Novel flapping wing propelling device and working process

Abstract

The invention discloses a novel flapping wing propelling device and a working process. The device comprises a flapping wing body, a pair of tail sealing plates are hinged to the tail edge of the flapping wing body, the upper surface and the lower surface of the tail of the flapping wing body are each provided with a step, a step surface is formed, a plurality of telescopic rods are installed between the tail sealing plates and the step surfaces, and the telescopic rod acts to control opening and closing of the tail sealing plate. The tail sealing plate can be adaptively adjusted according to the movement position of the flapping wing, on one hand, the pressure difference between the upper surface and the lower surface of the flapping wing is greatly increased, and the corresponding lift force is obviously increased, so that the component force of the lift force increased in the vertical direction in the horizontal direction is also increased, and the propulsion characteristic of the flapping wing is improved; and on the other hand, due to the existence of the tail sealing plate, the flow field characteristics around and at the tail part of the flapping wing are improved, the flow separation at the tail edge of the flapping wing is gradually slowed down, the energy dissipation is reduced, and the input power of the system is greatly reduced.

Description

technical field [0001] The invention relates to the technical field of propulsion equipment, in particular to a novel flapping wing propulsion device and its working process. Background technique [0002] Flapping wing propulsion is another propulsion method that is different from traditional rotary machinery (propeller, turbine engine) and jet propulsion. [0003] With the rise of research on micro air vehicles and underwater robots in recent years, this propulsion method has shown more and more advantages. This is mainly due to the low propulsion efficiency of traditional propellers at low Reynolds numbers, and this flapping unsteady motion can not only achieve high lift that fixed wings cannot achieve, but also has a certain degree of propulsion efficiency compared with traditional methods. Superiority. Birds flying in the sky and fish swimming underwater all use this type of unsteady motion to achieve propulsion. It is the excellent flying and swimming abilities of the...

AI Technical Summary

Problems solved by technology

[0004] The traditional oscillating wing propulsion method is mainly composed of heave motion in the vertical direction and pitching motion around its own rotation axis. The oscillating wing based on the above-mentioned traditional motion method can only obtain a maximum of 60% under the optimal combination of motion parameters. Left and right propulsion efficiency, currently there is no room for higher optimization

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