@techreport{oai:jaxa.repo.nii.ac.jp:00001799,
 author = {清水, 敏文 and 渡邉, 恭子 and 川畑, 佑典 and 大場, 崇義 and 飯田, 佑輔 and Lee, Kyoung-Sun and 加納, 龍一 and 石川, 真之介 and 土井, 崇史 and 長谷川, 隆祥 and QuinteroNoda, Carlos and Shimizu, Toshifumi and Watanabe, Kyoko and Kawabata, Yusuke and Oba, Takayoshi and Iida, Yusuke and Lee, Kyoung-Sun and Kano, Ryuichi and Ishikawa, Shinnosuke and Doi, Takafumi and Hasegawa, Takahiro and QuinteroNoda, Carlos},
 month = {Oct},
 note = {フィルターホイールや連続回転機構などの回転駆動機構は, 宇宙科学研究において様々な新しい科学計測を可能にして, 豊富な観測機能や可能性が科学装置に付け加わる. 連続回転機構は, 宇宙望遠鏡の光路中におかれた波長板を回転させ, 観測する光線に含まれる偏光を精密に計測することが可能になる. 太陽光線中の偏光を計測することで, 太陽大気中の磁場を詳細に診断することができる. 次世代太陽観測ミッション計画SOLAR-Cで検討された太陽光学磁場診断望遠鏡(SUVIT)など, 宇宙望遠鏡で用いられる連続回転機構にとって, 非常に多数回数(10(exp 7)-10(exp 8)回転以上)を確実に行うことができる高い信頼性は不可欠である. 我々は, 連続回転駆動機構の試作品を開発した. 試作品は中空の大きな開口を持ち, 中空の大口径薄肉軸受と中空DCブラシレスモータを使用している. 真空環境下での寿命試験を通じて, 軸受周りの設計に改良を加える取組みの結果, 10(exp 8)回以上の回転を実現した. 試験に用いた試作品は現在国際観測ロケットCLASPとCLASP2及び国際大気球観測SUNRISE-3の精密偏光計測で活用されている., Rotation devices, such as filter wheels and continuous rotating mechanism, enable us to perform new kinds of scientific measurements valuable in space science and provide a rich number of observing functions and capabilities to scientific instruments. The concept of a continuous rotating mechanism is based on the rotation of a waveplate placed in the light path of telescopes for accurate measurements of the degree of polarization of the observed light. This degree of polarization can be used to diagnose the thermal and magnetic properties of the solar atmosphere. High reliability performance with a large number of operations (higher than 10(exp 7)-10(exp 8) rotations) is required for the continuous rotation mechanism used in space-borne telescopes, such as the Solar UV-Visible-near Infrared Telescope (SUVIT) for the next generation solar observing mission (SOLAR-C). In this regard, we completed the development of prototype continuous rotation mechanisms which have a large optical aperture with a pair of large-size thin section ball bearings and a hollow DC blushless motor. We achieved a number of operations higher than 10(exp 8) times by performing lifetime tests in a vacuum environment while upgrading the design of the bearings for improving their performance. These newly developed rotating mechanisms are employed in various solar missions such as the sounding rocket experiment CLASP and CLASP-2, and balloon-borne experiment SUNRISE-3., 形態: カラー図版あり, Physical characteristics: Original contains color illustrations, 資料番号: AA1830007000, レポート番号: JAXA-RR-18-003},
 title = {宇宙望遠鏡用連続回転駆動機構: 真空環境下での長寿命特性},
 year = {2018}
}