简介:变推力液体火箭发动机可以增大工作适应性和可操作性.对变推力发动机要求在变推力时具有高的比冲、稳定可靠和需要的响应特性.本文讨论了双组元变推力液体火箭发动机比冲的影响因素和在变推力情况下获得尽可能高的比冲的关键技术,介绍了登月舱下降发动机LMDE的比冲特性.
简介:摘要某发动机在飞行过程中时推力脉动,经分析认为喷口摆动是推力脉动的直接原因,通过喷口的控制原理进行分析,找到引起发动机喷口周期性变化的原因,从而快速排除此次故障。
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