Imitation dragonfly multi-mode conversion micro-miniature unmanned aerial vehicle with turnover airfoils

Abstract

The invention discloses an overturning wing surface dragonfly-imitating multi-mode conversion micro-miniature unmanned aerial vehicle. The unmanned aerial vehicle comprises a fuselage, wings, a wing overturning system, a wing flapping system, a main shaft, a main shaft rotation control system and an empennage, the main shaft is vertically installed at the gravity center position of the fuselage through the main shaft rotation control system, and the wings are distributed on the two sides of the top end of the main shaft, fixedly connected with the wing flapping system through the wing overturning system and driven by the wing flapping system to flap up and down. The empennage is mounted at the tail of the fuselage; when the wings on the two sides are of a central symmetry structure, a flapping rotor wing mode is formed, and the main shaft rotates under the control of the main shaft rotation control system; the wing overturning system controls the wings to be in an axial symmetry structure to form a flapping wing mode after being overturned, and the main shaft stops rotating under the control of the main shaft rotating control system. According to the invention, vertical take-off and landing, spot hovering and rapid take-off can be realized.

Description

technical field [0001] The invention relates to the technical field of bionic aircraft, in particular to a micro-miniature unmanned aerial vehicle with a reversible wing surface imitating a dragonfly with multi-mode conversion. Background technique [0002] At present, micro-aircraft in various countries are in the stage of development but fewer finished products. The main role of micro-UAVs is to perform reconnaissance, detection, and intelligence acquisition tasks in some small places, which has a relatively large advantage over traditional UAVs. [0003] The three typical MAV layout forms at the present stage have their own characteristics and advantages, but their shortcomings are also obvious. Fixed-wing MAVs have obvious advantages in high-speed long-range cruise flight, but cannot achieve hovering and low-speed flight; rotor MAVs have hovering and low-speed flight capabilities, but require additional devices to overcome anti-torque problems. In addition, both fixed-...

AI Technical Summary

Problems solved by technology

Fixed-wing MAVs have obvious advantages in high-speed long-distance cruise flight, but cannot achieve hovering and low-speed flight; rotor MAVs have the ability to hover and low-speed flight, but need additional devices to overcome anti-torque problems

In addition, both fixed-wing and rotary-wing MAVs face the problem of significantly reduced aerodynamic force and control efficiency at low Reynolds numbers

Flapping wing MAV can generate enough lift at low Reynolds number, but it needs to consume more energy; at the same time, the mechanism of flapping wing generating lift is complicated, and it is difficult to design the mechanical structure in practical applications

These all restrict the design, manufacture and application of flapping wing MAV

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