XM-731 PLASMA ENGINE. Final Report

An experimental and theoretical program was conducted to investigate the performance of a crossed-field MHD accelerator under continuous flow operation for space propulsion purposes. Configuration studied is a divergent duct in which is applied a constant electric field across parallel electrodes and a magnetic field from an external magnet with tapered polepieces. The experimental work involved construction and test of several models, and design and operational information are described. Theoretical programs produced information on electrical conductivity of seeded gases, analysis of end and Hall effects in such a duct, and calculations of performance of typical engines in terms of specific impulse, and power and thrust levels. (auth)