Operating Characteristics of Aluminum Powder Rotating Detonation Engine

doi:10.12382/bgxb.2022.0002

Abstract

Abstract: The aluminum/air and hydrogen/air rotating detonation engines (RDEs) are experimentally studied and compared to reveal the specific detonation characteristics and propulsion performance of aluminum powder RDE.The RDE engines work at the equivalence ratio of 1 and the air mass flow rate of 260 g/s. It's found that the thrust of aluminum/air RDE is 35% higher than that of hydrogen/air RDE; the pressure peak of aluminum/air is 11% higher than that of hydrogen/air; the detonation velocity of aluminum/air is 11% lower than that of hydrogen/air; and the detonation propagation mode of auminum/air is the same as that of hydrogen/air, which are single wave mode. The above differences are not only caused by the different properties of fuel，but also caused by the difference between the gas-solid two-phase detonation and the gaseous detonation. The experimental results could provide a feasible solution for the air breathing aluminum powder RDE and establish a foundation for the solid powder RDEs.

Key words: powderfuelrotatingdetonationengine, aluminumpowder, firingtest, gas-solidtwo-phasedetonation, powderdetonation, propulsionperformance, detonationcharacteristics

CLC Number:

V231.22

XU Han， LUO Yongchen， NI Xiaodong， XIAO Bowen， ZHANG Feng， SU Xiaojie， ZHENG Quan， WENG Chunsheng. Operating Characteristics of Aluminum Powder Rotating Detonation Engine[J]. Acta Armamentarii, 2022, 43(5): 1046-1053.

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