Aircraft engine installation intersection position deviation processing method and engine thrust pin

A technology of aircraft engine and processing method, which is applied in the field of aircraft to achieve significant practical value and save economic costs

Active Publication Date: 2020-01-17
SHENYANG AIRCRAFT DESIGN INST AVIATION IND CORP OF CHINA
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The purpose of this application is to provide a method for processing the position deviation of the aircraft engine installation intersection, to solve or alleviate at least one of the problems in the background technology

Method used

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  • Aircraft engine installation intersection position deviation processing method and engine thrust pin
  • Aircraft engine installation intersection position deviation processing method and engine thrust pin
  • Aircraft engine installation intersection position deviation processing method and engine thrust pin

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Embodiment Construction

[0025] In order to make the purpose, technical solution and advantages of the application more clear, the technical solution in the embodiment of the application will be described in more detail below in conjunction with the drawings in the embodiment of the application.

[0026] Such as figure 1 As shown, the present application firstly provides a method for processing the position deviation of an aircraft engine installation intersection point, the method specifically includes:

[0027] First, determine the position deviation information of the engine installation intersection point

[0028] The position deviation of the engine installation intersection point is caused by the cumulative error in the manufacturing and assembly process. It is necessary to determine the relative displacement and angle information between the design value of the engine thrust pin mounting hole axis and the actual manufacturing value under the state of manufacturing deviation.

[0029] For examp...

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PUM

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Abstract

The invention relates to an aircraft engine installation intersection position deviation processing method. The method comprises the steps that deviation information between the design of the axis ofan engine thrust pin installation hole and the actual situation is determined; determining an engine thrust pin structure according to the deviation information, and establishing a detail finite element model of the engine thrust pin structure; applying a load and a boundary condition in the detail finite element model to obtain a static result of the engine thrust pin; determining a fatigue weakpart of the engine thrust pin according to the static force result, determining a stress concentration coefficient of the weak part, and determining whether the engine thrust pin meets the fatigue strength requirement or not according to the stress concentration coefficient and a stress-life curve of the engine thrust pin. The engine installation intersection position deviation processing method can safely and reliably solve the progress problem during aircraft production and assembly, saves huge economic cost for replacing aircraft frame sections and engine parts, and has great practical value.

Description

technical field [0001] The present application belongs to the technical field of aircraft, and in particular relates to a method for processing the position deviation of an aircraft engine installation intersection point and an engine thrust pin. Background technique [0002] In the entire process of aircraft manufacturing and assembly, each process may produce manufacturing deviations. If manufacturing deviations occur in the partial assembly or even the final assembly process, large parts or even the entire aircraft will be scrapped. Such losses , which is generally unacceptable and inconceivable. [0003] Therefore, when dealing with the manufacturing deviation problem, it will become more and more difficult as the aircraft manufacturing process progresses. During aircraft production, assembly and maintenance, due to the accumulation of manufacturing errors, the failure of the engine installation intersection position deviation occurs from time to time, and the failure o...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F30/15G06F30/23
CPCY02T90/00
Inventor 刘汉海郑伟杨忠会王翔宇孙超
Owner SHENYANG AIRCRAFT DESIGN INST AVIATION IND CORP OF CHINA
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