Integrated device for ship propulsion and roll reduction based on flapping wings

Abstract

The present invention relates to a ship propulsion and roll reduction integrated device based on swinging wings, comprising a hydrofoil module, a transmission module and a power module; the hydrofoil module comprises a first hydrofoil, a second hydrofoil, a third hydrofoil and a fourth hydrofoil, each hydrofoil comprising a horizontal hydrofoil and a vertical hydrofoil; the first hydrofoil and the second hydrofoil are symmetrically arranged in the vertical direction to form a port swinging hydrofoil group; the third hydrofoil and the fourth hydrofoil are symmetrically arranged in the vertical direction to form a starboard swinging hydrofoil group; the two pairs of swinging hydrofoil groups are symmetrically arranged on both sides of the longitudinal section of the hull; the composite hydrofoil structure is connected to the power module through the transmission module, the power module outputs power, the transmission module converts the rotational motion into a linear motion, drives each composite hydrofoil structure to perform a simple harmonic sinking and floating motion with adjustable motion period and motion phase, so that the device changes the motion state. The present invention achieves the effect of optimizing the ship propulsion mode and improving the stability of the ship in wind and waves while realizing efficient and low-noise propulsion.

Description

Technical Field

[0001] The present invention relates to the technical field of ship hydrofoil devices, and particularly relates to an integrated ship propulsion and roll reduction device based on counter-oscillating hydrofoils. Background Art

[0002] A ship hydrofoil device is a ship motion device. The hydrofoil can generate lift and thrust under the interaction with the fluid. By reasonably designing the layout scheme of the hydrofoil and the hydrofoil motion mode, such a device can achieve effects such as ship propulsion, reducing the sway of the ship in waves, and thus improving comfort. At present, ship hydrofoil devices are widely applied to various types of ships, underwater robots and other objects, but most of them can only achieve a single function of propulsion or roll reduction.

[0003] For modern high-performance ships, the compounding and multi-functionality of equipment are important development directions and inevitable trends. At present, the propulsion, roll reduction devices and many of their auxiliary equipment equipped on general ships will occupy a considerable amount of the cargo hold space inside the ship to a certain extent, resulting in an increase in equipment production and maintenance costs. Therefore, designing an integrated propulsion and roll reduction device has become a research hotspot for the optimization of current ship propulsion and roll reduction devices and has important practical significance. Summary of the Invention

[0004] The technical problem to be solved by the present invention is to provide an integrated ship propulsion and roll reduction device based on counter-oscillating hydrofoils in view of the deficiency of the single function of the existing ship hydrofoil device. It conducts diversified combined design on ship propulsion and roll reduction equipment, realizes efficient and low-noise ship propulsion while comprehensively using active and passive roll reduction means to reduce the rolling motion during ship navigation, and finally achieves the effects of optimizing the ship propulsion mode and improving the stability of the ship in wind and waves.

[0005] The technical solution adopted by the present invention to solve the above-mentioned technical problems is as follows:

[0006] An integrated ship propulsion and roll reduction device based on counter-oscillating hydrofoils, comprising a hydrofoil module arranged at the rear of the ship, and a transmission module and a power module arranged inside the ship;

[0007] The hydrofoil module includes four composite hydrofoil structures, namely a first hydrofoil, a second hydrofoil, a third hydrofoil and a fourth hydrofoil. Each composite hydrofoil structure includes a horizontal hydrofoil and a vertical hydrofoil installed on the surface of the horizontal hydrofoil; wherein, the vertical hydrofoil of the first hydrofoil faces upward, the vertical hydrofoil of the second hydrofoil faces downward, and they are symmetrically arranged in the vertical direction to form a port counter-oscillating hydrofoil group; the vertical hydrofoil of the third hydrofoil faces upward, the vertical hydrofoil of the fourth hydrofoil faces downward, and they are symmetrically arranged in the vertical direction to form a starboard counter-oscillating hydrofoil group; the port counter-oscillating hydrofoil group and the starboard counter-oscillating hydrofoil group are symmetrically arranged on both sides of the longitudinal middle section of the hull along the ship width direction;

[0008] The four composite hydrofoil structures are respectively connected to the power module through the transmission module. The power module outputs power, and the transmission module converts the rotational motion of the power module into a linear motion along the motion slide rail, driving each composite hydrofoil structure to perform a simple harmonic sinking and floating motion with an adjustable motion period and motion phase.

[0009] The integrated ship propulsion and anti-rolling device includes two working modes, namely the propulsion mode and the active anti-rolling mode:

[0010] In the propulsion mode, the first hydrofoil and the second hydrofoil in the port side opposing hydrofoil group respectively perform vertical simple harmonic sinking and floating motions with the same motion period and a 180° motion phase difference; the motion characteristics of the third hydrofoil and the fourth hydrofoil in the starboard side opposing hydrofoil group are respectively consistent with those of the first hydrofoil and the second hydrofoil.

[0011] In the active anti-rolling mode: the first hydrofoil and the second hydrofoil in the port side opposing hydrofoil group respectively perform vertical simple harmonic sinking and floating motions with the same motion period and a phase difference φ≠180°; the motion periods of the third hydrofoil and the fourth hydrofoil in the starboard side opposing hydrofoil group are respectively consistent with those of the first hydrofoil and the second hydrofoil, and the phase difference between the two is (φ + 180°).

[0012] In the above solution, the transmission module includes four transmission structures corresponding to the four composite hydrofoil structures one by one. Each transmission structure includes a motion slide rail, a motion slider, a motion connecting rod, a cam, a bevel gear set, and a tail shaft; the motion slide rail is vertically and fixedly installed on the hull, the motion slider is slidably installed on the motion slide rail, the inner side of the motion slider is fixedly connected to the horizontal hydrofoil of the composite hydrofoil structure, the outer side is hinged to one end of the motion connecting rod, the other end of the motion connecting rod is hinged to the cam, the cam is coaxially connected to the pinion of the bevel gear set, one end of the tail shaft is coaxially connected to the big gear of the bevel gear set, and the other end of the tail shaft is connected to the power module.

[0013] In the above solution, for a single-hull ship, the transmission module is encapsulated in the streamlined appendage box at the tail of the hull; for a catamaran, the transmission module is directly arranged in the two hulls of the catamaran.

[0014] In the above solution, the first hydrofoil and the second hydrofoil on the port side share a motion slide rail, and the third hydrofoil and the fourth hydrofoil on the starboard side share a motion slide rail.

[0015] In the above solution, the power module is arranged at the tail of the hull, and the power module is driven by an electric motor, a diesel engine or a steam turbine.

[0016] In the above solution, the vertical hydrofoil of the composite hydrofoil structure is located at the midpoint of the width of the horizontal hydrofoil, and the included angle at the connection between the two is 90 degrees.

[0017] In the above solution, the vertical hydrofoil and the horizontal hydrofoil of the composite hydrofoil structure both adopt the NACA0012 symmetric airfoil profile.

[0018] In the above solution, the integrated ship propulsion and roll reduction device further includes a sensor module and a control system. The sensor module collects motion characteristics including the hull navigation speed, acceleration, roll period, and roll angle amplitude. The control system is used to realize the switching and control of the working mode of the integrated ship propulsion and roll reduction device.

[0019] In the above solution, when the device is running, the sensor module collects the motion characteristics of the hull navigation. When the roll angle amplitude is greater than 4°, or the acceleration is greater than 0.15 times the gravitational acceleration g and the roll period is less than 8 seconds, the control system controls the device to switch the motion mode, converting from the propulsion mode to the active roll reduction mode.

[0020] The beneficial effects of the present invention are as follows:

[0021] 1. The present invention integrates the design of ship propulsion equipment and roll reduction equipment, and proposes an integrated ship propulsion and roll reduction device. Through two working modes, namely the propulsion mode and the active roll reduction mode, it realizes the integration of ship propulsion and roll reduction, effectively solves the problem of waste of ship internal space caused by the large number of auxiliary equipment and scattered layout of ship propulsion and roll reduction equipment at present, makes progress in the compounding and multi-function of ship equipment, reduces the economic costs of device production and maintenance, improves the utilization rate of the internal space of the hull, and has considerable economic benefits.

[0022] 2. The present invention designs a composite hydrofoil structure that can improve the ship propulsion efficiency and reduce the ship roll amplitude at the same time. The composite hydrofoil structure is composed of a horizontal hydrofoil part and a vertical hydrofoil part. It mainly generates thrust and lift through the pendulum motion of the horizontal hydrofoil part in the composite hydrofoil to realize the propulsion and roll reduction functions of the ship. However, different from the typical pendulum wing structure, on the one hand, while the vertical hydrofoil part in the composite hydrofoil structure plays a role in guiding the flow field on the hydrofoil surface, it increases the water flow velocity on the side of the composite hydrofoil structure with the vertical hydrofoil, thereby increasing the pressure difference between the upper and lower surfaces of the hydrofoil, enabling the thruster to generate greater lift and improving the propulsion efficiency of the thruster. On the other hand, the vertical hydrofoil part disturbs the flow field around the hull during the ship roll motion, causing the ship system to generate additional roll damping and accelerating the dissipation of system energy, which can effectively reduce the amplitude of the ship roll motion.

[0023] 3. The hydrofoil module of the present invention is composed of four composite hydrofoil structures. With the assistance of the sensor module, the control system adjusts the motion mode of the hydrofoil module behind the ship according to different control objectives, and controls the motion of the hydrofoil module by adopting the propulsion mode or the active roll reduction mode, so that the hydrofoil behind the ship generates hydrodynamic force under the action of its own sinking and floating motion and the oncoming flow, and finally realizes ship propulsion and roll reduction.

[0024] 4. In the present invention, the active roll reduction of the hull is achieved by arranging two sets of opposing hydrofoil groups on the left and right sides. The integrated propulsion and roll reduction device adjusts the simple harmonic sinking and floating motion characteristics of the hydrofoil groups on both sides according to the instantaneous value of the ship's rolling motion, so that the hydrofoil groups on both sides generate unbalanced lift forces that change periodically, which are used to counteract the rolling interference moment of the waves on the ship, thereby reducing the amplitude of the ship's rolling motion and achieving the purpose of ship roll reduction through active control.

[0025] 5. The present invention adopts the method of opposing hydrofoil propulsion. As a relatively low-frequency motion, it has excellent cavitation performance while maintaining a high level of propulsion efficiency within a large speed range, reducing the noise generated by the propulsion and roll reduction equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] The present invention will be further described below in conjunction with the drawings and embodiments. In the drawings:

[0027] Figure 1 is a schematic diagram of the overall layout of the integrated ship propulsion and roll reduction device based on opposing hydrofoils of the present invention;

[0028] Figure 2 is Figure 1 a partial structural schematic diagram of the hydrofoil module and the transmission module of the device shown;

[0029] Figure 3 is Figure 2 an enlarged partial structural view of the transmission module shown;

[0030] Figure 4 is Figure 2 a schematic diagram of the layout of the hydrofoil module and the transmission module on a single-hull ship shown;

[0031] Figure 5 is Figure 4 a rear view of the layout of the hydrofoil module and the transmission module on a single-hull ship shown;

[0032] Figure 6 is Figure 1 a three-dimensional structure diagram of the composite hydrofoil structure of the device shown;

[0033] Figure 7 is Figure 6 a side view of the composite hydrofoil structure shown;

[0034] Figure 8 is Figure 6 a top view of the composite hydrofoil structure shown;

[0035] Figure 9 is Figure 6 a front view of the composite hydrofoil structure shown.

[0036] In the figure: 1. Hull;

[0037] 2. Hydrofoil module; 21. First hydrofoil; 22. Second hydrofoil; 23. Third hydrofoil; 24. Fourth hydrofoil; 25. Horizontal hydrofoil; 26. Vertical hydrofoil;

[0038] 3. Transmission module; 31. Movement slide rail; 32. Movement slider; 33. Movement connecting rod; 34. Cam; 35. Bevel gear set; 36. Fixed shaft; 37. Tail shaft; 38. Streamlined attachment box;

[0039] 4. Power module;

[0040] 5. Sensor module;

[0041] 6. Control system. Detailed implementation manners

[0042] For a clearer understanding of the technical features, objectives, and effects of the present invention, the detailed implementation manners of the present invention will now be described in detail with reference to the accompanying drawings.

[0043] As Figure 1 shown, a ship propulsion and anti-rolling integrated device based on oscillating wings provided by an embodiment of the present invention includes a hydrofoil module 2 arranged behind the hull 1, and a transmission module 3, a power module 4, a sensor module 5, and a control system 6 arranged on the hull 1. The hydrofoil module 2 is connected to the power module 4 through the transmission module 3, and makes a vertical simple harmonic floating and sinking motion with an adjustable motion period and phase under the drive of the power module 4. The control system 6, with the assistance of the sensor module 5, adjusts the motion mode of the hydrofoil module 2 behind the ship according to different control objectives, and controls the motion of the hydrofoil module 2 in a propulsion mode or an active anti-rolling mode, so that hydrodynamic forces are generated by the hydrofoils behind the ship under the combined action of their own floating and sinking motion and the oncoming flow, and finally ship propulsion and anti-rolling are achieved.

[0044] As Figure 2 shown, the hydrofoil module 2 includes four composite hydrofoil structures, namely a first hydrofoil 21, a second hydrofoil 22, a third hydrofoil 23, and a fourth hydrofoil 24. Refer to Figures 6 - 9, each composite hydrofoil structure includes a horizontal hydrofoil 25 and a vertical hydrofoil 26 installed on the surface of the horizontal hydrofoil 25. The vertical hydrofoil 26 is located at the midpoint of the wing width of the horizontal hydrofoil 25, and the included angle at the connection between the two is 90 degrees. The cross-sections of both the vertical hydrofoil 26 and the horizontal hydrofoil 25 adopt the NACA0012 symmetric airfoil. Considering the key influence of the minimum distance between the two wings of the flapping hydrofoil thruster on its propulsion efficiency, in the present invention, the vertical hydrofoils 26 of each hydrofoil are arranged on the outer side of the flapping hydrofoil group. Specifically, among them, the vertical hydrofoil 26 of the first hydrofoil 21 faces upward, the vertical hydrofoil 26 of the second hydrofoil 22 faces downward, and they are symmetrically arranged in the vertical direction to form a port flapping hydrofoil group; the vertical hydrofoil 26 of the third hydrofoil 23 faces upward, the vertical hydrofoil 26 of the fourth hydrofoil 24 faces downward, and they are symmetrically arranged in the vertical direction to form a starboard flapping hydrofoil group. The port flapping hydrofoil group and the starboard flapping hydrofoil group are symmetrically arranged on both sides of the midship section of the hull in the ship width direction to offset the lateral force and vertical force generated by a single flapping hydrofoil group during the operation of the device and ensure the balance and stability of the device.

[0045] As Figures 2 - 3 , the transmission module 3 includes four transmission structures corresponding to the four composite hydrofoil structures one by one. Each transmission structure includes a motion slide rail 31, a motion slider 32, a motion connecting rod 33, a cam 34, a bevel gear set 35, and a tail shaft 37. The motion slide rail 31 is vertically and fixedly installed on the hull 1, the motion slider 32 is slidably installed on the motion slide rail 31, the inner side of the motion slider 32 is fixedly connected to the horizontal hydrofoil 25 of the composite hydrofoil structure, and the outer side is hinged to one end of the motion connecting rod 33. The other end of the motion connecting rod 33 is hinged to the cam 34. The cam 34 is coaxially connected to the pinion of the bevel gear set 35. The pinion is fixed by a fixed shaft 36. One end of the tail shaft 37 is coaxially connected to the large gear of the bevel gear set 35, and the other end of the tail shaft 37 is connected to the power module 4 for transmitting the power and torque generated by the power module 4. When the power module 4 operates, it drives the motion connecting rod 33 through the cam 34 and drives the motion slider 32 to make a reciprocating linear motion along the motion slide rail 31, thereby driving the composite hydrofoil structure to achieve a vertical simple harmonic floating and sinking motion. Preferably, the first hydrofoil 21 and the second hydrofoil 22 on the same side share one motion slide rail 31, and the third hydrofoil 23 and the fourth hydrofoil 24 on the other side share one motion slide rail 31.

[0046] As Figures 4 - 5 , for a single-hull ship, the transmission module 3 is encapsulated in the streamlined appendage box 38 at the tail of the hull 1. For a catamaran, the transmission module 3 is directly arranged in the two hulls of the catamaran.

[0047] The power module 4 is arranged at the tail of the hull 1 and is connected to the hydrofoil module 2 through the transmission module 3 to provide power for the integrated propulsion and anti-rolling device. Preferably, the power module 4 is driven by an electric motor, a diesel engine or a steam turbine.

[0048] The sensor module 5 collects motion characteristics including the sailing speed, acceleration, roll period, and roll angle amplitude of the hull 1; the control system 6 is used to realize the switching and control of the working modes of the ship propulsion and anti-rolling integrated device.

[0049] The propulsion and anti-rolling integrated device described in the present invention includes two working modes, namely the propulsion mode and the active anti-rolling mode:

[0050] (1) Propulsion mode: The power module 4 outputs power to drive the transmission module 3 to move. The transmission module 3 converts the rotational motion into a linear motion along the motion slide rail 31, driving each hydrofoil to perform a simple harmonic sinking and floating motion with adjustable motion period and motion phase. Among them, the first hydrofoil 21 and the second hydrofoil 22 in the port side counter-oscillating hydrofoil group respectively perform vertical simple harmonic sinking and floating motions with the same motion period and a motion phase difference of 180°; the motion characteristics of the third hydrofoil 23 and the fourth hydrofoil 24 in the starboard side counter-oscillating hydrofoil group are respectively consistent with those of the first hydrofoil 21 and the second hydrofoil 22.

[0051] (2) Active anti-rolling mode: The power module 4 adjusts the power output, changes the rotational speed of the tail shaft 37, and changes the motion characteristics of each hydrofoil through the transmission module 3, so that they respectively perform simple harmonic sinking and floating motions with the same motion period and different phases. Among them, the first hydrofoil 21 and the second hydrofoil 22 in the port side counter-oscillating hydrofoil group respectively perform vertical simple harmonic sinking and floating motions with the same motion period and a phase difference φ≠180°; the motion periods of the third hydrofoil 23 and the fourth hydrofoil 24 in the starboard side counter-oscillating hydrofoil group are respectively consistent with those of the first hydrofoil 21 and the second hydrofoil 22, and the phase difference between the two is (φ + 180°).

[0052] In the propulsion mode, on the one hand, according to the wing theory, each hydrofoil forms a hydrodynamic angle of attack under the action of the oncoming flow through the sinking and floating motion, and the force generated in the horizontal direction can be used as a thrust to push the ship forward; on the other hand, during the counter-oscillating motion of the two hydrofoils, when the two hydrofoils approach a certain distance, the pressure inside the two hydrofoils surges and forms a high-pressure water flow area, resulting in a pressure difference inside and outside, causing the vortex-induced lift to increase. At the same time, the acceleration effect of the vertical hydrofoil on the water flow outside the hydrofoil further expands the pressure difference inside and outside the two hydrofoils. The combined action of the two enables the composite hydrofoil structure to generate a greater thrust. In addition, the water flow is squeezed and deformed, which to a certain extent inhibits the formation of the wake vortex and accelerates its dissipation speed, further improving the propulsion efficiency of the device.

[0053] When the device is running, the sensor module 5 collects motion characteristics such as the sailing speed, acceleration, roll period, and roll angle amplitude of the hull 1. When the roll angle amplitude is greater than 4°, or the acceleration is greater than 0.15 times the gravitational acceleration g and the roll period is less than 8 seconds, the control system 6 controls the device to switch the motion mode, converting from the propulsion mode to the active anti-rolling mode.

[0054] In the active anti-rolling mode, the existence of the motion phase difference of the opposing hydrofoil groups on both sides of the hull causes one side of the hydrofoil group to generate a vertical lift force while the other side generates a vertical lift force of different magnitudes. That is, the two groups of hydrofoils can generate a vertically unbalanced lift force that changes periodically in opposite directions, thereby generating a roll restoring moment to resist the roll interference moment of the waves. Among them, the change period of the roll restoring moment is related to the period of the simple harmonic heaving motion of the opposing hydrofoil groups. Therefore, the control system 6 adjusts the period and phase difference of the simple harmonic heaving motion of the opposing hydrofoil groups according to the characteristic parameters reflecting the rolling motion state of the hull 1, such as acceleration, roll period, and roll angle amplitude, to adjust the period and amplitude of the roll restoring moment and achieve active anti-rolling.

[0055] At the same time, as a part of the ship appendage, the composite hydrofoil structure itself also has a certain passive anti-rolling function: First, under the action of the waves, pressure surfaces and suction surfaces are formed on both sides of the vertical hydrofoil, and the pressure difference between the two surfaces forms the composite hydrofoil damping. Second, the existence of the composite hydrofoil structure changes the pressure distribution on the hull surface, and the generated pressure difference forms the hull surface damping. In addition, the composite hydrofoil structure is also beneficial to increasing the natural roll period of the ship system, avoiding the critical area of ship rolling, preventing synchronous rolling, and improving the ship's rolling performance.

[0056] In summary, the present invention conducts a diversified combination design on the ship propulsion and anti-rolling equipment. While achieving efficient and low-noise ship propulsion, it combines active and passive anti-rolling means to reduce the rolling motion during ship navigation, and ultimately achieves the effect of optimizing the ship propulsion mode and improving the stability of the ship in wind and waves.

[0057] The embodiments of the present invention have been described above in conjunction with the accompanying drawings. However, the present invention is not limited to the above specific embodiments. The above specific embodiments are merely illustrative and not restrictive. Under the inspiration of the present invention, those of ordinary skill in the art can also make many forms without departing from the spirit and scope protected by the present invention and the claims. These all fall within the protection scope of the present invention.

Claims

1. A ship propulsion and roll reduction integrated device based on swinging wings, It is characterized in that It includes a hydrofoil module arranged at the rear of the ship, and a transmission module and a power module arranged inside the ship; The hydrofoil module includes four composite hydrofoil structures, namely, a first hydrofoil, a second hydrofoil, a third hydrofoil, and a fourth hydrofoil, each of which includes a horizontal hydrofoil and a vertical hydrofoil installed on the surface of the horizontal hydrofoil; wherein the vertical hydrofoil of the first hydrofoil faces upward, and the vertical hydrofoil of the second hydrofoil faces downward, and they are symmetrically arranged in the vertical direction to form a port side swinging hydrofoil group; the vertical hydrofoil of the third hydrofoil faces upward, and the vertical hydrofoil of the fourth hydrofoil faces downward, and they are symmetrically arranged in the vertical direction to form a starboard side swinging hydrofoil group; the port side swinging hydrofoil group and the starboard side swinging hydrofoil group are symmetrically arranged on both sides of the longitudinal section of the hull along the ship width direction; The four composite hydrofoil structures are respectively connected to the power module through the transmission module, the power module outputs power, and the transmission module converts the rotational motion of the power module into linear motion along the motion rail, driving each composite hydrofoil structure to perform simple harmonic sinking and floating motion with adjustable motion period and motion phase; The ship propulsion and roll stabilization integrated device includes two working modes, namely propulsion mode and active roll stabilization mode: In the propulsion mode, the first and second hydrofoils in the port-side oscillating hydrofoil group perform vertical simple harmonic sinking and floating motions with the same motion period and a motion phase difference of 180°; the motion characteristics of the third and fourth hydrofoils in the starboard-side oscillating hydrofoil group are consistent with those of the first and second hydrofoils. In the active anti-roll mode, the first and second hydrofoils in the port-side oscillating hydrofoil group move with the same period and phase difference. The vertical simple harmonic sinking and floating motion of the third and fourth hydrofoils in the starboard opposite-swinging hydrofoil group is consistent with the first and second hydrofoils in motion periods, and the phase difference between the two is 2. The integrated ship propulsion and roll reduction device based on the swinging wing according to claim 1, It is characterized in that The transmission module includes four transmission structures which are arranged in one-to-one correspondence with the four composite hydrofoil structures, each transmission structure includes a motion rail, a motion slider, a motion connecting rod, a cam, a bevel gear set, and a tail shaft; the motion rail is vertically fixedly installed on the hull, the motion slider is slidably installed on the motion rail, the inner side of the motion slider is fixedly connected to the horizontal hydrofoil of the composite hydrofoil structure, and the outer side is hinged to one end of the motion connecting rod, the other end of the motion connecting rod is hinged to the cam, the cam is coaxially connected to the small gear of the bevel gear set, one end of the tail shaft is coaxially connected to the large gear of the bevel gear set, and the other end of the tail shaft is connected to the power module.

3. The integrated ship propulsion and roll reduction device based on the swinging wing according to claim 2, It is characterized in that For a monohull, the transmission module is encapsulated in a streamlined appendage box at the stern of the hull; for a catamaran, the transmission module is directly arranged in two sheets of the catamaran.

4. The integrated ship propulsion and roll reduction device based on the swinging wing according to claim 2, It is characterized in that The first hydrofoil and the second hydrofoil located on the port side share a moving slide rail, and the third hydrofoil and the fourth hydrofoil located on the starboard side share a moving slide rail.

5. The integrated ship propulsion and roll reduction device based on the swinging wing according to claim 1, It is characterized in that The power module is arranged at the rear of the hull and is driven by an electric motor, a diesel engine or a steam turbine.

6. The integrated ship propulsion and roll reduction device based on the swinging wing according to claim 1, It is characterized in that The vertical hydrofoil of the composite hydrofoil structure is located at half the width of the horizontal hydrofoil, and the angle between the two is 90 degrees.

7. The integrated ship propulsion and roll reduction device based on the swinging wing according to claim 1, It is characterized in that The cross-sections of the vertical hydrofoil and the horizontal hydrofoil of the composite hydrofoil structure both adopt NACA0012 symmetrical airfoil shapes.

8. The integrated ship propulsion and roll reduction device based on the swinging wing according to claim 1, It is characterized in that It also includes a sensor module and a control system. The sensor module collects motion characteristics including the ship's navigation speed, acceleration, roll period and roll angle amplitude; the control system is used to realize the switching and control of the working mode of the ship's integrated propulsion and roll reduction device.

9. The ship propulsion and roll reduction integrated device based on the swinging wing according to claim 8, It is characterized in that When the device is running, the sensor module collects the motion characteristics of the ship's navigation. When the roll angle amplitude is greater than 4°, or the acceleration is greater than 0.15 times the gravitational acceleration g and the roll period is less than 8 seconds, the control system controls the device to switch the motion mode from propulsion mode to active roll reduction mode.

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