Development of 300V direct-drive vacuum arc thruster for nano-satellite

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A vacuum arc thruster was developed for 300V direct-drive operation on nano-satellite. The cone-type target was produced for improving thrust measurement in place of the plate-type target. The metal vapor velocity was measured with changing the parameter of applied voltage and amount of capacitance. The average velocity did not change in this measurement. The thrust was proportional to amount of charge stored in capacitance. The engineering model of thruster was produced and drove directly by 300V solar array in vacuum chamber. The circuit of thruster was also developed for nano-satellite.