摘要
为探索凝胶燃料在脉冲爆轰发动机中应用的可行性,设计了凝胶汽油脉冲爆轰火箭发动机实验系统。对不同氧含量和凝胶汽油供给工况下的多循环脉冲爆轰发动机进行了热态实验,分析了氧含量和燃料供给工况对爆轰段爆轰压力和波传播速度的影响。实验结果表明,使用凝胶汽油的脉冲爆轰火箭发动机能稳定工作;在氧气质量百分比为42%、凝胶汽油/雾化空气喷射压力系数为2.5/1工况下,距离发动机点火位置770 mm处的爆轰压力均值为2.02 MPa,爆轰波速度均值为1 124 m/s。在相同凝胶汽油供给条件下,增加氧含量能够获得更大的爆轰压力和爆轰波速度。研究结果对凝胶燃料和脉冲爆轰发动机应用研究具有参考意义。
An experimental system of pulse detonation rocket engine using gelled fuels was established to explore the feasibility of application of gelled fuels on pulse detonation engines.The hot state tests were accomplished on multi-cycle pulse detonation rocket engine at different oxygen concentration and supply conditions of gelled fuels.The influences of oxygen concentration and fuel supply conditions on pressure and wave propagation velocity of detonation wave were analyzed. The experimental results indicate that pulse detonation rocket engine can work stably with gelled fuels.With 42% oxygen in filling gases and injection pressure coefficients of fuel and atomizing air at 2.5 and 1,the average value of detonation pressure and wave velocity were 2.02 MPa and 1 124 m/s respectively.The pressure and wave velocity of detonation increase with oxygen addition under the same fuel supply conditions.The results have some significant references for application investigation on gelled fuels and pulse detonation engines.
出处
《固体火箭技术》
EI
CAS
CSCD
北大核心
2014年第4期505-509,共5页
Journal of Solid Rocket Technology
基金
国家自然科学基金(11372741)
中央高校基本科研业务费专项资金(30920130112007)
关键词
脉冲爆轰发动机
凝胶汽油
爆轰
热态实验
pulse detonation engine
gelled gasoline
detonation
hot state test
