Control assembly for a hydrofoil craft

Abstract

The invention relates to an assembly for a hydrofoil craft (1), comprising a body around which a flow passes, for example a hydrofoil, a tail assembly (300), or a propulsion device (200), such as a propeller or an impeller, wherein, during operation of the hydrofoil craft (1), water flows around this body, which is subjected to dynamic lift. The invention also relates to an air-supply assembly which is designed to provide air so that it reaches this body, in order to bring about a reduction in the dynamic lift. The assembly can be provided in an altitude-limiting assembly for a hydrofoil craft.

Description

[0001] STEERING ARRANGEMENT FOR A HYDROFOIL WATERCRAFT

[0002] FIELD OF THE INVENTION

[0003] The present invention relates to an air supply device for a hydrofoil watercraft, for example an electrically powered hydrofoil board. Furthermore, the present invention relates to a hand control for a hydrofoil watercraft or for a hydrofoil water sports device, for example an electrically powered hydrofoil board. Furthermore, the present invention relates to a system for operating a hydrofoil water sports device or a hydrofoil watercraft using such a hand control, or to a system for operating a hydrofoil water sports device with a hand control and a hydrofoil water sports device. Furthermore, the present invention relates to safety features for the safe operation of the hydrofoil water sports device.

[0004] BACKGROUND

[0005] Motorized surfboards have become increasingly popular in recent years. In the field of motorized surfboards, surfboards have been developed that are equipped with a hydrofoil to reduce the power required for propulsion.

[0006] Such surfboards or hydrofoil watercraft usually have a hand control with which the power of an engine of the hydrofoil watercraft can be regulated.

[0007] However, such a state-of-the-art hand control system makes it difficult for a beginner to get started, as the interaction of the hand control with the handling of the hydrofoil watercraft (e.g., maintaining balance) requires processing numerous inputs and reacting accordingly. SUMMARY OF THE INVENTION

[0008] There is a need for an improved hydrofoil watercraft. Therefore, there is also a need for a hand control for a hydrofoil watercraft and a system for operating a hydrofoil watercraft that makes it easier for beginners to quickly and easily learn how to handle a hydrofoil watercraft. Furthermore, there is a need for safety features that enable safe operation of the hydrofoil watercraft and protect a rider from unexpected situations or assist the rider.

[0009] Against this background, it is an object of the invention to provide an improved control arrangement for a hydrofoil watercraft which can assist the user during driving.

[0010] Furthermore, it is an object to provide an improved hand control for a hydrofoil watercraft and an improved system for operating a hydrofoil watercraft, as well as an improved hydrofoil watercraft.

[0011] This object is achieved by the features of the independent patent claim. Further advantageous developments are the subject of the dependent claims. Furthermore, further desirable aspects, features, and properties will become apparent from the summary of the invention and the detailed description, as well as the appended claims—in conjunction with the accompanying drawings.

[0012] A first aspect of the present invention relates to a control arrangement for a hydrofoil watercraft. The control arrangement has a flow-around body. In the context of the present disclosure, a flow-around body is understood to be a body around which water flows and / or is moved by water during operation of the hydrofoil watercraft. The flow-around body can have a flow-around profile or be designed as a flow-around profile. The flow-around body can be or have a hydrofoil, a tail unit, also called a stabilizing element, or a drive device. The drive device can be, for example, a propeller or an impeller. The flow-around body is designed such that, during operation of the hydrofoil watercraft in the water, a reaction force is generated due to a relative movement between the water and the flow-around body.

[0013] The reaction force can be a lift force, a downforce, or a thrust force, depending on the flow body. For example, the flow body can be an airfoil, where the reaction force is a lift force experienced by the airfoil when water flows around it or is moved through water. The flow body can be a tail unit, where the reaction force is a downforce experienced by the tail unit when water flows around it or is moved through water. The flow body can be a propeller or impeller, where the reaction force is a thrust force when the flow body is rotated in the water.

[0014] The control arrangement further comprises an air supply arrangement which is designed to supply air in such a way that it at least partially reaches the flow-around body in order to bring about a change, for example a reduction, in the reaction force. According to one basic idea, the generation of reaction forces on the flow-around body is thus influenced by supplying air. More precisely, air can be introduced into water which flows around the flow-around body or through which the flow-around body is moved, so that the reaction forces on the flow-around body normally caused by the water only occur to a reduced extent or are eliminated entirely. In some embodiments, the air can also be supplied in such a way that it at least partially forms a layer between the water and the flow-around body. With an increasing amount of air instead of water on the flow-around body, the reaction force can be reduced.Thus, the reaction forces can be controlled by introducing air into the medium flowing around the flow body, for example to stabilize the hydrofoil watercraft or prevent unwanted movements. For example, by providing air on the wing, the lift force acting on it can be influenced or specifically reduced, so that, at a constant speed of the hydrofoil watercraft, a distance between the water surface and a floating body or a buoyancy body, such as a board, can be adjusted. This distance is also referred to as flight altitude. In the case of a tail unit, for example, the downforce can be influenced and the flight altitude can be adjusted accordingly.Supplying air to the propulsion device reduces thrust, thereby reducing the speed of the hydrofoil vessel. This in turn reduces lift and downforce on other flow bodies, with a corresponding effect on the reaction forces occurring there. It is also possible to design the control arrangement so that it supplies different amounts of air to different regions of the flow body, for example a hydrofoil. For example, the control arrangement can be designed so that it supplies a predetermined amount of air only to the left or right side of the hydrofoil, thereby causing the hydrofoil vessel to tilt lateralwards. It is also conceivable to supply different amounts of air to the left and right sides of the hydrofoil.In this respect, the control arrangement can control the movement of the hydrofoil watercraft and thereby implement the function of rudders or movable flaps without the need for moving components. Such a control arrangement is more cost-effective and less prone to failure than control arrangements with moving components. Such a control arrangement can be used, for example, if the hydrofoil watercraft is to be controlled automatically. For example, a configuration is conceivable in which the flight altitude is to be kept constant or a predetermined flight altitude is not to be exceeded. Using the control arrangement, this can be achieved through targeted air supply.

[0015] A flight altitude limiting arrangement for a hydrofoil watercraft may be provided. The flight altitude limiting arrangement may include a control arrangement as disclosed elsewhere in this specification.The flight altitude limitation arrangement can be designed to supply air to a flow-around body, for example a drive device, for example a propeller or impeller, of the hydrofoil watercraft, for example on the inlet side of the drive device, upstream of the drive device and / or in the region of the drive device, when a distance between a floating body of the hydrofoil watercraft and the water surface is greater than a predetermined maximum distance, or when an immersion depth of a mast arrangement is less than a predetermined reference immersion depth, in order to reduce a reaction force generated by the flow-around body, for example to reduce a thrust force generated by the drive device.

[0016] The air supply arrangement may have one or more outlets. The outlet(s) are provided such that air discharged via the respective outlet can at least partially reach the flow-circulating body, for example, the drive device. One or more outlets can also be provided such that all of the discharged air reaches the flow-circulating body.

[0017] At least one outlet can be provided in a flow channel in which the drive device is arranged. For example, an air duct can be provided that extends into the flow channel, so that the outlet opening of the air duct is positioned in the flow channel.

[0018] Alternatively or additionally, at least one outlet may be provided outside a flow channel in which the drive device is arranged, for example on a hull arrangement or fuselage or on a mast arrangement.

[0019] The air supply arrangement may further include an inlet that is fluidly connectable or fluidly connected to at least one outlet. In some embodiments, the inlet is provided closer to the buoyancy of the hydrofoil watercraft than the outlet. In some embodiments, the inlet is positioned above the outlet.

[0020] At least one inlet can be provided on a mast arrangement or a mast, for example on a rear side or rear edge of the mast and / or on a side surface of the mast and / or on a front side or leading edge of the mast. A plurality of inlets can be provided. Two or more inlets can, for example, be arranged one above the other and / or in a line, for example one above the other in the direction of the mast's length. The inlets can be individually switchable, for example by valve arrangements, and / or can be blockable with an object, for example by a closure such as a plug. In this way, only a desired number of inlets or only a predetermined inlet of a plurality of inlets can admit, in particular suck in, air.

[0021] Alternatively or in addition to inlets through which air can be sucked in or admitted, a pressurized air reservoir and / or a pumping device for pressurizing air can be provided, for example in the floating body. Arrangements are conceivable in which a negative pressure is created at the outlet, whereby air can be sucked into the inlet or inlets without the need for a compressed air reservoir and / or a pump. For example, if one or more outlets are arranged in the flow channel in which a propeller or impeller is provided, the suction force generated by the propeller or impeller can be sufficiently large to suck in air.

[0022] The control device can have a detection device. The detection device can detect an air flow through the air supply arrangement. The detection device can have a sensor for detecting an air flow. Alternatively or additionally, the detection device can be configured to detect or determine an air supply, for example, from drive data of the drive device, in particular from motor data of a motor operatively connected to the drive device and / or from motor drive signals of a control unit.

[0023] A motor for driving the propulsion device can be controlled based on a detected airflow, for example, deactivated or throttled down when an airflow is detected. Alternatively or additionally, the hydrofoil watercraft can be transferred to a predetermined operating mode based on a detected airflow, for example, a surfing mode, in which the motor can be deactivated and a flow channel to the propulsion device can be blocked or obstructed.

[0024] The control arrangement may further be configured to detect air supply events and to output a signal based on the detected air supply events, wherein the hydrofoil watercraft may be configured to change an operating setting of the hydrofoil watercraft based on the detected air supply events and / or to present a user with suggestions for an operating setting suitable for the user.

[0025] Also disclosed is a hydrofoil watercraft with a control arrangement and / or altitude limitation arrangement. The control arrangement can also be used to implement a control system, for example, altitude control. A sensor can detect the altitude, which can be compared in a computing unit with a predetermined or preset altitude. If a deviation is detected, air can be supplied to the relevant flow bodies in a targeted manner to counteract the deviation. The air can be pressurized, for example, with a compressor or pump, to provide a sufficient amount of air to the flow body. The altitude can be determined, for example, via a distance sensor on the floating body.Alternatively or additionally, a flight height can also be achieved by arranging several air inlets on the mast one above the other, whereby the flight height can be determined based on which inlets air can enter. This can be detected by appropriate sensors.

[0026] A second aspect of the present invention comprises a hand control for a hydrofoil watercraft and a system for controlling an engine with the hand control. A hand control is understood to be a device that enables manual control of a hydrofoil watercraft. The hand control can be used in conjunction with the control arrangement described above. The hand control has a user-operable input device or a user-operable control element. The input device can be, for example, a lever, a slider, a rotary wheel, a joystick, or a button. The input device is movable along an adjustment path, and the movement of the input device along the adjustment path generates a signal that can be used by a control unit to change the power output of an engine.The adjustment path can have a first partial area, which can form a first functional area, and a second partial area, which can form a second functional area, in which an additional function is triggered or provided.

[0027] The hand control can be set up in such a way that the user is signaled the transition between the first sub-area and the second sub-area.

[0028] The hand control can have a force device that provides a tactile pressure point along the adjustment path, which can be overcome by applying increased force. Alternatively or additionally, the force device can apply a force to the input device along the adjustment path that counteracts any movement or direction of movement of the input device by the user.

[0029] The hand control can be configured so that, on the one hand, a change in an engine power output can be effected with the input device depending on the adjustment path, and, on the other hand, certain additional functions can be triggered by positioning and / or moving the input device in a predetermined manner. Alternatively or additionally, the hand control can be configured to determine an output power change rate based on an actual position of the input device or the control element in the adjustment path, and to change an actual output power setpoint of an engine into a new output power setpoint based on the determined output power change rate. Alternatively or additionally, a control unit can be provided which is configured and designed to

[0030] Speed ​​of the hydrofoil vessel to generate and output an engine control signal corresponding to an output power setpoint of an engine of a hydrofoil vessel.

[0031] A hand control can be implemented in which at least two functions can be executed or triggered using a user-operable input device. The input device can be movable along an adjustment path. The movement of the input device along the adjustment path generates a signal that can be used by a control unit to change the power output of a motor. A different force can be applied to the input device in different areas of the adjustment path, counter to a direction of movement of the input device by a user. This enables the user to recognize different sub-areas of the adjustment path. Different functions can, in turn, be assigned to the different areas of the adjustment path. In order to move from one sub-area to another of the adjustment path, it may be necessary to overcome a locally higher counterforce.In this way, the user recognizes when the end of the first sub-area has been reached and when the input device is in the second sub-area or has moved into the second sub-area.

[0032] Furthermore, it can be additionally or alternatively provided that a movement of the input device is monitored and a predetermined function is triggered depending on a predetermined movement or a predetermined movement pattern of the input device. For example, a movement speed or acceleration of the input device can be monitored. A predetermined function can be triggered if a movement speed or acceleration of the input device exceeds a predetermined threshold. For example, a rapid movement of the input device can trigger a predetermined function.

[0033] In some embodiments, it can be provided that when the input device is in the second sub-area, operating settings for controlling a motor, for example power levels, characteristics, or power limitations of a motor, can be changed. For example, power levels or power limitations or power limit values ​​or maximum values ​​can be increased or raised. A condition for adjusting power levels of the motor can thus be that the input device is located in the second sub-area. The operating modes or operating presets, for example a setting of power levels, can be adjusted by a predetermined movement of the input device or by executing a movement pattern with the input device.Alternatively, it can be provided that the motor's power levels or power limits can only be changed when the input device is positioned in the second sub-area. Alternatively or additionally, the power levels can be adjusted via a separate input device, such as a push button.

[0034] In some embodiments, it can be provided that, when the input device is in the second subrange and held therein, a continuously increasing of the motor's power limit, for example, up to a maximum motor power, occurs. In other words, the motor power can be continuously adjusted up to the maximum power. In some embodiments, it can be provided that, when the input device is in the second subrange, a continuously increasing of the motor power occurs along a predetermined characteristic curve.In some embodiments, it may be provided that when the input device is moved from the second sub-area to the first sub-area after the input device has been held in the second sub-area to increase the motor power, the last increased motor power is set as the maximum motor power that can be called up when the input device is moved in the first sub-area.

[0035] In some embodiments, it can be provided that when the input device is moved into the second sub-range, a predetermined multiplication of the maximum power that can be called up in the first sub-range occurs, or a previously called up motor power is multiplied by a predetermined factor. Alternatively, it can be provided that when the input device is moved into the second sub-range, the maximum possible power is called up. Such a function can also be referred to as a booster function. In some embodiments, the above functions, which are brought about by moving the input device into the second sub-range, can be terminated when the input device leaves the second sub-range. In this case, it can be implemented that a higher power output of the motor triggered or brought about in the second sub-range is immediately reduced when the input device leaves the second sub-range.Alternatively, it can be implemented that a higher motor power output triggered or caused in the second sub-range is only reduced when the input device leaves the second sub-range and travels a predetermined distance in the first sub-range from the second sub-range. Alternatively, it can be implemented that a higher motor power output triggered or caused in the second sub-range is reduced with a predetermined time delay or ramp when the input device leaves the second sub-range.

[0036] In some embodiments, the hand control can be designed such that the user receives acoustic and / or optical and / or haptic (vibration) information about the triggered functions and / or the position of the input device on the adjustment path, for example, whether the input device is located in the first sub-area or the second sub-area. Alternatively or additionally, the information can also be provided at other locations, for example on the buoyancy body of the hydrofoil watercraft, for example in an area of ​​the buoyancy body that is visible during travel or an area of ​​the buoyancy body that the user touches during travel. For example, the buoyancy body can be designed as a board and have a loudspeaker.

[0037] The hand control has a control element with which a power output of the motor can be controlled. The control element is also referred to as an input device. The control element can be a movable component. The movable component can be configured for translational and / or rotational movement. The movable component can be movable over a range of motion, also referred to as an adjustment path. In particular, the movable component can be movable over a range of motion or adjustment path between two end positions or end positions. The first end position can be a starting position or home position that the input device assumes or at which the input device is positioned when it is not actuated or released. The movable component can be a finger-actuated component and accordingly configured for actuation with a finger.The movable component may be a thumb-operated component and accordingly configured for actuation with a thumb. The movable component may be configured to move along a predetermined path. The path may, for example, be straight or curved. The movable component may be a rotary wheel or a joystick.

[0038] The movable component can be preloaded toward an initial position. In particular, a urging component or force device can be provided that preloads the movable component toward the initial position or applies a force toward the initial position. The initial position can, for example, be a zero position, which corresponds to a position at which no power is output by the motor. The initial position can be an end position of the movable component.

[0039] The urging component or force device can be a spring. The urging component can comprise a spring assembly. The spring assembly can comprise a plurality of springs arranged in series. The spring assembly can comprise a plurality of springs arranged in parallel. The springs of the spring assembly can have identical or different spring constants. The urging component can be configured to apply a linear urging force to the movable component. The urging component can be configured so that an urging force exerted by the urging component on the movable component changes depending on the position of the movable component.

[0040] The urging component or force device can be an electromechanical component that generates a corresponding urging force based on a control signal and applies it to the movable component. With such an electromechanical component, the urging force can be dynamically varied depending on the control signal. In this way, it is possible to apply different forces to the movable component. In this way, the force required by a user to move the movable component can be adjusted. The electromechanical component can be a motor. The control signal for varying the urging force can be provided, for example calculated, depending on travel parameters, such as the current speed of the hydrofoil watercraft, or depending on detected operating states of the hydrofoil watercraft, for example a detected malfunction.For this purpose, the hydrofoil watercraft and / or the hand control can have a processor that calculates the control signal. For example, the urging component can be controlled such that the urging force is increased if a predetermined maximum speed is exceeded. Alternatively or additionally, the urging component can be controlled such that if a malfunction is detected or if a malfunction is imminent, e.g. overheating of a component, the urging force is increased in order to haptically signal to the user that the hydrofoil watercraft should be moved more slowly. In some configurations, the force device can also be designed such that, based on the control signal, it blocks movement of the movable component towards a second end position, which corresponds to a maximum power output of the motor, beyond a certain point in the adjustment range.The force device can thus be designed to dynamically limit the adjustment travel.

[0041] The urging component or the force device can be configured to apply a force to counteract a movement of the movable component in the direction of the second end position, for example a maximum position or maximum position, at least in a partial range, also referred to as an intermediate range or intermediate position, of the movement range or adjustment range or adjustment path of the movable component. A movement of the movable component or the control element is only possible in at least this partial range against the applied force. The maximum position or maximum position of the movable component can be a second end position of the movable component. The movement of the movable component can be detected and / or monitored via a mechanism and / or sensor system. For example, a position or change in position of the movable component can be detected by a suitable sensor system.It is also possible to determine and / or monitor the movement speed of the control element. The hand control can be configured to adjust operating settings through predetermined movements of the control element. For example, the hand control can be configured to switch between predetermined operating settings depending on a movement speed of the control element, an acceleration of the control element, and / or depending on a predetermined movement pattern of the control element. For example, a configuration is conceivable in which, when the movement speed of the control element exceeds a predetermined limit, the hand control triggers a change from one operating setting to another operating setting.However, a configuration is also conceivable in which repeated movements within a predetermined period of time trigger a change from one operating setting to another operating setting.

[0042] The hand control can be configured to allow a user to independently define the predetermined movements and / or movement patterns for triggering a change from one operating setting to another. It is conceivable that a user can select from a variety of different options or store a movement pattern themselves. For example, the hand control can be put into a learning mode, in which a user can record a desired movement pattern for a change from one operating setting to another. However, it is also conceivable to program such a movement pattern using an assistive menu. A movement pattern can be a sequence of movements.For example, a movement pattern can be used in which the control element is moved twice from the first sub-area to the second sub-area within a predetermined period of time, for example, within 1 second, and is then held in the second sub-area. The control element can be a finger actuation device with which a finger or thumb movement can be detected via a mechanism and / or sensor system. For example, the control element can be designed in the manner of a trigger.

[0043] The hand control can be configured such that the control element is subjected to a force in a first sub-range of a movement range of the control element such that the force increases linearly depending on the movement of the control element. An increase in the force can be proportional to a movement of the control element. The force can be applied by an urging component or a force device. The urging component can be configured in the manner described in other parts of this description or can be the urging component described elsewhere. The urging component can be configured to apply a force to the control element in the first sub-range. The urging component can have a spring. For example, a linear spring can be provided which applies a force to the control element in the first sub-range. The spring can be a compression spring.The spring can be a torsion spring. The spring can be a torsion spring.

[0044] The hand control can be configured such that the control element is subjected to a force in a second sub-range of the control element's movement range in a manner that differs from the force application in the first sub-range. In particular, the force application in the first sub-range differs from the force application in the second sub-range in such a way that the user can feel which sub-range the control element is currently in. For example, an additional spring can be provided that applies an additional spring force in the second sub-range to the spring described above, which also acts in the first sub-range. In this way, a significantly higher force is required to move the control element in the second sub-range.

[0045] The hand control can be configured in such a way that movement from the first sub-area to the second sub-area is only possible by applying increased force. In particular, the transition between the first sub-area and the second sub-area can be formed by a transition area in which the force increases, for example, abruptly, rather than linearly, depending on the movement of the control element. In this way, an obstacle is created in the movement area of ​​the control element that can be overcome by applying increased force, and which signals to the user a transition between the first sub-area and the second sub-area. This creates a pressure point that is tactilely perceptible to the user. To implement such a function, the hand control can have a force device, for example a click frog. The control element orThe input device is moved against a strip of spring steel, which can be bent by force until it is brought into a metastable state by buckling. This causes a sudden reversal, which may be accompanied by a cracking sound. When the force is reduced, the spring steel strip springs back.

[0046] The hand control can be configured such that a movement from the second sub-area into the first sub-area results in the termination of any functions triggered in the second sub-area.

[0047] The manual control can be set up in such a way that the motor power is reduced immediately as soon as the control element moves from the second sub-area into the first sub-area. The manual control can be set up in such a way that the motor power is only reduced when the control element, after moving from the second sub-area into the first sub-area, is subsequently moved in the first sub-area over a predetermined distance, for example 10% of the total distance of the first sub-area. In this way, it can be provided that a function triggered by moving the control element into the second sub-area can also be retained when the control element is moved from the second sub-area into the first sub-area and then held in an area of ​​the first sub-area adjacent to the second sub-area.In this way, a user can maintain a function triggered in the second sub-range without requiring greater force to hold the control element in the second sub-range. A further inventive concept relates to indirect control of a motor control value. With such indirect control of a motor control value, the movement of the input device can be at least partially decoupled from the direct control of the motor. Cruise control-like control of the motor control value can be realized. Instead of directly setting a motor control value depending on a position of the input device, a decrease and / or increase in the motor control value can be controlled. With such an embodiment, the input device can control an increment value. The increment value can indicate the speed of a change in the motor control value. In particular, the increment value can be a rate of change in output power.The increase value can change according to a predetermined characteristic curve which specifies the value of the increase value as a function of the position of the input device in the adjustment path. The characteristic curve can be designed such that in a predetermined plateau range of the adjustment path there is an increase value or a rate of change of zero. Above the plateau range, the increase factor increases with a given function (positive value). Below the plateau range, the increase factor decreases with a given function (negative value). An increase factor of 1 means a change in the motor control value by 1 per switching cycle. A switching cycle can be 1 ms, for example. With such a configuration, a new motor control value can be calculated by summing the current...

[0048] Motor control value and the product of the increase factor and switching cycles. If the input device is now moved beyond the plateau range, the motor control value is increased and a correspondingly higher power output is output. If the input device is then moved back into the plateau range, the previously calculated motor control value is retained. If the input device is moved below the plateau range, a new motor control value is calculated, which changes more or less depending on the position or setting of the input device, depending on how far the input device is moved out of the plateau range.In this way, in the manner of a cruise control, the power output of the engine can be reduced by positioning the input device on one side of the plateau range and increased by positioning the input device on the other side of the plateau range, and the power output then achieved can be maintained by positioning the input device in the plateau range. The plateau range can be provided in the adjustment path of the input device such that it is provided in the first sub-range and ends at a transition point from the first sub-range to the second sub-range. In this way, a user can hold the input device more easily in the plateau range because the plateau range thus has a stop on one side that can be overcome with increased force.Such an surmountable stop can also be provided on both sides of the plateau area, for example in such a way that the input device is automatically moved back into the plateau area as soon as the user no longer applies force to the input device.

[0049] The second sub-area can, for example, form a range of 5% to 10% of the movement range of the control element. The first sub-area and the second sub-area can form a first functional area and a second functional area. In the second functional area, the hand control can trigger an additional or different function. The hand control can be configured so that the second sub-area or the second functional area is available for or allows additional user inputs.

[0050] The system can be configured so that maximum motor power can always be accessed or triggered by moving the control element of the hand control into the second subrange. With such a configuration, the user can always access maximum motor power upon request. The hand control can be configured so that maximum motor power is always accessible.

[0051] In one embodiment, when the control element is located in the second sub-range, the power limit can be continuously increased until the full maximum power is output.

[0052] A specific power output can be triggered using the hand control. For example, a control signal for the motor can be calculated directly in the remote control based on the control element position and / or a movement pattern of the control element or input device and output to the control device. However, separate signals for the control element position and, if applicable, for switching based on a movement pattern or control element acceleration or for a recognized movement pattern can also be output to the control unit, and a control signal for the motor can be calculated in the control unit from these signals. The control unit can be provided in the hand control, in a buoyancy body or floating body of the hydrofoil watercraft, for example a board arrangement, or in a mast unit or mast arrangement of the hydrofoil watercraft.

[0053] In one embodiment, it can be provided that the hydrofoil watercraft has a wireless interface via which additional external control is possible in addition to the control by the user.

[0054] For example, the hydrofoil watercraft can be configured to allow control via an additional handheld controller or remote control. Such an additional handheld controller or remote control can also be implemented in software on a mobile device. For example, the additional handheld controller or remote control can be configured as a master controller, whose inputs or signals take precedence over user inputs on the user handheld controller. Such a master controller can be used, for example, by an instructor on the shore or on a boat to support a student in their learning process.

[0055] Those skilled in the art will be able to derive further features and advantages of the above-mentioned aspects and embodiments from the following description of exemplary embodiments, which, although not to be understood in a limiting sense, make reference to the accompanying drawings.

[0056] BRIEF DESCRIPTION OF THE DRAWINGS

[0057] The present invention will be further described in conjunction with the following drawing figures, wherein like reference numerals indicate like elements. Figure 1 shows a system for operating a hydrofoil watercraft according to one embodiment.

[0058] Figure 2 shows a perspective view of a hydrofoil watercraft according to one embodiment.

[0059] Figure 3 shows a perspective view of an integrated wing assembly according to one embodiment.

[0060] Figure 4 shows a schematic representation of a mast arrangement according to an embodiment.

[0061] Figure 5 shows a sectional view of the rear portion of the integrated wing assembly according to one embodiment.

[0062] Figure 6 shows a schematic representation of an attachment of a mast arrangement to a board arrangement according to an embodiment.

[0063] Figure 7 shows a sectional view of an upper end region of a mast arrangement according to an embodiment.

[0064] Figure 8 shows a schematic side view of a hand control for a hydrofoil watercraft.

[0065] Figure 9 shows a force curve (y-axis) as a function of the adjustment path (x-axis) of an input device of the hand control.

[0066] Figure 10 shows the course of a characteristic curve according to an embodiment in which an increase value or a rate of change is specified as a function of the position of an input device.

[0067] Figure 11 shows different characteristic curves or control curves for different speeds v1, v2, v3, which specify a relationship between an output power setpoint and an adjustment value of the input device.

[0068] Figure 12 shows a perspective view of an assembly with a mast assembly, a fuselage assembly and an air supply assembly.

[0069] Figure 13 shows a sectional view through the assembly of Figure 12.

[0070] All figures are only schematic representations of exemplary embodiments in which, in particular, distances and dimensional correlations are not shown to scale.

[0071] DETAILED DESCRIPTION OF EMBODIMENTS

[0072] The following detailed description is merely exemplary and is not intended to limit the application and uses. Furthermore, there is no intention to be bound by any theory presented in the preceding background description or brief description or in the following detailed description.

[0073] Figure 1 shows a perspective view of a hydrofoil watercraft 1 according to one embodiment. The hydrofoil watercraft 1 comprises a floating body, for example a board assembly 10, a mast assembly 50, and a hull assembly 100 coupled to the mast assembly 50.

[0074] The floating body, for example the board assembly 10, comprises a hull 11 designed to float on the water. For this purpose, the hull 11 comprises a lower portion 12 specifically designed for contact with water and an upper portion 13 designed to support or support a user. The upper portion may comprise a support surface 14 that allows the user to lie prone, sit, kneel, or stand on the floating body, for example the board assembly 10, when riding on the hydrofoil watercraft 1. A removable access panel 15 is arranged in the support surface 14. The access panel 15 may be designed as a lid. The access panel 15 covers an access opening to an interior of the floating body, for example the board assembly 10.The access panel 15 is watertightly coupled to the hull body 11 to seal the interior against water ingress. Although not shown in the drawings, the interior can accommodate electrical components such as a power supply, for example a battery. Alternatively or additionally, the battery can be formed integrally with the access panel 15 or the cover, or the battery can form the access panel 15 or the cover. In such a configuration, only the battery is positioned in the access opening and locked to the floating body. Furthermore, a control unit can be provided, which is powered by the battery and includes a wireless receiving unit. The control unit and / or the power supply can be coupled to the hull arrangement 100 to supply the hull arrangement with power and / or control signals, in particular to operate an electric motor arranged in the hull arrangement 100.

[0075] The mast assembly 50 is rigidly coupled to the board assembly 10 at the lower portion 12 of the hull 11. In one embodiment, the mast assembly 50 is detachably attached to the board assembly 10 to allow space-saving stowage of the hydrofoil watercraft 1. For this purpose, the mast assembly 50 may comprise a board assembly attachment portion 52, also called a mast plate. The board assembly attachment portion 52 is configured to cooperate with a mast assembly coupling portion 19 disposed at the lower portion 12 of the hull 11. The board assembly attachment portion 52 may comprise a mounting flange 57 integrated into the hull 11. The board assembly attachment portion 52 may comprise an insertion portion or projection.The mast assembly coupling portion 19 on the board assembly 10 may include a mounting recess for receiving the board assembly attachment portion 52. Accordingly, the board assembly attachment portion 52 may be inserted into the mounting recess disposed in the lower portion 12 of the fuselage body 11 of the board assembly 10 to couple the mast assembly 50 to the board assembly 10. The board assembly attachment portion 52 may be configured to be positively coupled to the board assembly 10. For example, the board assembly attachment portion 52 and the board assembly 10 may be configured to be bolted together. For this purpose, the mast assembly coupling portion of the board assembly 10 may include a mounting flange 57 that provides suitable support for fastening devices such as screws.The mounting flange 57 can be part of a mast plate 58, which can accommodate a mast end on one side and support the control unit 16 on the other. The mast plate 58 has a recess in which the mast end is received. To prevent heat transfer from the mast plate 58 to the mast, an insulator 59 is provided on the mast plate in the recess. The mast plate 58 can be screwed to the upper end of the mast using screws 60. The mast plate 58 can be attached to the upper end of the mast in such a way that, at least in some areas, a gap is created between these two components, providing a passage for water.

[0076] The mast assembly 50 further includes a fuselage assembly attachment portion 54. According to one embodiment, the fuselage assembly attachment portion 54 may be configured to cooperate with a mast assembly coupling portion 106 disposed on the fuselage assembly 100. The mast assembly coupling portion 106 may include a mounting recess 107 and may be configured to receive the fuselage assembly attachment portion 54 therein. According to the embodiment, the mounting recess 107 is disposed in an upper portion of the fuselage assembly 100 such that, according to the embodiment, the fuselage assembly 100 is coupled to an end portion 53 of the mast assembly 50. Accordingly, the hull assembly 100 may be coupled to one end portion 53 of the mast assembly 50, and the board assembly 10 may be coupled to the mast assembly 50 at the other, opposite end portion 51 of the mast assembly 50.The hull arrangement 100 is thus coupled to the board arrangement 10 by means of the mast arrangement 50. The floating body, for example the board arrangement 10, can comprise a control unit 16. The control unit 16 can be coupled to an energy source, for example a battery 20. The battery 20 can be removably accommodated in an interior of the floating body, for example the board arrangement 10, or a cavity in the floating body, for example in the board arrangement 10, and can be removed for charging purposes. The board arrangement 10 can comprise a first receiving unit 17. The first receiving unit 17 can be coupled to the control unit 16. The first receiving unit 17 can be configured to wirelessly receive a control signal from a wireless remote control 21.The remote control can be a handheld remote control 21 held by a user and used by the user to control the hydrofoil watercraft 1, for example, to accelerate and decelerate it. The on-board arrangement 10 can comprise a second receiving unit 18. The second receiving unit 18 can be coupled to the control unit 16. The second receiving unit 18 can be configured to wirelessly receive a control signal from the remote control 21. Accordingly, an embodiment can be provided in which two receiving units 17, 18 are present. Each receiving unit 17, 18 can be a transceiver. Both receiving units 17, 18 can be configured to receive a signal from the remote control 21. The control unit 16 can be configured to receive the control signal from the remote control 21 via the receiving unit 17, 18 at which the signal strength is highest.In some embodiments, the remote control can also be connected to the control unit 16 via a cable. According to one embodiment, a receiving unit can be provided in the power supply 20, for example, in the battery. A receiving device can also be configured to send signals and / or data to the remote control. According to one embodiment, in an arrangement in which multiple receiving units are provided, at least two of the receiving units can communicate with each other. In one embodiment, the remote control can be permanently attached to the hydrofoil watercraft or removably attached thereto. In this respect, instead of the remote control, an operating unit or hand control arranged on the hydrofoil watercraft can be provided. For example, the hand control or operating unit can be provided on a holding structure to which a user can hold on while operating the hydrofoil watercraft.The holding structure can have a handle. For example, an arrangement can be provided in which the input device is provided on a handle so that the user can operate the input device with the hand with which they hold on to the handle. Such a hand control or operating unit can have the same functions described in connection with the remote control or hand control. However, in such an arrangement, individual components can be provided spatially separate from one another, for example the input device on a handle and the other components of the hand control at a different location, for example on an upper end section of a support element which supports the handle on the floating body.

[0077] The control unit 16 and / or the power supply 20 can be coupled to the fuselage assembly 100 to supply the fuselage assembly with power and / or control signals, in particular to operate an electric motor 205 arranged in the fuselage assembly 100. For this purpose, an electrical line 56 can be provided, which, for example, couples the control unit 16 to the fuselage assembly.

[0078] The fuselage assembly 100 according to the exemplary embodiment includes a forward portion 101 and an aft portion 140. The forward portion 101 includes a forward section 102, a midsection 103, and an aft section 104. The forward section includes a wing attachment section 105, the midsection 103 includes a mast assembly attachment section 106, and the aft section 104 includes a coupling section 108 for coupling the aft portion 140 to the forward portion 101. The forward portion 101 may further include a receiving section 109 for receiving additional elements therein, such as elements of a propulsion unit and / or elements of a power supply. The receiving section 109 may additionally or alternatively be configured to receive a portion of the aft portion 140. The front portion 101 may comprise a fuselage body or a housing 110.The housing 110 can be formed as a single part and can be aerodynamically optimized with a tip end portion at the front section 102. In the middle section 103 and in the rear section 104, the housing 110 can be tubular, for example, hollow cylindrical and / or elliptical. In general, however, other shapes and configurations are also possible, including, for example, a configuration in which the shape of an outer circumference of the housing differs from the shape of an inner circumference of the housing. For example, the outer circumference can be triangular, in particular with rounded corners, and the inner circumference of the housing can be rounded, for example, circular.

[0079] The wing attachment section 105 can be formed by a recess arranged in the front section 102, making it possible to at least partially accommodate a wing 112, in particular a front wing, therein. In this way, the wing 112 can be prevented from protruding completely from the housing, so that the use of such a wing 112 does not significantly increase an external dimension, for example, a height dimension of the fuselage assembly. Openings 111 can be formed in the housing 110 in the rear section 104. The openings 111 can be provided for coupling purposes, for example, for inserting and receiving fastening elements 150 for coupling the rear portion 140 of the fuselage assembly 100 to the front portion 101 of the fuselage assembly 100.Accordingly, as shown in the figures, the fuselage assembly may comprise a two-piece construction in which the rear portion 140 and the front portion 101 may be releasably coupled together.

[0080] The mast assembly mounting section 106 is configured to couple the mast assembly 50 to the fuselage assembly 100. The mast assembly mounting section 106 may include a mounting recess 107 for receiving at least a portion of the fuselage assembly mounting portion 54 of the mast assembly 50.

[0081] The wing 112 can be removably mounted on the wing attachment section 105 and is configured to generate a lift force during the movement of the hydrofoil watercraft 1 in the water. As previously indicated, the wing 112 according to the embodiment can also be referred to as a front wing, since—according to the exemplary embodiment—the wing 112 is arranged on the front section 102 of the hull assembly 100. The wing 112 can comprise various shapes and sizes depending on the properties to be achieved. For example, the wing 112 can comprise a shape that generates a high lift force even at low speeds, or can comprise a shape that requires a higher speed to generate a desired lift force.

[0082] The rear portion 140 includes a coupling section configured to couple the rear portion 140 to the front portion 101. The coupling section includes a coupling flange 142 configured to couple to the coupling section 108 of the front portion 101 of the fuselage assembly 100. The coupling flange may comprise a cylindrical portion having an outer peripheral surface. The outer peripheral surface may be sized according to an inner peripheral surface in the coupling section 108. Both peripheral surfaces may be arranged parallel to each other and may be arranged to extend parallel to a longitudinal central axis A1 of the fuselage assembly 100. In particular, the outer diameter of the outer peripheral surface may correspond to the inner diameter of the inner peripheral surface.In the coupling flange 142, engagement portions for fasteners may be arranged, for example, at equal intervals around the longitudinal center axis A1. For example, the engagement portions may be threaded openings suitable for receiving screw fasteners, such as screws, which can be used to couple the front portion 101 and the rear portion 140 by inserting them through the openings 111 and screwing them into the threaded openings.

[0083] The coupling section may further comprise a receiving section 146 configured to be received in the front portion 101 of the fuselage assembly 100. The receiving section may be hollow-cylindrical with a receiving space suitable for receiving an element of a drive train, for example, a coupling element for coupling an electric motor to a drive shaft. The receiving section 146 is arranged on one side of the coupling flange 142 and extends from this side. A fastening flange is arranged at a free end of the receiving section 146, which, according to the embodiment, provides an annular fastening surface that may extend around the longitudinal center axis A1 and in a plane perpendicular to the longitudinal center axis A1.The mounting flange provides support for a drive element, such as an electric motor, particularly in such a way that the drive element can be mounted on an outer side of the receiving section. For this purpose, the mounting flange may comprise mounting openings arranged on the mounting flange. In some embodiments, the receiving section may be omitted. The electric motor may be arranged and secured in the forward section 101 of the fuselage assembly 100 such that no fastening option, such as the aforementioned mounting flange, is required for mounting the electric motor to the docking section. For example, the electric motor may be pressed into the forward section 101.

[0084] In addition to the above, or alternatively, the rear portion 140 may include a drive section 160. The drive section 160 may extend from the above-mentioned coupling flange 142 on one axial side such that it extends along the longitudinal center axis A1, for example, on the side of the coupling flange opposite the side on which the receiving section is located.

[0085] The drive section 160 can define a flow channel 161 for water, in which water can be accelerated to generate a driving force. The flow channel 161 can be annular, in particular with an annular or elliptical inlet, and such that water flows through it, as indicated by dashed arrows in Figure 5. The drive section 160 can comprise an inlet section 162, an intermediate section 163, and an outlet section 164. The inlet section 162 can be designed to allow radial entry of water into the drive section 160. According to the present disclosure, “radial entry” is to be understood as a direction in which the water flow, at least upon entry into the flow channel 161, is directed at least partially transversely or obliquely to the longitudinal center axis A1 of the hull assembly 100 and thus has a directional component in the radial direction, more precisely, in the direction of the longitudinal center axis A1.However, it is also possible to provide an inlet section designed to allow axial entry of water into the drive section. For example, the annular flow channel can be configured such that a radial outer wall and / or a radial inner wall extend parallel to the longitudinal center axis at least in the inlet section. Accordingly, the water entering such a flow channel flows parallel to the longitudinal center axis at least in the inlet section.

[0086] The flow channel 161 may be defined between an outer housing portion 170 and an inner housing portion 180.

[0087] The outer housing section 170 may be defined by a drive device receiving section 171 and a nozzle section 172. The drive device receiving section 171 is configured to receive a drive device 200, for example, to surround or enclose the drive device 200. The drive device receiving section 171 may comprise the shape of a hollow body of revolution, for example, tubular or similar to a hollow cylindrical section, with the difference that the inner wall surface and / or the outer surface of the hollow body may extend at least partially obliquely with respect to a central axis and / or may be at least partially curved in the longitudinal direction and non-straight.

[0088] The inner housing section 180 may be arranged at least partially coaxially within the outer housing section 170. Accordingly, the flow channel 161 may be formed between an outer surface section 181 of the inner housing section 180 and an inner surface section 173 of the outer housing section 170. According to the embodiment, an inlet opening 178 is defined between an upstream end portion of the outer housing section 180 and the outer surface section 181 of the inner housing section 180. In other words, the inner housing section 180 is arranged such that a portion of the outer housing section 170 and a portion of the inner housing section 180 overlap each other in the longitudinal direction (the x-direction in the drawings) of the fuselage assembly 100, thereby forming a portion of the flow channel 161 therebetween.

[0089] The inner housing portion 180 includes a front end portion 182 and a rear end portion 183. The front end portion 182 is coupled to or integrally formed with the coupling flange 142. An outer circumferential dimension, for example, the diameter, of the inner housing portion 180 at the front end portion 182 is larger than the outer circumferential dimension at the rear end portion 183. Accordingly, the outer circumference of the inner housing portion 180 may be tapered between the front end portion 182 and the rear end portion 183, and may be tapered in particular toward the rear end portion 183. The rear end portion 183 is configured to support the drive device 200, for example, the impeller 201. The rear end portion 183 may be configured to receive a rear bearing 202 to rotatably support the drive device 200 therein.

[0090] The drive device 200, in particular the impeller 201, can be operatively connected to a drive device, such as an electric motor, by means of a drive shaft 203. In one embodiment, the drive shaft 203 can be mounted in the rear portion 140 of the fuselage assembly 100 by means of a rear bearing 202 and a front bearing 204, and such that a rear end portion 205 of the drive shaft 203 protrudes from the rear end portion 183. The front bearing 204 can be supported in the coupling flange 142. The rear bearing 202 can be arranged in and supported by the rear end portion 183. The drive device 200 is fixedly and integrally rotatably mounted on the rear end portion 205 of the drive shaft 203.

[0091] The outer housing section 170 can be coupled to the inner housing section 180 by means of struts 190 on an upstream side of the outer housing section 170, or in other words, on the inlet side. The struts 190 can be arranged at equal intervals around the longitudinal center axis A1. Each strut 190 can be designed for aerodynamic optimization. In this way, turbulence of the water flowing past the struts is reduced.

[0092] The nozzle section 172 may be removably mounted on a downstream or rearward end portion of the drive device receiving section 171. The nozzle section 172 may include or define an outlet opening 191 at its downstream portion. The nozzle section 172 may include a stator section or stator 174 comprising a plurality of stationary guide vanes. In some embodiments, however, the stator 174 may be disposed within the drive device receiving section 171. In other words, the stator 174 need not be disposed within the nozzle section 172, but may also be disposed at other suitable positions within the flow channel 161, or upstream or downstream of the flow channel. It is also possible to dispose the stator 174 upstream of the drive device. Accordingly, a reverse arrangement may also be realized, in which the water first flows through the stator and then passes the impeller.In the embodiment, the stator 174 is arranged downstream of the drive device 200. The stator section 173 can be configured such that a user cannot insert a finger into the space between the guide vanes 175. In other words, the distance between adjacent guide vanes 175 can be dimensioned such that reaching into it is not possible at all or only possible to the extent that the drive device 200 can neither be reached nor touched. Accordingly, the distance between the guide vanes 175 can be determined depending on a distance between the stator 174 and the drive device 200.

[0093] In some embodiments, the fuselage assembly 100 may include a tail unit 300. In the embodiment, the tail unit 300 is arranged in the rear section 140 of the fuselage assembly 100. The tail unit 300 may also be referred to as a stabilizing section and, according to the embodiment, includes a stabilizing element 301. According to one example, the stabilizing element 301 includes a wing 302, more specifically, a horizontal wing, as shown, for example, in Figure 3. Additionally or alternatively, a vertical wing may also be present.

[0094] In the embodiments shown, the hull assembly 100 is coupled to an end section 53 of the mast assembly 50 such that the hull assembly 100 forms an end section of the hydrofoil watercraft 1. In other words, according to the embodiment shown in Figure 1, the mast assembly 50 extends between the hull assembly 100 and the board assembly 10. However, it is also possible to couple the hull assembly 100 in a middle section 55 between the end sections 51, 53 of the mast assembly 50. In this way, the hull assembly 100 can be coupled to the mast assembly 50 at a position between the end section 53 and the end section 51. In this way, the end section 53 can be available for the attachment of another element, such as a generic hydrofoil assembly or a wing.

[0095] In the embodiments shown in the figures, the fuselage assembly 100 combines a propulsion assembly and a wing assembly. In other words, the propulsion assembly is integrated into the wing assembly 100. However, it is also possible to provide a separate generic wing assembly and a separate propulsion assembly embodied by a fuselage assembly, as previously described. For example, a configuration may be provided in which the fuselage assembly, which does not include elements such as front wings and tail units, is coupled to the mast assembly 50 at a portion between a generic wing assembly and the board assembly 10.

[0096] The hydrofoil watercraft 1 may include one or more of the features described above and may be a modification of one of the hydrofoil watercraft 1 described above that includes one or more of the features described below.

[0097] According to a further aspect, the hydrofoil watercraft may include an improved cooling arrangement 600 for cooling heat-generating components, including, for example, the control unit or engine controller 16 and / or the battery. The cooling arrangement 600 may be a passive cooling arrangement. The cooling arrangement 600 may include a piping system 601 that is in fluid communication with an inlet opening 602a, 602b and an outlet opening 603 and allows water to enter the piping system through the inlet opening and exit the piping system through the outlet opening. The piping system 601 may be coupled to, or may include, a heat exchanger or heat transfer element that is thermally coupled to one or more heat-generating components.

[0098] According to one embodiment, a mast assembly 50 includes a mast, a coupling portion 52 for mounting the mast to a board assembly, and a control unit 16 provided in an upper end portion of the mast assembly 50. The mast assembly includes a water cooling assembly 600 for the control unit that is fully integrated into the mast assembly. If the mast assembly 50 is disassembled from the board assembly 10, the water cooling assembly 600 is also completely removed from the board assembly. With such a configuration, no openings or lines are required that would necessitate water transport into the interior of the board assembly 10.The water cooling arrangement 600 is designed such that water is conveyed from a part of the mast arrangement 50 or a hull arrangement 100 arranged thereon that is in the water during travel to the control unit 16 provided in the upper end section of the mast arrangement 50 for cooling purposes. Heat exchange between the water and the control unit takes place in the mast arrangement 50, for example, through contact between water in a space 61 formed in the mast arrangement 50 or mast plate 58 and the control unit 16. Water can thus flow into the mast plate 58 to the control unit 16, thus coming into direct contact with the control unit, for example, an ESC block. The mast plate 58 can also function as a heat exchanger. The mast can have a channel 62 for conveying water.This channel 62 can be open upwards, i.e., in the direction of the mast plate 58, and in some embodiments can additionally serve to accommodate an electrical line 56. It is thus possible to guide an electrical line and water in the channel 62. As already described elsewhere, the mast can be accommodated in the mast plate in such a way that a gap remains between the mast end and the mast plate 58, which allows water to pass through. Water that is transported upwards through the channel 62 into or onto the mast plate can then be drained from there via the gap. An outlet 603 can thus be created between the upper mast end and the mast plate. Alternatively, it is possible to create a passage in the mast plate 58 or in the mast in order to drain water after heat exchange has taken place.

[0099] The water cooling arrangement can be passive and have an inlet 602a on the mast and / or an inlet 602b on a hull assembly 100. The inlet can be open in the forward direction of travel of the mast. For example, an inlet opening 602b can be provided on a front section 101 of the hull assembly. In this way, water can flow into the inlet during a travel movement, and the resulting dynamic pressure transports water upwards to the control unit. A water quantity or water flow rate can be adjusted via a line cross-section or inlet opening cross-section.

[0100] The hydrofoil watercraft 1 can have a control arrangement 900 that can be used as a flight altitude limitation arrangement. The control arrangement 900 has a flow-around body. The flow-around body can have a flow profile or be designed as a flow profile. The flow-around body can be or have a hydrofoil 112, a tail unit or stabilizing element 301, for example in the form of a wing 302, or a propulsion device 200, such as a propeller or an impeller. Alternatively, a body that is only partially flowed around can also be considered a flow-around body. Such a flow-around body can be a floating body, for example, a board or a boat hull.

[0101] The control arrangement further comprises an air supply arrangement configured to provide air such that it at least partially reaches the flow-around body. The air supply arrangement comprises an inlet 904 fluidly connected to an outlet via a line arrangement 903. The inlet 904 is provided closer to the floating body 10 than the outlet 901. In the arrangement shown in Figure 12, the outlet 901 is provided in a flow channel 161 slightly upstream of a position at which an impeller is arranged. More precisely, the outlet is arranged in an effective range of the impeller, so that when the impeller is in operation, a negative pressure is generated in the line arrangement 903. Therefore, a fluid is sucked in via the inlet 904 and discharged to the impeller via the outlet. If the inlet is underwater, the sucked-in fluid is water.However, if the inlet is located above the water surface, air is drawn in through the inlet and fed to the impeller. This leads to a reduction in the thrust achievable by the impeller, which changes the speed of the hydrofoil watercraft 1 and, as a result, reduces the lift force on the wing. This leads to a reduction in altitude until the inlet is again below the water surface and no more air is drawn in. The inlet 904 is provided on a side surface of the mast assembly 50 and is fluidly connected to the outlet 901 via a line arrangement 903, which may consist of one or more lines.

[0102] In Figure 4, the outlet 901 is optional and is provided, for example, to supply air in front of a tail unit or stabilizing element 301.

[0103] In the arrangement shown in Figure 2, the line 903 is fully integrated and extends into the mast assembly 50 and the hull assembly 100. In contrast, in the arrangement shown in Figures 12 and 13, a portion of the line assembly 903 is provided on the hull or on the outside, here the top, of the hull assembly 100 and extends into the flow channel 161. The portion of the line assembly 903 provided on the hull assembly can, for example, have an opening 908 configured to receive a fastening element 150, for example a screw. The opening 908 can be provided such that it is positioned over the opening 111 so that a screw used to fix the rear section 140 of the hull assembly 100 to the front section 101 can pass through. In this respect, the arrangement is configured such that it can be retrofitted to an existing hull assembly 100.According to the embodiment shown, the flight altitude limiting arrangement 900 is configured to supply air to the inlet side of a propulsion device 200 of the hydrofoil watercraft 1 when a distance between a floating body, for example a board 10, of the hydrofoil watercraft 1 and the water surface is greater than a predetermined maximum distance, in order to deliberately induce a drop in the delivery power in the propulsion device 200, thereby reducing the speed of the hydrofoil watercraft 1 and the distance between the board 10 and the water surface. The flight altitude limiting arrangement 900 can have one or more outlets 901 provided in an intake region of the propulsion device 200. Air can be supplied to the outlets 901 via one or more lines.The lines can be provided externally on components of the hydrofoil vessel 1, for example, on the hull assembly 100 or the mast assembly 50, or integrated into such components. For example, in one arrangement, air can be supplied to the outlets 901 via one or more lines 902 in the hull assembly 100 and one or more lines 903 in the mast assembly 50. The outlets 901 can be connected to one or more inlets 904, 905, 906 via this line or lines 902, 903. For example, inlets 904, 905, 906 can be provided one above the other on the mast assembly 50, for example, on a rear side of the mast. These inlets can be individually switched on or blocked with an object so that only a desired number of inlets or only a predetermined inlet can let in, for example, suck in, air.By selecting the inlets, in particular the number of inlets and / or the position of the inlet(s), it is possible to determine at what depth the mast assembly is immersed in the water or at what distance between the board and the water surface the inlet is located above the water surface and can admit or suck in air. The lowest inlet 904 can determine the maximum flying height of the floating body, for example the board assembly 10, above the water surface. A throttle device or a control valve 907 can be provided in the lines to influence or adjust an air flow and / or to allow or prevent an air flow. However, one or more inlets can also be provided at other positions. For example, it is conceivable to provide an air supply device on the housing section 170, which carries one inlet or several inlets. The air supply device can be an air intake device.The air supply device can be designed in the manner of a snorkel or hollow mast. The air supply device can be designed as a directional stabilizer, for example, in the form of a fin. The air supply device can, for example, extend upwardly from an upper region of the housing section 170. The air supply device can extend at least partially or completely parallel to the mast unit or mast arrangement 50.

[0104] According to a further aspect, an air flow in the lines can be detected, and based on the detected air flow in the lines, a signal can be used to control or regulate the hydrofoil watercraft 1. For example, the signal can be fed to the control unit, and the control unit can control the motor, for example, activate or deactivate it, depending on the detected air flow. In one embodiment, the control unit can be configured to switch off the motor and / or transfer the hydrofoil watercraft 1 to a predetermined operating mode when at least one characteristic of the air flow, for example, the air pressure, the flow velocity, the volume flow, the mass flow, and / or the air temperature, exceeds or falls below a predetermined threshold value.The predetermined operating mode can be a surfing mode, in which the user rides a wave and therefore requires no propulsion. Accordingly, in surfing mode, for example, the inlet section 162 can be closed, for example, by means of adjustable flaps, to prevent water from flowing through the flow channel 161.

[0105] According to a further aspect, air supply events and / or air intake events can be detected, for example counted, in the air supply device. An air supply event is an event in which air is supplied to the drive device 200 via the air supply device. For example, the air supply device can be configured to actively supply air, for example, to supply air upstream of the drive device 200 such that it enters the flow channel 161. The air supply device can also be configured to allow passive air supply by enabling air intake. The hydrofoil watercraft 1 can be configured to be controlled based on one detected event or on multiple detected events.The occurrence of an event can be detected, for example, via an engine data analysis, via the detection of cavitation and / or via a sensor in an air line of the air supply device or an operating state of the air supply device. The events can alternatively or additionally be recorded over a predetermined period of time. For example, the events can be determined per trip. The number of events can be used to determine the driver's level and, based on the determined result, to change an operating setting of the hydrofoil watercraft 1 in order to assist the user during the trip. For example, a high number of events can indicate that the driver is a novice.

[0106] The air supply device can be configured to pressurize air or to provide compressed air and supply it to the drive device. The air supply device can have a pump arrangement. The air supply device can be configured to provide air at a location on the mast arrangement 50 or the hull arrangement 100 such that it can reach the drive arrangement. For this purpose, it is not necessary for an outlet to be provided in the flow channel 161, as shown, for example, in Fig. 5. Rather, the outlet can be provided at any location past which water flows, which is sucked into the flow channel 161 during operation of the drive device 200. It is conceivable to provide an outlet on the housing 110, for example, in a central section 103.It is also conceivable to provide an outlet at a lower end portion of the mast arrangement 50 if the mast arrangement is arranged in front of the drive device 200 or in front of the flow channel 161 in the direction of travel.

[0107] The air supply device can alternatively be designed such that air intake occurs by generating a negative pressure at the outlet by the drive device 200. The outlet can thus be provided in the effective range of the drive device 200, i.e., in a region in which a negative pressure can arise during operation of the drive device 200, for example, in the flow channel 161 upstream of the drive device 200.

[0108] According to a further aspect, the hydrofoil watercraft, which may have one or more features described herein, is controllable by a hand controller or remote control 21. The remote control or hand controller may be configured as previously described in this disclosure and may additionally or alternatively comprise a means for receiving and / or transmitting information.

[0109] According to a further aspect, the hydrofoil vessel may comprise a position detection unit or an interface for coupling with a mobile device comprising a position detection unit. The position detection unit may comprise one or more GNSS signal receivers and may, for example, be integrated into one of the receiving units 17, 18, as previously described. Alternatively or additionally, the position detection unit or another position detection unit may be provided in the remote control.

[0110] Figure 8 shows a schematic side view of a hand control 800 for a hydrofoil watercraft 1.

[0111] In more detail, Figure 8 shows a hand control 800 for a hydrofoil watercraft 1 with a housing 801 for protection against water and with a user-operable input device 802, for example, configured as a lever. The input device 802 is movable along an adjustment path x, which is limited by a first end position x1 and a second end position x2.

[0112] Furthermore, the hand control 800 can have a urging component or a force device 803, with which the input device 802 is subjected to a force in the direction of the first end position x1, such that a force must be applied by a user to move the input device 802 along the adjustment path x toward the second end position x2. The force device 803 can be configured to apply a constant force to the input device 802 along the adjustment path x. The force device 803 can be configured to apply a variable force to the input device 802 along the adjustment path x. The force can be varied depending on other system variables in order to provide the user with mechanical feedback on events. The force device 803 can be configured to provide or generate haptic feedback when steering the hydrofoil water sports vehicle 1.The force device 803 can be configured to change the movement resistance of the input device 802 and / or to change and / or limit a range of movement or the adjustment path.

[0113] The adjustment path x has an intermediate position x3 in order to divide the adjustment path x into a first adjustment range y1 and a second adjustment range y2. Furthermore, the force device 803 can be configured and designed such that the force before the intermediate position x3, against which the input device 802 is movable in the first adjustment range y1, is different from the force after the intermediate position x3, against which the input device 802 is movable in the second adjustment range y2.

[0114] Specifically, the force device 803 is configured and designed such that the force before the intermediate position x3, against which the input device 802 is movable in the first adjustment range y1, is less than the force after the intermediate position x3, against which the input device 802 is movable in the second adjustment range y2.

[0115] In other words, the force device 803 is set up and designed such that the force required to overcome the intermediate position x3 is greater than the force against which the input device 802 is movable in the first adjustment range y1. Thus, a haptically / tactilely recognizable division into trigger movement ranges or adjustment ranges y1, y2 is possible, with the resistance changing across the different adjustment ranges y1, y2. Expressed again in other words, the force device 803 can be set up and designed such that the force increases from the first end position x1 toward the intermediate position x3, and that the force initially increases abruptly from the intermediate position x3 toward the second end position x2 and then decreases. Such an abrupt increase can be implemented by a mechanism such as a clicker, which acts or begins to act at the intermediate position x3.

[0116] Furthermore, the force device 803 is arranged and designed such that the force for overcoming the intermediate position x3 from the first end position x1 in the direction of the second end position x2 is greater than the force for overcoming the intermediate position x3 from the second end position x2 in the direction of the first end position x1.

[0117] The force against which the input device 802 is movable along the adjustment path x and in the first adjustment range y1 increases along the adjustment path x and in the direction of the intermediate position x3.

[0118] Furthermore, the force against which the input device 802 is movable along the adjustment path x and in the second adjustment range y2 increases along the adjustment path x and in the direction of the second end position x2.

[0119] Furthermore, Figure 8 shows that the input device 802 is a variable or adjustable throttle lever for changing the power output of an engine of a hydrofoil watercraft 1.

[0120] The hand control 800 comprises a detection device 804 which detects the position of the input device 802 along the adjustment path x.

[0121] The hand controller 800 is configured and designed to output a signal S depending on the detected position of the input device 802. The signal S can be output wirelessly (as shown) or via cable. Using this signal, the power of an engine of a hydrofoil watercraft 1, as shown, for example, in Figures 1 and 2, can be changed. Alternatively or additionally, the speed and / or torque of the engine can be changed based on the signal.

[0122] According to Figure 8, the hand control 800 comprises a control device 805 which processes a signal S1 from the detection device 804 relating to the position of the input device 802 in order to control or regulate the power of a motor, e.g. an electric motor, of a hydrofoil watercraft 1 in accordance with the detected position of the input device 802.

[0123] The control device 805 is configured and designed to increase a starting value at the first end position x1 of the first adjustment range y1 by a predefined value upon overcoming the intermediate position x3 or upon reaching the second adjustment range y2, so that a power limitation for an engine of a hydrofoil watercraft 1 can be changed or increased.

[0124] Furthermore, the control device 805 is configured and designed to provide the power range between 100% of the available power of an engine of a hydrofoil watercraft 1 and the power at the intermediate position x3 in the second adjustment range y2 upon overcoming the intermediate position x3 or upon reaching the second adjustment range y2 in the second adjustment range y2. Thus, the complete power of an engine of a hydrofoil watercraft 1 can be accessed along the adjustment path x.

[0125] According to the example of Figure 8, the force device 803 comprises a spring (not shown).

[0126] Furthermore, the force device 803 can have a variably adjustable torque generating device 803A, with which a force can be variably applied to the input device 803, acting along the adjustment path x and in the direction of the first end position x1. As shown in Figure 9, the force device 803 is configured and designed such that a force can be generated that increases in the first adjustment range y1.

[0127] The variably adjustable torque generating device 803A is an electric motor and is configured and designed such that a force can be generated at the intermediate position x3 which is greater than a force before and after the intermediate position x3.

[0128] Furthermore, with regard to Figure 9, it can be noted that the variably adjustable torque generating device 803A is configured and designed such that a force can be generated which is different from the force for overcoming the intermediate position x3 before the intermediate position x3.

[0129] More precisely, the force to overcome the intermediate position x3 is different from the force after the intermediate position x3 and increases towards the second end position x2, whereby the force before the intermediate position x3 is different from the force after the intermediate position x3.

[0130] In other words, according to Figure 9, the variably adjustable torque generating device 803A is configured and designed such that a force can be generated against which the input device 802 is movable in the first adjustment range y1, is smaller than the force after the intermediate position x3 against which the input device 802 is movable in the second adjustment range y2.

[0131] According to Figure 9, the force increases linearly in the first adjustment range y1 and non-linearly in the second adjustment range y2.

[0132] Furthermore, the control device 805 is configured and designed such that the power of an engine of a hydrofoil watercraft 1 is automatically reduced upon exceeding the intermediate position x3 in the direction of the first adjustment range y1, wherein the power of an engine of a hydrofoil watercraft 1 can be automatically reduced linearly. Furthermore, the control device 805 can be configured and designed to reduce the power of an engine of a hydrofoil watercraft 1 as soon as the input device 802 has exceeded a determinable distance from the intermediate position x3, wherein the determinable distance can be, for example, 5, 10, or 20% of the adjustment path x in the first adjustment range y1.

[0133] According to Figure 8, the hand control 800 has an optional feedback device 806, with which the intermediate position x3 is recognizable to a user. The feedback device 806 is configured and designed to generate an audible sound and / or a noticeable vibration. The feedback device 806 can alternatively or additionally be configured to output an optical signal. For example, a visual display can be provided to inform the user. In general, the feedback device 806 can be configured to generate an acoustic, optical, and / or haptic signal. The feedback device 806 can also be provided at another location on the hydrofoil watercraft, for example, on a buoyancy body or board of the hydrofoil watercraft.

[0134] The above arrangements are described in part with reference to a hydrofoil watercraft having a board or board assembly. However, the application of the above teachings is not limited to a board or board assembly; rather, the above disclosures can generally be used in combination with other types of floating bodies or buoyancy bodies.

[0135] It should be noted that a hydrofoil watercraft can be motorized or unmotorized. However, certain functions or arrangements are only possible with motorized hydrofoil watercraft. A watercraft can essentially be any type of vehicle that can be moved on the water, for example a surfboard, a boat, a sailboat, a kiteboard, a stand-up paddleboard, a surffoil, etc. The air supply device can additionally or alternatively be designed to supply air to the floating body or to introduce air between the underside of the floating body and the water in order to reduce water resistance. In this way, the speed can be controlled and the reaction forces of the overall system can be changed. For example, the planing of the floating body can be improved, allowing it to lift off the water surface more quickly.Such an air supply device can have outlets on the underside of the floating body. A plurality of outlets can be distributed across the underside of the floating body. It can be provided that the outlets can be controlled in specific areas, so that air is only released in specific areas where it is required, in particular in areas where contact with water exists or is immediately expected. The air supply can be actively triggered by a user input, for example, by a corresponding input on a hand control. Alternatively or additionally, the air supply can be triggered by a sensor, for example, based on information from a gyro sensor, an image sensor, a laser scanner, or a capacitive sensor.

[0136] With the above air supply arrangements, air can be discharged via an outlet continuously and / or uniformly over a predetermined period of time, for example, with a temporally constant volume flow. However, it is also possible to discharge air in a pulsating manner. The air can be compressed air. A device for pressurizing the air can be provided, for example, a compressor or a pump. Alternatively or additionally, a pressure accumulator can be provided, for example, in the form of a gas cartridge. It is possible to suitably combine different air supply devices. The separation effect achievable by the air can be realized in a drag-reducing manner by a suitable topology of the float-water contact surface.

[0137] Finally, it should be noted that terms such as "comprising" or the like are not intended to exclude the provision of additional elements or steps. Furthermore, it should be noted that "a" does not exclude the plural. Moreover, features described in connection with the various embodiments may be combined in any desired manner. Furthermore, it should be noted that the reference numerals in the claims are not to be understood as limiting the scope of the claims. Furthermore, while at least one exemplary embodiment has been presented in the foregoing summary and detailed description, it should be understood that a wide variety of variations exist.

[0138] It should be understood that the exemplary embodiment or exemplary embodiments are merely examples and are not intended to limit the scope, applicability, or configuration in any way. Rather, the foregoing summary and detailed description provide one skilled in the art with a convenient road map for implementing an exemplary embodiment; it should be understood that various changes may be made in the function and arrangement of elements described in an exemplary embodiment without departing from the scope of the invention as set forth in the appended claims and their legal equivalents.

[0139] Examples of possible subject matters of aspects of the invention are presented below in a structured manner.

[0140] Item 1: Hand control (800) for a hydrofoil watercraft (1) comprising:

[0141] - a user-operable input device (802), for example a lever, a slider or a button,

[0142] - wherein the input device (802) is movable along an adjustment path (x) between a first end position (x1) and a second end position (x2), and

[0143] - a force device (803) with which the input device (802) is subjected to force in the direction of the first end position (x1), so that a force is to be applied by a user in order to move the input device (802) along the adjustment path (x) towards the second end position (x2), characterized in that - the adjustment path (x) has an intermediate position (x3) in order to divide the adjustment path (x) into a first adjustment range (y1) and a second adjustment range (y2),

[0144] - wherein the force device (803) is arranged and designed such that the force before the intermediate position (x3), against which the input device (802) is movable in the first adjustment range (y1), is different from the force after the intermediate position (x3), against which the input device (802) is movable in the second adjustment range (y2).

[0145] Item 2: Hand control according to item 1 ,

[0146] - wherein the force device (803) is arranged and designed such that the force before the intermediate position (x3), against which the input device (802) is movable in the first adjustment range (y1), is less than or greater than the force after the intermediate position (x3), against which the input device (802) is movable in the second adjustment range (y2).

[0147] Item 3: Hand control according to item 1 or 2,

[0148] - wherein the force device (803) is arranged and designed such that the force for overcoming the intermediate position (x3) is greater than the force before and / or after the intermediate position (x3) against which the input device (802) is movable in the first and / or second adjustment range (y1, y2).

[0149] Item 4: Hand control according to one of the preceding items,

[0150] - wherein the force device (803) is arranged and designed such that the force increases or decreases from the first end position (x1) towards the intermediate position (x3),

[0151] - and / or

[0152] - wherein the force device (803) is arranged and designed such that the force increases or decreases from the intermediate position (x3) towards the second end position (x2).

[0153] Item 5: Hand control according to one of the preceding items, - wherein the force device (803) is arranged and designed such that the force for overcoming the intermediate position (x3) from the first end position (x1) in the direction of the second end position (x2) is greater or smaller than the force for overcoming the intermediate position (x3) from the second end position (x2) in the direction of the first end position (x1).

[0154] Item 6: Hand control according to one of the preceding items,

[0155] - wherein the force against which the input device (802) is movable along the adjustment path (x) and in the first adjustment range (y1) increases or decreases along the adjustment path (x) and in the direction of the intermediate position (x3),

[0156] - and / or

[0157] - wherein the force against which the input device (802) is movable along the adjustment path (x) and in the second adjustment range (y2) increases or decreases along the adjustment path (x) and in the direction of the second end position (x2).

[0158] Item 7: Hand control according to one of the preceding items,

[0159] - wherein the input device (802) is a variable or adjustable throttle lever for changing the power of an engine of a hydrofoil watercraft (1).

[0160] Item 8: Hand control according to one of the preceding items,

[0161] - wherein the hand control (800) comprises a detection device (804) which detects the position of the input device (802) along the adjustment path (x),

[0162] - wherein the detection device (804) is arranged and designed to output a signal (S) depending on the detected position of the input device (802),

[0163] - wherein the signal (S) is output wirelessly,

[0164] - wherein the hand control (800) comprises a control device (805) which processes a signal (S) from a detection device (804) relating to the position of the input device (802) in order to control the power of a motor, e.g. an electric motor, of a hydrofoil watercraft (1) in accordance with the detected position of the input device (802),

[0165] - wherein the control device (805) is arranged and designed to increase a starting value at the first end position (x1) of the first adjustment range (y1) by a predefined value upon overcoming the intermediate position (x3) or upon reaching the second adjustment range (y2), so that a power limitation for an engine of a hydrofoil watercraft (1) can be changed or increased,

[0166] - wherein the control device (805) is arranged and designed to provide the power range between 100% of the available power of an engine of a hydrofoil watercraft (1) and the intermediate position (x3) in the second adjustment range (y2) when the intermediate position (x3) is overcome or when the second adjustment range (y2) is reached in the second adjustment range (y2).

[0167] Item 9: Hand control according to one of the preceding items,

[0168] - wherein the force device (803) comprises a spring, or a compression spring or a tension spring, and / or

[0169] - wherein the force device (803) comprises a variably adjustable torque generating device with which a force application to the input device (803) can be variably generated, which force acts along the adjustment path (x) and in the direction of the first end position (x1), and / or

[0170] - wherein the variably adjustable torque generating device is arranged and designed such that a torque or a force can be generated,

[0171] - which increases and / or decreases in the first adjustment range (y1), and / or

[0172] - which increases and / or decreases in the second adjustment range (y2).

[0173] - wherein the variably adjustable torque generating device may be an electric motor,

[0174] - wherein the variably adjustable torque generating device is configured and designed such that a torque or force can be generated at the intermediate position (x3) that is greater or smaller than a torque or force before and / or after the intermediate position (x3). Item 10: Hand control according to one of the preceding items,

[0175] - wherein the variably adjustable torque generating device is arranged and designed such that a force can be generated,

[0176] - which is different from the force required to overcome the intermediate position before the intermediate position (x3), and / or

[0177] - which is different from the force after the intermediate position (x3) to overcome the intermediate position (x3), and / or

[0178] - which is different from the force after the intermediate position (x3) and / or increasing towards the second end position (x2) to overcome the intermediate position (x3), and / or

[0179] - which is different before the intermediate position (x3) to the force after the Z intermediate position (x3).

[0180] Item 11 : Hand control according to one of the preceding items,

[0181] - wherein the variably adjustable torque generating device is arranged and designed such that a force can be generated against which the input device (802) is movable in the first adjustment range (y1) is smaller than the force after the intermediate position (x3) against which the input device (802) is movable in the second adjustment range (y2).

[0182] - wherein the variably adjustable torque generating device is arranged and designed such that a force can be generated which increases or decreases linearly in the first adjustment range (y1) and / or which increases or decreases non-linearly in the second adjustment range (y2).

[0183] Item 12: Hand control according to one of the preceding items,

[0184] - wherein the control device (805) is arranged and designed to automatically reduce the power of an engine of a hydrofoil watercraft (1) when the intermediate position (x3) is exceeded in the direction of the first adjustment range (y1),

[0185] - wherein the control device (805) is configured and designed to automatically reduce the power of an engine of a hydrofoil watercraft (1) linearly, - wherein the control device (805) is configured and designed to reduce the power of an engine of a hydrofoil watercraft (1) as soon as the input device (802) has exceeded a determinable distance from the intermediate position (x3),

[0186] - where the determinable distance is 5, 10 or 20% of the adjustment path (x) in the first adjustment range (y1).

[0187] Item 13: Hand control according to one of the preceding items,

[0188] - wherein the hand control (800) has a feedback device (806) with which the intermediate position (x3) can be recognized by a user,

[0189] - wherein the feedback device (806) can be arranged and designed to generate an audible sound and / or a noticeable vibration.

[0190] Item 14: Hand control according to one of the preceding items,

[0191] - wherein the control device (805) is arranged and designed to generate and output a signal (S) as a function of the adjustment path (x) of the input device (802), with which the power of an engine of a hydrofoil watercraft (1) can be controlled,

[0192] - wherein the signal (S) is directly proportional to the adjustment path (x) of the input device (802) or directly proportional to the distance between the current position of the input device (802) and the first end position (x1),

[0193] - wherein the control device (805) generates and outputs a signal (Sges) which is composed of a signal (S) which is directly proportional to the adjustment path (x) of the input device (802) and a further signal (Sw) which is stored in a memory of the control device (805) in a curve for corresponding adjustment paths (x) of the input device (802),

[0194] - whereby the further signal (Sw) or the curve of the further signal stored in the memory can be divided into three parts.

[0195] Item 15: Hand control according to one of the preceding items, - wherein the further signal (Sw) or the curve of the further signal (Sw) stored in the memory has a first, a second and / or a third part (A, B, C), and / or

[0196] - wherein the first part (A) has an exponential curve which approaches the second part (B) with a slight gradient, and / or

[0197] - where the first part (A) comprises negative values, and / or

[0198] - wherein the first part (A) has a logarithmic curve with an integer base, and / or

[0199] - wherein a second part (B) has a linear course which is formed horizontally, and / or

[0200] - wherein the second part (B) comprises the value zero, and / or

[0201] - whereby a directly proportional increase in the power of an engine of a hydrofoil vessel (1) can be obtained, and / or

[0202] - wherein a third part (C) has an exponential curve which has an increasing gradient away from the second part (B), and / or

[0203] - where the third part (C) comprises positive values, and / or

[0204] - whereby a disproportionate increase in the power of an engine of a hydrofoil vessel (1) can be obtained.

[0205] Item 16: Hand control according to one of the preceding items,

[0206] - wherein the hand control (800) comprises a positioning device (807) which detects the position of the hand control (800) in geographical coordinates,

[0207] - wherein the control device (805) is arranged and designed to determine the speed of the hand control (800) from the values ​​of the position device (807) which change over time and thus from the change in the position of the hand control (800).

[0208] Item 17: Hand control according to one of the preceding items,

[0209] - wherein the control device (805) is configured and designed to generate and output a signal (S) depending on the adjustment path (x) of the input device (802) and depending on the speed of the manual control (800), which signal corresponds to an output power setpoint of an engine of a hydrofoil watercraft (1), - wherein the control device (805) is configured and designed to provide control curves for different speeds, which predetermine the relationship between the signal and the adjustment path of the input device,

[0210] - where the relationship between the output power setpoint and the adjustment range is proportional, sub-proportional or over-proportional depending on the speed, and / or

[0211] - whereby the relationship between the output power setpoint and the adjustment range is changed with increasing speed, first from disproportionate to proportional and then to subproportional,

[0212] - wherein the relationship between the output power setpoint and the adjustment range is sub-proportional for a speed below a first predetermined speed, for example 15 km / h, so that a longer range of the adjustment range is available for low speeds, and / or

[0213] - wherein the relationship between the output power setpoint and the adjustment path is proportional for a speed above a first predetermined speed, for example 15 km / h, and below a second predetermined speed, for example 25 km / h, so that the changes in the adjustment path result in a corresponding change in the output power setpoint, and / or

[0214] - wherein the relationship between the output power setpoint and the adjustment range is disproportionate for a speed above a second predetermined speed, for example 25 km / h, so that a longer range of adjustment range is available for high speeds.

[0215] Item 18: System for operating a hydrofoil watercraft comprising:

[0216] - a hand control (800) for a hydrofoil watercraft (1) according to one of the preceding objects, and

[0217] - a hydrofoil water sports device (1). Item 19: A flight altitude limiting arrangement for a hydrofoil watercraft, wherein the flight altitude limiting arrangement is configured to supply air to a propulsion device of the hydrofoil watercraft when a distance between a floating body, for example a board, of the hydrofoil watercraft and the water surface is greater than a predetermined maximum distance, for example to supply air to the inlet side, in order to deliberately induce a drop in the delivery power in the propulsion device, thereby reducing the speed of the hydrofoil watercraft and / or reducing the distance between the board and the water surface.

[0218] Item 20: A flight altitude limiting arrangement for a hydrofoil watercraft, wherein the flight altitude limiting arrangement is configured to supply air to a drive device of the hydrofoil watercraft when a submerged depth of a mast is less than a predetermined reference submerged depth, for example to supply air on the inlet side, in order to deliberately bring about a drop in the delivery power in the drive device, thereby bringing about a reduction in the speed of the hydrofoil watercraft and / or a reduction in the distance between the board and the water surface.

[0219] Item 21: System for operating a hydrofoil watercraft (1), comprising a hand control (800) with a user-operable control element (802), for example a lever, a slider, a rotary wheel, a joystick or a button, wherein the control element (802) is movable along an adjustment path (x) between a first end position (x1) and a second end position (x2), a control unit (16) which is configured to control a motor (205) of the hydrofoil watercraft (1) based on a signal output by the hand control (800), wherein the system is configured such that, on the one hand, an adjustment-path-dependent change in an engine power output can be effected with the control element (802) and, on the other hand, certain additional functions can be triggered by positioning and / or moving the control element (802) in a predetermined manner.Item 22: System for operating a hydrofoil watercraft (1), comprising a hand control (800) with a user-operable control element (802), for example a lever, a slider, a rotary wheel, a joystick or a button, wherein the control element (802) is movable along an adjustment path (x) between a first end position (x1) and a second end position (x2), a control unit (16) which is configured to determine an output power change rate (R) based on an actual position of the control element (802) in the adjustment path (x), and to change an actual output power setpoint of a motor (205) into a new output power setpoint based on the determined output power change rate (R).

[0220] Item 23: System for operating a hydrofoil watercraft (1), comprising a hand control (800) with a user-operable control element (802), for example a lever, a slider, a rotary wheel, a joystick or a button, wherein the control element (802) is movable along an adjustment path (x) between a first end position (x1) and a second end position (x2), a control unit (16) which is configured to control a motor (205) of the hydrofoil watercraft (1) based on a signal output by the hand control (800), wherein the control unit (16; 805) is configured and designed to generate and output a motor control signal (S) depending on the adjustment path (x) of the input device (802) and depending on a speed of the hydrofoil watercraft (1), which motor control signal corresponds to a desired output power value of a motor of a hydrofoil watercraft (1).

[0221] Item 24: Mast unit comprising a mast, a coupling portion for mounting the mast to a board assembly, and a control unit provided at an upper end portion of the mast unit. The mast unit comprises a water cooling arrangement for the control unit, which is integrated into the mast unit and is configured such that water is conveyed from a part of the mast unit located in the water during travel, or from a hull assembly arranged thereon, to the control unit provided in the upper end portion of the mast unit for cooling purposes. Heat exchange takes place between the water and the control unit in the mast unit. Water can flow into a mast plate near the control unit, so that the mast plate acts as a heat exchanger, or can come into direct contact with the control unit, for example, an ESC block, so that direct heat transfer can take place.the mast may have a channel or a channel may be provided externally on the mast to convey water.,

[0222] Item 25: Mast unit according to item 24, wherein the water cooling arrangement is passive and has an inlet on the mast and / or a hull arrangement which is open in the forward direction of travel of the mast, for example an inlet opening at a tip of the hull arrangement, so that during a travel movement of the mast, water can flow into the inlet and can be conveyed upwards to the control unit by the resulting dynamic pressure, wherein a water quantity or a water throughput can be adjusted via a line cross-section.

[0223] Item 26: Mast unit according to item 24, wherein the cooling arrangement is designed such that a drive device provided in the hull arrangement, for example an impeller, is used for pressurizing water which is supplied to the cooling arrangement.

Claims

CLAIMS 1. A control arrangement for a hydrofoil watercraft (1), comprising a flow-around body, for example a flow profile, such as a wing, a tail unit (300), or a drive device (200), such as a propeller or impeller, wherein the flow-around body is designed such that, when the hydrofoil watercraft (1) is operated in the water, a reaction force is generated due to a relative movement between the water and the flow-around body, for example a buoyancy force, a downforce or a thrust force, and an air supply arrangement which is designed to provide air in such a way that it at least partially reaches the flow-around body in order to bring about a change, for example a reduction, in the reaction force.

2. A flight altitude limiting arrangement (900) for a hydrofoil watercraft (1), wherein the flight altitude limiting arrangement (900) may comprise a control arrangement according to claim 1 and / or is configured to supply air to a flow-around body, for example a drive device (200), such as a propeller or impeller, of the hydrofoil watercraft (1), when a distance between a floating body of the hydrofoil watercraft (1), for example a board (10), and the water surface is greater than a predetermined maximum distance, or when an immersion depth of a mast arrangement is less than a predetermined reference immersion depth, for example on the inlet side of the drive device, upstream of the drive device, and / or in the region of the drive device, in order to reduce a reaction force generated by the flow-around body.for example, to reduce a feed force generated by the drive device.

3. Control arrangement according to one of claims 1 and 2, wherein the air supply arrangement has one outlet (901) or a plurality of outlets (901) which are provided such that air discharged via the respective outlet (901) can at least partially reach the flow-around body, for example can reach the drive device (200).

4. Control arrangement according to claim 3, wherein at least one outlet (901) is provided in a flow channel (116) in which the drive device (200) is arranged.

5. Control arrangement according to claim 3, wherein at least one outlet is provided outside a flow channel (116) in which the drive device (200) is arranged, for example on a hull arrangement (100) or on a mast arrangement (50).

6. Control arrangement according to one of claims 3 to 5, further comprising an inlet (904, 905, 906) which is fluidly connectable or fluidly connected to at least one outlet (901), wherein the inlet (904, 905, 906) is provided closer to the floating body of the hydrofoil watercraft (1) than the outlet (901), or wherein the inlet (904, 905, 906) is positioned above the outlet (901).

7. Control arrangement (900) according to claim 6, wherein at least one inlet (904, 905, 906) is provided on a mast arrangement (50) or a mast, for example on a rear side of the mast and / or on a side surface of the mast and / or on a front or leading edge of the mast.

8. Control arrangement (900) according to claim 6 or 7, wherein a plurality of inlets (904, 905, 906) are provided, for example one above the other and / or in a line, and wherein the inlets can be individually switched on, for example by valve arrangements, or can be blocked with an object, for example by a closure, such as a plug, so that only a desired number of inlets or only a predetermined inlet of a plurality of inlets can admit air, in particular can suck in air.

9. Control arrangement (900) according to one of claims 2 to 8, further comprising a detection device which can detect an air flow through the air supply arrangement, wherein the detection device can have a sensor for detecting an air flow or can be designed to detect or determine an air supply, for example from drive data of the drive device (200), in particular from motor data of a motor (205) operatively connected to the drive device (200) and / or from motor drive signals of a control unit (16).

10. Control arrangement (900) according to claim 9, wherein a motor (205) for driving the drive device (200) can be controlled based on a detected air flow, for example can be deactivated or turned down when an air flow is detected, or the hydrofoil watercraft (1) is transferred into a predetermined operating mode based on a detected air flow, for example into a surfing mode, in which the motor (205) can be deactivated and a flow channel (161) to the drive device (200) can be blocked or closed.

11. Control arrangement (900) according to claim 9 or 10, which is further configured to detect air supply events and to output a signal based on the detected air supply events, wherein the hydrofoil watercraft (1) can be configured to change an operating setting of the hydrofoil watercraft (1) based on the detected air supply events and / or to present a user with suggestions for an operating setting suitable for the user.

12. Hydrofoil watercraft (1) with an arrangement according to one of claims 1 to 11.

13. Hand control for a hydrofoil watercraft (1), for example a hydrofoil watercraft according to claim 12, with a user-operable input device (802), for example a lever, a slider, a rotary wheel, a joystick or a button, wherein the input device (802) is movable along an adjustment path (x) and the movement of the input device (802) along the adjustment path generates a signal which can be used by a control unit (16) to change a power output of a motor (205), wherein the adjustment path (x) has a first partial range (y1), which can form a first functional range, and a second partial range (y2), which can form a second can form a functional area in which an additional function is triggered or provided, and wherein the hand control is set up so that the transition between the first sub-area (y1) and the second sub-area (y2) is signaled to the user.

14. Hand control according to claim 13, wherein the hand control has a force device (803) which provides a tactilely perceptible pressure point in the adjustment path (x), which can be overcome by applying an increased force, and / or which applies a force to the input device (802) in the adjustment path (x) which counteracts a movement of the input device (802) by the user.

15. Hand control according to claim 13 or 14, wherein the system is set up so that with the input device (802) on the one hand a change in a motor power output can be effected depending on the adjustment path and on the other hand certain additional functions can be triggered by positioning and / or moving the input device (802) in a predetermined manner, and / or wherein the system is set up to determine an output power change rate (R) based on an actual position of the control element (802) in the adjustment path (x) and to change an actual output power setpoint of a motor (205) into a new output power setpoint based on the determined output power change rate (R), and / or wherein a control unit (16;805) is arranged and designed to generate and output a motor control signal (S) as a function of the adjustment path (x) of the input device (802) and as a function of a speed of the hydrofoil watercraft (1), which motor control signal corresponds to a desired output power value of a motor of a hydrofoil watercraft (1);

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