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为解决缺少标准发动机而不能对试车台进行定期校准来确定试车台推力修正值的问题,通过数据统计分析方法,得到台架的发动机推力修正值;通过台架气动流场参数测试,计算出气动冲量、喷口负压和迎风阻力等对发动机推力的影响,并根据验证统计数据,分析了推力修正值的合理性。
In order to solve the problem of lacking of standard engine and unable to calibrate the test bench periodically to determine the correction value of the test bench thrust, the engine thrust correction value of the test bench is obtained through the statistical analysis of the data. The pneumatic flow field parameter test of the bench calculates the pneumatic Impulse, nozzle negative pressure and windward drag on the thrust of the engine, and based on the verification statistics, the rationality of the thrust correction is analyzed.