对分别含有Pb盐、Pb/C双元催化剂及Pb/Cu/C三元催化剂的三种RDX CMDB推进剂熄火表面形貌特征和燃烧火焰结构进行了研究。结果发现 ,不同的催化剂可导致推进剂熄火表面的特征物类型和几何尺寸不同 ,燃烧表面上明亮物质的几何形状、亮度不同。压力增大 ,推进剂燃烧火焰变得更加明亮。 Three RDX CMDB propellants, which contain Pb salts, Pb / C binary catalysts and Pb / Cu / C ternary catalysts, respectively, were investigated for their flameout surface morphology and combustion flame structure. As a result, it was found that different catalysts can lead to different types and geometrical dimensions of the features on the flameout surface of the propellant, and different brightnesses and geometries of the bright matter on the combustion surface. As the pressure increases, the propellant flame burns brighter.