{"created":"2023-06-20T15:15:07.993398+00:00","id":45190,"links":{},"metadata":{"_buckets":{"deposit":"774a08a9-ead7-4233-b420-194e19bdede0"},"_deposit":{"created_by":1,"id":"45190","owners":[1],"pid":{"revision_id":0,"type":"depid","value":"45190"},"status":"published"},"_oai":{"id":"oai:jaxa.repo.nii.ac.jp:00045190","sets":["1887:1893","1896:1898:1913:1917"]},"author_link":["473392","473388","473386","473387","473390","473385","473391","473389"],"item_3_alternative_title_1":{"attribute_name":"その他のタイトル","attribute_value_mlt":[{"subitem_alternative_title":"水平軸風車の回転数制御に関する研究"}]},"item_3_biblio_info_10":{"attribute_name":"書誌情報","attribute_value_mlt":[{"bibliographicIssueDates":{"bibliographicIssueDate":"1987-05","bibliographicIssueDateType":"Issued"},"bibliographicPageStart":"42","bibliographicVolumeNumber":"931","bibliographic_titles":[{"bibliographic_title":"航空宇宙技術研究所報告"},{"bibliographic_title":"Technical Report of National Aerospace Laboratory TR-931","bibliographic_titleLang":"en"}]}]},"item_3_description_17":{"attribute_name":"抄録（英）","attribute_value_mlt":[{"subitem_description":"The rotor speed control of windmills plays an essential roll in their practical use. Rotor speed control technology is indispensable not only in attainning a high level of energy conversion efficiency but also in avoiding damage to the windmill rotor system under very strong wind conditions. The present study was conducted as a part of the component technology research and development program for the 20kw horizontal axis windmill system development project sponsored by the Science and Technology Agency of the Japanese government. A hydraulic pitch control system for a 1kw class windmill (a pioneering sub-scale model for the 20kw windmill) was developed and improved through repeated tests in the NAL low speed wind tunnel and through outdoor tests. Our original application of the electromagnetic proportional hydro-relief valve to the hydraulic pitch control system of windmills brought an outstanding reduction of the variation in windmill rotational speed. The test results confirm the excellent characteristics of the windmill rotor speed control. The practicality of the hydraulic pitch control system has been proving itself in the 20kw windmill operation since December 1985.","subitem_description_type":"Other"}]},"item_3_description_32":{"attribute_name":"資料番号","attribute_value_mlt":[{"subitem_description":"資料番号: NALTR0931000","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: NAL TR-931","subitem_description_type":"Other"}]},"item_3_publisher_8":{"attribute_name":"出版者","attribute_value_mlt":[{"subitem_publisher":"航空宇宙技術研究所"}]},"item_3_publisher_9":{"attribute_name":"出版者（英）","attribute_value_mlt":[{"subitem_publisher":"National Aerospace Laboratory(NAL)"}]},"item_3_source_id_21":{"attribute_name":"ISSN","attribute_value_mlt":[{"subitem_source_identifier":"0389-4010","subitem_source_identifier_type":"ISSN"}]},"item_3_text_6":{"attribute_name":"著者所属","attribute_value_mlt":[{"subitem_text_value":"航空宇宙技術研究所空気力学第二部"},{"subitem_text_value":"航空宇宙技術研究所空気力学第二部"},{"subitem_text_value":"航空宇宙技術研究所空気力学第二部"},{"subitem_text_value":"航空宇宙技術研究所空気力学第二部"}]},"item_3_text_7":{"attribute_name":"著者所属（英）","attribute_value_mlt":[{"subitem_text_language":"en","subitem_text_value":"Second Aerodynamics Division, National Aerospace Laboratory(NAL)"},{"subitem_text_language":"en","subitem_text_value":"Second Aerodynamics Division, National Aerospace Laboratory(NAL)"},{"subitem_text_language":"en","subitem_text_value":"Second Aerodynamics Division, National Aerospace Laboratory(NAL)"},{"subitem_text_language":"en","subitem_text_value":"Second Aerodynamics Division, National Aerospace Laboratory(NAL)"}]},"item_creator":{"attribute_name":"著者","attribute_type":"creator","attribute_value_mlt":[{"creatorNames":[{"creatorName":"外立, 政隆"}],"nameIdentifiers":[{}]},{"creatorNames":[{"creatorName":"半沢, 麻雄"}],"nameIdentifiers":[{}]},{"creatorNames":[{"creatorName":"室田, 勝一"}],"nameIdentifiers":[{}]},{"creatorNames":[{"creatorName":"野口, 正芳"}],"nameIdentifiers":[{}]},{"creatorNames":[{"creatorName":"HASHIDATE, Masataka","creatorNameLang":"en"}],"nameIdentifiers":[{}]},{"creatorNames":[{"creatorName":"HANZAWA, Asao","creatorNameLang":"en"}],"nameIdentifiers":[{}]},{"creatorNames":[{"creatorName":"MUROTA, Katsuichi","creatorNameLang":"en"}],"nameIdentifiers":[{}]},{"creatorNames":[{"creatorName":"NOGUCHI, Masayoshi","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":"2020-01-29"}],"displaytype":"detail","filename":"naltr00931.pdf","filesize":[{"value":"3.2 MB"}],"format":"application/pdf","licensetype":"license_note","mimetype":"application/pdf","url":{"label":"naltr00931.pdf","url":"https://jaxa.repo.nii.ac.jp/record/45190/files/naltr00931.pdf"},"version_id":"e2c5a266-ffcd-4910-9230-5d94fdb12445"}]},"item_language":{"attribute_name":"言語","attribute_value_mlt":[{"subitem_language":"eng"}]},"item_resource_type":{"attribute_name":"資源タイプ","attribute_value_mlt":[{"resourcetype":"technical report","resourceuri":"http://purl.org/coar/resource_type/c_18gh"}]},"item_title":"Study on a Rotor Speed Control System for a Horizontal Axis Windmill","item_titles":{"attribute_name":"タイトル","attribute_value_mlt":[{"subitem_title":"Study on a Rotor Speed Control System for a Horizontal Axis Windmill","subitem_title_language":"en"}]},"item_type_id":"3","owner":"1","path":["1893","1917"],"pubdate":{"attribute_name":"公開日","attribute_value":"2015-03-26"},"publish_date":"2015-03-26","publish_status":"0","recid":"45190","relation_version_is_last":true,"title":["Study on a Rotor Speed Control System for a Horizontal Axis Windmill"],"weko_creator_id":"1","weko_shared_id":-1},"updated":"2023-06-20T21:43:42.761979+00:00"}