A variable camber wing based on composite material corrugated sheet flexible skin

Abstract

A variable-camber wing based on a flexible skin of a composite material corrugated plate is composed of a multi-section wing section, a rotating shaft, a hinge structure, a composite material corrugated plate and an elastic body layer. The connection relationship is as follows: each wing section is connected by the end of the rotating shaft, and the adjacent wing sections are covered with composite material corrugated plates. The composite material corrugated plates are respectively fixed on the platforms of the front wing section and the rear wing section. Each composite material corrugated plate A hinged structure is provided in the middle to connect with the corresponding wings, and the elastomer layer is bonded to the outer surface of the corrugated board made of composite material. The invention utilizes the characteristic that the flexible skin of the corrugated board of composite material has large deformation ability along the corrugation direction, designs a variable-camber wing structure, and uses a hinge structure to impose out-of-plane constraints on the flexible skin of the corrugated board of composite material. The wing can realize the function of variable camber, and the flexible skin of the composite corrugated board will not have out-of-plane deformation beyond the allowable range, and can maintain a good aerodynamic shape.

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. Background technique [0002] 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 aerodynami...

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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