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弹道学报  2013 

铝镁贫氧推进剂激光点火特性

Keywords: 铝镁贫氧推进剂,点火延迟,激光点火,热流密度

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Abstract:

为研究铝镁贫氧推进剂的点火特性,采用激光点火系统对推进剂在不同激光热流密度下进行了多组点火实验,结果表明:铝镁贫氧推进剂点火机理为凝聚相点火,激光热流密度在点火过程中起主导作用;在激光热流密度为176~646W/cm2的范围内,铝镁贫氧推进剂的点火延迟时间随着热流密度的增加而递减,且点火延迟时间变化趋缓。依据实验结果拟合出了不同热流密度下计算铝镁贫氧推进剂点火延迟时间的经验公式,该公式可计算激光热流密度在176~646W/cm2范围内铝镁贫氧推进剂的点火延迟时间。

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