双组元高室压脉冲火箭发动机工作特性分析

为了研究高室压脉冲火箭发动机的工作特性,在分析其工作原理的基础上建立了数学模型,其中燃烧室和挤压腔采用零维模型,喷管采用一维准稳态模型,采用四阶Runge-Kutta法进行了求解.结果表明,燃烧室的最大压强和平均压强都高于推进剂供给压强,而挤压过程中进出燃烧室的质量不守恒是压强升高的原因.与常规液体火箭发动机相比较表明,脉冲火箭发动机的真空比冲提高了7.5%,而喉部面积仅为其10.2%.

Study on the characteristics of bipropellant-fueled pulse rocket engine with high combustion chamber pressure

By using a moving injector,the combustion chamber pressure of pulse rocket engine is much higher than feed system supply pressure.In order to analyze the characteristics of bipropellant-fueled pulse rocket engine,a mathematics model was presented.The zero-dimensional models were used for combustion chamber and extrusion rooms,and the one-dimensional,quasi-steady model was used for nozzle flow.Using N2O4 and MMH as propellant,the equation sets were calculated with fourth-degree Runge-Kutta method.According t...