A two-section flexible variant bionic flapping wing aircraft

Abstract

The invention discloses a two-section flexible variant bionic flapping wing aircraft. The flapping wing aircraft comprises a flapping wing driving device, a tail wing, an aircraft body framework, an aircraft body cross beam, a power supply and control module, a skin, and two flapping wing structures which are axially symmetrically arranged on two sides of the aircraft body framework. Each flappingwing structure comprises a main wing, an auxiliary wing, a main wing joint and an auxiliary wing joint; the flapping wing driving device comprises a brushless motor, two gear sets, two cranks and twoconnecting rods; the brushless motor is fixed on the aircraft body framework; an output shaft of the brushless motor is coaxially connected with a gear, and power is transmitted to the two gear sets;the two gear sets are symmetrically distributed on the aircraft body framework, the two cranks are connected with the two gear sets respectively, and one ends of the two connecting rods are connectedwith the two cranks respectively; the other ends of the two connecting rods are respectively connected with the main wings of the two flapping wing structures. The high-bionic-degree flapping wing actions of the two-section flexible variant bionic flapping wing aircraft can be realized, and meanwhile the flying stability is improved.

Description

technical field [0001] The invention relates to the field of aerospace, in particular to a two-stage flexible variant bionic flapping-wing aircraft. Background technique [0002] The bird-like flapping wing aircraft is a new type of aircraft that can fly by flapping its wings like a bird. It has the advantages of small size, light weight, good concealment, good flexibility, simple operation, and easy to carry. It is very attractive. Its application prospects, such as aerial surveillance, intelligence collection, disaster search and rescue, airport bird repellent, etc. [0003] The flapping flight of birds in nature is mainly composed of three basic movements: swinging up and down, twisting and bending and folding. Combined with the flight characteristics of birds, the up and down swing movement is organically combined with the twisting movement, bending and folding movement, so that the flapping wing can generate greater lift and thrust, which can improve aerodynamic effici...

AI Technical Summary

Problems solved by technology

However, by setting the angle limiter, the angle of attack of the flapping wing can only be set at a fixed value, and it cannot be adjusted flexibly according to the incoming flow velocity.

[0008] Most of the existing flapping wing aircraft are single-stage straight flapping wings, which cannot highly imitate the flight of birds, and are not very confusing

In addition, the drive mode of the existing two-stage flapping wing aircraft has many driving parts, large mass, complex structure, and is not easy to miniaturize, and it is difficult to control the hinge joints of the inner wing and the outer wing, and it is difficult to guarantee the flight stability.

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