论文部分内容阅读
微波等离子推力器 (MPT)的最大优点是微波在谐振腔内放电使工质形成悬浮的等离子体 ,没有电极的烧蚀与寿命问题。文中计算了MPT谐振腔内氦气工质击穿场强与腔内气压的关系 ,结合实验现象及参数调节分析了微波等离子推力器等离子体形成的基本物理过程及影响等离子体稳定的因素、等离子体与微波耦合的机理等 ,为建立微波、等离子体、流场间的耦合计算模型奠定了基础。
The biggest advantage of the microwave plasma thruster (MPT) is that the microwave discharges in the cavity to make the working substance form a suspended plasma, and there is no problem of ablation and life of the electrode. In this paper, the relationship between the breakdown field strength of helium gas in the MPT resonator and the pressure in the cavity is calculated. The basic physical process of the formation of plasma in the plasma thruster and the factors that affect the stability of the plasma are analyzed in combination with the experimental phenomena and parameter adjustment. The mechanism of the coupling between the body and the microwave has laid a foundation for establishing the coupling calculation model between the microwave, the plasma and the flow field.