Conceptual design model of rocket base combined cycle propulsion system

The Rocket-Based-Combined-Cyele 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-dimensional 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 solved by implicit RK algorithm, the results agree with the literature.