden Taschen angeordnet und dann anströmseitig an der Leading-Edge 16 bzw. der Fronttube 2 und abströmseitig an der Trailing-Edge 10 abgestützt sein, wobei die Spannung über Lattenspanner oder dergleichen verstellbar sein kann, so dass der Flex der Winglets 36, 38 verstellbar ist.In one embodiment of the invention, the
Bei dem Ausführungsbeispiel gemäß
In dieser Darstellung erkennt man auch gut, dass sich die Dicke d der Winglets 36, 38 von der Fronttube 2 weg hin zur Trailing-Edge 10 vorzugsweise vergrößert (prinzipiell kann sich die Dicke d zur Trailing-Edsge 10 auch verringern), so dass die An-/Umströmung optimiert ist. Beim dargestellten Ausführungsbeispiel verjüngt sich das Profil der Winglets 36, 38 zum Betrachter hin (Ansicht nach
Diese sind über die schräg dazu angestellten Tip-Struts 18, 20 insbesondere seitlich abgestützt, so dass der vorbeschriebene Flex bei ansonsten hinreichender Profilsteifigkeit gewährleistet ist. Zur Abstützung können die Winglets 36, 38 mit Stützaufnahmen (nicht dargestellt) ausgeführt sein, an denen die Tip-Struts 18, 20 angreifen oder abgestützt sind.These are supported, in particular laterally, by the tip struts 18, 20 positioned at an angle to them, so that the previously described flex is ensured while the profile is otherwise sufficiently rigid. For support, the
Wahlweise können zu den beschriebenen Tip-Struts 18, 20 noch weitere Struts oder Segellatten oder dergleichen zur Aussteifung/Abstützung der Winglets 36, 38 vorgesehen sein.Optionally, in addition to the described tip struts 18, 20, further struts or sail battens or the like can be provided for stiffening/supporting the
In
Anstelle der beiden Handles 34a, 34b kann auch ein durchgehendes großes Handle oder ein Baum an die Center-Strut 4 angesetzt sein. Prinzipiell ist es auch möglich, die aufblasbare Center-Strut 4 durch einen festen Baum zu ersetzen.Instead of the two
Bei dem vorbeschriebenen Ausführungsbeispiel erstrecken sich die Winglets 36, 38 nach oben - in den
Bei einem Konzept mit aufblasbaren Winglets 36, 38 wird es bevorzugt, wenn diese an das One-Pump-System 6 des Flügelriggs 1 angeschlossen sind, so dass die Fronttube 2, die angedeutete Center-Strut 4 und die Winglets 36, 38 über ein gemeinsames Ventil aufgepumpt werden können. In der Darstellung gemäß
Prinzipiell können auch Hybridlösungen verwendet werden, bei denen die Winglets 36, 38 aus einer teilweise starren und inflatable Struktur ausgebildet sind.In principle, hybrid solutions can also be used in which the
In der Schrägansicht von unten gemäß
Diese Fixierbereiche 52, 54 können beispielsweise Adapterplatten sein, die an der Außenhaut der Center-Strut 4 befestigt sind. Dabei können mehrere Fixierbereiche 52, 54 nebeneinander liegend angeordnet sein, so dass die Position der Handles 34a, 34b (ver-)änderbar ist. Derartige Fixierbereiche 52, 54 für die Handles 34 sind auch bei den eingangs beschriebenen Ausführungsbeispielen des Flügelriggs 1 vorgesehen.These fixing
Wie beschrieben, ist das erfindungsgemäß Konzept sowohl bei herkömmlichen Flügelriggs 1 mit einer aufblasbaren Center-Strut 4 oder einem mittig angeordneten Baum, der die inflatable Center-Strut 4 ersetzt oder bei Hybridlösungen, bei denen an einer inflatable Center-Strut Handles und / oder vergleichsweise kurze "Bäume", das heißt aus einem biegesteifen Material, wie beispielsweise Aluminium, gefertigte Handles angeordnet sind, realisierbar. Derartige Lösungen sind in dem eingangs genannten, auf die Anmelderin zurückgehenden, Stand der Technik beschrieben.As described, the inventive concept can be implemented both in conventional wing rigs 1 with an
Offenbart ist ein handgestütztes Flügelrigg für windkraftgetriebene Sportarten mit einer Fronttube und in Tipbereichen angeordneten festen oder inflatable Tip-Struts, wobei sich zwischen den Tips der Fronttube und den Endabschnitten der Tip-Struts jeweils Side-Edges hin zu einer Trailing-Edge einer Canopy erstrecken.Disclosed is a hand-supported wing rig for wind-powered sports with a front tube and fixed or inflatable tip struts arranged in tip areas, with side edges extending between the tips of the front tube and the end sections of the tip struts towards a trailing edge of a canopy.
- 11
- FlügelriggWing rig
- 22
- FronttubeFront tube
- 44
- Center-StrutCenter Strut
- 66
- One-Pump-SystemOne-pump system
- 88th
- CanopyCanopy
- 1010
- Trailing-EdgeTrailing Edge
- 1212
- TipTip
- 1414
- TipTip
- 1616
- Leading-EdgeLeading Edge
- 1818
- Tip-StrutTip Strut
- 2020
- Tip-StrutTip Strut
- 2222
- ÜbergangsbereichTransition area
- 2424
- ÜbergangsbereichTransition area
- 2525
- FensterWindow
- 2626
- Side-EdgeSide Edge
- 2828
- Side-EdgeSide Edge
- 3030
- Endbereich Center-StrutEnd area center strut
- 3232
- GriffmuldeGrip recess
- 3434
- HandleHandle
- 3636
- WingletWinglets
- 3838
- WingletWinglets
- 4040
- AbrisskanteTear-off edge
- 4242
- AbrisskanteTear-off edge
- 4444
- StrutabschnittStrut section
- 4646
- StrutabschnittStrut section
- 4848
- AnbinderTie-down
- 5050
- AnbinderTie-down
- 5252
- FixierbereichFixing area
- 5454
- FixierbereichFixing area
Claims (14)
- Hand-supported wing rig (1) for wind power-driven sports with an inflatable front tube (2), with an approximately centrally arranged strut, for example a tree or an inflatable center strut (4), which extends approximately from the front tube (2) as far as a trailing edge (10) of a canopy (8), and with fixed or with inflatable tip struts (18, 20), which extend away at a distance from end sections of the front tube (2) in the direction of end sections of the trailing edge (10) of the canopy (8) and which preferably enclose an acute angle (α) with tips (12, 14) of the front tube (2), characterised in that side edges (26, 28) of the canopy (8) extend approximately between end sections of the tip struts (18, 20) and the ends of the tips (12, 14) of the front tube (2).
- Wing rig according to claim 1, wherein the side edges (26, 28) are arranged approximately parallel to the inflow direction of the wing rig (1).
- Wing rig according to one of the preceding claims, wherein in each case the tip struts (18, 20), the tips (12, 14) of the front tube (2) and the side edges (26, 28) delimit approximately a triangular structure.
- Wing rig according to one of the preceding claims, wherein the tip struts (18, 20) are set at an acute angle to the strut.
- Wing rig according to one of the preceding claims, wherein the two tip struts (18, 20) are set approximately V-shaped to one another.
- Wing rig according to one of the preceding claims, wherein the strut is designed as an inflatable center strut (4).
- Wing rig according to claim 6, wherein the center strut (4) is designed with at least one grip trough (32), which is extended by a handle (34) or a tree.
- Wing rig according to claim 6, wherein the center strut (4) is provided with a plurality of flexible handles (34) or handles (34) made of a rigid material.
- Wing rig, in particular according to one of the preceding claims 1 to 8, wherein winglets (36, 38) are arranged along the side edges (26, 28).
- Wing rig according to claim 9, wherein the winglets (36, 38) are rigid moulded parts and/or inflatable.
- Wing rig according to claim 10, wherein the winglets (36, 38) consist of fibre-reinforced plastics material.
- Wing rig according to claim 9, 10 or 11, wherein the winglets (36, 38) are exchangeable.
- Wing rig according to one of claims 9 to 12, wherein the winglets (36, 38) are supported by the tip struts (18, 20).
- Wing rig according to one of claims 9 to 13, wherein the winglets (36, 38) extend upwards and/or downwards with respect to the surfer.
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DE102020135034 | 2020-12-29 | ||
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DE102021112724.6A DE102021112724A1 (en) | 2020-12-29 | 2021-05-17 | wing rig |
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FR3121657A1 (en) * | 2021-04-12 | 2022-10-14 | F. One | Autonomous traction wing |
US20240124112A1 (en) * | 2021-04-12 | 2024-04-18 | F. One | Self-contained traction wing |
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Publication number | Priority date | Publication date | Assignee | Title |
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FR2501618B1 (en) | 1981-03-11 | 1985-10-04 | Le Bail Roland | VEIL WITH PROPELLANT AND VARIABLE LIFT EFFECT |
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 |
DE102009011480A1 (en) * | 2009-03-06 | 2010-09-09 | Thomas Dr. Gartner | Flexible high performance sail |
DE102014003878A1 (en) | 2013-10-08 | 2015-04-09 | Afc Rechenzentrum Gmbh | Method for the location-independent trade in products (mobile commerce) under payment via a portable telecommunication device (mobile payment) |
DE102019101656A1 (en) | 2019-01-23 | 2020-07-23 | Boards & More Gmbh | Wing rig |
DE102020122145A1 (en) | 2019-10-31 | 2021-05-06 | Boards & More Gmbh | Wing rig |
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