中等推力航空发动机喷口控制方法对比研究

为提高中等推力航空发动机工作性能,对其喷口控制方法进行对比分析,并通过台架试验对喷口等落压比和喷口转差控制方法进行试验验证。结果表明:相比于等落压比控制方法,转差控制方法更利于精确调整发动机在节流状态下的性能,且可降低发动机耗油率,更适合作为中等推力发动机的喷口控制计划;对全包线的各典型点进行验证,转差控制方法仍能满足发动机的控制性能要求,且实施方便、效果好。

Comparative Study on Nozzle Control Methods of Medium Thrust Aeroengine

In order to improve the working performance of medium thrust aeroengine, the comparative study on nozzle control methods were carried out, and the control method of equal pressure drop ratio and slip control of nozzle was verified by bench test. The results show that the slip control method is more conducive to accurately adjusting the performance of the engine in throttling state than the equal pressure drop ratio control method,and can reduce the specific fuel consumption of the engine, which is more suitable for the nozzle control plan of the medium thrust engine. The typical points of the full-envelope are verified, and the slip control method can still meet the requirements of engine control performance,and the implementation is convenient and effective.