以防空导弹大长径比双推力固体火箭发动机装药为研究对象,分析了导弹旋转发射出筒过程中承受的各类载荷。通过计算装药的应力—应变场,发现了装药的危险部位,进而分析了燃烧室发生高压爆炸原因。 Taking the anti-aircraft missile with large aspect ratio and double-thrust solid rocket motor charge as the research object, the types of loads that the missile launches out of the barrel are analyzed. By calculating the stress-strain field of the charge, the dangerous parts of the charge were found, and then the reason of the high-pressure explosion in the combustion chamber was analyzed.