Aircraft brake system low temperature test method

A brake system and low-temperature test technology, which is applied in the low-temperature test field of civil aircraft brake systems, can solve the problems of inability to verify low-temperature adaptability and low-temperature life

Inactive Publication Date: 2017-11-24
XIAN AVIATION BRAKE TECH
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  • Description
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  • Application Information

AI Technical Summary

Problems solved by technology

[0026] In order to overcome the inadequacies in the prior art that cannot verify the low-temperature adaptability and low-temperature life within the service life, the present invention proposes a low-temperature test method for the aircraft brake system

Method used

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  • Aircraft brake system low temperature test method
  • Aircraft brake system low temperature test method
  • Aircraft brake system low temperature test method

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Embodiment Construction

[0078] In this embodiment, a low-temperature test is carried out on a brake system of a civil aircraft. The service life of the brake system is 5000 landings / 10 years, whichever comes first. The low-temperature storage and low-temperature working test profiles shall be formulated according to the life requirements.

[0079] This embodiment uses the test equipment shown in Table 1.

[0080] Table 1 Summary of Low Temperature Test Equipment for Civil Aircraft Braking System

[0081]

[0082] The matching products of the civil aircraft braking system described in this embodiment are shown in Table 2.

[0083] Table 2 Supporting Products of Civil Aircraft Braking System

[0084]

[0085]

[0086] The concrete process of this embodiment is:

[0087] Step 1. Determine the sampling principle and the treatment method for low temperature faults during the test.

[0088] One set of brake system is randomly selected to represent the model for low temperature test. If no fail...

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Abstract

The invention provides an aircraft brake system low temperature test method, and aims at exciting the low temperature fault hidden trouble of a brake system in the service life. The test time is determined according to the low temperature time in the life requirement, the test low temperature value is determined according to the low temperature value in the service life and all the products of the brake system are installed in a low temperature test box according to the system connection mode, and low temperature hydraulic oil is piped into the brake system under the condition that the temperature is low temperature. A low temperature test profile is determined according to the low temperature test time and the low temperature value. The low temperature test profile meets the low temperature condition in use. The aircraft brake system low temperature test method is suitable for exciting the low temperature fault hidden trouble of the brake system in the service life so that the limitation of environment stress screening can be compensated, the test period can be shortened and the test cost can be reduced.

Description

technical field [0001] The invention relates to the field of environmental testing of civil aircraft brake systems, in particular to a low-temperature test method for civil aircraft brake systems. Background technique [0002] Environmental tests, including low temperature, high temperature, vibration, temperature and height, must be carried out in the development process of the existing civil aircraft braking system. Passing all the environmental tests specified in the development requirements is one of the conditions for installation and flight. [0003] Status abroad: [0004] The standards adopted in the environmental testing of foreign civil aircraft products include: [0005] The US standard DO-160 "Environmental Conditions and Test Procedures for Airborne Equipment" includes low temperature, high temperature, vibration, and temperature altitude tests. Passing all the test items stipulated in the agreement means that the environmental test has passed. Each product i...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01M13/00
CPCG01M13/00
Inventor 乔建军乔子骅
Owner XIAN AVIATION BRAKE TECH
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