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A flapping wing driven by shape memory alloy

A memory alloy and wing film technology, applied in the field of aircraft, can solve the problem of large overall size of the aircraft

Active Publication Date: 2020-10-27
BEIHANG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The present invention aims to solve the problem that the overall size of the aircraft is relatively large when the flapping wings of the existing flapping-wing aircraft are directly installed on both sides of the fuselage when it is in a non-working state. A structure capable of retracting the flapping wings as required

Method used

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  • A flapping wing driven by shape memory alloy
  • A flapping wing driven by shape memory alloy
  • A flapping wing driven by shape memory alloy

Examples

Experimental program
Comparison scheme
Effect test

Embodiment

[0031] A flapping wing driven by a shape memory alloy such as figure 1 As shown, it includes a frame 1 , a fixing device 2 , a membrane 3 , a wire 4 , a power supply 5 and a controller 6 .

[0032] The flapping wing frame 1 is made of a shape memory alloy and has two shapes under power-on and power-off conditions. The frame 1 forms a closed loop with the power supply 5 and the controller 6 through the wire 4, and the controller 6 controls the power on and off of the frame. By energizing and de-energizing, the shape memory alloy of the frame 1 produces different shapes to drive the flapping wings to retract. In the power-off state, the shape of frame 1 is as follows: figure 1 As shown, the frame 1 forms a plane curve at this moment, and the two ends of the curve of the frame 1 are concentrated at the root of the flapping wing. The shape of the frame 1 in the electrified state is as follows: image 3 As shown, the frame 1 is crimped and tightly attached to the surface of the...

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Abstract

The invention relates to a flapping wing driven by a memory alloy, including a frame, a wing film, a power supply and a controller; the frame is made of a shape memory alloy, and presents different shapes under power-on and power-off conditions, so The above-mentioned membrane is made of flexible material and is arranged on the plane formed by the frame. The controller controls the power supply to realize the power-on and power-off of the frame, and the frame forms a flat or curved surface in the power-off state. , the flapping wing is in the unfolded state, curled and tightened under the power-on state, the flapping wing is in the retracted state, and the flapping membrane and the frame are retracted and retracted synchronously; in the flying state, the flapping wing membrane and the frame are used as the lifting surface for The aerodynamic lift is generated under flapping, the overall size of the aircraft is significantly reduced by the present invention, and its concealment performance is enhanced, the mechanism device is simple, and it is easy to process and assemble.

Description

technical field [0001] The invention relates to the field of aircraft, in particular to a mechanism design that utilizes a thin sheet of shape memory alloy to drive flapping wings for retracting and retracting. Background technique [0002] Since the 1990s, with the continuous improvement of traditional aircraft design technology, people's continuous exploration of the flight and swimming mechanism of animals, and the rapid development of microelectronics technology, the field of micro air vehicle design has developed more and more rapidly. It has broad application prospects in national economic construction and other aspects, and has been applied to tasks such as reconnaissance, communication, exploration, and assistance in rescue under complex environmental conditions. [0003] At this stage, micro-flapping-wing aircraft is the main direction of micro-aircraft development. Most of the flapping wing aircraft invented at present are directly installed on both sides of the a...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B64C33/02
CPCB64C33/02
Inventor 吴江浩周超潘强张艳来孙茂
Owner BEIHANG UNIV