弹道学报2017，Vol.29Issue(3)：74-81,8.
旋转爆震发动机工作特性试验研究
Experimental Study on Operating Characteristics of Rotating Detonation Engine
摘要
Abstract
Experiments on rotating detonation engine( RDE) with the propellant of H2/air were conducted to investigate the operating characteristics of engine. Ion probes and high-frequency pressure transducer were installed simultaneously to measure flame signal and pressure signal respectively. By changing air mass-flow-rate,the flame and pressure wave signals of the ignition process, stable stage and shut down process were analyzed under the high and low mass-flow-rate. The dominant frequency of flame is the same as that of pressure wave, and they are coupling during propagation, and the propagation velocity reaches 1660 m/s. When mass flow rate is low(75. 37 g/s),the flame signal peaks at the point near the inlet of combustion chamber, are larger than that at the further point. When mass flow rate is high (102. 125 g/s),the flame signal peaks at the further point are larger than that at the closer point. The fresh gas injection has more time-wise effect on the closer point than the further one. The relative standard deviation of instantaneous frequency of pressure signal is smaller than that of the flame signals. Furthermore,the ignition time under the conditions of lower mass flow rate is shorter than that under the conditions of the higher mass flow rate. When the supply of H2 is cut off,the flame disappears earlier than pressure wave.关键词
旋转爆震发动机/离子信号/传播速度/起爆过程/熄爆过程Key words
rotating detonation engine/ion signal/propagation velocity/ignition process/shut down process分类
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徐灿,马虎,严宇,邓利,余陵..旋转爆震发动机工作特性试验研究[J].弹道学报,2017,29(3):74-81,8.基金项目
国家自然科学基金项目(51606100) （51606100）
江苏省自然科学基金项目(BK20150782) （BK20150782）
中央高校基本科研业务费专项资金资助项目(30915118836) （30915118836）
