{"title":"Hall-effect thruster system of fully water propellant with microwave discharge cathode","authors":"Akira Iwakawa, Sei Mizojiri","doi":"10.1016/j.actaastro.2025.03.023","DOIUrl":null,"url":null,"abstract":"<div><div>To realize a fully water-vapour propellant Hall-effect thruster, hundreds of watt-class Hall effect thrusters have been tested with different propellants, including xenon and water-vapour, cathode, hollow cathode, and microwave discharge cathode. The current characteristics and ion beam currents were measured and compared for different combinations. From the test results, it was observed that the difference in the current extraction type and propellant of the cathode did not have a significant impact on the anode performance; however, the anode operation range was limited by the extraction capability. Finally, a fully water-vapour Hall-effect thruster system based on the microwave discharge cathode operating was demonstrated.</div></div>","PeriodicalId":44971,"journal":{"name":"Acta Astronautica","volume":"232 ","pages":"Pages 307-315"},"PeriodicalIF":3.4000,"publicationDate":"2025-03-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Acta Astronautica","FirstCategoryId":"5","ListUrlMain":"https://www.sciencedirect.com/science/article/pii/S0094576525001791","RegionNum":2,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q1","JCRName":"ENGINEERING, AEROSPACE","Score":null,"Total":0}
引用次数: 0
Abstract
To realize a fully water-vapour propellant Hall-effect thruster, hundreds of watt-class Hall effect thrusters have been tested with different propellants, including xenon and water-vapour, cathode, hollow cathode, and microwave discharge cathode. The current characteristics and ion beam currents were measured and compared for different combinations. From the test results, it was observed that the difference in the current extraction type and propellant of the cathode did not have a significant impact on the anode performance; however, the anode operation range was limited by the extraction capability. Finally, a fully water-vapour Hall-effect thruster system based on the microwave discharge cathode operating was demonstrated.
期刊介绍：
Acta Astronautica is sponsored by the International Academy of Astronautics. Content is based on original contributions in all fields of basic, engineering, life and social space sciences and of space technology related to:
The peaceful scientific exploration of space,
Its exploitation for human welfare and progress,
Conception, design, development and operation of space-borne and Earth-based systems,
In addition to regular issues, the journal publishes selected proceedings of the annual International Astronautical Congress (IAC), transactions of the IAA and special issues on topics of current interest, such as microgravity, space station technology, geostationary orbits, and space economics. Other subject areas include satellite technology, space transportation and communications, space energy, power and propulsion, astrodynamics, extraterrestrial intelligence and Earth observations.
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