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Method for improving reliability of undercarriage system of civil aircraft

A landing gear and reliability technology, which is applied in the field of improving the reliability of the landing gear system of civil aviation airliners, can solve the problems of nail wear and affect the continuity of sensor lines, etc., so as to reduce the wrong replacement of parts, reduce the wear speed, and prolong the working time Effect

Pending Publication Date: 2022-04-12
中国南方航空股份有限公司
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AI Technical Summary

Problems solved by technology

After a detailed investigation by the aircraft manufacturing company and the airline company, it was found that the root cause was that the vibration of the aircraft caused the wear of the pins in the corresponding proximity sensor plugs, which in turn affected the continuity of the sensor lines.

Method used

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  • Method for improving reliability of undercarriage system of civil aircraft
  • Method for improving reliability of undercarriage system of civil aircraft
  • Method for improving reliability of undercarriage system of civil aircraft

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Embodiment Construction

[0029] A method for improving the reliability of the landing gear system of a civil aviation passenger aircraft according to the present invention will be further described in detail below in conjunction with specific embodiments and accompanying drawings.

[0030] The model involved in the following embodiments is the Airbus A320. The structural diagrams of the proximity sensor plug and the docking plug of the Airbus A320 landing gear system are as follows: figure 2 , 3 shown. For this model, we have taken the following measures to improve the reliability of its landing gear system:

[0031] Hardware: reinstall image 3 The female pin at the C position of the butt plug, so that image 3 mating plugs in and figure 2 The connection of the proximity sensor plugs in the aircraft can keep them in a better balance during the vibration process of the aircraft, thereby effectively reducing the wear speed of the insertion pins, prolonging the working time of the proximity senso...

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Abstract

The invention relates to a method for improving reliability of an undercarriage system of a civil aviation passenger plane, which aims at airbus A320 series airplanes or other civil aviation passenger planes of which undercarriage system proximity sensors adopt connection modes similar to those of the airbus A320 series airplanes on the basis of not changing circuit connection of the undercarriage system proximity sensors of the airbus A320 series airplanes. The on-wing working time of the proximity sensors of the undercarriage system is prolonged by supplementing the vacant plug pins on the plugs for connecting the proximity sensors of the undercarriage system, the fault occurrence rate of the proximity sensors of the undercarriage system is reduced, and the working reliability of the undercarriage system is improved.

Description

technical field [0001] The invention relates to a method for improving the reliability of a landing gear system of a civil aviation aircraft. Background technique [0002] In recent years, there have been frequent failures associated with the proximity sensors of the landing gear system of the Airbus A320 series aircraft, especially the following four proximity sensors installed on the main body of the aircraft that are subject to large vibrations: the left main lift door closure sensor of system 1 ( 27GA), the right main lift door closing sensor (26GA) of system 1, the left main lift door closing sensor (29GA) of system 2, and the right main lift door closing sensor (28GA) of system 2. 27GA and 29GA are installed on the hatch locking mechanism in the left wheel well, and 26GA and 28GA are installed on the hatch locking mechanism in the right wheel well. The landing gear control system is equipped with two control computers, which are respectively referred to as system 1 an...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B64C25/18B64F5/60
Inventor 张丰韩冬李延林徐立洋夏立岳厉涛
Owner 中国南方航空股份有限公司
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