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Variable-torsional-rigidity underwater tractor hydrofoil system for glider

A technology of torsional stiffness and traction machine, which is applied in the field of ships and ocean engineering, can solve the problems of large changes, random wave conditions, and difficulty in achieving optimal performance, and achieve the effects of lower requirements, high adaptability, and reduced energy consumption

Active Publication Date: 2021-12-07
SHANGHAI JIAO TONG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, this torsional rigidity is usually only sufficient to achieve the best performance under specified conditions
In the time span of a wave glider from a few months to a year, the wave state is random and changes greatly, and it is difficult for the existing design to achieve the best performance

Method used

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  • Variable-torsional-rigidity underwater tractor hydrofoil system for glider
  • Variable-torsional-rigidity underwater tractor hydrofoil system for glider
  • Variable-torsional-rigidity underwater tractor hydrofoil system for glider

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0060] Such as Figure 4 As shown, it is an underwater tractor including a straight-pull hydrofoil stiffness adjustment system, including a hydrofoil pitching unit, a stiffness adjustment system, a speed sensing unit, and a mounting plate assembly. The hydrofoil pitching motion unit includes a hydrofoil 301, a fixed rotating shaft 302, a motion shaft 303, a spring 304, and a spring connecting pin 305. The stiffness adjustment system includes a steel wire rope 306, a worm gear transmission structure 307, and a motor 308. The speed sensing unit includes The inertial sensor 309, the flow rate sensor 310, and the mounting plate assembly include side plates 311 and other connecting fasteners.

[0061] Both the inertial sensor 309 and the velocity sensor 310 are installed independently, wherein the velocity sensor is installed in front of the underwater tractor to avoid being disturbed by the wake of the hydrofoil.

[0062] The underwater tractor has 6 pitching motion units, and th...

Embodiment 2

[0066] Such as Figure 5 As shown, it is an underwater tractor including a rigid sliding link hydrofoil stiffness adjustment system, including a hydrofoil pitching unit, a stiffness adjustment system, a speed sensing unit, and a mounting plate assembly. The pitching motion unit of the hydrofoil includes a hydrofoil 301, a fixed rotating shaft 302, a moving shaft 303, a spring 304, and a spring connecting pin 305. The stiffness adjustment system includes a linear bearing module 312, an adapter part 313, a sliding link 314, a wire Rod nut mechanism 315 , motor 308 , speed sensing unit includes inertial sensor 309 , flow rate sensor 310 , and mounting plate assembly includes side plate 311 .

[0067] Both the inertial sensor 309 and the flow rate sensor 310 may be strap-down mounted.

[0068] The underwater tractor has 6 pitching motion units, and the fixed rotating shaft 302 is installed on the side plate 311 . There are six slots with a length of 5 cm on the side plates, and ...

Embodiment 3

[0072] Such as Figure 6 As shown, it is an underwater tractor including a straight-pull hydrofoil stiffness adjustment system, including a hydrofoil pitching unit, a stiffness adjustment system, a speed sensing unit, and a mounting plate assembly. The pitching motion unit of the hydrofoil includes a hydrofoil 301, a fixed rotating shaft 302, a moving shaft 303, a spring 304, and a spring connecting pin 305. The stiffness adjustment system includes a steel wire rope 306, a worm and gear transmission structure 307, a motor 308, and a fixed pulley 317. The speed sensing unit includes an inertial sensor 309 and a flow rate sensor 310 , and the mounting plate assembly includes a side plate 311 .

[0073] The third embodiment is roughly the same as the first embodiment, except that the fixed pulley structure is added. After adding the fixed pulley structure, the position of the spring connecting pin 305 can be moved down, thereby preventing the interference between the wire rope 3...

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Abstract

The invention provides a variable-torsional-rigidity underwater tractor hydrofoil system for a glide. The system comprises a water surface floating body ship, a flexible cable, an underwater tractor, a hydrofoil rigidity adjusting system and a sensing unit, a spring is arranged in the underwater tractor to be connected with a hydrofoil, and the hydrofoil shows different pitching rigidities under different spring initial tensile forces, so that different propulsive forces are provided in waves. In the hydrofoil rigidity adjusting system, a motor and a rope are arranged, the movable end of the spring is pulled, and the tensioning force of the spring is adjusted, so that the rigidity of the hydrofoil is controlled, and finally different propulsive forces are obtained. A series connection structure is adopted, and the pitching rigidity of the multiple hydrofoils can be directly controlled through one motor. The sensing unit can sense information such as the flow speed and the pose and feed the information back to the control system, the control system further controls the pitching rigidity of the hydrofoil according to the feedback information, the speed of the wave glider is regulated and controlled, and then the optimal propelling performance of the underwater tractor is achieved.

Description

technical field [0001] The present invention relates to the technical field of ships and ocean engineering, in particular to a variable torsional stiffness underwater tractor hydrofoil system for a glider, especially to a variable torsional stiffness underwater tractor hydrofoil for a wave glider design. Background technique [0002] The wave glider uses solar energy to power the sensor and communication equipment it carries. Through a new type of ocean mobile observation platform that directly converts wave power into forward power, and through the comprehensive utilization of wave energy and solar energy, it can achieve up to one year and tens of thousands of kilometers. The battery life has become a research hotspot at home and abroad. [0003] The wave glider mainly includes three parts, a floating body on the water surface, a connecting flexible cable, and an underwater tractor. Among them, the passive flapping movement of the hydrofoil carried by the underwater tract...

Claims

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Application Information

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IPC IPC(8): B63H19/02B63C11/34B63B35/00
CPCB63H19/02B63C11/34B63B35/00Y02T70/5236
Inventor 陈卫星张永矿文娱赵现朝张卫东高峰
Owner SHANGHAI JIAO TONG UNIV
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