【摘要】 为解决ETPE发射药点火延迟时间长及难点火的问题,用高功率脉冲电源通过等离子体发生器产生电弧等离子体点燃ETPE发射药,并研究了ETPE发射药在等离子体作用条件下的点火燃烧特性。结果表明,与常规点火方式相比,等离子体作用使ETPE发射药的燃速显著增强,点火延迟期缩短,点火的一致性改变。分析认为,等离子体高温高速射流的强作用使得RDX颗粒快速越过吸热熔融过程达到分解放热阶段,所以ETPE发射药点火延迟期缩短以及燃烧初期燃速提高。更多还原

【Abstract】 In order to solve the problem of the long delay time of ignition and the difficulty in ignition of ETPE propellant,the ETPE propellant was ignited by the electrical arc plasma which was generated by plasma producer via high power pulse electrical power.The ignition and combustion characteristics of ETPE propellant was studied under the effect of plasma.The results indicated that in comparison with general way of ignition,the plasma effect made the burning rate of the ETPE propellant enhance evidently,and the delay time of ignition shorten,and the consistency of ignition improved,considering that the shortening of the delay time of ignition and enhancing of the initial burning rate are caused by the strong effect of plasma flow with high-temperature and high-speed.This effect causes RDX grain leaping over the process of heat-absorbing and liquating and entering into the process of decomposing and heat-release rapidly.更多还原