多孔发射药等离子体增强燃速  

Porous propellant burning rate enhanced by plasma

作　　者：倪琰杰[1] 邢荣军[2] 弯港[1] 金涌[1] 李海元[1] 杨春霞[1] 栗保明[1] 

机构地区：[1]南京理工大学瞬态物理国家重点实验室,江苏南京210094 [2]西安北方惠安化学工业有限公司,陕西西安710302

出　　处：《爆炸与冲击》2016年第4期562-567,共6页Explosion and Shock Waves

摘　　要：利用密闭爆发器实验系统进行了等离子体增强4/7高固体发射药燃速特性的实验研究。采用等离子体发生器的电能利用效率来表征密闭爆发器内输入的等离子体能量,拟合了考虑压力梯度影响和电功率增强的固体发射药瞬态燃速公式。根据实验数据得到4/7高固体发射药的电功率燃速增强因子为0.005 MW^(-1)。与Woodley燃速公式相比,瞬态燃速公式与实验压力曲线符合程度更高,能够更精确地描述固体发射药在等离子体作用下的燃烧过程。The experimental system with a closed bomb was employed to discuss the characteristics of 4 /7high-nitrogen solid propellant burning rate enhanced by plasma. The plasma energy transferred into the closed bomb was measured by the utilization efficiency of the plasma generator electrical energy. A transient burning rate formula of propellant including the influence of pressure gradient and an enhanced gas generation rates coefficient by electrical power was presented. The enhanced gas generation rates coefficient of 4 /7 high-nitrogen solid propellant is equal to 0. 005 MW-1. Compared with the burning rate formula given by Woodley,the pressure curve simulated by the transient burning rate formula is in better agreement with the tests. And the transient burning rate formula can describe the combustion process of solid propellant by plasma more accurately.

关 键 词：爆炸力学 瞬态燃速 密闭爆发器 固体发射药 等离子体 电热化学发射 

分 类 号：O381[理学—流体力学]