Variable camber wing based on composite corrugated plate flexible skins

Abstract

A variable camber wing based on composite corrugated plate flexible skins is composed of a plurality of wing sections, rotating shafts, hinge structures, composite corrugated plates and elastomer layers. The connection relationship is as follows: the wing sections are connected end to end through the rotating shafts, the composite corrugated plates cover between the adjacent wing sections, the composite corrugated plates are respectively fixed on platforms of the front wing section and the rear wing section, each hinge structure is arranged in the middle of each composite corrugated plate andis connected with the corresponding wing section, and the elastomer layers are adhered to the outer surfaces of the composite corrugated plates. The characteristic that the composite material corrugated plate flexible skins have large deformability in the corrugated direction is utilized to design the variable camber wing structure, out-of-plane constraint is applied to the composite corrugated plate flexible skins through the hinge structures, the wing can achieve the variable camber function, out-of-plane deformation outside the allowable range of the composite corrugated plate flexible skins can be avoided, and a good aerodynamic configuration can be maintained.

Description

technical field [0001] The invention provides a variable-camber wing based on a flexible skin of a composite corrugated board, which belongs to the field of structural design. [0002] technical background [0003] In the field of aviation, "variant aircraft" is an aircraft that can enhance the performance of the mission profile by changing its geometric shape, and the most critical technology is the morphing wing. The variable camber wing is a kind of variant wing. Compared with the traditional wing, the variant wing with smooth and continuously variable camber has higher aerodynamic efficiency. Composite corrugated board has large tensile deformation capacity in the corrugation direction, good bending deformation capacity, and high stiffness in the direction perpendicular to the corrugation. Therefore, composite corrugated board is suitable as a flexible cover for variable camber wings. Skin. However, due to the unevenness of the composite corrugated board and the poor ae...

AI Technical Summary

Problems solved by technology

In addition, the out-of-plane stiffness of the composite corrugated sheet flexible skin is small. When aerodynamic load is applied, or when the bending deformation of the wing causes a certain side of the skin to be compressed, the composite corrugated sheet flexible skin will have a large out-of-plane stiffness. Deformation, resulting in destruction of the aerodynamic shape of the wing

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