The deign and study of 2D solid-ramjet inlet working over a wide range of flight mach number

In this paper the design of two-dimension solid-ramjet inlet operating over a wide range of flight Mach number is investigated. A step-by-step optimum design method from one-dimension to three-dimension is established. In the method an one-dimension computer model is established with several proper assumptions, and an one-dimension optimum result is obtained by adopting genetic algorithms and selecting total pressure recovery coefficient as performance objective function. Then, during the two-dimension and three-dimension designs, the key influencing factors are selected and analysised carefully, so as to improve the one-dimension optimum result. So a complete and efficient two-dimension ramjet inlet optimum design method is illustrated. The design process not only verifies the rationality of the one-dimension computer model and the selection of key influencing factors, but also gives many variation laws with these key influencing factors.