补燃循环发动机推力调节研究

推力调节是提高液体火箭发动机适应性和运载火箭性能的有效措施。研究认为补燃循环发动机最佳的推力调节方案是调节预燃室中较少组元的流量。通过控制预燃室的温度，改变涡轮泵的功率，最终达到调节推力的目的。由于补燃循环发动机推力调节时。对预燃室温度的影响较大，推力向上调节幅度不宜过大，但可进行较大幅度的向下调节。上述推力调节方案对发动机比冲的影响很小，可以忽略不计；对发动机混合比的影响也较小，只需在大范围推力调节时考虑；推力调节速率不宜过快，应小于20％／s。

Investigation on the thrust regulation of staged combustion cycle engine

Thrust regulation is an effective way for improving the adaptability of liquid rocket engine and launch vehicle. It is an emphasized characteristic for advanced liquid rocket engine. Staged combustion cycle is the most advanced cycle of liquid rocket engine. Therefore in the staged combustion cycle engine study thrust regulation should be introduced. The best way of thrust regulation for staged combustion cycle engine is regulating the less flowrate propellant of the preburner. Considering the effect of the...