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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
Source PublicationPLASMA SOURCES SCIENCE & TECHNOLOGY
2019-02-01
Volume28Issue:2Pages:AR25008
ISSN0963-0252
AbstractThe 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.
Keywordablative pulsed plasma thruster segmented anode ultra-high-speed camera arc morphology
DOI10.1088/1361-6595/ab0062
Indexed BySCI ; EI
Language英语
WOS IDWOS:000459883200001
WOS Research AreaPhysics, Fluids & Plasmas
WOS SubjectPhysics
Classification一类
Ranking5+
Citation statistics
Document Type期刊论文
Identifierhttp://dspace.imech.ac.cn/handle/311007/78515
Collection高温气体动力学国家重点实验室
Affiliation1.{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
Recommended Citation
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.
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