Design of a Foldable Flapping Wing and Fixed Wing Coupling Aircraft

Abstract

The invention discloses a foldable flapping wings and fixed wings coupling-structured aircraft design. Foldable flapping rods are arranged on the leading edges of the flapping wings, wherein the foldable flapping rods comprise inner, middle and outer three-section rod-shaped structures connected through hinges. When the aircraft flies, the flapping rods are unfolded into a rectilinear figure to drive the flapping wings to flap up and down to generate lift force and thrust; when the aircraft lands, the flapping rods are folded into U shape, so as to remarkably decrease the feature size of the aircraft; the fixed wings adopt light shell structures; when the aircraft flies, the shell structures on the two sides are unfolded above the flapping wings and function as a lifting surface for the fixed wings, so that the aerodynamic efficiency of the aircraft is effectively improved; after the flapping wings are folded into U shape, the shell structures on the two sides are folded into a firm and tight half-surrounded shell structure and the folded flapping rods and other components of the aircraft are covered inside the half-surrounded shell structure, so that the occupied space of the aircraft is reduced and meanwhile the integral safety of the aircraft is significantly improved; the aircraft is convenient to store and transport.

Description

technical field

[0001] The invention belongs to the technical field of micro-aircraft design and manufacture, and in particular relates to a design method and manufacturing technology of a micro-aircraft combining foldable flapping wings and fixed wings. Background technique

[0002] In 1992, a research report on future military technology submitted by the US RAND Corporation to the US DARPA (Defense Advanced Research Project Agency) first proposed the concept of micro air vehicles. Compared with conventional unmanned aerial vehicles, micro-miniature aerial vehicles have the advantages of small size, light weight, low-cost flying platform, convenient manipulation, flexible maneuvering, low noise, and good concealment. It has a very broad application prospect, which has attracted widespread attention from all over the world.

[0003] Traditional micro-aircraft can be divided into three categories according to flight characteristics: fixed-wing, rotary-wing and flapping-wing....

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