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含能材料  2015 

HMX单元推进剂激光点火特征参数计算方法

DOI: 10.11943/j.issn.1006-9941.2015.04.005

Keywords: 固体推进剂 HMX单元推进剂 激光点火 点火特征参数

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Abstract:

为了简化激光作用下固体推进剂点火特性参数的计算,分析了以激光为点火源的固相反应模型点火机理,将其分为吸热热解、边界层气相掺混与快速化学反应三个阶段。建立了一种预测阶段性激光点火延迟时间和点火温度的特征参数近似计算模型,利用该方法对HMX单元推进剂在三种不同的激光入射强度(45,76,170 W·cm-2)下的点火过程进行了计算,该模型计算的点火延迟时间与点火温度与固相点火模型相比之间的偏差分别为3.8%,8.1%,11.5%与1.23%,0.87%,0.98%

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