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2 Journal of Technical Physics

2 2008

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Performance investigation of SPT-20M low power Hall effect thruster

Loyan A. V., Maksymenko T. A.

Journal of Technical Physics

2008

Vol. 49, no 3-4

283-302

The series of low power Hall effect thrusters (LPHT) SPT-20M was developed and manufactured in STC SPE of the National Aerospace University "KhAI". The main aim was to create a thruster with high performances: high specific impulse and the efficiency up to 40%. During SPT-20M experimental research a number of tests was made. The LPHT magnet system was investigated by taking into account construction thermal conditions. The experimental results show that final model SPT-20M6.1 has good enough performances with respect to the power consumption, which is lower than 100 W.

Investigation of hollow cathode for low power Hall effect thruster

Koshelev N. N., Loyan A. V.

Journal of Technical Physics

2008

Vol. 49, no 3-4

255-266

In this paper we present the results of experimental studies of the gas-discharge hollow cathode (0.2-0.5 A) for low-power Hall thrusters (LPHET). Measurement campaign has been directed to construct a cathode with minimal power and gas consumption. Cathodes, which do not need the starting preheating system and for which the heating by glow discharge in working conditions is used, have the advantage of very simple construction and therefore will be objects of the reported research. It has been shown that the highest cathode performances were achieved: for Xe pressure inside cathode in the range 40 ÷ 60 torr and for emitter current density in the range 15 ÷ 25 A/cm². Direct firing tests of cathode emitters in the laboratory conditions, but close to real in the space, carried over more than 1000 hours are presented. It was found that the cathode power supply level did not exceed 5 W and the xenon mass flow rate supplying cathode was not greater than 0.05 mg/s.