| Citation: | WU Feng, LIU Tao, DENG Ran, et al. Investigation of performance approximate revision methods for engine with adjustable convergence nozzle in ram pressure calibration of altitude simulated test[J]. Journal of Aerospace Power, 2024, 39（10）：20220862 doi: 10.13224/j.cnki.jasp.20220862
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A method of revising the performance of an engine with adjustable convergent nozzle caused by nozzle control deviation in ram pressure calibration of Altitude Simulated Test was presented. According to this method, the correction coefficient was obtained by comparing the test results under ram pressure condition with those under equal ram pressure condition. The approximate correction of calibration test results under the condition of ram pressure was realized. For a turbofan engine, the experiments in altitude test and the overall performance simulation were carried out. The variation of engine performance under nozzle control deviation was obtained, and the correction of calibration test results under ram pressure condition was realized. The results showed that this calibration test method was feasible under the condition of ram pressure, and the difference between the engine thrust and other main performance parameters obtained by the above method and the factory test results was less than 2.0%.
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