A wing leading edge capable of improving aircraft anti-bird strike performance

Abstract

A wing leading edge that can improve the anti-bird impact performance of the aircraft. A small front beam is added inside the wing leading edge, and the front ribs arranged on the small front beam are closely attached to the additional skin. During the impact, it has a strong supporting effect on the front edge skin and the additional skin, which increases the structural rigidity and maintains the structural shape as much as possible; during the deformation process, the additional skin will drive the front rib to undergo plastic deformation, thereby absorbing more energy . The rear rib with an inclined angle can not only increase the structural rigidity, but also help to buffer the impact of the bird body and protect the beam web. The invention fully considers the weight requirements of the aircraft structure, and reasonably arranges the weight of the structure. Compared with the original structure, the thickness of the front skin and ribs is halved, which is used to increase the small front beam, additional skin, and redesign wing ribs. The weight of the structure is reduced by 3% compared with the original structure, which effectively improves the anti-bird impact performance of the leading edge of the wing.

Description

technical field [0001] The invention relates to the field of structural design of civil aircraft, in particular to a wing leading edge capable of improving the anti-bird impact performance of the aircraft. Background technique [0002] A bird strike accident refers to an accident in which an aircraft such as an airplane flying in the air collides with a flying bird. With the rapid development of the civil aviation industry, civil aircraft bird strikes have become one of the most serious safety threats to civil aviation. According to relevant reports of United Airlines, from 1990 to 2008, American civil aviation reported 89,727 collisions between animals and civil aviation aircraft, 97.4% of which were caused by birds. Relevant data show that the windward side of the aircraft, including the windshield, radome, engine, wing leading edge and tail leading edge, is the most vulnerable to bird strikes. There are often oil circuit systems or control lines inside the leading edge ...

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.

Images