EP2531396B1 - Water vehicle having a profiled element arranged on the bow side - Google Patents

Description

The invention relates to a device for bow-side arrangement of a profile body on a watercraft and a watercraft with a wind engaging element.

In the prior art, in wind-driven watercraft, it is known to have dumb-sliders, folding swords and lifting keels or the like which reduce the drift of the watercraft. At downwind courses of the vessels, e.g. Sailing vessels, where the drift is low or not at all, it is possible to retract the stalkers, folding swords or Hubkiele to reduce the flow resistance of the vessel or to allow a draft of the vessel in a shallow waters.

The devices mentioned (Steckschwerter etc.) are designed for conventional sailing drives and difficult to use. In addition, the devices mentioned are structurally complex and usually affect the usable volume of the vessel, since these devices are usually located centrally in the middle of the vessel.

Furthermore, it is known that in today's wind-powered watercraft, a fixed ballast keel is provided to reduce the drift and to achieve a heeling moment counteracting righting moment. Here, the weight of Ballastkiels is usually one-third to half of the total weight of the vessel, which is correspondingly limited the operational capability or performance of the vessel and also results in a higher draft.

In addition, is off DE 195 28 796 A1 a method for drift-poor or drift-free operation of a sailing ship with a keel fin and a held outside of the midships plane and adjustable accordingly to the wind sails known.

It is also in DE 10 2007 008 277 A1 discloses a device for absorbing shear forces in a ship with wind-powered propulsion systems for ships.

Moreover, it is off EP 2 075 190 A1 a watercraft with a free-flying kite-like wind attack element known as wind propulsion.

In BE-A-1 015 726 a floating device is disclosed which is connected to the nose of a watercraft, wherein a towline is provided for connecting the device to the watercraft.

Further disclosed US-B-6,789,489 a sail-driven watercraft, wherein below the hull a pivotable profile body is arranged in the water, which is pivotally mounted in dependence of the mast connected to it.

Further disclosed WO-A-87/02320 a watercraft, on the underside of a pivotally mounted profile body is arranged, wherein the position of the profile body arranged in the water is pivoted using a sail arranged on a mast in the water.

Based on this prior art, the object of the invention is to reduce in wind attack element driven watercraft in a simple way a drift during operation of the windage element.

This object is achieved by a device for bow-side arrangement of a profile body on a watercraft, with at least one profile body, with means for arranging the at least one profile body at the bow of a watercraft, wherein the one or more profile body mounted parallel to a midships plane, preferably horizontal, pivot axis or is storable or are, wherein the one or more profile body by means of a connecting device, in particular by means of a drawbar, connected or connected at an attack point with a windage element of a windangriffselementgetriebenen watercraft or that depending on the position of the point of attack of the connecting device at windbeaufschlagten windage element or the profile body is pivotable or is or will be pivoted, or a trim device, in particular trim rope, is provided such that the point of application of the connecting device is changeable or changed, whereby the position of the attack point is adjusted or is, and wherein the profile body or bodies are arranged in a horizontal neutral position above the water and are immersed in a pivoted, non-horizontal position at least partially submerged.

The invention is based on the idea that a device or device is provided by the bow-side arrangement of one or more profile body, so that due to, for example, a port or starboard position of a Windangriffselements, in particular a kite, the sideways the predetermined or desired direction of travel wind-swept-member-propelled craft, and converted into propulsion for the vessel in accordance with the requirements and use. For this purpose, in the case of a port-side position of the wind engagement element and the point of application of the connecting device due to the associated pivotable profile body of this port side dipped into the water, since the point of application of the connecting device between the wind engaging element and the profile body of the profile body on the port side automatically by the pulling direction and the tensile force of the Bugangriffselements or is automatically pivoted or immersed in the water, whereby a strong drift of the watercraft is prevented.

During or after immersion of the profile body into the water due to the drift of the vessel additionally acts the water pressure against the submerged profile body, so that it is automatically pivoted in the immersed state in a position in which the by pulling force of the dragon and by the hydrodynamic buoyancy of Profile body generated moments cancel each other, while only the forces directed in the direction of travel are passed to the vessel. No heeling moment is transmitted to the vessel.

In a starboard side positioning of the wind engaging element or the point of application for the connecting device of the profile body at the wind engaging element or the point of application is also positioned starboard side, so that the starboard profile body or the starboard side of the profile body is swung or immersed in the water accordingly.

Preferably, when driving in the pulling direction of the wind engaging element, in particular the kite, i. in pre-wind courses, the profile body held above the water surface in the neutral position, whereby a possible flow resistance of the profile body is minimized or is.

In particular, the pivot axis of the profile body in the midships plane is aligned horizontally, wherein the one or more profile body hydrodynamically each of the pulling action of the windage element counteracting and buoyancy generating are formed. By the introduction of force via the connecting device between the wind engaging element and the profile body or the profile body, the profile body are automatically in the appropriate position-dependent Direction turned.

In addition, it is provided in one embodiment that the profile body or profiles have a drop-shaped profile in cross-section, resulting in a hydrodynamically optimized flow-line shape of the profile body.

Furthermore, it is advantageous in one embodiment that the profile body or bodies are pivotally mounted about a profile body longitudinal axis, wherein in particular the profile body longitudinal axis of the profile body or the profile body in a neutral position is transverse, in particular perpendicular to the midships plane, formed or are.

It is provided that a trim device, in particular trim rope or the like, is provided such that the point of the connecting device on the wind engaging element and the pull rope or the like is changed or changed, whereby the position of the attack point for the connecting device between the profile body and the point is set or is depending on the predetermined request. The balance of the vessel can thereby be changed. With a sufficiently large drawbar and a boat shape that is relatively resistant to rotation, even the control of the craft can be accomplished solely by controlling the kite, as the vessel remains at a fixed angle to the pulling direction of the kite that can be changed by the trim rope. As a result, the operation of the watercraft can be extremely simple and also by a single person without aids such. Autopilot be accomplished.

In addition, the device is characterized for bow-side arrangement a profile body further characterized in that the one or more profile body additionally comprises or have fin body at its longitudinal ends, wherein in particular the fin body laterally project beyond the cross-sectional profile of the profile body or the profile body in the end region.

It is provided that the one or more profile body are arranged in a horizontal neutral position above the water and are immersed in a pivoted, non-horizontal position at least partially submerged.

Preferably, the profile body or bodies are also mounted resiliently about their profile body longitudinal axis using at least one Profilkörperfedereinrichtung.

Moreover, the invention is characterized in that the buoyancy of the profile body is variably adjustable. For this purpose, it is provided that the profile body or bodies each consist of a plurality of mutually rotatable parts and components and automatically the respective optimum buoyancy is set.

Furthermore, the object is achieved by a watercraft with a wind engagement element and with at least one profile body arranged at the bow of the watercraft, wherein a device described above for bow-side arrangement of a profile body is provided on a watercraft with at least one profile body.

For this purpose, it is preferable if the or the profile body in his or her is arranged in its neutral position symmetrical to midships plane or are.

In the context of the invention, the profile body may be integral, so that the profile body is formed, for example, in the manner of a support surface. In addition, it is possible within the scope of the invention that in each case a profile body is disposed on the bow of the vessel portboard and starboard side, in particular, the two profile body are preferably connected to each other. In particular, the profile bodies are arranged to be in their neutral position, i. are arranged horizontally above the water or the waterline on the vessel in particular in the horizontal orientation and in the Nichtverschwenkposition.

Furthermore, a further development of the watercraft is characterized in that a control device for controlling the position of the point of application of the connecting device is provided on the windage element.

Furthermore, it is provided in the context of the invention that a locking device is provided, for example, to lock the profile body or in his or her neutral position, thereby driving in shallow waters or to facilitate the control or stabilization in a fast pre-wind Allow the boat to glide.

In addition, it is provided that the engagement points of the connecting device, in particular drawbars, of the profile body or bodies, preferably parallel to the longitudinal axis of the watercraft, using a corresponding trim means for the connection means are adjustable to adjust a predetermined balance of the profile body or.

Further features of the invention will become apparent from the description of the invention Embodiments together with the claims and the accompanying drawings can be seen. Embodiments of the invention may satisfy individual features or a combination of several features.

Fig. 1

schematisch eine perspektivische Ansicht eines Burgbereichs eines Schiffes mit einem erfindungsgemäßen Bugvorbau und

Fig. 2

schematisch eine perspektivische Ansicht eines Bootes mit einem weiteren erfindungsgemäßen Bugvorbau.

The invention will be described below without limiting the general inventive idea by means of embodiments with reference to the drawings, reference being expressly made to the drawings with respect to all in the text unspecified details of the invention. Show it:

Fig. 1

schematically a perspective view of a castle area of a ship with a bow stem according to the invention and

Fig. 2

schematically a perspective view of a boat with another bow stem according to the invention.

In the following figures, identical or similar elements or corresponding parts are provided with the same reference numerals, so that a corresponding renewed idea is dispensed with.

Fig. 1 shows in a simplified schematic representation of the bow portion 20 of a ship 10, wherein the bow portion 20 bow side has a bead bow 30. In front of the bow region 20 or in front of the bulge bend 30, a wing-shaped profile body 40 is arranged via a rod-like connection 41, wherein the rod-like connection 41 is formed and connected to the bow region 20, that the profile body 40 is pivotable about a pivot axis S, wherein the pivot axis S is arranged horizontally aligned in the midships plane of the ship 10.

By the pivotability of the profile body 40, the in Fig. 1 is shown in its neutral position, it is possible to immerse the profile body 40 arranged above the water in the water or to pivot. Above the profile body 40, a drawbar 42 is formed, which is connected to the profile body 40 and is rotatably mounted about the longitudinal axis L of the profile body 40.

The drawbar 42 itself is connected on the side remote from the profile body 40 via a point of application 43 with a pull rope 12 of a kite system of the ship 10. Here, a winch 11 of the kite system is arranged on the drawbar 42, on which the traction cable 12 is wound or is. At the end of the traction cable 12 is a kite 14, preferably a stunt kite, arranged as a wind attack element, which is formed for example in the form of a paraglider or the like. Using the kite system, the powered propulsion of the ship 10 is assisted with prevailing winds.

Due to the distance between the point 43 and the pivot axis S, a lever is formed, whereby the lever and the profile body 40 is pivoted about the pivot axis S. If the point of application 43 of the drawbar 42 is on the port side, then the port-side half of the profile body 40 is immersed in the water. When positioning the point of attack 43 starboard side, the starboard side half of the profile body 40 is dipped accordingly automatically on the starboard side.

By rotating the profile body 40 about the longitudinal axis L, the hydrodynamic lift can be changed so that the proportion of the force transmitted by the kite 14 via the drawbar 42 to the profile body 40 that is perpendicular to the direction of travel compensates exactly and thus no drift takes place. Thus, force directed to the vessel 10 is practically exclusively transmitted in the direction of travel via the connection 41.

The tiller 42 also serves as a take-off and landing mast for the kite 14. When driving without wind drive, the drawbar 42 rests together with the folded kite 14 on the bow portion 20 of the ship 10th

In addition, it is possible in another embodiment (not shown here) that laterally further fins, preferably at right angles, are attached to the profile body at the end outer surfaces in order to improve the efficiency of the profile body 40 when immersed in the water during the journey of the ship.

In addition, it is within the scope of the invention also possible, instead of a profile body in each case a profile body on the port side and on the starboard side, as in Fig. 2 is illustrated, to be arranged, wherein the two profile bodies 40.1, 40.2 are interconnected and thus by means of a corresponding linkage or the like are thus connected to the rod-like connection 41 for connection to the bow portion 20 of the ship 10.

At im Fig. 2 illustrated embodiment of a bow stem 100 two spaced-apart profile body 40.1, 40.2 are arranged on the bow front side of the boat, wherein the profile body 40.1 starboard side and the profile body 40.2 is arranged port side. The two drop-shaped profile body 40.1, 40.2 are connected to each other by means of a connecting device 45 in the form of a cross member or the like. Further are also the rod-like connection 41 and the drawbar 42 with two profile bodies 40.1, 40.2 connected.

To adjust the point of application 43 on the traction cable 12, the rear region of the boat 10 is connected via a trim cable 44 to the drawbar 42 in order to adjust a preferred and predetermined point of application 43 for the drawbar 42 accordingly.

By shortening or lengthening the trim cable 44 on the drawbar 42, it is possible due to the set point of attack the traction of the kite 14 in a propulsion or in a return to decelerate the boat 100 or the tensile force in a neutral position or parking position of the drawbar 42 accordingly compensate.

Since the point 43 remains at a fixed position relative to the boat 100 for a given length of the trim cable 42 and forms a large lever about the midpoint midway, the boat 100 can be controlled by changing the direction of the kite.

In addition, in Fig. 2 the longitudinal axis L of the profile body 40.1, 40.2 shown, it being possible that the profile body 40.1, 40.2 to pivot about the longitudinal axis L using a lever 46 and a push rod 47, whereby, for example, the maneuverability of the boat 100 is further increased.

In addition, it is possible in a further embodiment that the profile body 40.1, 40.2, preferably about its longitudinal axis L, are resiliently mounted, in which case the strongly fluctuating tensile forces of the kite 14 can be compensated by using a suspension.

All mentioned features, including those of the drawing alone to be taken as well as individual features that are disclosed in combination with other features are considered alone and in combination as essential to the invention. Embodiments of the invention may be accomplished by individual features or a combination of several features.

LIST OF REFERENCE NUMBERS

10

ship

11

winch

12

rope

14

dragon

20

bow

30

bulbous bow

40, 40.1, 40.2

profile body

41

connection

42

shaft

43

attackpoint

44

trim rig

45

connecting device

46

lever

47

pushrod

100

boat

S

swivel axis

L

longitudinal axis

Claims (9)

1. A device for the arrangement of a profile body (40) on the bow side of a water vehicle (10, 100) with at least one profile body (40, 40.1, 40.2), with means for arranging the at least one profile body (40.1, 40.2) on the bow (20) of a water vehicle (10, 100), wherein the profile body or bodies (40, 40.1, 40.2) is or are mounted or mountable about a pivotal axis (S), which is parallel to the ship's central plane and is preferably horizontal, wherein the profile body or bodies (40, 40.1, 40.2) is or are connected or connectable by means of a connecting device (42), particularly by means of a shaft (42), at a point of action (43) to a wind action element (14) of a wind action element driven water vehicle (10, 100) such that, depending on the position of the point of action (43) of the connecting device (42) on the wind action element (14) acted on by the wind, the profile body or bodies (40, 40.1, 40.2) is or are pivotable or pivoted, whereby a trimming device (44), particularly a trimming rope (44), is provided such that the point of action (43) of the connecting device is alterable or altered, whereby the position of the point of action is adjusted, and wherein the profile body or bodies (40, 40.1, 40.2) are arranged in a horizontal neutral position above the water and are immersed at least partially in the water in a pivoted, non-horizontal position.
2. A device as claimed in claim 1, characterised in that the profile body or bodies (40, 40.1, 40.2) have a drop-shaped profile in cross section.
3. A device as claimed in claim 1 or 2, characterised in that the profile body or bodies (40, 40.1, 40.2) are mounted to be pivotable about a profile body longitudinal axis (L), wherein, in particular, the profile body longitudinal axis (L) of the profile body (40, 40.1, 40.2) or the profile bodies (40, 40.1, 40.2) is or are formed transversely, particularly perpendicularly, to the ship's central plane, in a neutral position.
4. A device as claimed in one of claims 1 to 3, characterised in that the profile body or bodies (40, 40.1, 40.2) has or have fin bodies on its long ends, wherein, in particular, the fin bodies extend beyond the cross sectional profile of the profile body (40, 40.1, 40.2) or the profile bodies (40, 40.1, 40.2) in the end region.
5. A device as claimed in one of claims 1 to 4, characterised in that the profile body or bodies (40, 40.1, 40.2) are resiliently mounted about their profile body longitudinal axis (L).
6. A device as claimed in one of claims 1 to 5, characterised in that the lift of the profile bodies (40, 40.1, 40.2) is variably adjustable.
7. A water vehicle (10, 100) with a wind action element and with at least one profile body (40, 40.1, 40.2) arranged on the bow (20) of the water vehicle (10, 100), wherein a device as claimed in one of claims 1 to 6 is provided.
8. A water vehicle (10, 100) as claimed in claim 7, characterised in that the profile body or bodies (40, 40.1, 40.2) is or are arranged in its or their neutral position symmetrically with respect to the ship's central plane.
9. A water vehicle (10, 100) as claimed in claim 7 or 8, characterised in that a control device is provided for controlling the position of the point of action of the connecting device on the wind action element.

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