首页|Power transfer efficiency in an air-breathing radio frequency ion thruster

Power transfer efficiency in an air-breathing radio frequency ion thruster

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Due to a series of challenges such as low-orbit maintenance of satellites,the air-breathing electric propulsion has got widespread attention.Commonly,the radio frequency ion thruster is favored by low-orbit missions due to its high specific impulse and efficiency.In this paper,the power transfer efficiency of the radio frequency ion thruster with different gas compositions is studied experimentally,which is obtained by measuring the radio frequency power and current of the antenna coil with and without discharge operation.The results show that increasing the turns of antenna coils can effectively improve the radio frequency power transfer efficiency,which is due to the improvement of Q factor.In pure N2 discharge,with the increase of radio frequency power,the radio frequency power transfer efficiency first rises rapidly and then exhibits a less steep increasing trend.The radio frequency power transfer efficiency increases with the increase of gas pressure at relatively high power,while declines rapidly at relatively low power.In N2/O2 discharge,increasing the N2 content at high power can improve the radio frequency power transfer efficiency,but the opposite was observed at low power.In order to give a better understanding of these trends,an analytic solution in limit cases is utilized,and a Langmuir probe was employed to measure the electron density.It is found that the evolution of radio frequency power transfer efficiency can be well explained by the variation of plasma resistance,which is related to the electron density and the effective electron collision frequency.

radio frequency ion thrusterinductively coupled plasmapower transfer efficiencyanalytic solu-tion

黄高煌、李宏、高飞、王友年

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Key Laboratory of Materials Modification by Laser,Ion,and Electron Beams(Ministry of Education),School of Physics,Dalian University of Technology,Dalian 116024,China

College of Physical Science and Technology,Dalian University,Dalian 116622,China

National Natural Science Foundation of ChinaNational Natural Science Foundation of ChinaNatural Science Fund from the Interdisciplinary Project of Dalian University

1200503112275041DLUXK-2023-QN-001

2024

10.1088/1674-1056/ad426c

中国物理B(英文版)
中国物理学会和中国科学院物理研究所

中国物理B(英文版)

CSTPCDEI
影响因子：0.995
ISSN：1674-1056
年,卷(期)：2024.33(7)
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