接触热阻对固体火箭发动机烤燃时间的影响

应用有限元法对某模拟固体火箭发动机的热烤试验过程进行了数值模拟研究,对比分析了在相同的外界条件下,考虑接触热阻与不考虑接触热阻时推进剂的起始燃烧时间。结果表明,考虑接触热阻的影响对于准确预测发动机的烤燃时间有重要的影响。

Effect of thermal contact resistance on the cook-off time of solid rocket motor

In this paper, the finite element method is used to simulate the process of cook-off test of the solid rocket motor. Solid rocket motor delay time of ignition is analyzed in the same ambient condition by contrast considering thermal contact resistance with un-considering thermal contact resistance. The result shows that considering the influence of thermal contact resistance is important for well and truly forecasting the delay time of ignition of the solid rocket motor.