Plasma diagnostic measurement and flowfield analysis in a quasi-steady coaxial magnetoplasmadynamic (MPD) channel realizing a one-dimensional flowfield were conducted for understanding blowing acceleration. Axial variations of current, electron temperature and electron number density in an MPD channel were measured, and these experimental results for Ar roughly agreed with analyzed ones. As a result, it was expected, from the axial profiles of Lorentz forces inferred from the measured current distributions and the calculated plasma velocities, that there existed two acceleration zones near the inlet and outlet at high magnetic Reynolds numbers. Furthermore, it was predicted from numerical analysis that nonequilibrium ionization process enhanced electromagnetic acceleration through the channel.
抄録全体を表示