姿控发动机减压阀出口压力偏差计算方法研究

减压阀出口压力偏差对姿控发动机的性能有较大影响，通常所采用的小偏差分析方法因不能有效分离非调整工况下工况偏离和其它干扰因素对发动机性能的相互影响，所计算的减压阀出口压力范围误差较大。本文提出了将工作工况作为影响发动机性能的一项干扰因素，基于姿控发动机系统静态模型，应用系统压力平衡原理计算发动机各工况下干扰因素影响系数的方法，根据计算结果采用随机误差分析方法确定了减压阀的出口压力偏差范围，所得结果符合发动机性能要求。

Research on outlet pressure deviation calculation of pressure reducing valve for attitude control engine

Outlet pressure deviation of a pressure reducing valve is an important factor affecting the performance of an attitude control engine. It is not proper to calculate the outlet pressure by the small perturbation analysis method because this method doesn't calculate the performance deviation under non-rated operation condotion effectively. This paper presents a new method in performance calculation of the attitude control engine by employing the system pressure equilibrium theory based on the system static mo...