利用脉冲功率技术提高霍尔推进器的比冲

IF 3.1 2区物理与天体物理 Q1 ENGINEERING, AEROSPACE

Acta Astronautica Pub Date : 2025-02-25 DOI:10.1016/j.actaastro.2025.02.043

Haochen Ma , Tiance Liang , He Zheng , Jiapeng Li , Liqiu Wei , Liang Han , Hong Li , Yongjie Ding

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Improving specific impulse of Hall thruster by pulse power technology

It is necessary to increase the voltage and reduce the anode volume flow rate to improve the specific Hall thruster impulse under power constraints. This leads to a low density of neutral gas flow in the channel and results in insufficient ionization. This study proposes pulse power technology to improve the specific Hall thruster impulse. The influence of pulsed discharge on the discharge and plasma plume characteristics of a Hall thruster was investigated. The experimental results show that the high voltage provided by the pulsed mode was beneficial to the acceleration of ions at constant power and anode flow. As a result, the specific impulse, efficiency, and thrust of Hall thruster improved. The specific impulse of the Hall thruster at constant power is 1770 s in the pulsed mode and 1570 s in the direct current (DC) mode. This represents an increase of about 12.7 %, which significantly raises the upper limit of the Hall thruster's specific impulse. The results of this study are significant for the design of high-specific-impulse Hall thrusters.

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来源期刊

Acta Astronautica 工程技术-工程：宇航

CiteScore

7.20

自引率

22.90%

发文量

599

审稿时长

53 days

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.