Deformable wing driven by shape memory alloy and its deformation control method

Abstract

The invention relates to the technical field of aerospace, in particular to a deformable wing driven on the basis of a shape memory alloy, and a deformation control method of the deformable wing. Thedeformable wing comprises multiple groups of wing brackets, multiple groups of rotary connection components, multiple active deformation skins and heating elements, wherein multiple groups of wing brackets are arranged in sequence along a wing extension direction; adjacent wing brackets are rotatably connected through the rotary connection components; the active deformation skins are used for connecting the adjacent wing brackets and covering the rotary connection components; the active deformation skins are shape memory alloy skins; and the heating elements are arranged on the active deformation skins and can cause the temperatures of the active deformation skins to rise to deform to drive the wing brackets to rotate on the basis of the rotary connection components, and two adjacent groups of wing brackets can form a preset included angle [alpha]. Through the introduction of an intelligent material, the wing can bear loads and also can conveniently control deformation to improve the flight performance of an airplane.

Description

technical field [0001] The invention relates to the field of aerospace technology, in particular to a deformable wing driven by a shape memory alloy and a deformation control method thereof. Background technique [0002] At present, the main problem of aircraft operating cost is to control the consumption of energy. Therefore, a core issue of reducing fuel consumption during flight is to improve the flight performance of the aircraft. Parameters such as height, weight, and speed of the aircraft are constantly changing during flight. Adjusting the appropriate wing shape for different parameters can make the aircraft have better aerodynamics. Changing the shape of the wings during flight can save a plane several percent in fuel. At the same time, the deformation of the wing shape is of great significance to reduce noise. Wing deformation requires that the wing structure can be easily and controllably deformed, while being able to withstand aerodynamic loads, which puts forw...

AI Technical Summary

Problems solved by technology

[0004] The main purpose of the present invention is to provide a deformable wing driven by shape memory alloy, aiming to solve the problems of difficult control of wing deformation and limited aerodynamic load at the same time

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