Abstract
This paper reports operation characteristics of a steady-state, two-dimensional magnetoplasmadynamics (MPD) thruster using a hollow cathode. In order to improve cathode performance, a tungsten rod was replaced with a hollow cathode which had better electron emission performance and a longer lifetime. A rectangular acceleration section was employed between electrodes. The discharge voltage and thrust were measured with varying an applied magnetic field, discharge current and propellant mass flow rate.
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