含CL-20的NEPE固体推进剂的性能

Properties of NEPE Solid Propellant Containing Hexanitrohexaazaisowurtzitane

用高能氧化剂六硝基六氮杂异伍兹烷（CL-20）部分代替NEPE推进剂基础配方中的RDX，研究了CL-20含量、粒度大小对NEPE推进剂能量性能、燃烧性能、力学性能的影响规律。结果表明，在低铝含量NEPE推进剂中加入CL-20后，比冲可提高约54N·s／kg；加入CL-20后，NEPE推进剂在各压力点下的燃速明显比含RDX的NEPE推进剂燃速高，但压力指数差别不大；随着CL-20粒度的增加，燃速呈现先增后降的趋势，在105～125μm时达到最大值，燃速压力指数则表现为先降后增的趋势，105～125μm时最低，最低值为0．423；随CL-20粒径的变化，NEPE推进剂的力学性能有大幅度的变化，粒径为125～154μm时，其综合力学性能最佳。

The effect of content and particle size of CL-20 on energy, combustion and mechanical properties of NEPE propellant are investigated by the substitution of CL-20 for RDX partially in NEPE propellant. According to the theoretical calculation, the accession of CL-20 makes the specific impulse of the propellant composition with low A1 content increase 54N · s/kg. The burning rate of propellant containing CL-20 was higher than the propellant containing RDX, while their pressure exponents were almost the same. With the increase of particle size of CL-20, the burning rate of the propellant varied in a tendency of increase first and then decrease and reached the maximum value at 105～125 μm of particle size of CL-20, while pressure exponent varied in a tendency of decrease first and then increase and reached the minimum value of 0. 423 at the same particle size. The mechanical properties of the propellant also varied with the particle size of CL-20 and their optimum value was obtain at 125～154 μm of particle size of CL-20.