关键词: 电推进, 射频离子推力器, 离子 离子推力器, 自中和射频离子推力器, 工质

Abstract: Radio frequency(RF) ion thrusters occupy an important position in the field of electric propulsion due to the advantages of high specific impulse, long life, high efficiency, and high reliability. In order to further reduce the mass and volume of the propulsion system and reduce the cost, new RF ion thrusters are developed, like the freeneutralizer RF ion thrusters. In this paper, the research and development status of traditional RF ion thrusters are summarized, the key technologies in RF ion propulsion technology are analyzed. The principle and research progress of freeneutralizer RF ion thrusters are summarized, and the development direction of RF ion thruster is given.

Key words: electric propulsion, RF ion thrusters, ion ion thruster, selfneutralizing RF ion thruster, propellant