| Citation: | MEN Kai, QIU Hua, YAN Yu, et al. Impact of fluidic nozzle on propulsion performance of pulse detonation engine[J]. Journal of Aerospace Power, 2024, 39（2）：20220149 doi: 10.13224/j.cnki.jasp.20220149
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In order to further improve the propulsion performance of the pulse detonation engine(PDE), a multi-cycle numerical simulation was carried out for the PDE with fluidic nozzle, and a scheme of alternating phase injection of the main and secondary flows was proposed. According to the computational results, the new nozzle design can adjust the effective flow area of the main and secondary flows, thereby improving the off-design point state of the nozzle. Furthermore, it can increase the actual filling pressure of combustible gas, thereby enhancing the detonation combustion intensity. Also, the best phase difference between the main and secondary flows manifested the condition that the back compression wave just propagated to the head of detonation chamber. The best injection position of secondary flow was the nozzle throat. As compared with the maximum specific impulse generated by baseline nozzle, the pulse detonation engine with fluidic nozzle could produce a specific impulse gain of 5.64%.
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