涡轮泵超低工况性能研究

对于泵压式变推力发动机和先进的冲压发动机,需要涡轮泵变工况工作,涡轮泵变工况性能是该类发动机研究的一个重点。结合上面级验证性发动机试车,对游机涡轮泵变工况的性能和稳定性进行分析研究。通过泵全流量特性试验和汽蚀试验,得出泵能够在额定流量点25%处稳定工作的结论。对涡轮工况变化后的燃气参数、入口压力、出口压力及效率进行分析,认为涡轮也能够稳定工作。给出了游机涡轮泵可以参加验证性试车的结论,并得到了发动机试车的验证。

Research on the turbo-pump performance under ultra-low operation condition

The capability of turbo-pump working in variable conditions is required and important for pump-pressurized variable thrust rocket engine and ramjet propulsion. Combining with a test of the upper stage rocket engine, the performance and stability of the turbo-pump at low condition are studied in this paper. Through the full flow characteristic and cavitation tests of pump, it is concluded that the pump can work stably in 25% rated flow condition. The analyses of gas parameter, inlet pressure, outlet pressure...