用离子探针和压电传感器在高压燃烧器中对5／7、6／7、7／7火药床的对流燃烧过程进行了实验研究。成功地获得了火焰阵面曲线和火焰传播速度以及压力波传播和反射等现象，揭示了粒状火药床对流燃烧过程的燃烧机理，并研究了点火强度、装填密度、火药尺寸等因素对燃烧过程的影响。实验结果对火箭推进系统和火炮膛内产生灾难性异常压力机理研究有实际意义。 Convective combustion of 5 / 7,6 / 7,7 / 7 gunpowder beds in high pressure burners was investigated by using ion probes and piezoelectric sensors. Successfully obtained the flame front curve and flame propagation velocity and the pressure wave propagation and reflection phenomena, reveals the combustion mechanism of granular gunpowder convective combustion process, and studied the ignition intensity, packing density, gunpowder size and other factors on the combustion process influences. The experimental results have practical significance for the study of catastrophic abnormal pressure mechanism in rocket propulsion system and gun chamber.