Integrated movement flapping wing

A wing and overall technology, applied in the field of full-motion flapping wings, can solve problems such as low efficiency, difficult to meet different needs of twisting amount, low power efficiency, etc., and achieve the effect of reducing flight noise, research and development difficulty and training difficulty

Pending Publication Date: 2018-04-20
魏朝阳
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Active twisting not only makes the structure and transmission more complicated, but also the amount of twisting is difficult to meet the different needs of different flow angles of each wing section in the span direction.
Passive twisting is very inefficient
[0006] In theory, the principle of biological flapping wing flight is not mature enough
[0007] The unpowered gliding equipment that has appeared includes glider, hang glider, paraglider, and gliding suit. The technology is relatively mature, but it does not use its own energy to compensate the consumption of kinetic energy or potential energy during flight.
Powered paragliders and powered hang gliders still use propellers, and the power efficiency is not high

Method used

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  • Integrated movement flapping wing
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Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0030] The implementation of the flexible connection of the wings and other loads can adopt a retractable soft suspension type or a movable pull rod type.

[0031] The implementation of variable pitch and roll angles of the wing can change the angular relationship between the load gravity line and the wing, that is, change the positional relationship between the center of gravity and the center of lift on the vertical or horizontal axis. Controllable ailerons and flaps can also be installed on both sides of the wing to change the position of the center of lift. It is also possible to add tail fins to other load structures to stabilize the angular attitude of the load body, and on this basis to change the angular relationship between the load body and the wing.

[0032] The dynamic and coordinated control of the various movements of the wing is the key to realize the flapping wing flight and improve the power efficiency. For UAVs, a special flight measurement and control syste...

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PUM

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Abstract

A full swing flapping wing. Use the movable connecting mechanism ② to make the entire wing ① make periodic movements with vertical components relative to other loads ③. At a certain flight speed, the wing flaps down to form a dive, the angle of attack is still positive to continuously provide lift, and when the elevation angle is negative, the forward kinetic energy is increased. When the wing flaps upward, it still continuously provides lift at a positive angle of attack. At this time, the vertical distance from the center of mass of the load to the wing is extended to reduce the wing load, thereby reducing the loss of forward kinetic energy. The whole flapping wing avoids the spanwise complexity of the angular flapping wing and improves the flapping effect of the entire wing. An example of an embodiment of the present invention is a man-powered flapping-wing aircraft, which can also be used for long-duration, low-energy or low-noise drones, and even near-space solar-powered aircraft.

Description

technical field [0001] The invention relates to a fully moving flapping wing, including a basic structural form and a corresponding flight mode, and is especially suitable for manpower aircraft and unmanned aerial vehicles with priority in power efficiency or low noise. Background technique [0002] There is still a big gap in the power efficiency of various man-made powered aircraft compared with biological flight such as birds and insects. [0003] There have been many successful flights of bionic bird flapping aircraft, but the power efficiency is still not high enough, and there are few practical applications except for entertainment. [0004] The human-powered aircraft that has occurred has several classes such as fixed-wing formula, rotary-wing formula and flapping-wing formula. Fixed-wing and rotary-wing human-powered aircraft have large structural mass, low air actuation efficiency of the propeller (or rotor) at low speeds, and complex power transmission structures,...

Claims

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Application Information

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IPC IPC(8): B64C33/02
CPCB64C33/02
Inventor魏朝阳
Owner魏朝阳