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Undercarriage with oil-gas buffer type longitudinal buffeting reduction device

A vibration damping device, oil-gas buffer technology, applied in landing gear, transportation and packaging, aircraft parts, etc., can solve problems such as the proposed vibration damping scheme in the structural design of the landing gear, so as to improve dynamic stability and reduce vibration amplitude. and vibration load, the effect of solving the turbulence phenomenon

Pending Publication Date: 2019-05-14
NANJING UNIV OF AERONAUTICS & ASTRONAUTICS
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AI Technical Summary

Problems solved by technology

[0004] 2008,12(8):627-637.) studied the adjustment of the control parameters of the brake system, but did not propose a vibration reduction scheme from the structural design of the landing gear
At present, there are still few researches on the design of landing gear buffeting and vibration reduction devices at home and abroad.

Method used

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  • Undercarriage with oil-gas buffer type longitudinal buffeting reduction device
  • Undercarriage with oil-gas buffer type longitudinal buffeting reduction device
  • Undercarriage with oil-gas buffer type longitudinal buffeting reduction device

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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] attached figure 1 It is a schematic diagram of the structure of the landing gear with the oil-air buffer longitudinal buffeting damping device. Such as figure 1 As shown, the landing gear with the oil-pneumatic buffer type longitudinal buffeting damping device of the present invention includes the main landing gear, the wheel, the upper resistance strut 4, the heading strut and the oil-pneumatic buffer A; the main landing gear includes Main landing gear strut outer cylinder 1 and main landing gear piston rod 7, the main landing gear piston rod 7 is slidably installed in the main landing gear strut outer cylinder 1, and can be mounted in the main landing gear strut outer cylinder 1 Movement; the top of the main landing gear strut outer cylinder 1 is fixedly installed with the fuselage. An organic wheel is installed at the end of the p...

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Abstract

The invention discloses an undercarriage with an oil-gas buffer type longitudinal buffeting reduction device. An oil-gas buffer is adopted to replace a resistance supporting rod on the lower part of acourse supporting rod of a main undercarriage body, and a set of resistance supporting rod mechanism is additionally arranged between a main undercarriage outer barrel and the course supporting rod to alleviate the longitudinal vibration phenomenon of the main undercarriage body. The additionally-arranged course supporting rod can bear the course torque of an undercarriage supporting column, by utilizing the elasticity and damping characteristics of the oil-gas buffer, vibration energy transmitted from the ground and a braking device in the braking and sliding process of the undercarriage canbe rapidly absorbed, vibration force is reduced, and the dynamic stability performance of an undercarriage system is improved.

Description

technical field [0001] The invention relates to the field of longitudinal chattering of aircraft landing gear, in particular to a landing gear with an oil-gas buffer type longitudinal chattering and damping device. Background technique [0002] Longitudinal buffeting of aircraft landing gear is caused by the change of braking torque of the wheel caused by the operation of the anti-skid brake system, which causes periodic changes in the speed of the wheel, resulting in longitudinal vibration of the landing gear. The brake device is usually installed on the main landing gear wheel of the aircraft, so the brake buffeting phenomenon mostly occurs on the main landing gear. With the use of high-strength steel for the landing gear of modern aircraft and the design requirements for weight reduction, the flexibility of the landing gear and the vibration problems caused by it have become increasingly prominent. Some military aircraft and UAV models in my country have experienced landi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B64C25/58
CPCY02T50/40
Inventor 尹乔之张钊魏小辉聂宏葛东东陈虎
Owner NANJING UNIV OF AERONAUTICS & ASTRONAUTICS
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