Study on the Discharge Characteristics of a Coaxial Pulsed Plasma Thruster

LIU Wenzheng(刘文正); WANG Hao(王浩); ZHANG Dejin(张德金); ZHANG Jian(张坚)

doi:10.1088/1009-0630/16/4/08

Plasma Science and Technology > 2014 > 16(4): 344-351. > DOI: 10.1088/1009-0630/16/4/08

LIU Wenzheng(刘文正), WANG Hao(王浩), ZHANG Dejin(张德金), ZHANG Jian(张坚). Study on the Discharge Characteristics of a Coaxial Pulsed Plasma Thruster[J]. Plasma Science and Technology, 2014, 16(4): 344-351. DOI: 10.1088/1009-0630/16/4/08

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Study on the Discharge Characteristics of a Coaxial Pulsed Plasma Thruster

School of Electrical Engineering, Beijing Jiaotong University, Beijing 100044, China

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Received Date: January 27, 2013

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Abstract

Abstract

A new coaxial pulsed plasma thruster (PPT) laboratory model is designed and employed in this study. A Teflon sleeve is connected with the anode, which is shaped as a nozzle, and a cathode is mounted in the cavity of the Teflon sleeve and kept in close contact with it. A thread is then designed in the internal surface of the Teflon sleeve, and because of the strong field strength of the cathode triple junction (CTJ), vacuum flashover occurs and a plasma jet is acquired behind the anode. The electric field distribution of the designed coaxial PPT laboratory model is simulated by MAXWELL 3D simulation software, and the plasma density and thrust are measured by a Langmuir probe and a piezoelectric thin-film sensor, respectively. Through a series of comparative experiments, we discuss the impact of optimal designs, such as the thread and the nozzle-shaped anode, on the discharge characteristics of the coaxial PPT. The experimental and simulation results indicate that the designed coaxial PPT laboratory model presents better discharge characteristics in view of its higher plasma density and greater thrust.
- vacuum,
- pulsed plasma thruster (PPT),
- cathode triple junction (CTJ),
- discharge characteristics,
- electric field distribution

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References (21)

References

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