Variable-curvature wing trailing edge

Abstract

The invention relates to the field of variable airplane structural design, in particular to a variable-curvature wing trailing edge. The variable-curvature wing trailing edge comprises a herringbone structure made of an elastic material, an upper skin, a lower skin, heating pieces, a wingtip and a flexible honeycomb, wherein the upper skin and the lower skin are both made of a shape memory alloy and fixedly arranged on the upper surface and the lower surface of the herringbone structure, the shape memory alloy of the upper skin is configured to be lengthened when the heating temperature is higher than the preset temperature and recover and keep the original shape when the heating temperature is lower than the preset temperature, and the shape memory alloy of the lower skin is configured tobe shortened when the heating temperature is higher than the preset temperature and recover and keep the original shape when the heating temperature is lower than the preset temperature; the heatingpieces are arranged on the upper skin and the lower skin; and the position among the skins and the herringbone structure is filled with the flexible honeycomb. By the adoption of the variable-curvature wing trailing edge, through differential motion deformation of the upper skin and the lower skin, the wing trailing edge is driven to deflect, the out-of-plane stiffness of a whole wing trailing edge structure is greatly improved, and a variable airplane structure bearing requirement is met.

Description

technical field [0001] The invention relates to the field of variant aircraft structure design, in particular to a trailing edge of a variable camber wing. Background technique [0002] Through intelligent design and control, variant technology can adaptively change important parameters such as wing shape, thickness, and camber according to tasks and environments, so that the aircraft can obtain ideal aerodynamic characteristics in different flight states, taking into account the aircraft's The use performance at different speeds and solving the contradictions in the aerodynamic layout design of modern aircraft play a very important role in improving the overall performance of military aircraft. [0003] There are two types of changes to the wing shape by morphing aircraft technology: in-plane deformation and out-of-plane deformation. The deformation in the plane of the wing includes variable span length, variable chord length and variable rear angle; the deformation outsid...

AI Technical Summary

Problems solved by technology

[0012] The purpose of the present invention is to provide a variable camber trailing ed

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