Compilation method for general standard test load spectrum of aero-engine

An aero-engine and general-standard technology, which is applied in the field of aero-engine general standard test load spectrum compilation, can solve the problems of large manpower, financial and material resources, time-consuming, and inability to effectively apply aero-engines

Active Publication Date: 2016-05-11
NANJING UNIV OF AERONAUTICS & ASTRONAUTICS
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Problems solved by technology

Whether it is to compile the design load spectrum or the measured load spectrum to predict the life of the engine components, structural form, material requirements or the life of the whole machine, the entire load spectrum preparation process i

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  • Compilation method for general standard test load spectrum of aero-engine
  • Compilation method for general standard test load spectrum of aero-engine
  • Compilation method for general standard test load spectrum of aero-engine

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Embodiment Construction

[0071] The present invention will be further described below in conjunction with the accompanying drawings.

[0072] The first part: the theoretical explanation of the inventive method

[0073] The theories and considerations involved will be described below in conjunction with the implementation steps of the present invention.

[0074] (1) Standardization of mission profile load parameters

[0075] The power state of the aero-engine is divided into five situations: zero, ground idle, air idle, cruise and maximum, and the maximum power state is set to 1, and the other power states are given corresponding values ​​less than 1 in proportion to the maximum power state. Here, generally It will also give the speed change range representing each power state of the engine; the value of these state parameters is given according to the characteristics, design requirements or experience of different types of engines; other load parameters can be calculated based on the power state acco...

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Abstract

The invention discloses a compilation method for a general standard test load spectrum of an aero-engine. The method comprises the following main steps: (1) standardizing a mission profile load parameter; (2) generating a mission profile load parameter sequence; (3) generating a load parameter standard test spectrum of a single mission profile of the aero-engine; and (4) compiling the general standard test load spectrum of the aero-engine by frequency mixing of flight missions. The test load spectrum of the aero-engine, compiled with the method, can serve as a main part life test load of the aero-engine; and based on an original aero-engine load spectrum compilation technology, load requirements of an aircraft in all periods and test conditions during actual flight are comprehensively considered. The test load spectrum of the aero-engine, compiled based on the general standard test load spectrum of the aero-engine, can not only really reflect the change of the load parameter of the aero-engine along with the flight time but also simplify a test load spectrum compilation process and improve the working efficiency.

Description

technical field [0001] The invention relates to a method for compiling a general standard test load spectrum of an aero-engine, which is mainly applied to the compiling of the load spectrum in the life test of the main components of the aero-engine (compressor disc, compressor blade, turbine disc and turbine blade), and is a major tool for the engine. Provide technical support for component troubleshooting, life extension and design. Background technique [0002] At present, the life tests of the main components of aero-engines are carried out under simple load conditions, and the error is relatively large compared with the actual situation. Under the test conditions, in order to better reflect the actual use state of the engine, a standard test spectrum equivalent to the actual load spectrum is used to simulate the actual load. [0003] According to the definition in GJB241-87 General Specifications for Aviation Turbojet and Turbofan Engines: Aeroengine load spectrum is a ...

Claims

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Application Information

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IPC IPC(8): G06F17/50G01M15/00
CPCG01M15/00G06F30/17
Inventor 孙志刚赵盛宋迎东
Owner NANJING UNIV OF AERONAUTICS & ASTRONAUTICS
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