The plasma morphology of an asymmetric electrode ablative pulsed plasma thruster

doi:10.1088/1361-6595/ab0062

CORC > 力学研究所 > 中国科学院力学研究所 > 高温气体动力学国家重点实验室

	The plasma morphology of an asymmetric electrode ablative pulsed plasma thruster
	Zhang Z ; Ling WYL ; Ren JX ; Tang HB; Cao JB ; Lin X(林鑫); York TM
刊名	PLASMA SOURCES SCIENCE & TECHNOLOGY
	2019-02-01
卷号	28 期号:2 页码:AR25008
关键词	ablative pulsed plasma thruster segmented anode ultra-high-speed camera arc morphology
ISSN号	0963-0252
DOI	10.1088/1361-6595/ab0062
英文摘要	The ablative pulsed plasma thruster (APPT) is a typical form of electric propulsion that is highly suitable for micro-satellites. However, its low performance has been a main drawback. Recently, an asymmetric segmented anode schematic was shown to enhance the performance of APPTs. The improved thrust performance obtained with the use of a segmented anode can potentially enable promising applications in future space tasks. To further understand the physical processes behind a segmented anode APPT, experiments using an ultra-high-speed camera, narrow bandpass filters, and a magnetic probe were conducted with both normal parallel-plate electrodes and a segmented anode on an experimental APPT. Successive images of light emission from C+, neutral C-2, and broadband emission reveal the evolution of the plasma morphology on an APPT with a segmented anode. The magnetic field strength profiles show that the inter-electrode plasma propagation velocity of a segmented anode APPT is approximately 19 km s(-1 However, the similar order of magnitude suggests a similar downstream acceleration mechanism between the two. The arc morphology observed in the high-speed images shows that the segmented anode APPT with asymmetric electrodes has a restricted arc attachment point, possibly resulting in stronger arc current density at the anode corner. This should result in higher ionization and ablation when compared with a normal anode APPT. Based on the results here, we hypothesize that the segmented anode APPT may be able to better utilize the restrike energy in the propellant ionization process. This fundamentally changes the physical process behind APPT operation, meaning that the improvements should also be applicable to other APPT designs. It can also be adopted as an additional step in the overall optimization of an APPT design.
分类号	一类
WOS研究方向	Physics, Fluids & Plasmas
语种	英语
WOS记录号	WOS:000459883200001
其他责任者	Tang, HB
内容类型	期刊论文
源URL	[http://dspace.imech.ac.cn/handle/311007/78515]
专题	力学研究所_高温气体动力学国家重点实验室
作者单位	1.{Zhang, Zhe} Beihang Univ, Sch Instrumentat & Optoelect Engn, Beijing 100191, Peoples R China 2.{Ling, William Yeong Liang} Beijing Inst Technol, Sch Aerosp Engn, Beijing 100081, Peoples R China 3.{Ren, Junxue} Beihang Univ, Sch Astronaut, Beijing 100191, Peoples R China 4.{Tang, Haibin、Cao, Jinbin} Beihang Univ, Sch Space & Environm, Beijing 100191, Peoples R China 5.{Lin, Xin} Chinese Acad Sci, Inst Mech, Beijing 100080, Peoples R China 6.{York, Thomas M} Ohio State Univ, Columbus, OH 43235 USA
推荐引用方式 GB/T 7714	Zhang Z,Ling WYL,Ren JX,et al. The plasma morphology of an asymmetric electrode ablative pulsed plasma thruster[J]. PLASMA SOURCES SCIENCE & TECHNOLOGY,2019,28(2):AR25008.
APA	Zhang Z.,Ling WYL.,Ren JX.,Tang HB.,Cao JB.,...&York TM.(2019).The plasma morphology of an asymmetric electrode ablative pulsed plasma thruster.PLASMA SOURCES SCIENCE & TECHNOLOGY,28(2),AR25008.
MLA	Zhang Z,et al."The plasma morphology of an asymmetric electrode ablative pulsed plasma thruster".PLASMA SOURCES SCIENCE & TECHNOLOGY 28.2(2019):AR25008.