航空发动机室内台架推力测量修正方法研究

Correction Methods of Thrust Measurement for Aeroengine Indoor Bench

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。

Due to no standard engine,an aeroengine test bench could not be calibrated periodically to determine thrust correction factor.The thrust correction value was obtained by statistical analysis method.The effect of pneumatic impulse,nozzle negative pressure and wind resistance on the engine thrust was calculated by the aerodynamic flow parameter test.The rationality of thrust correction value was analyzed by statistical data.