JAXA Repository / AIREX 未来へ続く、宙(そら)への英知
61912005.pdf1.32 MB
titleHTV電力系の軌道上運用による設計評価と高度化検討
Other TitleEvaluation of HTV Electrical Power System and Design Improvement by On-orbit Operation compared with Simulation
Author(jpn)川崎, 治; 辻田, 大輔; 市川, 千秋
Author(eng)Kawasaki, Osamu; Tsujita, Daisuke; Ichikawa, Chiaki
Author Affiliation(jpn)宇宙航空研究開発機構宇宙科学研究所(JAXA)(ISAS) : 宇宙航空研究開発機構有人宇宙環境利用ミッション本部HTVプロジェクトチーム(JAXA); 宇宙航空研究開発機構有人宇宙環境利用ミッション本部HTVプロジェクトチーム(JAXA); 宇宙航空研究開発機構有人宇宙環境利用ミッション本部HTVプロジェクトチーム(JAXA)
Author Affiliation(eng)Institute of Space and Astronautical Science, Japan Aerospace Exploration Agency (JAXA)(ISAS) : HTV Project Team (H-II Transfer Vehicle Project Team), Human Space Systems and Utilization Mission Directorate, Japan Aerospace Exploration Agency (JAXA); HTV Project Team (H-II Transfer Vehicle Project Team), Human Space Systems and Utilization Mission Directorate, Japan Aerospace Exploration Agency (JAXA); HTV Project Team (H-II Transfer Vehicle Project Team), Human Space Systems and Utilization Mission Directorate, Japan Aerospace Exploration Agency (JAXA)
Issue Date2013-03
Publisher宇宙航空研究開発機構宇宙科学研究所(JAXA)(ISAS)
Institute of Space and Astronautical Science, Japan Aerospace Exploration Agency (JAXA)(ISAS)
Publication title第32回宇宙エネルギーシンポジウム
32nd ISAS Space Energy Symposium
Start page1
End page4
Publication date2013-03
Languagejpn
eng
AbstractH-II Transfer Vehicle (HTV) is an unmanned cargo transfer vehicle to the International Space Station (ISS) developed and built by JAXA. HTV delivers supplies to the ISS and planned to be launched seven in total. To approach the manned base ISS safely, HTV have to keep power distribution to its system even if at the worst situation. A common design approach for Electrical Power System (EPS) in past unmanned spacecraft was the Design for Minimum Risk such that the highly reliable single electrical bus provides power to the system. However, the single bus can mitigate the risk of the loss of bus but the possibility of the loss of bus can not be denied. HTV EPS promoted Failure Tolerant Design and achieved the ISS common requirement of Two Failure Tolerant for Safe. HTV EPS applied redundancy to the bus system and placed circuits around bus system not to propagate failures especially short circuits. HTV EPS consists of 120 V system and 50 V system. 50 V system maintains HTV function such as Guidance, Navigation and Control (GNC) system, Data Handling (DH) system, and Communication (COM) system. 120 V system received power from the ISS during the attached phase and provides power to the pressurized section of the HTV where the ISS crew can enter. 120 V system also convert power to 50 V system and keep HTV function during the attached phase. This paper gives an outline of HTV 50 V system, its characteristics, power control design and its operation and on-orbit data compared with simulation on ground. HTV is an transportation vehicle so that its recurring cost is one of the most important parameter in procurement. As an HTV improvement activity, authors evaluated HTV EPS design comparing on-orbit operation result with simulation on ground from the aspect of power balance between provision and consumption and had a success of optimization of amount of solar array in subsequent HTVs.
Description会議情報: 第32回エネルギーシンポジウム (2013年3月1日. 宇宙航空研究開発機構宇宙科学研究所(JAXA)(ISAS)), 相模原市, 神奈川県
形態: カラー図版あり
形態: PDF
Meeting Information: The Space Energy Symposium (March 1, 2013. Institute of Space and Astronautical Science, Japan Aerospace Exploration Agency (JAXA)(ISAS)), Sagamihara, Kanagawa Japan
Physical characteristics: Original contains color illustrations
Physical characteristics: PDF
Document TypeConference Paper
JAXA Categoryシンポジウム・研究会
SHI-NOAA0061912005
Report NoSES-2012-005
URIhttps://repository.exst.jaxa.jp/dspace/handle/a-is/21422


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