{"created":"2023-06-20T15:10:22.771210+00:00","id":39960,"links":{},"metadata":{"_buckets":{"deposit":"a4d3c7ec-d698-47ac-b1a4-8341bb1c9f03"},"_deposit":{"created_by":1,"id":"39960","owners":[1],"pid":{"revision_id":0,"type":"depid","value":"39960"},"status":"published"},"_oai":{"id":"oai:jaxa.repo.nii.ac.jp:00039960","sets":["1887:1893","1896:1898:1913:1917"]},"author_link":["445791","445787","445792","445788","445784","445785","445790","445786","445793","445789"],"item_3_alternative_title_2":{"attribute_name":"その他のタイトル（英）","attribute_value_mlt":[{"subitem_alternative_title":"Observation of the cavitation in rocket turbopump inducer. 1st report: Effect of casing geometry"}]},"item_3_biblio_info_10":{"attribute_name":"書誌情報","attribute_value_mlt":[{"bibliographicIssueDates":{"bibliographicIssueDate":"1997-05","bibliographicIssueDateType":"Issued"},"bibliographicPageEnd":"11","bibliographicPageStart":"1","bibliographicVolumeNumber":"1325","bibliographic_titles":[{"bibliographic_title":"航空宇宙技術研究所報告"},{"bibliographic_title":"Technical Report of National Aerospace Laboratory","bibliographic_titleLang":"en"}]}]},"item_3_description_16":{"attribute_name":"抄録","attribute_value_mlt":[{"subitem_description":"LE-7(液体ロケットエンジン-7)用液酸ターボポンプの開発過程において問題となった、インデューサに発生する旋回キャビテーションは、ケーシング形状を変更することで解決できた。しかし、その発生過程を可視化などにおいて明らかにすることは実機ターボポンプでは困難であった。そこで、ターボポンプ試験において旋回キャビテーションの抑制を試みた代表的な3種類のケーシングを、航技研のキャビテーションタンネルを使用して可視観察を行い、ケーシング形状がキャビテーションに与える影響について調べた。実機ターボポンプにおいて問題となった従来型ケーシングではやはり広い流量範囲で旋回キャビテーションが生じ振動レベルも大きく、さらに低周波の振動も発生することが判明した。ストレート型ならびに改良型ケーシングは抑制効果が見られ、さらに改良型ケーシングは振動の軽減や低周波振動にも効果があることが確認された。これらの観察の結果、実機ターボポンプにおいて採用された改良型ケーシングの有効性が明らかになった。","subitem_description_type":"Abstract"}]},"item_3_description_17":{"attribute_name":"抄録（英）","attribute_value_mlt":[{"subitem_description":"Some observations of rotating cavitation in a rocket turbopump inducer were made with three types of casing: a modified, an original and a straight casing. Rotating cavitation was observed with the original casing at the design flow rate, but was not observed with the modified or the straight one. The region of occurrence of rotating cavitation with the modified or the straight casing seemed to be shifted to a higher flow rate range, which might be caused by the backflow at the inducer inlet. It is also reported that the low cycle oscillation that occurred after attached cavitation is related to rotating cavitation and attached cavitation.","subitem_description_type":"Other"}]},"item_3_description_32":{"attribute_name":"資料番号","attribute_value_mlt":[{"subitem_description":"資料番号: AA0001076000","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-1325","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 角田宇宙推進技術研究センター"},{"subitem_text_value":"航空宇宙技術研究所 角田宇宙推進技術研究センター"},{"subitem_text_value":"航空宇宙技術研究所 角田宇宙推進技術研究センター"},{"subitem_text_value":"航空宇宙技術研究所 角田宇宙推進技術研究センター"},{"subitem_text_value":"航空宇宙技術研究所 角田宇宙推進技術研究センター"}]},"item_3_text_7":{"attribute_name":"著者所属（英）","attribute_value_mlt":[{"subitem_text_language":"en","subitem_text_value":"National Aerospace Laboratory Kakuda Research Center"},{"subitem_text_language":"en","subitem_text_value":"National Aerospace Laboratory Kakuda Research Center"},{"subitem_text_language":"en","subitem_text_value":"National Aerospace Laboratory Kakuda Research Center"},{"subitem_text_language":"en","subitem_text_value":"National Aerospace Laboratory Kakuda Research Center"},{"subitem_text_language":"en","subitem_text_value":"National Aerospace Laboratory Kakuda Research Center"}]},"item_creator":{"attribute_name":"著者","attribute_type":"creator","attribute_value_mlt":[{"creatorNames":[{"creatorName":"渡邊, 光男"}],"nameIdentifiers":[{}]},{"creatorNames":[{"creatorName":"橋本, 知之"}],"nameIdentifiers":[{}]},{"creatorNames":[{"creatorName":"渡辺, 義明"}],"nameIdentifiers":[{}]},{"creatorNames":[{"creatorName":"長谷川, 敏"}],"nameIdentifiers":[{}]},{"creatorNames":[{"creatorName":"山田, 仁"}],"nameIdentifiers":[{}]},{"creatorNames":[{"creatorName":"Watanabe, Mitsuo","creatorNameLang":"en"}],"nameIdentifiers":[{}]},{"creatorNames":[{"creatorName":"Hashimoto, Tomoyuki","creatorNameLang":"en"}],"nameIdentifiers":[{}]},{"creatorNames":[{"creatorName":"Watanabe, Yoshiaki","creatorNameLang":"en"}],"nameIdentifiers":[{}]},{"creatorNames":[{"creatorName":"Hasegawa, Satoshi","creatorNameLang":"en"}],"nameIdentifiers":[{}]},{"creatorNames":[{"creatorName":"Yamada, Hitoshi","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":"2020-01-27"}],"displaytype":"detail","filename":"naltr0001325.pdf","filesize":[{"value":"344.4 kB"}],"format":"application/pdf","licensetype":"license_note","mimetype":"application/pdf","url":{"label":"naltr0001325.pdf","url":"https://jaxa.repo.nii.ac.jp/record/39960/files/naltr0001325.pdf"},"version_id":"6b0f5aef-ab1c-47f0-9b38-e1aea34970d4"}]},"item_keyword":{"attribute_name":"キーワード","attribute_value_mlt":[{"subitem_subject":"ロケットターボポンプ用インデューサ","subitem_subject_scheme":"Other"},{"subitem_subject":"液酸ターボポンプ","subitem_subject_scheme":"Other"},{"subitem_subject":"旋回キャビテーション","subitem_subject_scheme":"Other"},{"subitem_subject":"インデューサ・ケーシング","subitem_subject_scheme":"Other"},{"subitem_subject":"キャビテーション・トンネル","subitem_subject_scheme":"Other"},{"subitem_subject":"回転非同期軸振動","subitem_subject_scheme":"Other"},{"subitem_subject":"低周波振動","subitem_subject_scheme":"Other"},{"subitem_subject":"キャビテーション発生インデューサ不安定性","subitem_subject_scheme":"Other"},{"subitem_subject":"振動抑制","subitem_subject_scheme":"Other"},{"subitem_subject":"キャビティ逆流","subitem_subject_scheme":"Other"},{"subitem_subject":"rocket turbopump inducer","subitem_subject_language":"en","subitem_subject_scheme":"Other"},{"subitem_subject":"lox turbopump","subitem_subject_language":"en","subitem_subject_scheme":"Other"},{"subitem_subject":"rotating cavitation","subitem_subject_language":"en","subitem_subject_scheme":"Other"},{"subitem_subject":"inducer casing","subitem_subject_language":"en","subitem_subject_scheme":"Other"},{"subitem_subject":"cavitation tunnel","subitem_subject_language":"en","subitem_subject_scheme":"Other"},{"subitem_subject":"rotation asynchronous shaft vibration","subitem_subject_language":"en","subitem_subject_scheme":"Other"},{"subitem_subject":"low cycle oscillation","subitem_subject_language":"en","subitem_subject_scheme":"Other"},{"subitem_subject":"cavitating inducer instability","subitem_subject_language":"en","subitem_subject_scheme":"Other"},{"subitem_subject":"vibration suppression","subitem_subject_language":"en","subitem_subject_scheme":"Other"},{"subitem_subject":"cavity backflow","subitem_subject_language":"en","subitem_subject_scheme":"Other"}]},"item_language":{"attribute_name":"言語","attribute_value_mlt":[{"subitem_language":"jpn"}]},"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":"ロケットポンプ用インデューサに発生するキャビテーションの観察　その1:ケーシング形状による影響","item_titles":{"attribute_name":"タイトル","attribute_value_mlt":[{"subitem_title":"ロケットポンプ用インデューサに発生するキャビテーションの観察　その1:ケーシング形状による影響"}]},"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":"39960","relation_version_is_last":true,"title":["ロケットポンプ用インデューサに発生するキャビテーションの観察　その1:ケーシング形状による影響"],"weko_creator_id":"1","weko_shared_id":1},"updated":"2023-06-20T19:17:48.749148+00:00"}