INFLUENCE OF MAGNETIC FIELD TOPOGRAPHY AND DISCHARGE CHANNEL STRUCTURE ON PERORMANCE OF AN ANODE-LAYER HALL THRUSTER

摘要

The experimental studies have been implemented to examine the effect of the magnetic field topography and the discharge channel structure on the performance of 1-kW class anode-layer Hall thruster TALT-2. The thruster has been operated using a divergent-type hollow anode and a cylindrical discharge channel under various magnetic field topographies. The dependence of channel length was examined to find out the optimum anode front position. The confirmations about whether the performance enhancement was realized by using a divergent-type hollow anode and a cylindrical discharge channel were carried out under the optimum channel length and various magnetic field topographies. The results showed that some increment in thrust and thrust efficiency was obtained by using a divergent-type hollow anode. The thrust efficiency was enhanced to 57 % with the divergent-type hollow anode at a discharge voltage of 400 V and a xenon mass flow rate of 3.0 mg/s.