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

A technology for wing leading edge and bird strike, applied in wings, aircraft parts, motor vehicles, etc., can solve problems such as front beam structure damage, skin tearing, wing leading edge deformation, etc., and achieve bird strike resistance. Improve, increase the structural rigidity, protect the effect of the beam web

Active Publication Date: 2019-05-10
NORTHWESTERN POLYTECHNICAL UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

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.

Method used

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

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Embodiment Construction

[0030] This embodiment is used for the anti-bird strike wing leading edge of a certain type of aircraft, including wing leading edge skin 4, additional skin 5, front beam 3, small front beam 2, a plurality of front ribs 6, a plurality of rear Rib 7 and two side ribs 2. in:

[0031] The two side ribs 1 are respectively fixed on the upper surfaces of the two ends of the front beam 3 . The small front beam 2 is located on the upper part of the two side ribs, and the two ends of the small front beam are respectively riveted with the inner surfaces of the two side ribs. The rear ribs 7 are arranged between the upper surface of the front beam 3 and the lower surface of the small front beam 2, and each rear rib is inclined so that a "V" shape or an inverted shape is formed between two adjacent rear ribs. "V"-shaped included angle; the angle of said included angle is 60°. A plurality of front ribs 6 are evenly distributed on the upper surface of the small front beam 2 . The vertic...

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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 ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B64C3/18B64C3/26
CPCB64C3/18B64C3/26B64U30/10
Inventor 索涛李玉龙王振郝鑫刘军汤忠斌
Owner NORTHWESTERN POLYTECHNICAL UNIV
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