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Airplane landing gear with anti-buffeting device

An aircraft landing gear and landing gear technology, applied in landing gear, aircraft parts, transportation and packaging, etc., can solve problems such as fatigue cracks, aggravate bumps, fractures, etc., reduce vibration amplitude and vibration load, and improve dynamic stability. Effect

Pending Publication Date: 2019-05-21
NANJING UNIV OF AERONAUTICS & ASTRONAUTICS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Landing gear buffeting will aggravate the bumping phenomenon during rides, which may cause damage to related components, fatigue cracks or fractures, shorten the service life of the landing gear system, and may also induce aircraft ground roll safety accidents

Method used

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  • Airplane landing gear with anti-buffeting device
  • Airplane landing gear with anti-buffeting device
  • Airplane landing gear with anti-buffeting device

Examples

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Embodiment Construction

[0022] The present invention will be further explained below in conjunction with the accompanying drawings and specific embodiments.

[0023] figure 1 It is a structural schematic diagram of the aircraft landing gear with anti-chattering device, figure 2 It is the left view of the aircraft landing gear with anti-bounce device. Such as figure 1 , 2 As shown, the aircraft landing gear with anti-chattering device of the present invention comprises main landing gear, wheel, upper resistance strut 2 and lower resistance anti-chattering device A; And the main landing gear piston rod 6, the main landing gear piston rod 6 is slidably installed in the main landing gear strut outer cylinder 1, and can move in the main landing gear strut outer cylinder 1; the main landing gear The top of the pillar outer cylinder 1 is fixedly installed with the fuselage. An organic wheel is installed at the end of the piston rod 6 of the main landing gear through a bearing, and the wheel includes a...

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PUM

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Abstract

The invention discloses an airplane landing gear with an anti-buffeting device. The airplane landing gear comprises a main landing gear body, airplane wheels and an upper resistance supporting rod (2); the airplane landing gear further comprises a lower resistance anti-buffeting device (A), the upper end of the lower resistance anti-buffeting device is hinged to the upper resistance supporting rod(2), and the lower end of the lower resistance anti-buffeting device is hinged to the lower end of a main landing gear supporting column outer cylinder (1); the lower resistance anti-buffeting device(A) comprises an upper connector (31), a lower connector (31), a rigid spring sheet damper (a) and a rigid spring sheet damper (b), and the rigid spring sheet damper (a) and the rigid spring sheet damper (b) are fixed between the upper and lower connectors. According to the airplane landing gear, dissipation of the landing gear under the vertical sliding buffeting state on the ground is achieved,and the situation of severe buffeting during slide of an airplane on the ground is avoided; vibration energy induced by a low-frequency brake can be effectively absorbed, the vibration amplitude andvibration load are greatly lowered, and the problem is solved that due to buffeting, the jolt phenomenon during taking is aggravated, parts are damaged, and the service life is shortened.

Description

technical field [0001] The invention relates to the field of longitudinal buffeting of aircraft landing gear, in particular to an aircraft landing gear with an anti-chattering device. Background technique [0002] The low-frequency brake-induced vibration of the aircraft's main landing gear is also called chattering, and the vibration frequency of chattering is usually below 30 Hz. During the entire taxi braking process after the main landing gear wheels touch the ground, under the action of the braking system, the change of the ground bonding force caused by the braking force excitation, the flexibility of the main landing gear strut, the connection between the main landing gear and the fuselage Due to factors such as non-rigid connection and tire elasticity, chattering occurs when the landing gear is subjected to changing ground tire forces. Landing gear buffeting will aggravate the bumping phenomenon during riding, which may cause damage to related components, fatigue cr...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B64C25/34B64C25/58
Inventor 尹乔之张钊魏小辉聂宏梁涛涛李天童
Owner NANJING UNIV OF AERONAUTICS & ASTRONAUTICS
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