{"created":"2023-06-20T15:10:40.154308+00:00","id":40246,"links":{},"metadata":{"_buckets":{"deposit":"c65a2c3e-602a-4c7e-8ea7-5894ea23b2ac"},"_deposit":{"created_by":1,"id":"40246","owners":[1],"pid":{"revision_id":0,"type":"depid","value":"40246"},"status":"published"},"_oai":{"id":"oai:jaxa.repo.nii.ac.jp:00040246","sets":["1887:1893","1896:1898:1913:1917"]},"author_link":["447010","447015","447021","447011","447014","447018","447017","447013","447012","447016","447019","447020"],"item_3_alternative_title_2":{"attribute_name":"その他のタイトル（英）","attribute_value_mlt":[{"subitem_alternative_title":"Suppression of super-synchronous vibration of the LE-7 LOX pump inducer"}]},"item_3_biblio_info_10":{"attribute_name":"書誌情報","attribute_value_mlt":[{"bibliographicIssueDates":{"bibliographicIssueDate":"1998-07","bibliographicIssueDateType":"Issued"},"bibliographicPageEnd":"16","bibliographicPageStart":"1","bibliographicVolumeNumber":"1359","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液酸ターボポンプの開発過程において、初めて回転非同期の軸振動が問題となった。この振動は詳細な検討の結果、インデューサに発生する旋回キャビテーションに誘発されたものと判断できた。旋回キャビテーションは、その発生形態からチップキャビテーションと深くかかわっていることが推定できた。そこで、チップ隙間を変えた数種類のインデューサ入口リングを製作して試験をかさねた結果、ある一定の条件のもとにインデューサ入口を広げた形状において旋回キャビテーションはほぼ消滅することが判明した。また、このケーシング形状は揚程の落込みなどもみられず安定することが確認された。","subitem_description_type":"Abstract"}]},"item_3_description_17":{"attribute_name":"抄録（英）","attribute_value_mlt":[{"subitem_description":"During development of the liquid oxygen turbopump of the LE-7 (Liquid rocket Engine-7) engine, super synchronous shaft vibrations with a frequency of about 1.0 - 1.2 times that of the turbopump shaft rotational speed were often observed as the pump inlet pressure decreased. From the investigations of the cavitating inducer, it was shown that those super synchronous vibrations were caused by rotating cavitation and it deeply related with tip cavitation in the inducer. Cavitation tests of the liquid oxygen turbopump were performed to suppress these super synchronous vibrations using geometrically different inducer inlet suction rings. Tests were conducted using liquid nitrogen as working fluid at the high pressure turbopump test facility at the Kakuda Research Center. Results of these tests showed that an inducer inlet suction ring with moderately increased diameter of the inducer inlet was most effective to suppress rotating cavitation and it was also shown that the inducer delivery pressure did not change even when the cavitation number decreased.","subitem_description_type":"Other"}]},"item_3_description_32":{"attribute_name":"資料番号","attribute_value_mlt":[{"subitem_description":"資料番号: AA0001576000","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-1359","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"},{"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"},{"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":"渡邉, 光男"}],"nameIdentifiers":[{}]},{"creatorNames":[{"creatorName":"長谷川, 敏"}],"nameIdentifiers":[{}]},{"creatorNames":[{"creatorName":"渡辺, 義明"}],"nameIdentifiers":[{}]},{"creatorNames":[{"creatorName":"橋本, 知之"}],"nameIdentifiers":[{}]},{"creatorNames":[{"creatorName":"吉田, 誠"}],"nameIdentifiers":[{}]},{"creatorNames":[{"creatorName":"山田, 仁"}],"nameIdentifiers":[{}]},{"creatorNames":[{"creatorName":"Watanabe, Mitsuo","creatorNameLang":"en"}],"nameIdentifiers":[{}]},{"creatorNames":[{"creatorName":"Hasegawa, Satoshi","creatorNameLang":"en"}],"nameIdentifiers":[{}]},{"creatorNames":[{"creatorName":"Watanabe, Yoshiaki","creatorNameLang":"en"}],"nameIdentifiers":[{}]},{"creatorNames":[{"creatorName":"Hashimoto, Tomoyuki","creatorNameLang":"en"}],"nameIdentifiers":[{}]},{"creatorNames":[{"creatorName":"Yoshida, Makoto","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":"naltr0001359.pdf","filesize":[{"value":"856.4 kB"}],"format":"application/pdf","licensetype":"license_note","mimetype":"application/pdf","url":{"label":"naltr0001359.pdf","url":"https://jaxa.repo.nii.ac.jp/record/40246/files/naltr0001359.pdf"},"version_id":"7852bbae-75e8-41ae-a206-5b1375aaf195"}]},"item_keyword":{"attribute_name":"キーワード","attribute_value_mlt":[{"subitem_subject":"液体酸素ターボポンプ","subitem_subject_scheme":"Other"},{"subitem_subject":"インデューサ","subitem_subject_scheme":"Other"},{"subitem_subject":"軸振動","subitem_subject_scheme":"Other"},{"subitem_subject":"非同期振動","subitem_subject_scheme":"Other"},{"subitem_subject":"チップ隙間","subitem_subject_scheme":"Other"},{"subitem_subject":"旋回キャビターション","subitem_subject_scheme":"Other"},{"subitem_subject":"H-2ロケット","subitem_subject_scheme":"Other"},{"subitem_subject":"液体ロケットエンジン","subitem_subject_scheme":"Other"},{"subitem_subject":"liquid oxygen turbopump","subitem_subject_language":"en","subitem_subject_scheme":"Other"},{"subitem_subject":"inducer","subitem_subject_language":"en","subitem_subject_scheme":"Other"},{"subitem_subject":"shaft vibration","subitem_subject_language":"en","subitem_subject_scheme":"Other"},{"subitem_subject":"non synchronous vibration","subitem_subject_language":"en","subitem_subject_scheme":"Other"},{"subitem_subject":"tip cavitation","subitem_subject_language":"en","subitem_subject_scheme":"Other"},{"subitem_subject":"rotating cavitation","subitem_subject_language":"en","subitem_subject_scheme":"Other"},{"subitem_subject":"H 2 rocket","subitem_subject_language":"en","subitem_subject_scheme":"Other"},{"subitem_subject":"liquid rocket engine","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":"LE-7液酸ターボポンプインデューサの回転非同期軸振動の抑制","item_titles":{"attribute_name":"タイトル","attribute_value_mlt":[{"subitem_title":"LE-7液酸ターボポンプインデューサの回転非同期軸振動の抑制"}]},"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":"40246","relation_version_is_last":true,"title":["LE-7液酸ターボポンプインデューサの回転非同期軸振動の抑制"],"weko_creator_id":"1","weko_shared_id":1},"updated":"2023-06-20T19:16:22.204695+00:00"}