Experimental Study on Propagation Characteristics of Kerosene/Air RDE with Different Diameters

Shida Xu, Feilong Song, Jianping Zhou, Xingkui Yang and Peng Cheng
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Shida Xu: Science and Technology on Plasma Dynamics Laboratory, Air Force Engineering University, Xi’an 710038, China
Feilong Song: Science and Technology on Plasma Dynamics Laboratory, Air Force Engineering University, Xi’an 710038, China
Jianping Zhou: Science and Technology on Plasma Dynamics Laboratory, Air Force Engineering University, Xi’an 710038, China
Xingkui Yang: Science and Technology on Plasma Dynamics Laboratory, Air Force Engineering University, Xi’an 710038, China
Peng Cheng: Science and Technology on Plasma Dynamics Laboratory, Air Force Engineering University, Xi’an 710038, China

Energies, 2022, vol. 15, issue 12, 1-13

Abstract: A series of experimental tests were carried out in order to study the propagation characteristics of a liquid kerosene rotating detonation engine (RDE) with different diameters. Distinguished characteristics of spatial and temporal instability were found in the large-scale RDE due to the uneven circumferential distribution of kerosene supply pressure. As for the two counter-waves detonation system, the 500 mm-diameter RDE maintains a higher detonation wave velocity due to its longer injection recovery time. However, the 220 mm-diameter RDE can obtain a larger equivalence ratio operation range, higher specific thrust, and higher specific impulse. In addition, compared with the deflagration combustion, the detonation combustion has higher chamber pressure and thrust under the same operational conditions.

Keywords: rotating detonation wave; liquid kerosene; detonation mode; size effect (search for similar items in EconPapers)
JEL-codes: Q Q0 Q4 Q40 Q41 Q42 Q43 Q47 Q48 Q49 (search for similar items in EconPapers)
Date: 2022
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