Aircraft landing gear oil and gas type buffer filling amount monitoring method

A landing gear buffer, oil and gas buffer technology, applied in the direction of instruments, measuring devices, etc., can solve the problems such as the inability to measure the buffer oil, so as to reduce the maintenance workload, improve the replenishment accuracy, and improve the take-off and landing safety. Effect

Inactive Publication Date: 2019-04-12
CHENGDU AIRCRAFT DESIGN INST OF AVIATION IND CORP OF CHINA
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] A method for monitoring the filling amount of oil-gas buffer is proposed to solve the problem of measuring pressure gauge loss and improve measurement accuracy; to solve the problem that the oil in the buffer cavity cannot be measured, so as to realize real-time monitoring and on-demand maintenance

Method used

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  • Aircraft landing gear oil and gas type buffer filling amount monitoring method
  • Aircraft landing gear oil and gas type buffer filling amount monitoring method
  • Aircraft landing gear oil and gas type buffer filling amount monitoring method

Examples

Experimental program
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Embodiment Construction

[0026] A temperature and pressure sensor (2) is installed on the landing gear buffer (1), and the inner cavity of the temperature and pressure sensor (2) is communicated with the inner cavity of the buffer (1), and is isolated and sealed from the outside.

[0027] When the aircraft tire is off the ground, the pressure P1 and the temperature T1 of the buffer cavity are measured by the temperature and pressure sensor, and S1 is measured with a caliper (the measurement standard can be selected according to the specific structure). When the aircraft is stopped, measure the pressure P2 and temperature T2 of the buffer cavity with a temperature and pressure sensor, and measure S2 with a caliper (the measurement standard can be selected according to the specific structure, but should be consistent with S1).

[0028] The pressure in the buffer cavity P1 is the pressure value that needs to be monitored. According to formula (5), the amount of oil to be refilled V can be calculated oil .

[00...

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Abstract

The invention discloses an aircraft landing gear oil and gas type buffer filling amount monitoring method. A temperature and pressure sensor (2) is mounted on a landing gear buffer (1), an inner cavity of the temperature and pressure sensor (2) communicates with an inner cavity of the landing gear buffer (1) and is isolated with the outside and sealed, the temperature and pressure of the inner cavity of the landing gear buffer (1) and the compression amount of the landing gear buffer (1) are measured, and the oil liquid amount needing to be replenished is obtained. The accuracy of oil fluid replenishment of the buffer can be improved, the maintenance workload of a landing gear is decreased, and the safety of aircraft take-off and landing is improved.

Description

Technical field [0001] The invention belongs to the field of aircraft landing gear monitoring, and in particular relates to a method for monitoring the filling amount of an air-fuel type buffer of an aircraft landing gear. Background technique [0002] The landing gear oil and gas buffer is a special device that absorbs the impact energy of the road surface during take-off, landing and taxiing. The buffer works under heavy load and severe environmental conditions for a long time. If oil and gas leaks, the buffering performance of the landing gear will decrease or even fail, causing hidden dangers to the safety of the aircraft. [0003] In order to prevent problems before they happen, field maintenance personnel need to regularly perform operations such as measuring and supplementing air pressure and replenishing oil. At present, a mechanical pressure gauge is used to measure air pressure. This method requires opening the inner cavity of the buffer to draw out the gas in the inner ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01D21/02
CPCG01D21/02
Inventor 范哲谷云峰赵世春方勇刘远平单忠茂
Owner CHENGDU AIRCRAFT DESIGN INST OF AVIATION IND CORP OF CHINA
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