Preliminary study on hypersonic airbreathing engine performance

Scramjet is a key technology in developing the hypersonic vehicle. Hypersonic missiles, aircraft and aerospace plane are based on scramjet and significantly important to future space battle and transportation. Thermodynamic cycle efficiency of hypersonic airbreathing engine is analyzed using thermal engine closed cycle analysis, a quasi one-dimensional performance calculation model of hypersonic airbreathing engines is developed by one-dimensional flow approaches using the entire set of control volume conservation equations, and the influence of some potentially important parameters are analyzed. The quasi one-dimensional performance calculation approach can be used as a first leveled calculation model in the performance calculation model of multi-leveled hypersonic dynamic propulsion system. It's very simple and efficient, and can be used to confirm some major parameters and flight parameters in the phase of conceptual design of the hypersonic aircraft. So this model has a very important practical value to the primary development of the feasibility scheme of the hypersonic aircraft.