Method for gaining service life of helicopter drive system component

A technology of a transmission system and an acquisition method, which is applied in the field of acquiring the life of helicopter transmission system components, can solve the problems of complex surface shape of components, inability to obtain accurate life values ​​of components, and inability to grasp the stress and damage of components in flight in time, and reduce Potential safety hazards, improved safety, and the effect of improved accuracy

Active Publication Date: 2015-02-25
CHINA AVIATION POWER MACHINE INST
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AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to provide a method for acquiring the service life of the components of the helicopter transmission system, to solve the problem of the complicated surface shape of the components of the helicopter transmission system, which makes it difficult to directly determine the load conditions of some parts, and the flight load and flight status are complex and changeable. None of the methods and technologies

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  • Method for gaining service life of helicopter drive system component
  • Method for gaining service life of helicopter drive system component
  • Method for gaining service life of helicopter drive system component

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Embodiment Construction

[0041] The embodiments of the present invention will be described in detail below with reference to the accompanying drawings, but the present invention can be implemented in various ways defined and covered.

[0042] figure 1 It is a structural block diagram of a method for obtaining the life of a helicopter transmission system component in a preferred embodiment of the present invention; figure 2 It is a schematic flow chart of the method for obtaining the service life of helicopter transmission system components in a preferred embodiment of the present invention; image 3 It is a schematic diagram of the position of some strain test points of the tail reducer casing in the preferred embodiment of the present invention.

[0043] Such as figure 1 As shown, the acquisition method of a kind of helicopter transmission system component life of the present embodiment comprises the following steps: a, according to the ground joint test and the flight test of the helicopter to be...

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Abstract

The invention discloses a method for gaining the service life of a helicopter drive system component. Strain test points are determined on the helicopter drive system component to be tested, and estimation data of the service life of the helicopter drive system component to be tested are given; in the process of a ground combined test and a flight test, strain data are obtained from the strain test points; according to the ground combined test and the flight test of a helicopter to be tested under multiple states and multiple load conditions, a criterion for overhaul of the helicopter drive system component to be tested is determined; obtained actual measurement data of the helicopter drive system component are analyzed, and the condition that the strain values of all strain test points of the helicopter to be tested exceed a monitor limit value and a component accumulated fatigue damage value is monitored and analyzed in time; comparison and correction are carried out by combining the estimation data and the actual measurement data, and the service life value of the helicopter drive system component to be tested of the same type is obtained.

Description

technical field [0001] The invention relates to the technical field of helicopter component detection, in particular to a method for acquiring the service life of a helicopter transmission system component. Background technique [0002] The production of helicopter transmission system components used to be through the introduction of foreign technology or through testing and imitation, and the life value of the main components was directly provided by foreign technical data. In recent years, the helicopter transmission system has entered the road of independent design and independent production. It is very important to independently and accurately give the life value of the main components, which requires a lot of experiments and field use. In order to improve the safety of helicopters, many methods and technologies have been adopted at home and abroad, such as nominal stress method, structural detail fatigue rating method, local stress-strain method, high-cycle, low-cycle a...

Claims

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Application Information

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IPC IPC(8): G01M13/02
Inventor 梅庆郭天才薛同博万振华苏楠阳
Owner CHINA AVIATION POWER MACHINE INST
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