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本文对目前描述脉冲等离子体推力器放电过程的两个理论模型进行了简要的分析讨论,在此基础上,考虑到放电通道实际的几何尺寸及通道中等离子体的行为,提出了新的假设——扩散模型。以两个不同放电通道几何尺寸的推力器为例,分别按这三种模型进行了计算,并进行了实验。对此可以看出,用新的理论模型描述推力器的物理过程更为合适。在对推力器进行初始设计和性能分析时,可以利用本文给出的方法。
In this paper, two theoretical models for describing the discharge process of pulsed plasma thruster are briefly discussed and discussed. Based on this, taking into account the actual geometry of the discharge channel and the behavior of the plasma in the channel, a new hypothesis is proposed - - Diffusion model. Taking two thrusters with different discharge channel geometries as examples, the three models were respectively calculated and experiments were carried out. From this we can see that it is more appropriate to describe the physical process of the thruster with a new theoretical model. In the initial design and performance analysis of the thruster, we can use the method presented in this article.