固体发射药等离子体点火过程及弹道效应分析

总结了常规火炮点火的现状，分析了固体药电热化学炮（ＳＰＥＴＣ）点火的潜在优势，并对等离子体点火过程中存在的燃速增强机理进行了讨论。作为等离子体点火的弹道效应分析，利用电热增强固体药内弹道、等离子体发生器、脉冲功率源三者的耦合编码，计算了不同点火功率、不同毛细管径对ＳＰＥＴＣ炮弹道性能的影响。

Analysis of the process of plasma ignition in solid propellant electrothermal-chemical propulsion

In the solid propellant electrothermal chemical (SPETC) propulsion concept,it has been proved that plasma can be successfully used to optimize and control the propellant ignition process.According to the recent work in this area,the mechanism of the burning rate enhancement in plasma ignition process is analyzed,and the electron jump or photodissociation process of the propellant molecular caused by the plasma radiation is considered as a possible reason of burning rate increasing.For the purpose of studying the effect of the geometric and energetic characteristics of a plasma primer on the igntion and combustion of the solid propellant charge,an one dimensional two phase IB (Inner Balistics) model is modified to simulation the IB process of SPETC,and some conclusions about chamber pressure and electrical efficiency varying with electrical power and capillary radius are given.