@inproceedings{oai:jaxa.repo.nii.ac.jp:00007532, author = {卯尾, 匡史 and 白川, 健一 and 橋本, 樹明 and 久保田, 孝 and 川口, 淳一郎 and Uo, Masashi and Shirakawa, Kenichi and Hashimoto, Tatsuaki and Kubota, Takashi and Kawaguchi, Junichiro}, book = {第16回アストロダイナミクスシンポジウム講演後刷り集 2006, Proceedings of 16th Workshop on JAXA Astrodynamics and Flight Mechanics}, month = {Mar}, note = {はやぶさ(MUSES-C: Asteroid Sample-return Spacecraft)は2年間の巡航飛行の後、イトカワ近傍で2ヶ月の観測運用を行い、2005年の11月には2回のタッチダウンを実施した。イトカワ到着直前の2005年7月末に3台のうち1台目のホイールを失い、観測運用途中の10月初めに2台目を失った。1台故障時の姿勢制御方式はあらかじめバックアップ制御として姿勢制御系に組み込まれていたが、2台故障に対応するには、搭載系プログラムの1部変更と新規の地上ソフトウェアによる支援が必要であった。本報告では、RW(Reaction Wheel)故障時に実施した対策を、フライトデータをまじえて述べる。, Hayabusa (MUSES-C: Asteroid Sample-return Spacecraft) attempted to touch-down two times in November 2005 after two years of cruising and two months of proximity observation around ITOKAWA. One of three reaction wheels failed in late July 2005, and the second wheel failed in early October. While the attitude stabilization logic with two wheels was inherent in the onboard system, the stabilization with one wheel required the use of onboard re-programming function and special ground support operations. This paper describes how the attitude control system and operation were adapted to cope with the loss of reaction wheels, along with the introduction of attitude control system that was designed to realize various attitude functions with minimum onboard resources., 資料番号: AA0063481031}, pages = {179--184}, publisher = {宇宙航空研究開発機構宇宙科学研究本部, Institute of Space and Astronautical Science, Japan Aerospace Exploration Agency (JAXA/ISAS)}, title = {Attitude control challenges and solutions for Hayabusa spacecraft}, year = {2007} }