Unmanned aerial vehicle deformable wing structure based on memory alloy negative poisson ratio unit body

Abstract

The invention belongs to the technical field of unmanned aerial vehicle structural materials, and particularly relates to an unmanned aerial vehicle deformable wing structure based on a memory alloy negative poisson ratio unit body. The structure comprises an aircraft body, a NiTi memory alloy skeleton structure, a wing skin, an internal heating system, a heat insulation layer, an intelligent sensing system and a temperature sensor, wings taking NiTi memory alloy skeleton structures as main bodies are mounted on two sides of the fuselage; the outer layer of the NiTi memory alloy skeleton structure is coated with the wing skin, and an inner heating system used for heating the NiTi memory alloy skeleton structure is arranged in the NiTi memory alloy skeleton structure. The wing structure hasthe beneficial effects that the traditional mechanical deformation mode that a connecting rod mechanism is driven by a motor and the like is changed, and the traditional mechanical action of the rearedge of each discrete wing is canceled, so that the resistance and the noise are reduced, the wing structure is simple, the wing maintenance difficulty and the wing maintenance cost are reduced, andthe traditional fixed wing structure can be replaced.

Description

technical field [0001] The invention belongs to the technical field of unmanned aerial vehicle structural materials, and in particular relates to an unmanned aerial vehicle deformation wing structure based on memory alloy negative Poisson's ratio unit body. Background technique [0002] At present, the parameters such as height, weight and speed of the aircraft are not fixed during flight. In order to make the aircraft have better aerodynamic performance, it is hoped that different parameters can be adjusted according to different parameter changes when designing the shape of the wing. Wing shape. Research has found that changing the shape of a wing during flight can save a plane several percent in fuel. At the same time, the deformation of the wing shape is of great significance to reduce the noise. [0003] During the deformation process of the aircraft, its aerodynamic performance should be fully considered, so try not to deform it too rough and discontinuously. At pres...

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Problems solved by technology

[0006] And because the materials of the wing and the fuselage are different, the existing wing is inconvenient to be fixedly installed with the fuselage, and it is difficult to disassemble, and it is inconvenient to maintain and replace. Therefore, the installation, disassembly and maintenance of the existing deformed wing are also deformation machines. Important Problems Wings Need to Overcome

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