GAP/ADN/nano–Al膏体推进剂的能量特性与激光点火特性  

Energy characteristics and laser ignition characteristics of GAP/ADN/nano-Al pasty propellants

作　　者：裴庆[1] 郝海霞[1] 赵凤起[1] 徐司雨[1] 姚二岗[1] 汪营磊[1] 

机构地区：[1]西安近代化学研究所燃烧与爆炸技术重点实验室,陕西西安710065

出　　处：《化学推进剂与高分子材料》2015年第4期55-59,共5页Chemical Propellants & Polymeric Materials

基　　金：国家自然科学基金(21473130)资助

摘　　要：采用最小自由能原理方法计算了GAP（聚叠氮缩水甘油醚）/ADN（二硝酰胺铵）/nano–Al推进剂的能量特性,制备了一系列ADN质量分数为8%~38%的GAP/ADN/nano–Al膏体推进剂,采用CO2激光点火的方法研究了4种配方在不同激光功率密度作用下的激光点火特性。结果表明：GAP/ADN/nano–Al膏体推进剂的标准理论比冲（Isp）、特征速度（C＊）、燃烧温度（Tc）均随ADN含量增加而依次增大,爆热（Qv）则主要随铝粉含量的增加而增大;GAP/ADN/nano–Al膏体推进剂的点火延迟时间和点火能量总体上随着激光功率密度增加呈现减小的趋势;配方中ADN含量较高时,GAP/ADN/nano–Al膏体推进剂具有较好的激光点火特性。The energy characteristics of GAP（glycidyl azide polymer）/ADN（ammonium dinitramide）/nano-Al propellants were calculated by using the minimum free energy principle method. A series of GAP/ADN/nano-Al pasty propellants with ADN mass fraction of 8%-38% were prepared. The laser ignition characteristics of four formulations under different laser power densities were investigated by using CO2 laser ignition method. The results show that the standard theoretical specific impulse （Isp）, characteristic velocity （C^＊）, combustion temperature （Tc） of GAP/ADN/ nano-A1 pasty propellants all increase with increase of ADN content, the explosion heat （Qv） mainly increases with increase of A1 powder content; the ignition delay time and ignition energy of the GAP/ADN/nano-A1 pasty propellants overall exhibit decreasing tendency with increase of laser power density; the GAP/ADN/nano-AI pasty propellant possesses better laser ignition characteristics when the ADN content in the formulation is relatively high.

关 键 词：膏体推进剂 GAP推进剂 二硝酰胺铵(ADN) 能量特性 点火特性 

分 类 号：V512[航空宇航科学与技术—航空宇航推进理论与工程]