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Influence of mechanical damage generated by small space debris on electrostatic discharge
Cai, MingHui; Li, HongWei; Han, JianWei; Cai, MingHui (caiminghui@nssc.ac.cn)
Department保障部/保障与试验验证中心
Source PublicationScience China-Earth Sciences
2015
Pages1-7
ISSN1674-7313
Language英语
AbstractRecent studies have indicated that hypervelocity impacts by meteoroids and space debris can induce spacecraft anomalies. However, the basic physical process through which space debris impacts cause anomalies is not entirely clear. Currently, impact-generated plasma is thought to be the primary cause of electrical spacecraft anomalies, while the effects of impact- generated mechanical damage have rarely been researched. This paper presents new evidence showing that impact- generated mechanical damage strongly influences electrostatic discharge. Hypervelocity impact experiments were conducted in a plasma drag particle accelerator, using particles with diameters of 200–500 µm and velocities of 2–7 km/s. The impact-generated mechanical damage on a specimen surface was measured by a stereoscopic microscope and 3D Profilometer and it indicated that microscopic irregularities around the impact crater could be responsible for local electric field enhancement. Furthermore, the influence of impact-generated mechanical damage on electrostatic discharge was simulated in an inverted potential gradient situation. The experimental results show that the electrostatic discharge voltage threshold was significantly reduced after the specimen was impacted by particles. © 2015 Science China Press and Springer-Verlag Berlin Heidelberg
Indexed BySCI ; EI
Document Type期刊论文
Identifierhttp://ir.nssc.ac.cn/handle/122/5264
Collection保障部/保障与试验验证中心
Corresponding AuthorCai, MingHui (caiminghui@nssc.ac.cn)
Recommended Citation
GB/T 7714
Cai, MingHui,Li, HongWei,Han, JianWei,et al. Influence of mechanical damage generated by small space debris on electrostatic discharge[J]. Science China-Earth Sciences,2015:1-7.
APA Cai, MingHui,Li, HongWei,Han, JianWei,&Cai, MingHui .(2015).Influence of mechanical damage generated by small space debris on electrostatic discharge.Science China-Earth Sciences,1-7.
MLA Cai, MingHui,et al."Influence of mechanical damage generated by small space debris on electrostatic discharge".Science China-Earth Sciences (2015):1-7.
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