G1900-1-4 電磁プラズマ推進の作動特性(宇宙工学部門一般講演,社会変革を技術で廻す機械工学)

抄録

This paper reports the thrust performance of a steady-state, applied-field MPD arcjet thruster. At low mass flow rates, electromagnetic acceleration characteristics were investigated with varying propellant species, discharge current and magnetic field. When mass flow rate is 4.2mg/s, voltage drop was measured by 0.2V in a single operation. Voltage drops were also measured through several operations. These are thought to be causally cathode changes. The ends of cathodes after operations expanded and became bumpy. In a single operation, both high voltage mode and low voltage mode were measured when mass flow rate, discharge current, magnetic field were constant. These modes relativity remain to be explained.