A variant wing with variable w-shape, m-shape and straight wing

Abstract

The invention aims at providing a variant aerofoil capable of transforming into a W-shaped wing, an M-shaped wing or a flat wing. The variant aerofoil comprises an inner side deformable frame, an outer side deformable frame, a rigid front edge, a rigid rear edge, a variable rigidity skin, an actuating device, a mechanical linkage device, a mounting bracket, a fuselage spar, a rib and a small variable rigidity skin, wherein the inner side deformable frame is hinged with the outer side deformable frame, the inner side deformable frame is hinged with the fuselage, the mechanical linkage device is arranged at the connecting part of the inner side deformable frame and the outer side deformable frame, the actuating device is arranged on the inner side deformable frame, one side of the outer side deformable frame close to the fuselage is provided with the mounting bracket, and the variable rigidity skin is arranged at the connecting part of the inner side deformable frame and the outer side deformable frame. The synchronous change of the aerofoil flat shape and the aerofoil area is realized by adopting the simple structure so that the aircraft is suitable for the different flight missions; and compared with the traditional variable sweep aerofoil, the variant aerofoil provided by the invention is capable of bearing greater overload and the possibility of improving the maneuverability of the aircraft is provided.

Description

technical field [0001] The invention relates to the field of aviation technology, in particular to a variable W-shaped / M-shaped and straight wing variant wing. Background technique [0002] In order to make the aircraft adapt to different flight missions and have multiple functions such as short take-off and landing, high-speed cruise, etc., the concept of variant aircraft has been proposed internationally, and the flight performance can be optimized for different flight states by changing the area and shape of the lifting body. [0003] For example, the U.S. F-14 variable-sweep wing fighter can increase the sweep angle of the wing when flying at high speed. However, due to the overall rotation of the wings of this type of variant aircraft, it is difficult to arrange mounts on the wings; and the stability of the aircraft changes greatly during the variant process, resulting in greater stability and trim resistance of the aircraft under certain working conditions. In additio...

AI Technical Summary

Problems solved by technology

Similar to the F-14, this type of morphing aircraft usually requires a large morphing driving force, and when smart materials are used as the morphing actuation device, its disadvantages are more obvious

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