Method for determining time between overhauls of aero-engine

A technology for aero-engine and overhaul life, which is applied in special data processing applications, instruments, electrical digital data processing, etc., can solve the problems of not very comprehensive and systematic consideration, poor life accuracy and rationality, etc., and achieve economical improvement , the overhaul life is accurate, and the effect of ensuring safety and reliability

Active Publication Date: 2014-02-19
AECC AVIATION POWER CO LTD
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AI Technical Summary

Problems solved by technology

However, in the past engine life determination process, the consideration of various factors was not very comprehensive and systematic, resulting in poor accuracy and rationality of the life determination

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment

[0028] The invention of the present invention has been applied to the turbofan-9 engine, and the engine's first overhaul life and the minimum overhaul interval period (belonging to the overhaul life, see Appendix A for specific definitions) have been determined, and the effect is good. The specific process is as follows:

[0029](1) Sampling evaluation: 3 sets of 200 hours, 2 sets of 400 hours, 3 sets of 500 hours, 5 sets of 600 hours, 3 sets of 650 hours, 2 sets of 850 hours, 1 set of 1000 hours, and 2 sets of 1050 hours. A total of 22 engines with different life spans were returned to the factory for inspection and evaluation. The problems and faults found in the inspection were analyzed and judged, and the life evaluation conclusion was drawn: the engine was in good condition after 650 hours of use, and could meet the service requirements of 700 hours; Safety, before the service life is officially determined, the engine will be refurbished in advance) and then used for 400...

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Abstract

The invention belongs to the technology of determination of time between overhauls of an aero-engine and relates to the improvement of a method for determining the time between overhauls of an aero-engine, in particular to a method for determining the time between the overhauls of the aero-engine. The method for determining the time between the overhauls of the aero-engine is characterized by comprising the following steps of sampling estimation, performance degradation analysis, reliability analysis, analysis of the relation between the service life of each part with service life control and the service life of the aero-engine, analysis of the economical efficiency of maintenance, and determination of the time between the overhauls of the aero-engine. By the adoption of the improved method for determining the time between the overhauls of the aero-engine, the accuracy of determination of the time between the overhauls of the aero-engine is improved, the safe reliability of the aero-engine is guaranteed, and the economical efficiency of use and maintenance of the aero-engine is improved. The improved method for determining the time between the overhauls of the aero-engine is suitable for the Chinese management mode of the time between the overhauls of the aero-engine.

Description

technical field [0001] The invention belongs to the life-defining technology of aero-engines, and relates to the improvement of the method for determining the refurbishment life of aero-engines. Background technique [0002] The methods for determining the life of aero-engines mainly include the long-term test run method, the pioneer batch prototype inspection method, and the main component life determination method ("Guidelines for determining the life of main components of aviation turbojet and turbofan engines", Su Qingyou, Aviation Industry Press, 2004). The long-term test run life determination method mainly determines the life of the engine by sampling the hours of long-term bench test run of the whole engine. Among the engines whose service life has been determined in our country, the long-term test run life determination method is mainly used, and it is more commonly used on Soviet engines. This method is quick to determine the life, and the life management is simp...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F19/00
Inventor 吕康海董红联蒋学军阎庆安陈养惠赖建和唐治虎滕晓飞
Owner AECC AVIATION POWER CO LTD
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