Aircraft with changeable wing shape

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...

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 complex wing motion mechanism, heavy weight, high development cost, difficult operation, and low flight performance in existing deformed wing aircraft

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