{"created":"2023-06-20T14:36:14.281125+00:00","id":2549,"links":{},"metadata":{"_buckets":{"deposit":"2b23352b-c8c1-4356-ac48-141d7b728c1d"},"_deposit":{"created_by":1,"id":"2549","owners":[1],"pid":{"revision_id":0,"type":"depid","value":"2549"},"status":"published"},"_oai":{"id":"oai:jaxa.repo.nii.ac.jp:00002549","sets":["1887:1893","9:1090:1186:1204"]},"author_link":["7175","7180","7182","7176","7179","7177","7178","7181"],"item_3_alternative_title_2":{"attribute_name":"その他のタイトル（英）","attribute_value_mlt":[{"subitem_alternative_title":"Study of Acoustic Cavitation Surge in a Turbopump using One-dimensional Nonlinear Analyses"}]},"item_3_biblio_info_10":{"attribute_name":"書誌情報","attribute_value_mlt":[{"bibliographicIssueDates":{"bibliographicIssueDate":"2011-11-30","bibliographicIssueDateType":"Issued"},"bibliographicPageEnd":"9","bibliographicPageStart":"1","bibliographicVolumeNumber":"JAXA-RM-11-006","bibliographic_titles":[{"bibliographic_title":"宇宙航空研究開発機構研究開発資料"},{"bibliographic_title":"JAXA Research and Development Memorandum","bibliographic_titleLang":"en"}]}]},"item_3_description_17":{"attribute_name":"抄録（英）","attribute_value_mlt":[{"subitem_description":"The cavitation surge is a kind of instability phenomenon generated in a liquid rocket engine, and it is known that when the inlet pressure of the turbopump of the engine is decreased, the frequency of cavitation surge continuously varied. On the other hand, it was observed in a turbopump test conducted in JAXA that the frequency of cavitation surge discontinuously decreased when the inlet pressure was decreased. Aiming at explaining this curious phenomenon, we conducted the linear analysis using the frequency-domain method and found that this phenomenon was a kind of self-excited vibration coupling the cavitation characteristics with the acoustic resonance of the inlet pipeline. However, the linear analysis could not simulate the phenomenon that a frequency of standing wave changed to the other mode at a certain inlet pressure. Therefore, we conducted the nonlinear analysis using the one-dimensional time-domain method. As a result, it was found that when the inlet pressure was decreased, the damping effect became larger in the higher frequency oscillation because of nonlinear factors. Consequently, the oscillation of higher frequency was intensely weakened and the oscillation of lower one appeared instead.","subitem_description_type":"Other"}]},"item_3_description_18":{"attribute_name":"内容記述","attribute_value_mlt":[{"subitem_description":"形態: カラー図版あり","subitem_description_type":"Other"}]},"item_3_description_19":{"attribute_name":"内容記述（英）","attribute_value_mlt":[{"subitem_description":"Physical characteristics: Original contains color illustrations","subitem_description_type":"Other"}]},"item_3_description_32":{"attribute_name":"資料番号","attribute_value_mlt":[{"subitem_description":"資料番号: AA0065097000","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-RM-11-006","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":"1349-1121","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":"AA11983593","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宇宙輸送ミッション本部宇宙輸送系推進技術研究開発センター"},{"subitem_text_value":"東北大学大学院工学研究科機械系"},{"subitem_text_value":"宇宙航空研究開発機構宇宙輸送ミッション本部宇宙輸送系推進技術研究開発センター"},{"subitem_text_value":"宇宙航空研究開発機構宇宙輸送ミッション本部宇宙輸送系推進技術研究開発センター"}]},"item_3_text_7":{"attribute_name":"著者所属（英）","attribute_value_mlt":[{"subitem_text_language":"en","subitem_text_value":"Space Transportation Propulsion Research and Development Center, Space Transportation Mission Directorate, Japan Aerospace Exploration Agency  (JAXA)"},{"subitem_text_language":"en","subitem_text_value":"Division of Mechanical Engineering, Graduate School of Engineering, Tohoku University"},{"subitem_text_language":"en","subitem_text_value":"Space Transportation Propulsion Research and Development Center, Space Transportation Mission Directorate, Japan Aerospace Exploration Agency  (JAXA)"},{"subitem_text_language":"en","subitem_text_value":"Space Transportation Propulsion Research and Development Center, Space Transportation Mission Directorate, Japan Aerospace Exploration Agency (JAXA)"}]},"item_creator":{"attribute_name":"著者","attribute_type":"creator","attribute_value_mlt":[{"creatorNames":[{"creatorName":"南里, 秀明"}],"nameIdentifiers":[{}]},{"creatorNames":[{"creatorName":"藤原, 徹也"}],"nameIdentifiers":[{}]},{"creatorNames":[{"creatorName":"河南, 広紀"}],"nameIdentifiers":[{}]},{"creatorNames":[{"creatorName":"吉田, 義樹"}],"nameIdentifiers":[{}]},{"creatorNames":[{"creatorName":"Nanri, Hideaki","creatorNameLang":"en"}],"nameIdentifiers":[{}]},{"creatorNames":[{"creatorName":"Fujiwara, Tetsuya","creatorNameLang":"en"}],"nameIdentifiers":[{}]},{"creatorNames":[{"creatorName":"Kannan, Hiroki","creatorNameLang":"en"}],"nameIdentifiers":[{}]},{"creatorNames":[{"creatorName":"Yoshida, Yoshiki","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":"2020-01-15"}],"displaytype":"detail","filename":"65097000.pdf","filesize":[{"value":"2.9 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