含AP包覆硼的富燃推进剂燃烧机理研究

通过微热电偶测温和火焰单幅照相技术测试了含硼富燃料推进剂燃烧波温度分布及燃烧火焰结构；用扫描电镜对熄火表面形貌进行了观察，并通过能谱仪进行局部元素分析；对DSC曲线进行积分，得到推进剂的凝相放热量；测量推进剂燃烧的爆热和低压燃速，获得了其低压燃烧特性和一次燃烧放热情况。结果表明，含AP包覆硼的推进剂燃烧更剧烈，推进剂的绝热火焰温度更高，AP包覆硼提高了含硼富燃料推进剂的凝相放热、爆热和低压燃速。初步确定了该类推进剂的燃烧过程，为建立含硼富燃料推进剂燃烧物理模型提供了依据。

Study on Combustion Mechanism of Fuel-rich Propellant Holding Boron Coated with AP

The combustion wave temperature profiles and flame structures of fuel-rich propellant containing boron are measured by using W-Re micro-thermal couple and flame photo technique. The surface appearance and element distribution of extinguished samples are analyzed by JMS-5800SEM. The heat which releases in condensed-phase is obtained by integrating the DSC curve. The difference of the combustion characteristic between two propellants whose contain boron coated with and without AP is compared by measuring the heat of explosive and burning rate of the propellants. The results show that when the formulations are invariable, which coatins boron coated with AP, the adiabatic flame temperature of explosion and the burning rate in lower pressure are increased. Meanwhile, the combustion course of the propellant was confirmed preliminary.