パルス型テフロン・プラズマ・スラスタの性能向上に関する研究

(その2) ロゴスキー・コイルおよび探針による内部診断

抄録

Experimental studies on the physical process inside of Teflon PPT were carried out. The current distribution measurement using Rogowski coils indicated the propagation of discharge region. It was showed that elongation of the electrodes and the applied accelerating magnetic field are effective in removing discharge current from Teflon sublimation surface to reduce the amount of Teflon comsumption. The improvement in specific impulse and in thrust efficiency, which is reported in Part I, is explained by this effect. The exhaust plasma properties were measured using double probes. The measurement showed that plasma generation is deeply affected by the discharge current.