Aircraft with changeable wing shape

An aircraft and wing technology, applied in the field of aircraft, can solve the problems of complex wing motion mechanism, high development cost, and low flight performance, and achieve the effects of reducing risk, reducing maintenance cost, and high flight quality

Inactive Publication Date: 2007-09-05
HARBIN INST OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

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 comple

Method used

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  • Aircraft with changeable wing shape
  • Aircraft with changeable wing shape

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Experimental program
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Example Embodiment

Specific embodiment 1: This embodiment is described with reference to Figs. 1 and 2. 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. A wing 2 consists of a fixed wing 3, a sliding wing 4, a shape memory alloy rod 5, a cylinder 6, and a pulley 7. One end of the fixed wing 3 is fixed to the fuselage 1, and the skeleton of the wing 3 is fixed A cylinder 6 and a shape memory alloy rod 5 fixed to the cylinder 6 are arranged along the inner edge of the fixed wing 3 in the direction from the tail end to the head end. The outer surface of the cylinder 6 is provided along the length direction of the cylinder 6. Spiral groove 8, the sliding wing 4 is installed in the frame of the fixed wing 3, the sliding wing 4 is equipped with a pulley 7 at the head end, and the pulley 7 is installed in the spiral groove 8 to fix The materials used for the wing 3 and the sliding wing 4 are the same as those ...

Example Embodiment

Specific embodiment 2: This embodiment will be described with reference to FIGS. 1 and 2. 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, One of Cu-Sn shape memory alloy rods, Mn-Cu shape memory alloy rods, Fe-Pt shape memory alloy rods or Fe-Mn-Si shape memory alloy rods. The shape memory alloy rod is subjected to external torsion 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 transformation from austenite to martensite, and the torsional deformation returns to its original shape. With this arrangement, the above shape memory alloy rod has the characteristics of large torque, large reversible torsion angle, fast response speed, ...

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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 The invention relates to an aircraft. Background technique Wings are the main components of an aircraft that are reconfigurable in flight. Purposefully changing the shape of the wing in flight (such as wing sweep, changing the 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 airplane usually requires a high aspect ratio and a large wing area when cruising, but a low aspect ratio and a small wing area are required for an airplane to fly at high speed. The small aspect ratio and large swept wings widely used in modern supersonic aircraft have small supersonic resistance, but the aerodynamic efficiency is low at low speeds, and the lift characteristics are not good. Wings would again degrade supersonic performance. The variable aspect ratio aircraft can solve the contradiction between high and low speed performance requ...

Claims

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Application Information

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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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