采用激波风洞 激波管组合设备对预混的碳氢燃料———空气混合物的点火与超声速燃烧进行了研究。为缩短碳氢燃料 -空气混合物的点火延迟时间 ,通过激波风洞喷管入口与接触面之间的激波反射对经过雾化与气化的碳氢燃料 (汽油 )进行预热 ;此外 ,由燃烧驱动激波管产生的高温燃气作为引导火焰点燃激波风洞产生的预混与预热的超声速碳氢燃料———空气混合物。采用纹影系统对超声速可燃气流中的火焰传播进行流场显示。实验结果表明 ,上述方法可将碳氢燃料———空气混合物的点火延迟时间缩短至小于 0 .2ms,同时还得出了火焰相对于超声速可燃气流的传播速度 The shock wave and supersonic combustion of pre-mixed hydrocarbon fuel-air mixture was studied by using shock wave wind tunnel shock tube assembly equipment. In order to shorten the ignition delay time of the hydrocarbon fuel-air mixture, the nebulized and gasified hydrocarbon fuel (gasoline) is preheated by the shock reflection between the entrance of the shock tunnel and the contact surface. In addition, The high temperature gas produced by the combustion-driven shock tube serves as a premixed and preheated supersonic hydrocarbon fuel mixture that directs the flame to ignite the shock wind tunnel. The flow pattern of flames in the supersonic combustible gas flow is displayed by using the profiling system. The experimental results show that the above method can shorten the ignition delay time of the hydrocarbon fuel-air mixture to less than 0.2ms, and also obtain the propagation speed of the flame relative to the supersonic combustible gas flow