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描述了消融毛细管中高压电弧放电下的等离子体形成、喷射和火炮内弹道过程；建立了脉冲功率源放电模型、消融毛细管放电模型、内弹道集总模型的耦合模型，并进行了数值求解．通过对膛内压力曲线形成特点的分析，提出了单脉冲点火、多脉冲增强燃烧的双喷管模型和常规固体药点火、多脉冲增强燃烧的单喷管模型．此外，将计算编码的各个模块的计算结果与试验结果及国外计算结果进行比较，它们一致性较好，说明了模型和计算编码的可靠性．在此基础上，通过改变一些参数对模型的敏感性进行了分析．本文对于电热发射技术中的毛细管设计和ＰＦＮ网络的电参数选择以及内弹道装药设计均具有一定的指导意义．
The plasma formation, jetting and internal ballistic trajectory of the ablation capillaries under medium and high voltage arc discharge are described. The pulse power source discharge model, ablation capillary discharge model and the coupling model of the internal ballistic lumped model are established and numerically solved. Based on the analysis of formation characteristics of pressure curve in bore, single nozzle model with single pulse ignition and multi-pulse enhanced combustion and single nozzle with conventional solid drug ignition and multi-pulse enhanced combustion are proposed. In addition, comparing the calculation results of each module of calculation and coding with the test results and the foreign calculation results, their consistency is good, which shows the reliability of the model and calculation coding. On this basis, the sensitivity of the model is analyzed by changing some parameters. This article is of some guiding significance for the capillary design of the electrothermal emission technology, the selection of the electrical parameters of the PFN network and the design of the interior ballistic charge.