Wind tunnel experiments and numerical calculations were conducted to investigate the influence of several key factors on self-starting capability. The changes of maximum ICR with cowl shock strength, boundary layer thickness and wall temperature were explored and the sudden change of inlet self-starting capability was observed during a certain range of these influencing factors. A transitional phenomenon was obtained in both experiments and numerical simulations. It is found that the sudden changes of inlet self-starting capability with boundary layer thickness and wall temperature take place with a wide domain of transitional phenomenon.
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