Aircraft with changeable wing shape

A technology of aircraft and wings, applied in the field of aircraft, can solve the problems of complex wing motion mechanism, difficult operation, high development cost, etc., and achieve the effects of reducing risk, reducing overall quality, and reducing maintenance costs
CN100429120CInactive Publication Date: 2008-10-29HARBIN INST OF TECH
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
HARBIN INST OF TECH
Publication Date
2008-10-29
Estimated Expiration
Not applicable · inactive patent

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Abstract

An airplane able to change the shape of wing is composed of an airplane body and two wings consisting of fixed wing with one end fixed to airplane body, slide wing installed in the skeleton of said fixed wing and with a roller moving in a spiral slot on a cylindrical body, and the cylindrical body and shape memory alloy bar, which are fixed to each other and installed in the skeleton of said fixed wing. Said shape memory alloy bar is used as the drive source for changing wing shape.
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Description

technical field

[0001] The present invention relates to an aircraft capable of changing the shape of the wing. Background technique

[0002] Wings are the main components of an aircraft that can be reconfigured in flight. Deliberately changing the wing shape in flight (such as wing sweep, changing wingspan and camber, etc.) can effectively increase the flight performance of the wing. Among them, the effect of changing the wingspan and wing area is the most prominent. For example, an aircraft usually requires a high aspect ratio and a large wing area when cruising, while a low aspect ratio and a small wing area are required for an aircraft to fly at high speed. Small aspect ratio and large swept wings are widely used in modern supersonic aircraft. The supersonic drag is small, but the aerodynamic efficiency is low at low speed, and the lift characteristics are not good. Wings in turn make supersonic performance worse. Variable aspect ratio aircraft can solve the contradic...

Claims

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