{"created":"2023-06-20T15:11:31.221170+00:00","id":41197,"links":{},"metadata":{"_buckets":{"deposit":"ab0648db-101b-4911-bbb4-1eba2407d9b6"},"_deposit":{"created_by":1,"id":"41197","owners":[1],"pid":{"revision_id":0,"type":"depid","value":"41197"},"status":"published"},"_oai":{"id":"oai:jaxa.repo.nii.ac.jp:00041197","sets":["1887:1893","1896:1898:1913:1917"]},"author_link":["451109","451110","451112","451113","451108","451111"],"item_3_alternative_title_1":{"attribute_name":"その他のタイトル","attribute_value_mlt":[{"subitem_alternative_title":"LE-7用高圧ポンプの性能評価"}]},"item_3_biblio_info_10":{"attribute_name":"書誌情報","attribute_value_mlt":[{"bibliographicIssueDates":{"bibliographicIssueDate":"1993-09","bibliographicIssueDateType":"Issued"},"bibliographicPageEnd":"8","bibliographicPageStart":"1","bibliographicVolumeNumber":"1212T","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の推進薬供給用液体酸素および液体水素ポンプは、大流量・高吐出圧である。これらのポンプの流体力学的な性能は熱力学的な評価がなされた。液体酸素ポンプの性能は、液体酸素があまり大きな圧縮性を示さないため、断熱揚程および断熱効率に基ずいて評価した。しかしながら、スプリットポンプから主ポンプ側への内部漏れがあるため、計測された温度、圧力より直接計算した効率にたいして、補正を施して真の効率を求めた。液体水素ポンプの性能評価にかんしては、液体水素が液体酸素よりもかなり大きな圧縮性を示すため、ポリトロープ効率ならびに揚程を採用した。計算結果と試験結果との比較により、断熱効率および揚程よりもポリトロープ効率および揚程の方がより真の価に近い事が確認された。両ポンプは、今日までに開発された他のロケット用大型ポンプと比較して、かなり高い効率を示した。","subitem_description_type":"Abstract"}]},"item_3_description_17":{"attribute_name":"抄録（英）","attribute_value_mlt":[{"subitem_description":"The LOX (Liquid OXygen) and LH2 (Liquid Hydrogen) pumps of the LE-7 rocket engine are characterized by high delivery pressure and a large flow rate. The hydrodynamic performance of these pumps was thermodynamically evaluated. The performance of the LOX pump was expressed by the adiabatic head and efficiency, because LOX is not particularly compressible. However, the efficiency directly determined using the measured pressures and temperatures was corrected to approximate the true efficiency because there was internal leakage from the split pump to the main pump. For evaluation of the LH2 pump performance, the polytropic head and efficiency were used, because LH2 shows much greater compressibility than LOX. Comparison of the calculalions and test results confirmed that they better approximated the true head and efficiency than the adiabatic head and efficiency. The efficiency of both pumps was fairly high compared with that of large rocket pumps which have been developed to date.","subitem_description_type":"Other"}]},"item_3_description_32":{"attribute_name":"資料番号","attribute_value_mlt":[{"subitem_description":"資料番号: AA0004227000","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-1212T","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 ロケット推進研究部"},{"subitem_text_value":"航空宇宙技術研究所 ロケット推進研究部"},{"subitem_text_value":"宇宙開発事業団"}]},"item_3_text_7":{"attribute_name":"著者所属（英）","attribute_value_mlt":[{"subitem_text_language":"en","subitem_text_value":"National Aerospace Laboratory Rocket Propulsion Research Division"},{"subitem_text_language":"en","subitem_text_value":"National Aerospace Laboratory Rocket Propulsion Research Division"},{"subitem_text_language":"en","subitem_text_value":"National Space Development Agency of Japan"}]},"item_creator":{"attribute_name":"著者","attribute_type":"creator","attribute_value_mlt":[{"creatorNames":[{"creatorName":"吉田, 誠"}],"nameIdentifiers":[{}]},{"creatorNames":[{"creatorName":"上條, 謙二郎"}],"nameIdentifiers":[{}]},{"creatorNames":[{"creatorName":"長尾, 隆治"}],"nameIdentifiers":[{}]},{"creatorNames":[{"creatorName":"Yoshida, Makoto","creatorNameLang":"en"}],"nameIdentifiers":[{}]},{"creatorNames":[{"creatorName":"Kamijo, Kenjiro","creatorNameLang":"en"}],"nameIdentifiers":[{}]},{"creatorNames":[{"creatorName":"Nagao, Takaharu","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":"naltr1212t.pdf","filesize":[{"value":"705.8 kB"}],"format":"application/pdf","licensetype":"license_note","mimetype":"application/pdf","url":{"label":"naltr1212t.pdf","url":"https://jaxa.repo.nii.ac.jp/record/41197/files/naltr1212t.pdf"},"version_id":"246821da-e970-4963-abdd-2429f20c0ac2"}]},"item_keyword":{"attribute_name":"キーワード","attribute_value_mlt":[{"subitem_subject":"ターボポンプ","subitem_subject_scheme":"Other"},{"subitem_subject":"液体ロケットエンジン","subitem_subject_scheme":"Other"},{"subitem_subject":"液体酸素","subitem_subject_scheme":"Other"},{"subitem_subject":"液体水素","subitem_subject_scheme":"Other"},{"subitem_subject":"性能分析","subitem_subject_scheme":"Other"},{"subitem_subject":"流量特性","subitem_subject_scheme":"Other"},{"subitem_subject":"断熱揚程","subitem_subject_scheme":"Other"},{"subitem_subject":"断熱効率","subitem_subject_scheme":"Other"},{"subitem_subject":"ポリトロープ揚程","subitem_subject_scheme":"Other"},{"subitem_subject":"ポリトロープ効率","subitem_subject_scheme":"Other"},{"subitem_subject":"性能計算","subitem_subject_scheme":"Other"},{"subitem_subject":"熱力学的性質","subitem_subject_scheme":"Other"},{"subitem_subject":"漏れ","subitem_subject_scheme":"Other"},{"subitem_subject":"スプリットポンプ","subitem_subject_scheme":"Other"},{"subitem_subject":"性能試験","subitem_subject_scheme":"Other"},{"subitem_subject":"turbo pump","subitem_subject_language":"en","subitem_subject_scheme":"Other"},{"subitem_subject":"liquid rocket engine","subitem_subject_language":"en","subitem_subject_scheme":"Other"},{"subitem_subject":"liquid oxygen","subitem_subject_language":"en","subitem_subject_scheme":"Other"},{"subitem_subject":"liquid hydrogen","subitem_subject_language":"en","subitem_subject_scheme":"Other"},{"subitem_subject":"performance analysis","subitem_subject_language":"en","subitem_subject_scheme":"Other"},{"subitem_subject":"flow characteristic","subitem_subject_language":"en","subitem_subject_scheme":"Other"},{"subitem_subject":"adiabatic head","subitem_subject_language":"en","subitem_subject_scheme":"Other"},{"subitem_subject":"adiabatic efficiency","subitem_subject_language":"en","subitem_subject_scheme":"Other"},{"subitem_subject":"polytropic head","subitem_subject_language":"en","subitem_subject_scheme":"Other"},{"subitem_subject":"polytropic efficiency","subitem_subject_language":"en","subitem_subject_scheme":"Other"},{"subitem_subject":"performanc calculation","subitem_subject_language":"en","subitem_subject_scheme":"Other"},{"subitem_subject":"thermodynamic property","subitem_subject_language":"en","subitem_subject_scheme":"Other"},{"subitem_subject":"leakage","subitem_subject_language":"en","subitem_subject_scheme":"Other"},{"subitem_subject":"split pump","subitem_subject_language":"en","subitem_subject_scheme":"Other"},{"subitem_subject":"performanc test","subitem_subject_language":"en","subitem_subject_scheme":"Other"}]},"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":"Performance evaluation of LE-7 high pressure pumps","item_titles":{"attribute_name":"タイトル","attribute_value_mlt":[{"subitem_title":"Performance evaluation of LE-7 high pressure pumps","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":"41197","relation_version_is_last":true,"title":["Performance evaluation of LE-7 high pressure pumps"],"weko_creator_id":"1","weko_shared_id":1},"updated":"2023-06-20T19:12:17.448803+00:00"}