Leading edge capable of improving bird impact resistance of airplane

Abstract

The invention relates to a leading edge capable of improving bird impact resistance of an airplane. A small front beam is added into the leading edge, front ribs are distributed on the small front beam, and an additional skin is tightly attached; when the leading edge meets bird impact, a stronger support effect on a front edge skin and the additional skin is achieved; thus, structural rigidity is improved, and structural appearance is kept as far as possible; in a deforming process, the additional skin can drive the front ribs to generate plastic deformation, so that more energy is absorbed. Rear ribs with an inclined angle can improve structural rigidity and are beneficial to buffering bird impact and protecting web plates. According to the leading edge disclosed by the invention, a requirement of an airplane structure on weight is fully taken into consideration, and structural weight is reasonably distributed; compared with an original structure, the thickness of the front edge skin and the thicknesses of the ribs are reduced by half to be used for adding the small front beam and the additional skin to design wing ribs again; structural weight is reduced by 3% compared with the original structure, so that the bird impact resistance of the leading edge is effectively improved.

Description

Technical field [0001] The invention relates to the field of civil aircraft structure design, in particular to a wing leading edge capable of improving the bird strike resistance of the aircraft. Background technique [0002] A bird strike refers to an accident that occurs when an aircraft or other aircraft flying in the air collides with flying birds. With the rapid development of the civil aviation industry, bird strikes of civil aircraft have become one of the most serious security threats to civil aviation. According to a United Airlines report, between 1990 and 2008, American civil aviation reported 89,727 collisions between animals and civilian aircraft, 97.4% of which were caused by flying birds. Relevant data show that the windward side of the aircraft, including the aircraft windshield, radome, engine, leading edge of the wing and the leading edge of the tail, are the most vulnerable parts to bird strikes. There are often oil systems or control lines inside the front e...

AI Technical Summary

Problems solved by technology

[0005] In order to overcome the problems that the leading edge of the wing undergoes severe deformation or even the skin is torn and the front beam structure is greatly damaged after the bird strikes, the present invention proposes a leading edge of the wing that can improve the anti-bird strike performance of the aircraft.

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