Deformable wing driven based on shape memory alloy

Abstract

The invention provides a deformable wing driven based on a shape memory alloy. The deformable wing comprises a spar, ribs, a front wall, a rear wall, purlins, a flexible skin and a drive device. The drive device comprises a rigid box body, a sliding block, a conversion mechanism, a shape memory alloy wire, an air spring, a first connecting rod, a second connecting rod, a third connecting rod, a heating resistance wire and an electric insulation protective cover. According to the deformable wing driven based on the shape memory alloy, the shape of the wing is quantitatively changed through control over the temperature of the shape memory alloy wire, and the wing can obtain different lift-drag ratios. The deformable wing is simple in structure, meanwhile, through introduction of the shape memory alloy material, the shape of the wing type can be intelligently changed, and the wing type can obtain higher pneumatic performance.

Description

technical field [0001] The invention belongs to the technical field of aerospace equipment, in particular to a deformable wing driven by a shape memory alloy (SMA). Background technique [0002] The airfoil of the aircraft wing designed by the traditional method can only have good aerodynamic performance in a certain fixed flight state, but cannot maintain good aerodynamic performance throughout the flight process. In order to optimize the aerodynamic performance of the airfoil under various flight conditions, the design of the deformable airfoil came into being, which can change the shape of the airfoil under different flight conditions, so as to obtain better aerodynamic performance. Deformable airfoils should not only easily control the deformation, but also have high controllability and stability, which poses a high challenge to the current wing design and manufacturing technology. However, no deformable wings driven by shape memory alloys have been reported. Contents...

AI Technical Summary

Problems solved by technology

Deformable airfoils should not only easily control the deformation, but also have high controllability and stability, which is very challenging for the current wing design and manufacturing technology

However, no deformable wings driven by shape memory alloys have been reported.

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