Attack angle adjustable hydrofoil ship

Abstract

The embodiment of the utility model provides an attack-angle-adjustable hydrofoil ship which comprises a ship body, the ship body comprises a cabin and a supporting frame, a cavity is formed in the cabin, the supporting frame is fixedly connected with the cabin, and at least part of the supporting frame is arranged outside the cavity; the connecting rod is rotationally connected to the supporting frame and rotates around the axial direction of the connecting rod, and the axial direction of the connecting rod is perpendicular to the advancing direction of the ship body; the rotating rear wing is detachably and fixedly connected to the connecting rod; and the driving device is used for driving the connecting rod to rotate so as to adjust the attack angle of the rotating rear wing. The hydrofoil ship with the adjustable attack angle can better adapt to different navigation environments.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of ship technology, in particular to an angle-of-attack adjustable hydrofoil ship. BACKGROUND

[0002] In the prior art, the hydrofoil technology is a fundamental method to reduce the resistance of waterborne ships. Compared with ordinary non-hydrofoil ships, this technology can reduce the overall resistance of the ship by as much as 80%. This is almost the extent that other techniques for reducing the resistance of planing boats cannot achieve. The hydrofoil ship uses the buoyancy provided by the hydrofoil to slide on the water surface. Sliding on the water surface reduces the wet surface area of the ship, thereby reducing the hydrodynamic resistance, and can travel at a higher speed, with higher navigation efficiency than traditional ships. This means that sea transportation can be faster and the efficiency of transporting goods and personnel can be improved. The most common types of hydrofoils for hydrofoil ships are two: semi-submerged hydrofoils and fully submerged hydrofoils. Early hydrofoil ships generally use fixed angle-of-attack hydrofoil systems. The core design features include rigid connection structure: the hydrofoil is rigidly fixed to the support frame by welding or bolts, and the angle of attack is set once during installation. Static fluid mechanics design is based on optimizing the airfoil parameters at a specific cruising speed, and the preset angle of attack matches the ideal working condition. However, in actual use environment, with external factors such as hydrological environment, a fixed single hydrofoil cannot better adapt to different environments. Therefore, an angle-of-attack adjustable hydrofoil ship is needed, which can better adapt to different navigation environments. CONTENT OF THE UTILITY MODEL

[0003] The present application aims to solve at least one of the technical problems existing in the prior art. To this end, the present application provides an angle-of-attack adjustable hydrofoil ship that can better adapt to different navigation environments.

[0004] According to the angle-of-attack adjustable hydrofoil ship of the present application, the ship body includes a cabin and a support frame, the cabin is provided with a chamber, the support frame is fixedly connected with the cabin, and the support frame is at least partially arranged outside the chamber; the connecting rod is rotatably connected to the part of the support frame outside the chamber and rotates around the axial direction of the connecting rod, and the axial direction of the connecting rod is perpendicular to the forward direction of the ship body; the rotating rear wing is detachably fixedly connected to the connecting rod; and the driving device is used to drive the connecting rod to rotate, so as to adjust the angle of attack of the rotating rear wing.

[0005] The attack angle adjustable hydrofoil ship has at least the following beneficial effects: the connecting rod is arranged, the rotation of the connecting rod can drive the rotation of the rotating rear wing, the attack angle of the rotating rear wing can be adjusted through the rotation of the connecting rod, the rotating rear wing can better adapt to the sailing environment, and the sailing posture of the ship body can be adjusted by changing the attack angle of the rotating rear wing.

[0006] According to some embodiments of the utility model, the connecting rod includes a first rod and a second rod, the rotating rear wing includes a left rear wing and a right rear wing, the first rod and the second rod are arranged on the two sides of the support frame respectively, one end of the first rod is rotationally connected to the support frame, the left rear wing is arranged at the other end of the first rod, one end of the second rod is rotationally connected to the support frame, and the right rear wing is arranged at the other end of the second rod.

[0007] According to some embodiments of the utility model, the attack angle adjustable hydrofoil ship further includes a power device, the power device is used for driving the ship body to move, and the power device is fixedly arranged on the support frame.

[0008] According to some embodiments of the utility model, the attack angle adjustable hydrofoil ship further includes a front wing, and the extension direction of the front wing is parallel to the axial direction of the connecting rod.

[0009] According to some embodiments of the utility model, a connecting block is arranged on the support frame, and the front wing is rotationally arranged on the connecting block.

[0010] According to some embodiments of the utility model, a sliding groove is arranged on the support frame, the sliding groove extends along the height direction of the ship body, and the connecting block is slidingly arranged in the sliding groove.

[0011] According to some embodiments of the utility model, the attack angle adjustable hydrofoil ship further includes a torsional spring, one end of the torsional spring is fixed to the connecting block, the other end of the torsional spring is fixed to the front wing, and the torsional spring is used for resetting the attack angle of the front wing.

[0012] According to some embodiments of the utility model, at least two limiting blocks are further arranged on the connecting block to limit the rotation angle of the front wing, and the front wing is arranged between the two limiting blocks.

[0013] According to some embodiments of the present invention, the support frame is disposed on the lower side of the cabin, the support frame includes a keel and side plates, the keel is disposed along the forward direction of the hull, and the side plates are fixedly disposed on the keel and attached to the lower side of the cabin.

[0014] According to some embodiments of this utility model, the rotating rear wing is spaced apart from the hull.

[0015] According to some embodiments of the present invention, the rotating rear wing is disposed on the lower side of the hull.

[0016] Additional aspects and advantages of this invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the external structure of a hydrofoil with adjustable angle of attack according to this utility model;

[0018] Figure 2 This is a schematic diagram of the support frame for an adjustable angle-of-attack hydrofoil according to this utility model.

[0019] Figure 3 This is an exploded structural diagram of an adjustable angle-of-attack hydrofoil according to the present invention.

[0020] Icon labels:

[0021] 1. Hull; 11. Cabin; 12. Support frame; 13. Keel; 14. Side plate; 2. Connecting rod; 21. First rod; 22. Second rod; 3. Power unit; 4. Rotating rear wing; 41. Left rear wing; 42. Right rear wing; 5. Front wing; 6. Connecting block; 7. Steering gear. Detailed Implementation

[0022] The embodiments of this utility model are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this utility model, and should not be construed as limiting this utility model.

[0023] In the description of this utility model, it should be understood that the directional descriptions, such as up, down, front, back, left, right, etc., indicate the directional or positional relationships based on the directional or positional relationships shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0024] In the description of this utility model, "several" means one or more, "multiple" means two or more, "greater than," "less than," and "exceeding" are understood to exclude the stated number, while "above," "below," and "within" are understood to include the stated number. The use of "first" and "second" in the description is merely for distinguishing technical features and should not be construed as indicating or implying relative importance, or implicitly indicating the number of indicated technical features, or implicitly indicating the order of the indicated technical features.

[0025] In the description of this utility model, unless otherwise explicitly defined, terms such as "setting," "installation," and "connection" should be interpreted broadly, and those skilled in the art can reasonably determine the specific meaning of the above terms in this utility model in conjunction with the specific content of the technical solution.

[0026] Hydrofoils, utilizing the principles of hydrodynamics, liberate ships from the constraints of the water surface, granting them unprecedented speed and stability. When a ship, propelled by a propeller, traverses the water at high speed, the hydrofoil, submerged in the water, creates a velocity difference between its upper and lower surfaces according to Bernoulli's principle: the side with higher velocity has lower pressure, and the side with lower velocity has higher pressure, thus generating upward lift. As speed increases, this lift is sufficient to lift the hull above the water, allowing the ship to "fly" on the water, significantly reducing water resistance. This enables the ship to move at astonishing speeds while also significantly reducing wave impact, resulting in smoother navigation. The shape of the hydrofoil is crucial to its performance. Different airfoils, such as U-shaped, T-shaped, L-shaped, V-shaped, S-shaped, C-shaped, Y-shaped, O-shaped, and E-shaped, each possess unique lift and drag characteristics. The size, thickness, and airfoil shape of the hydrofoil all affect its performance in water. For example, a well-designed hydrofoil, with its curved upper and side surfaces, ensures smooth water flow at high speeds, maximizing lift and minimizing drag. Conversely, an unsuitable airfoil design can cause water flow separation, creating turbulence, thus reducing lift and increasing drag. Angle of attack, the angle between the hydrofoil and the direction of the water flow, is another crucial factor affecting hydrofoil performance. Properly adjusting the angle of attack during navigation can optimize a vessel's performance. Under normal navigation conditions, a moderate increase in angle of attack can boost lift, but it also introduces more drag. However, if the angle of attack is too large, the hydrofoil may stall, resulting in a sharp drop in lift and a dramatic increase in drag, severely impacting the vessel's handling and speed. Therefore, hydrofoil design and adjustment require meticulous precision to ensure optimal performance under various navigation conditions. In practical applications, marine engineers carefully design the shape and angle of attack of the hydrofoil based on factors such as the vessel's intended use, expected speed, stability requirements, and drag limitations. For example, high-speed yachts or racing boats may employ more aggressive hydrofoil designs to pursue ultimate speed and performance; while cargo ships or yachts may prioritize stability and comfort, thus opting for a more conservative hydrofoil design. Through this meticulous design, vessels can maintain high speeds while ensuring safety and efficiency, bringing a completely new experience to sailing.

[0027] Reference Figure 1 , Figure 2 and Figure 3An adjustable angle-of-attack hydrofoil, according to a first aspect of this utility model, includes: a hull 1, a connecting rod 2, a drive device, and a rotating rear wing 4. The hull 1 includes a cabin 11 and a support frame 12. A cavity is provided inside the cabin 11. The support frame 12 is fixedly connected to the cabin 11, and at least part of the support frame 12 is located outside the cavity. The connecting rod 2 is rotatably connected to the portion of the support frame 12 located outside the cavity and rotates about the axial direction of the connecting rod 2. The axial direction of the connecting rod 2 is perpendicular to the forward direction of the hull 1. The rotating rear wing 4 is detachably fixedly connected to the connecting rod 2. The drive device is used to drive the connecting rod 2 to rotate, thereby adjusting the angle of attack of the rotating rear wing 4. The cabin 11 in the hull 1 has a cavity, which allows the hull 1 to provide buoyancy. The support frame 12 located outside the cabin 11 can provide strong support for the cabin 11, thereby giving the hull 1 strong structural strength. Furthermore, by placing a portion of the support frame 12 outside the chamber of the cabin 11, the airtightness of the cabin 11 is not compromised when installing the connecting rod 2, thus preventing water leakage. In particular, the connecting rod 2 needs to be rotated to adjust the angle of attack of the rotating rear wing 4. If the connecting rod 2 passes through the chamber of the cabin 11, its rotation would easily affect the airtightness of the cabin 11. By installing the support frame 12 and rotating the connecting rod 2 to the portion of the support frame 12 outside the chamber, the angle of attack of the rotating rear wing 4 can be changed by rotating the connecting rod 2 without affecting the airtightness of the cabin 11. The drive device used to drive the connecting rod 2 to rotate can employ various motors such as stepper motors or servo motors to precisely adjust the angle of attack of the rotating rear wing 4.

[0028] To adapt to a wider range of hydrological environments, the rotating rear wing 4 is detachably mounted on the connecting rod 2. This allows for easy replacement of the rotating rear wing 4 with a more suitable one for different hydrological conditions. The detachable connection between the rotating rear wing 4 and the connecting rod 2 can be achieved through threaded connections, snap-fit ​​connections, flange connections, expansion sleeve connections, and key pin connections. Specifically, for a threaded connection, external threads are machined at the end of the connecting rod 2, and a connecting hole with internal threads is provided on the rotating rear wing 4. The connection is secured by rotation and tightening, and a gasket can be placed on the rotating rear wing 4 to prevent loosening. For a snap-fit ​​connection, a hook is provided on the connecting rod 2, and a pull ring or groove is provided on the rotating rear wing 4. Tightening the pull ring or groove with the hook also achieves a detachable and secure connection.

[0029] Furthermore, a rudder gear 7 needs to be installed on the hull 1. The function of the rudder gear 7 is to control the ship's course, that is, to maintain or dynamically change the ship's direction of travel according to the intention of the helmsman or an automatically designed route map, so that the ship can safely reach its destination. The role of the rudder gear 7 on the ship is equivalent to the steering wheel and its connected steering mechanism in a car. Specifically, the rudder gear 7 changes the direction of the hull by controlling the deflection angle of the rudder blade at the stern, using the counter-thrust force generated by the rudder blade against the water flow. The stability of the ship's course and the turning ability are the two main functions of the rudder gear 7 system. The ship should travel in a straight line to reach its destination quickly and reduce energy consumption. However, the ship will inevitably be affected by external forces (such as waves, wind, and currents) and deviate from its original course during straight-line travel. The ability to maintain the ship's intended course after the disturbance is eliminated is the stability of the course. Turning ability refers to the ability to control the ship's course and speed in a timely manner in case of emergencies or when navigating in limited waterways (such as inland waterways or entering and leaving ports). More specifically, the servo motor 7 is positioned on the underside of the rotating rear wing 4. During the ship's navigation, the rotating rear wing 4 provides significant lift in the water. Positioning the servo motor 7 on the underside of the rotating rear wing 4 ensures that the servo motor 7 is submerged in the water, thus enabling better control of the ship's direction of travel.

[0030] According to some embodiments of this utility model, the connecting rod 2 includes a first rod 21 and a second rod 22, and the rotating rear wing 4 includes a left rear wing 41 and a right rear wing 42. The first rod 21 and the second rod 22 are respectively disposed on both sides of the support frame 12. One end of the first rod 21 is rotatably connected to the support frame 12, the left rear wing 41 is disposed at the other end of the first rod 21, one end of the second rod 22 is rotatably connected to the support frame 12, and the right rear wing 42 is disposed at the other end of the second rod 22. The rotating rear wing 4 is divided into a left rear wing 41 and a right rear wing 42 and disposed on the left and right sides of the hull 1. By driving the left rear wing 41 and the right rear wing 42 to rotate independently through the first rod 21 and the second rod 22 respectively, the angle of attack of the left rear wing 41 and the right rear wing 42 can be adjusted independently. This allows the left rear wing 41 and the right rear wing 42 to provide different lift, thereby not only better adjusting the attitude of the hull 1, but also greatly reducing the turning radius of the ship. When a ship is tilted, its structure may deform or even be damaged due to uneven loads. Especially under alternating cyclic loads, the hull structure may be at risk of tearing due to lateral tilting. Such structural damage not only affects navigational safety but can also lead to serious economic losses. Hull tilting directly affects a ship's stability. Stability is a crucial ability for a ship to resist external forces and maintain balance. When a ship is tilted, stability decreases, making it more susceptible to tilting beyond critical angles under the influence of wind, waves, and other external forces, potentially leading to capsizing. Capsizing not only results in loss of the ship and cargo but also poses a serious threat to the lives of the crew. Hull tilting can also affect a ship's navigational performance, such as speed and course stability. A tilted hull may reduce rudder effectiveness, making it difficult for the ship to maintain a stable course during navigation. Furthermore, a tilted hull may increase the risk of collisions with other objects (such as bridges and docks), further exacerbating navigational safety hazards. Specifically, when the ship 1 tilts to the left, the lift of the left rear wing 41 is increased by raising the angle of attack of the left rear wing 41, while the lift of the right rear wing 42 is reduced by adjusting the angle of attack of the right rear wing 42, thus correcting the tilt of the ship 1.

[0031] According to some embodiments of this utility model, the angle-of-attack adjustable hydrofoil also includes a power unit 3, which drives the hull 1 to move. The power unit 3 is fixedly mounted on the support frame 12. The power unit 3 provides thrust to the hull 1, causing the hull 1 to move along the direction of travel. During the movement of the hull 1, rotation provides significant lift, thus components on the upper side of the rotating rear wing 4 may be lifted above the water surface by the rotating rear wing 4. Some power units 3 provide power by being positioned in the water; placing the power unit 3 under the rotating rear wing 4 ensures better immersion of the power unit 3 in the water, thereby providing more stable power to the hull 1.

[0032] According to some embodiments of this utility model, the angle-of-attack adjustable hydrofoil also includes a front wing 5, the extension direction of which is parallel to the axis of the connecting rod 2. By setting the front wing 5, not only can the hull 1 be provided with greater lift, but the attitude of the hull 1 can also be better adjusted. When only the rotating rear wing 4 is set, the hull 1 is prone to tilting in the fore-and-aft direction, while after setting the front wing 5, the hull 1 is more likely to achieve balance.

[0033] According to some embodiments of this utility model, a connecting block 6 is provided on the support frame 12, and the front wing 5 is rotatably mounted on the connecting block 6. After the front wing 5 is configured as a rotatable connection, the front wing 5 can rotate with the direction of water flow, thereby automatically adjusting the angle of attack of the front wing 5 according to the direction of water flow, thus better adapting to changes in water flow.

[0034] According to some embodiments of this utility model, a sliding groove is provided on the support frame 12, extending along the height direction of the hull 1, and the connecting block 6 is slidably disposed within the sliding groove. By driving the connecting block 6 to slide along the sliding groove, not only can the force-bearing position of the hull 1 be adjusted to change the attitude of the hull 1, but the distance between the front wing 5 and the rotating rear wing 4 in the height direction of the hull 1 can also be adjusted, thereby changing the cooperation between the front wing 5 and the rotating rear wing 4. This not only makes the hull 1 more stable during navigation, but also provides better lift for the hull 1.

[0035] According to some embodiments of this utility model, the angle-of-attack adjustable hydrofoil also includes a torsion spring. One end of the torsion spring is fixed to the connecting block 6, and the other end is fixed to the front wing 5. The torsion spring is used to reset the angle of attack of the front wing 5. Under the action of water flow, the angle of attack of the front wing 5 will change. In order to avoid the front wing 5 rotating too much under the action of water flow or gravity, a torsion spring is provided to adjust the angle of attack of the front wing 5 to the direction of forward movement of the hull 1 when the rotation of the front wing 5 is too large.

[0036] According to some embodiments of this utility model, at least two limiting blocks are also provided on the connecting block 6 to limit the rotation angle of the front wing 5, and the front wing 5 is disposed between the two limiting blocks. By setting the limiting blocks to limit the rotation angle of the front wing 5, excessive rotation angle of the front wing 5 is avoided.

[0037] According to some embodiments of this utility model, the support frame 12 is disposed on the lower side of the cabin 11. The support frame 12 includes a keel 13 and side plates 14. The keel 13 is disposed along the forward direction of the hull 1, and the side plates 14 are fixedly disposed on the keel 13 and attached to the lower side of the cabin 11. After the keel 13 and side plates 14 are disposed, the support frame 12 provides more uniform support to the cabin 11, avoiding uneven local stress on the cabin 11. Especially when the rotating rear wing 4 and front wing 5 provide greater lift, the rotating rear wing 4 and front wing 5 can both be disposed on the keel 13, so that the lift is first transferred to the keel 13, and then evenly transferred to various parts of the cabin 11 through multiple side plates 14.

[0038] According to some embodiments of this utility model, the rotating rear wing 4 is spaced apart from the hull 1. This avoids interference between the rotation of the hull 1 and the rotating rear wing 4, which could cause damage, when the angle of attack of the rotating rear wing 4 is changed.

[0039] According to some embodiments of this utility model, the rotating rear wing 4 is disposed on the lower side of the hull 1. Distributing the rotating rear wing 4 on the lower side allows it to submerge at greater depths in the water, thereby providing more lift to reduce the draft of the hull 1.

[0040] In the description of this utility model, the terms "one embodiment," "some embodiments," "illustrative embodiment," "example," "specific example," or "some examples," etc., refer to specific features, structures, materials, or characteristics described in connection with that embodiment or example, which are included in at least one embodiment or example of this utility model. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

Claims

1. An adjustable-attack-angle hydrofoil craft, characterized by, The application relates to an attack angle adjustable hydrofoil boat. The boat body comprises a cabin and a support frame, a cavity is arranged in the cabin, and the support frame is fixedly connected with the cabin and arranged at least partially outside the cavity. A connecting rod is rotationally connected to the part of the support frame outside the cavity and rotates around the axis of the connecting rod, and the axis of the connecting rod is perpendicular to the advancing direction of the boat body. A rotating rear wing is detachably fixedly connected to the connecting rod. A driving device is used for driving the connecting rod to rotate so as to adjust the attack angle of the rotating rear wing.

2. The adjustable attack angle hydrofoil boat according to claim 1, characterized in that, The connecting rod comprises a first rod and a second rod, and the rotating rear wing comprises a left rear wing and a right rear wing.

3. The adjustable attack angle hydrofoil boat according to claim 1, characterized in that, One end of the first rod is rotationally connected to the support frame, and the left rear wing is arranged at the other end of the first rod.

4. The adjustable attack angle hydrofoil boat according to claim 1, characterized in that, One end of the second rod is rotationally connected to the support frame, and the right rear wing is arranged at the other end of the second rod.

5. The adjustable attack angle hydrofoil boat according to claim 4, characterized in that, The attack angle adjustable hydrofoil boat further comprises a power device used for driving the boat body to move, and the power device is fixedly arranged on the support frame.

6. The adjustable attack angle hydrofoil boat according to claim 5, characterized in that, The attack angle adjustable hydrofoil boat further comprises a front wing, and the extending direction of the front wing is parallel to the axis of the connecting rod.

7. The adjustable attack angle hydrofoil boat according to claim 5, characterized in that, The support frame is provided with a connecting block, and the front wing is rotationally arranged on the connecting block.

8. The adjustable attack angle hydrofoil boat according to claim 5, characterized in that, The support frame is provided with a sliding groove extending along the height direction of the boat body, and the connecting block is slidingly arranged in the sliding groove.

9. The adjustable attack angle hydrofoil boat according to claim 1, characterized in that, The attack angle adjustable hydrofoil boat further comprises a torsion spring, one end of the torsion spring is fixed to the connecting block, and the other end of the torsion spring is fixed to the front wing, and the torsion spring is used for resetting the attack angle of the front wing.

10. The adjustable attack angle hydrofoil boat according to claim 1, characterized in that, The connecting block is further provided with at least two limiting blocks for limiting the rotating angle of the front wing, and the front wing is arranged between the two limiting blocks.

11. The adjustable attack angle hydrofoil boat according to claim 10, characterized in that, The support frame is arranged on the lower side of the cabin, and the support frame comprises a keel and a side plate, the keel is arranged along the advancing direction of the boat body, and the side plate is fixedly arranged on the keel and adheres to the lower side of the cabin. The rotating rear wing is arranged on the lower side of the boat body. The rotating rear wing is arranged on the lower side of the boat body.

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