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根据某点火器螺套在某固体火箭发动机地面热试车中被烧蚀的情况,建立了该点火器热设计模型,核算了该固体火箭发动机中安装点火器部位的换热系数,以此为条件,计算了该点火器本体材料由钛合金改为铝合金和螺套材料由钛合金改为钢45的热防护要求,结果达到了应用热设计理论优化产品设计的目的,改进设计的点火器成功通过固体火箭发动机试验。
According to the ablation of a certain lighter torus on the ground test run of a solid rocket motor, a heat design model of the igniter is established, and the heat transfer coefficient of the igniter part in the solid rocket motor is calculated. , Calculate the lighter body material from titanium alloy to aluminum alloy and screw sleeve material from titanium to steel 45 thermal protection requirements, the results reached the application of thermal design theory to optimize product design, improve the design of the successful igniter Pass solid rocket engine test.