JAXA Repository / AIREX 未来へ続く、宙(そら)への英知

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title半導電性コーティングテザーの放電特性評価
Other TitleDischarge characterization of semi-conductive coating tether
Author(jpn)柴垣, 龍之介; 増井, 博一; 豊田, 和弘; 趙, 孟佑; 大川, 恭志; 河本, 聡美
Author(eng)Shibagaki, Ryunosuke; Masui, Hirokazu; Toyoda, Kazuhiro; Cho, Mengu; Okawa, Yasushi; Kawamoto, Satomi
Author Affiliation(jpn)九州工業大学; 九州工業大学; 九州工業大学; 九州工業大学; 宇宙航空研究開発機構 (JAXA); 宇宙航空研究開発機構 (JAXA)
Author Affiliation(eng)Kyushu Institute of Technology; Kyushu Institute of Technology; Kyushu Institute of Technology; Kyushu Institute of Technology; Japan Aerospace Exploration Agency (JAXA); Japan Aerospace Exploration Agency (JAXA)
Issue Date2011-05-17
PublisherInstitute of Space and Astronautical Science, Japan Aerospace Exploration Agency (JAXA)
宇宙航空研究開発機構宇宙科学研究所
Publication title30th ISAS Space Energy Symposium
第30回宇宙エネルギーシンポジウム
Publication date2011-05-17
Languagejpn
eng
AbstractThe Electrodynamic Tether (EDT) system promises the propellant-less propulsion using Lorentz force induced by the geomagnetic field. The EDT deploys a long conductive tether in space and emits and collects electrons at both ends to make the current flow in the tether. The bare tether is one of the electron collectors for EDT. Advantage of the bare tether is simple, low cost and efficient electron collection.. Exposing the conductive tether directly to ionosphere, however, may cause some problems, such as discharge, anomalous current collection by ionization of neutral gases and heating. These phenomena can break the tether at the worst case. The objective of this study is to investigate the interactions between the bare tether and ionospheric plasma. This study is being conducted as a joint project with JAXA as a part of orbital demonstration mission. In JAXA, EDT system is regarded as a strong candidate for future orbital debris removal mission.We used a vacuum chamber simulating LEO plasma environment by ECR plasma source (Electron density : 10(exp 12)[m(exp -3)]). We biased the test bare tether samples positively or negatively in the chamber and investigated their current collection and threshold potential of discharging. We studied the discharge suppression at the boundary between the insulator part and the bare part of EDT which may expose triple-junction becomes the source of discharge.
DescriptionPhysical characteristics: Original contains color illustrations
Meeting Information: The thirtieth Space Energy Symposium (February 25, 2011. Institute of Space and Astronautical Science, Japan Aerospace Exploration Agency(JAXA)(ISAS)), Sagamihara, Kanagawa Japan
Note: One CD-ROM
形態: カラー図版あり
会議情報: 第30回宇宙エネルギーシンポジウム(2011年2月25日, 宇宙航空研究開発機構宇宙科学研究所相模原キャンパス), 相模原市, 神奈川県
形態: CD-ROM1枚
Document TypeConference Paper
JAXA Categoryシンポジウム・研究会
NCIDAN10324356
SHI-NOAA0065107012
URIhttps://repository.exst.jaxa.jp/dspace/handle/a-is/13794


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