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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

Inactive Publication Date: 2008-10-29
HARBIN INST OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to provide an aircraft capable of changing the shape of the wing, which can solve the problems of complex wing motion mechanism, heavy weight, high development cost, difficult operation and low flight performance in existing deformed wing aircraft

Method used

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  • Aircraft with changeable wing shape
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specific Embodiment approach 1

[0008] Embodiment 1: Combining figure 1 and figure 2 This embodiment is described. This embodiment consists of a fuselage 1 and two wings 2; the two wings 2 are symmetrically arranged on the left and right sides of the fuselage 1, and each wing 2 consists of a fixed wing 3, a sliding A wing 4, a shape memory alloy rod 5, a cylinder 6, and a pulley 7 are composed; In the direction of the end, a cylinder 6 and a shape memory alloy rod 5 fixedly connected to the cylinder 6 are sequentially installed. The outer surface of the cylinder 6 is provided with a spiral groove 8 along the length of the cylinder 6. The sliding wing 4 is installed in the skeleton of the fixed wing 3, the head end of the sliding wing 4 is equipped with a pulley 7, and the pulley 7 is installed in the spiral groove 8, and the materials used for the fixed wing 3 and the sliding wing 4 are the same as the The material of the existing wing is the same; the heating method of the shape memory alloy rod 5 is to ...

specific Embodiment approach 2

[0009] Specific implementation mode 2: Combining figure 1 and figure 2 Describing the present embodiment, the shape memory alloy rod 5 of this embodiment is a TiNi shape memory alloy rod, a Cu-Zn shape memory alloy rod, a Cu-Al-Ni shape memory alloy rod, a Cu-Sn shape memory alloy rod, a Mn-Cu shape memory alloy rod One of shape memory alloy rod, Fe-Pt shape memory alloy rod or Fe-Mn-Si shape memory alloy rod. Under the action of external torsional force (the ambient temperature is lower than the martensite transformation temperature of the shape memory alloy), the shape memory alloy rod produces a certain torsional deformation (torsional strain is less than 10%), and then the shape memory alloy rod is heated , the shape memory alloy rod undergoes the transformation from austenite to martensite, and the torsional deformation returns to the original shape. In this way, the above shape memory alloy rod has the characteristics of large torque, large recoverable torsion angle, ...

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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.

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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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B64C3/56
Inventor 冷劲松刘彦菊刘晓伟孙启健
Owner HARBIN INST OF TECH
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