Application of an additional electrode for improving the emission properties of the lossless cathode-neutralizer for EPSPS
Authors: Benklyan A.S., Lyapin A.A., Klimenko G.K.
Published in issue: #7(103)/2020
DOI: 10.18698/2308-6033-2020-7-1997
Category: Aviation and Rocket-Space Engineering | Chapter: Thermal, Electric Jet Engines, and Power Plants of Aircrafts
The article considers the advantages of application of an additional electrode — anode-collector in the design of a lossless cathode-neutralizer (LCN) for electrically powered spacecraft propulsion systems (EPSPS) (hall-effect thrusters and ion thrusters). The relevance of the work is due to the increased interest in the possibility of using lossless thermionic cathodes as cathodes-neutralizers (CN) of EPSPS. Based on the results of laboratory tests of the lossless cathode-neutralizer model conclusions are drawn about the effectiveness of the anode-collector in the design of the lossless cathode-neutralizer. The presence of the collector-anode allows for additional “stimulation” of the emitter by voltage intensifying the emitter activation process and increasing the emission current from the emitter surface by 2-2.3 times. The saved energy for emitter heating due to using an anode-collector is estimated. The basic concepts and recommendations for the development of the design of lossless cathode-neutralizer design are presented.
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