Bionic micro aircraft with figure-of-eight flapping-wing trail

Abstract

The invention relates to a biomimetic micro air vehicle with 8-shaped flapping tracks, which makes use of a flexible carbon fiber rod and a parylene film as an aerofoil framework and an aerofoil covering skin respectively for a palm-sized micro air vehicle. Even through a flapping (gear connecting rod) driving mechanism is only designed into a single degree of freedom four-bar (mechanism), the linkage of the upward and downward flapping is successfully coupled to flow direction forward and backward vibrations through the material and the shape design of a flexible aerofoil, thus three-dimensional 8-shaped flapping tracks are assembled at the aerofoil tip; and the flapping frequency of the generation of the 8-shaped tracks is close to or even more than 20 Hz, thus a micro air vehicle with a simple structure is formed and can generate the 8-shaped tracks automatically according to the essence of aeroelasticity without getting help from the design of a complicated delicate movement mechanism with multiple degrees of freedom.

Description

technical field [0001] The invention relates to a micro-aircraft, in particular to a bionic micro-aircraft whose flapping trajectory is in the shape of an 8. Background technique [0002] In response to the use of unmanned, remote-controlled micro-aircraft (MAV) in rescue, reconnaissance, surveillance, communication, military or toys, MAVs that imitate the wing-flapping flight of insects or birds have been revealed. [0003] For example, U.S. Patent No. 6,082,671 discloses a multi-mode insect-imitating aircraft (Entomopter), which imitates the flying characteristics of insects to generate lift (lift), but it lacks a mechanism for generating sufficient thrust (thrust), so its flight performance Doubly restricted. [0004] The general micro flapping aircraft (ornithopter) is used to simulate the flapping flight of insects or birds. If it wants to take into account the improvement of its lift and thrust, it must have a bionic flapping and pitching mechanism. The electrical st...

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Problems solved by technology

[0003] For example, U.S. Patent No. 6,082,671 discloses a multi-mode insect-imitating aircraft (Entomopter), which imitates the flying characteristics of insects to generate lift (lift), but it lacks a mechanism for generating sufficient thrust (thrust), so its flight performance Restricted

[0004] The general micro flapping aircraft (ornithopter) is used to simulate the flapping flight of insects or birds. If it wants to take into account the improvement of its lift and thrust, it must have a bionic flapping and pitching mechanism. The electrical structure will become more and more complex, and it needs to rely on the control mechanism. To equip such a complex mechanical, electrical and control device in a miniaturized aircraft will increase the difficulty and cost of production; even its battery or power supply system , there are loads, power usage time, battery life and many other factors to be considered

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