关键词: 固体推进剂;推进剂燃烧;侵蚀燃烧裂纹;火焰传播

Abstract: The characteristics of 1 D flow fields were simulated on the boundary of combustion fracture in solid propellants on the condition of pressurization in chamber The high temperature combustion gas was drived into crack by the pressurization,so that there were spreading processes of pressure wave and combustion flame When the pressure wave front got to the close tip of the crack,there must be a shock which would make the pressure increasing rapidly at the tip port Therefor,in the direction of pressurization rate inceasing,there must be the phenomena of flame spreading deceleration、abrupt pressurization、prior ignition and flame spreading acceleration one after another at the crack tip So the internal relations are established among the phenomena which were described in literatures,and four kinds of combustion flame spreading curves are described in this paper

Key words: Solid propellant;Propellant combustion;Erosive burning crack;Flame propagation