关键词: 脉冲爆震发动机;点火能量;点火-起爆时间;平均推力

Abstract: The ignition energy and operation frequency effects on the ignition-detonation performance and propulsion performance of gasoline-air two-phase valveless pulse detonation engine(PDE) were presented.In order to observe the effects of ignition energy and operation frequency on ignition-detonation time and PDE performance,the proof-of-principle experiments of PDE were carried out.The results indicates that the ignition energy and operation frequency have important effects on ignition-detonation time.As the ignition energy increases,the ignition-detonation time decreases and the average thrust of PDE increases.As the operation frequency increases,the ignition-detonation time decreases and the ignition energy effect on ignition-detonation time degenerates.The optimum fuel/air equivalence ratio decreases and the average thrust of air-breathing PDE increases nearly linearly with the operation frequency increasing.

Key words: Pulse detonation engine;Ignition energy;Ignition-detonation time;Average thrust