Problems analysis of using of four electrodes ion-optic systems in electric propulsion thrusters

Aerospace propulsion engineering


Kazakov E. N.1*, Smirnova M. E.2**, Khartov S. A.***

1. Progresstech, Electrozavodskaya street, 14, (1), Moscow , 107023, Russia
2. Moscow Aviation Institute (National Research University), 4, Volokolamskoe shosse, Moscow, А-80, GSP-3, 125993, Russia



Future trends for space scientific-research activities make demands to the spacecraft and propulsion systems for them. Worldwide space programs and near-earth objects infrastructure evolution analysis enable the effective usage of electric propulsion for many of the delivered tasks. This paper focuses on analysis of one of the best possibility to increase engines performances and lifetime without bringing too many changes in the thruster design.
One of the main aims of this work was to find out if four electrode ion-optic systems could bring appreciable result to increasing lifetime, thrust and specific impulse of ion thrusters in comparison with its conventional three electrode systems. For that the analysis of state-of-the-art of ion thrusters was performed and all available results of integral performances were included into the summary table. As a result the current ranges for main thruster parameters were defined.
In the paper it is also presented some estimations of efficiency and expediency of usage of four electrodes ion-optic systems for one of most prospective technology for future applications – ion thrusters. Benefits arising from this issue delivered as a conclusion.


electric propulsion, ion-optical system, ion beam extraction, beam focusing


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