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Deformable wing driven based on shape memory alloy

A technology of memory alloy and memory alloy wire, which is applied in directions such as wing adjustment to achieve the effect of simple structure and high aerodynamic performance

Active Publication Date: 2020-02-07
CIVIL AVIATION UNIV OF CHINA
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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.

Method used

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  • Deformable wing driven based on shape memory alloy
  • Deformable wing driven based on shape memory alloy
  • Deformable wing driven based on shape memory alloy

Examples

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Embodiment Construction

[0014] The shape memory alloy-driven deformable wing provided by the present invention will be described in detail below with reference to the accompanying drawings and specific embodiments.

[0015] Such as figure 1 — Figure 4 As shown, the deformable wing driven by shape memory alloy provided by the present invention includes: spar 1, rib 2, front wall 3, rear wall 4, stringers 5, flexible skin 6 and driving device 7; wherein, The two ribs 2 are symmetrically and parallelly arranged in a vertical manner, and a groove 10 is provided in the middle of the inner surface of each rib 2 along the vertical direction; two stringers 5 are arranged in parallel up and down, and the two ends of each stringer 5 A boss 9 that can be inserted into the groove 10 on the rib 2 is formed outward, so that the stringer 5 can move up and down along the groove 10; the spar 1, the front wall 3 and the rear wall 4 are all elongated The plate is arranged vertically, and its two ends are respectivel...

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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...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B64C3/38
CPCB64C3/38
Inventor 张威张超王文波柳阳刘新杰刘兵飞张博利孙艳坤
Owner CIVIL AVIATION UNIV OF CHINA
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