Core engine test performance correction method

Abstract

The invention belongs to the field of core engine tests, and relates to a core engine test performance correction method, which comprises the following steps of: before a core engine test is carried out, carrying out a pretreatment test, and measuring a flow parameter of a reference spray pipe and a spray pipe expansion ratio under the pretreatment test so as to obtain a corresponding relation between a parameter in the test and a reference parameter; according to the proportional relation between the reference parameters and the test parameters, it is determined that different correction coefficients are set corresponding to different core engine performance parameters under different conversion rotating speeds and spraying pipe areas, and in this way, in the actual test, different envelope points are subjected to different envelope point tests; the performance parameters of the core machine under the envelope point can be accurately obtained only through the corresponding correction coefficient; compared with an original test method, tests of different envelope points can be carried out under the condition of the same spray pipe state, the performance condition of the core engine is obtained through the correction method, the test efficiency is improved, the test cost is reduced, the evaluation accuracy is improved, and meanwhile the method is more intelligent.

Description

technical field [0001] The present application belongs to the field of core machine testing, and particularly relates to a method for correcting core machine test performance. Background technique [0002] The core engine is the most important part of the engine, including the components and systems with the highest temperature, highest pressure and highest speed in the engine system. Therefore, the core engine development is also the most important link in the engine development process. During the development of the core machine, a large number of core machine and high-altitude platform tests are required to determine the performance of the core machine at a typical point of the work envelope. The performances that need to be evaluated mainly include the core engine cycle work, total pressure ratio, total temperature ratio, component characteristics, and the matching of the core engine working line, but do not need to be evaluated for accompanying test pieces such as inta...

AI Technical Summary

Problems solved by technology

[0006] The purpose of this application is to provide a core machine test performance correction method to solve the problems of low implementation efficiency and poor evaluation accuracy caused by the need for multiple nozzles when performing tests at different typical state points in the prior art

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