Abstract: The Rocket Based Combined Cycle Propulsion system and the development of it’s conceptual design model were briefly described. Based on the analysis of current model’s shortcomings, an one dimensienal performance computation model was established by applying quasi one dimensional flow model and chemistry model. In this model, multiple elements, such as variable cross section area, ejecting, fuel injecting, mixing, combustion and so on were considered. The model was solven by implicit RK algrithm, the results agree with the literature.

Key words: Rocket engine;Ejector ramjet engine;Comp

摘要： 简述了火箭基组合循环 (RBCC)推进系统及相应概念设计模型的发展与不足 ,并应用准一维流动理论及化学反应动力学理论建立了RBCC一维性能预估数学模型。该模型耦合了有限化学反应速率模型 ,考虑了包括变几何截面积、引射流动、燃料喷注、混合、燃烧及摩擦损失等多种影响流动的因素 ,并采用变步长半隐式多步龙格 库塔方法进行了数值求解。所得结果与文献提供的实验结果相一致

关键词: 火箭发动机;引射式冲击发动机;复合式发动机;概念研究;设计方案;性能预测