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Method for drop test for verifying buffer performance of undercarriage

A technology of aircraft landing gear and test method, which is applied in the field of drop shock test for the verification of the cushioning performance of the landing gear of a mobile platform aircraft, and can solve problems such as not clearly pointed out.

Inactive Publication Date: 2014-08-13
SHENYANG AIRCRAFT DESIGN INST AVIATION IND CORP OF CHINA
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AI Technical Summary

Problems solved by technology

The national military standard specification is the test design basis for the land-based aircraft landing gear drop test, but it does not clearly indicate the content and method to be verified for the aircraft landing gear drop test on the mobile platform

Method used

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  • Method for drop test for verifying buffer performance of undercarriage
  • Method for drop test for verifying buffer performance of undercarriage
  • Method for drop test for verifying buffer performance of undercarriage

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Embodiment Construction

[0022] The present invention will be described in further detail below through specific examples.

[0023] 1. Requirements for test piece and drop table

[0024] The test piece is the main landing gear of an aircraft that has passed the delivery acceptance test, and is composed of the components shown in Table 1. Initial Inflation Pressure of Tires: Platform Use: Land based use: The surface of the wheel contact table should be able to simulate the service environment:

[0025] Platform use - the steel plate whose surface can simulate the friction characteristics of the mobile platform road surface and whose thickness is δ ≥ 10mm;

[0026] Land-based use - ordinary concrete countertops;

[0027] The surface of the wheel contact platform of the test bench should be capable of installing a steel rod simulating the arresting cable—diameter φ = 38 - 1.5 0 mm ...

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Abstract

The invention belongs to the field of undercarriage drop tests and relates to a method for a drop test for verifying the buffer performance of an undercarriage of a movable platform. The method is characterized in that the requirement for drop test design of the undercarriage of the movable platform is stipulated. The method has the advantages that when the method is used for designing the undercarriage drop test, the buffer performance of the undercarriage of the movable platform can be correctly and fully verified and a conclusion showing whether the buffer performance of the undercarriage is qualified or not is given; the method is applied to design of the undercarriage drop test of one movable platform and the effectiveness of the method is verified by the undercarriage drop test and a flight test.

Description

technical field [0001] The invention belongs to the field of drop shock tests of aircraft landing gears, and relates to a drop shock test method for verifying the cushioning performance of landing gears of mobile platforms. Background technique [0002] For the development of aircraft landing gear, the landing gear drop test is the main method to verify whether the performance of the landing gear buffer system meets the design requirements, and it is a verification test item that must be completed for the first flight of the aircraft and the finalization of the design. At present, there are no mature test verification items and methods for the landing gear drop test of mobile platform aircraft in China. The national military standard is the test design basis for land-based aircraft landing gear drop tests, but it does not clearly specify the content and methods that need to be verified for the aircraft landing gear drop test on the mobile platform. Therefore, it is necessar...

Claims

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Application Information

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IPC IPC(8): G01M7/08
Inventor 曹奇凯隋福成王成波姚念奎
Owner SHENYANG AIRCRAFT DESIGN INST AVIATION IND CORP OF CHINA
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