2 次元軸対称流モデルを用いたMPDスラスタの放電室形状最適化

摘要

A Magnet-Plasma-Dynamic Thruster (MPDT) is expected as a thruster that can be applied to the manned mission. But it has no prospect of actually using MPDT has yet emerged, because of its low propulsion efficiency. Then we studied the improvement of its efficiency by optimizing the nozzle geometry. Until now, we have acquired the optimum geometry using axial flow model. In this study, we consider about the influences of the viscosity which have been ignored. The result showed that ①The optimized geometry had a long channel to recover enthalpy;②The straight part and the anode radius are short to acceleration;③The cathode length is lengthened because the back electromotive force is suppressed.