{"created":"2023-06-20T14:39:32.925995+00:00","id":6291,"links":{},"metadata":{"_buckets":{"deposit":"51216a73-3be7-4691-a0af-92420249ab02"},"_deposit":{"created_by":1,"id":"6291","owners":[1],"pid":{"revision_id":0,"type":"depid","value":"6291"},"status":"published"},"_oai":{"id":"oai:jaxa.repo.nii.ac.jp:00006291","sets":["1887:1893","9:789:1031:1060"]},"author_link":["31745","31743","31746","31748","31736","31739","31741","31749","31750","31747","31737","31740","31744","31738","31742","31735"],"item_3_alternative_title_2":{"attribute_name":"その他のタイトル（英）","attribute_value_mlt":[{"subitem_alternative_title":"Study on liquid lubrication in space"}]},"item_3_biblio_info_10":{"attribute_name":"書誌情報","attribute_value_mlt":[{"bibliographicIssueDates":{"bibliographicIssueDate":"2006-01-20","bibliographicIssueDateType":"Issued"},"bibliographicPageEnd":"176","bibliographicPageStart":"171","bibliographicVolumeNumber":"JAXA-SP-05-008","bibliographic_titles":[{"bibliographic_title":"宇宙航空研究開発機構特別資料: 平成16年度総合技術研究本部宇宙領域宇宙科学研究本部合同研究成果報告書:人工衛星系基盤技術"},{"bibliographic_title":"JAXA Special Publication: FY2004 Report of Joint Research Achievements of the Space Division of Institute of Aerospace Technology and Institute of Space and Astronautical Science: Basic Technologies of Satellite Systems","bibliographic_titleLang":"en"}]}]},"item_3_description_17":{"attribute_name":"抄録（英）","attribute_value_mlt":[{"subitem_description":"This paper describes three topics for the study on oil-lubricated ball bearings and lubricants in space. Firstly, a numerical study on EHL point contacts with nonuniform inlet film thickness, which results from repeated ball passings, is presented. At high values of speed and viscosity, the central film thickness can decrease with speed and viscosity, which agrees with common experimental experience. Secondly, downsized, high-resolution Laser Induced Fluorescence system for measuring oil film thickness of a ball bearing was developed in TIT/JAXA collaboration. The measurement with the LIF system revealed that the film thickness on the outer-raceway was decreased by repeated ball passings, and, finally, very thin film of approximately 0.41 micrometer was left to contribute to bearing lubrication. Lastly, some tribological properties of an ionic liquid were investigated by using a pin-on-disc friction and wear tester. Due to running-in, the coefficient of friction of the ionic liquid decreased with time to a very low value. Wear of the specimens lubricated with the ionic liquid was substantially comparable to that with a paraffin-based oil.","subitem_description_type":"Other"}]},"item_3_description_32":{"attribute_name":"資料番号","attribute_value_mlt":[{"subitem_description":"資料番号: AA0049054035","subitem_description_type":"Other"}]},"item_3_description_33":{"attribute_name":"レポート番号","attribute_value_mlt":[{"subitem_description":"レポート番号: JAXA-SP-05-008","subitem_description_type":"Other"}]},"item_3_publisher_8":{"attribute_name":"出版者","attribute_value_mlt":[{"subitem_publisher":"宇宙航空研究開発機構"}]},"item_3_publisher_9":{"attribute_name":"出版者（英）","attribute_value_mlt":[{"subitem_publisher":"Japan Aerospace Exploration Agency (JAXA)"}]},"item_3_source_id_21":{"attribute_name":"ISSN","attribute_value_mlt":[{"subitem_source_identifier":"1349-113X","subitem_source_identifier_type":"ISSN"}]},"item_3_source_id_24":{"attribute_name":"書誌レコードID","attribute_value_mlt":[{"subitem_source_identifier":"AA11984031","subitem_source_identifier_type":"NCID"}]},"item_3_text_6":{"attribute_name":"著者所属","attribute_value_mlt":[{"subitem_text_value":"宇宙航空研究開発機構 総合技術研究本部"},{"subitem_text_value":"宇宙航空研究開発機構 総合技術研究本部"},{"subitem_text_value":"宇宙航空研究開発機構 総合技術研究本部"},{"subitem_text_value":"宇宙航空研究開発機構 総合技術研究本部"},{"subitem_text_value":"宇宙航空研究開発機構 総合技術研究本部"},{"subitem_text_value":"宇宙航空研究開発機構 総合技術研究本部"},{"subitem_text_value":"宇宙航空研究開発機構 総合技術研究本部"},{"subitem_text_value":"宇宙航空研究開発機構 総合技術研究本部"}]},"item_3_text_7":{"attribute_name":"著者所属（英）","attribute_value_mlt":[{"subitem_text_language":"en","subitem_text_value":"Japan Aerospace Exploration Agency Institute of Space Technology and Aeronautics"},{"subitem_text_language":"en","subitem_text_value":"Japan Aerospace Exploration Agency Institute of Space Technology and Aeronautics"},{"subitem_text_language":"en","subitem_text_value":"Japan Aerospace Exploration Agency Institute of Space Technology and Aeronautics"},{"subitem_text_language":"en","subitem_text_value":"Japan Aerospace Exploration Agency Institute of Space Technology and Aeronautics"},{"subitem_text_language":"en","subitem_text_value":"Japan Aerospace Exploration Agency Institute of Space Technology and Aeronautics"},{"subitem_text_language":"en","subitem_text_value":"Japan Aerospace Exploration Agency Institute of Space Technology and Aeronautics"},{"subitem_text_language":"en","subitem_text_value":"Japan Aerospace Exploration Agency Institute of Space Technology and Aeronautics"},{"subitem_text_language":"en","subitem_text_value":"Japan Aerospace Exploration Agency Institute of Space Technology and Aeronautics"}]},"item_creator":{"attribute_name":"著者","attribute_type":"creator","attribute_value_mlt":[{"creatorNames":[{"creatorName":"鈴木, 峰男"}],"nameIdentifiers":[{}]},{"creatorNames":[{"creatorName":"佐々木, 彰"}],"nameIdentifiers":[{}]},{"creatorNames":[{"creatorName":"宮馬, 浩"}],"nameIdentifiers":[{}]},{"creatorNames":[{"creatorName":"小原, 新吾"}],"nameIdentifiers":[{}]},{"creatorNames":[{"creatorName":"田中, 康夫"}],"nameIdentifiers":[{}]},{"creatorNames":[{"creatorName":"野木, 高"}],"nameIdentifiers":[{}]},{"creatorNames":[{"creatorName":"市川, 信一郎"}],"nameIdentifiers":[{}]},{"creatorNames":[{"creatorName":"井澤, 克彦"}],"nameIdentifiers":[{}]},{"creatorNames":[{"creatorName":"Suzuki, Mineo","creatorNameLang":"en"}],"nameIdentifiers":[{}]},{"creatorNames":[{"creatorName":"Sasaki, Akira","creatorNameLang":"en"}],"nameIdentifiers":[{}]},{"creatorNames":[{"creatorName":"Miyaba, Hiroshi","creatorNameLang":"en"}],"nameIdentifiers":[{}]},{"creatorNames":[{"creatorName":"Obara, Shingo","creatorNameLang":"en"}],"nameIdentifiers":[{}]},{"creatorNames":[{"creatorName":"Tanaka, Yasuo","creatorNameLang":"en"}],"nameIdentifiers":[{}]},{"creatorNames":[{"creatorName":"Nogi, Takashi","creatorNameLang":"en"}],"nameIdentifiers":[{}]},{"creatorNames":[{"creatorName":"Ichikawa, Shinichiro","creatorNameLang":"en"}],"nameIdentifiers":[{}]},{"creatorNames":[{"creatorName":"Izawa, Katsuhiko","creatorNameLang":"en"}],"nameIdentifiers":[{}]}]},"item_files":{"attribute_name":"ファイル情報","attribute_type":"file","attribute_value_mlt":[{"accessrole":"open_date","date":[{"dateType":"Available","dateValue":"2020-01-16"}],"displaytype":"detail","filename":"49054035.pdf","filesize":[{"value":"1.2 MB"}],"format":"application/pdf","licensetype":"license_note","mimetype":"application/pdf","url":{"label":"49054035.pdf","url":"https://jaxa.repo.nii.ac.jp/record/6291/files/49054035.pdf"},"version_id":"df95cd3a-b648-49f8-9f90-2b330cc991c0"}]},"item_keyword":{"attribute_name":"キーワード","attribute_value_mlt":[{"subitem_subject":"宇宙機用潤滑","subitem_subject_scheme":"Other"},{"subitem_subject":"航空宇宙環境","subitem_subject_scheme":"Other"},{"subitem_subject":"ボールベアリング","subitem_subject_scheme":"Other"},{"subitem_subject":"弾性流体潤滑","subitem_subject_scheme":"Other"},{"subitem_subject":"トライボロジー","subitem_subject_scheme":"Other"},{"subitem_subject":"潤滑油","subitem_subject_scheme":"Other"},{"subitem_subject":"油膜","subitem_subject_scheme":"Other"},{"subitem_subject":"リアクションホイール","subitem_subject_scheme":"Other"},{"subitem_subject":"ジャイロスコープ","subitem_subject_scheme":"Other"},{"subitem_subject":"イオン性液体","subitem_subject_scheme":"Other"},{"subitem_subject":"spacecraft lubrication","subitem_subject_language":"en","subitem_subject_scheme":"Other"},{"subitem_subject":"aerospace environment","subitem_subject_language":"en","subitem_subject_scheme":"Other"},{"subitem_subject":"ball bearing","subitem_subject_language":"en","subitem_subject_scheme":"Other"},{"subitem_subject":"electro-hydrodynamic lubrication","subitem_subject_language":"en","subitem_subject_scheme":"Other"},{"subitem_subject":"tribology","subitem_subject_language":"en","subitem_subject_scheme":"Other"},{"subitem_subject":"lubricating oil","subitem_subject_language":"en","subitem_subject_scheme":"Other"},{"subitem_subject":"oil film","subitem_subject_language":"en","subitem_subject_scheme":"Other"},{"subitem_subject":"reaction wheel","subitem_subject_language":"en","subitem_subject_scheme":"Other"},{"subitem_subject":"gyroscope","subitem_subject_language":"en","subitem_subject_scheme":"Other"},{"subitem_subject":"ionic 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