The resistance characteristics were investigated for various inlet types in opening or closing mode to simulate the periodic working of Pulse Detonation Engine (PDE).The result shows that PDE resistance is in proportion to the square of flying velocity.For the inlet opening mode

the influences of different inlet types on the flow rate of detonation tube were studied.Consequently

during selecting and designing the inlet

effects of PDE inlet type on both resistance of PDE and flow rate in detonation tube can be considered.PDE resistance was also investigated when aerovalve and spoiler were installed.It is helpful to recognize how different part of PDE effects on and contributes to resistance.These results are also important to aerovalve and spoiler design.