{"created":"2023-06-20T15:08:34.968791+00:00","id":38068,"links":{},"metadata":{"_buckets":{"deposit":"a6dbabf7-e6c1-4b8b-b834-94132fff795d"},"_deposit":{"created_by":1,"id":"38068","owners":[1],"pid":{"revision_id":0,"type":"depid","value":"38068"},"status":"published"},"_oai":{"id":"oai:jaxa.repo.nii.ac.jp:00038068","sets":["1887:1891","1896:1898:1913:1915"]},"author_link":["431528","431525","431524","431529","431523","431522","431526","431527"],"item_5_alternative_title_1":{"attribute_name":"その他のタイトル","attribute_value_mlt":[{"subitem_alternative_title":"横方向噴出に対するヘリコプタ回転翼の計算によるブレード・渦相互作用の研究"}]},"item_5_biblio_info_10":{"attribute_name":"書誌情報","attribute_value_mlt":[{"bibliographicIssueDates":{"bibliographicIssueDate":"2002-01","bibliographicIssueDateType":"Issued"},"bibliographicPageEnd":"190","bibliographicPageStart":"185","bibliographicVolumeNumber":"53","bibliographic_titles":[{"bibliographic_title":"航空宇宙技術研究所特別資料: 航空宇宙数値シミュレーション技術シンポジウム2001論文集"},{"bibliographic_title":"Special Publication of National Aerospace Laboratory: Proceedings of Aerospace Numerical Simulation Symposium 2001","bibliographic_titleLang":"en"}]}]},"item_5_description_17":{"attribute_name":"抄録（英）","attribute_value_mlt":[{"subitem_description":"As a method to reduce Blade-Vortex Interaction (BVI) noise of helicopter rotor, the effects of lateral wing-tip blowing were analyzed for the generation and behavior of tip vortical flow. Three-dimensional compressible Euler/Navier-Stokes solver was used to calculate the effect of blowing air from blade tip on the tip vortex of fixed single blade at the various flow and jet conditions. The numerical results include the position of the vortex center along the vortical flow, the size and strength of the rolled tip vortex, and circulation and maximum tangential velocity of the tip vortex. Jet blowing from the wing-tip can diffuse the tip vortex in the way to make larger core sizes and less velocity gradients, which can be effective way to reduce BVI noise of rotary wing. The predictions of BVI noise were performed using a combined method of an unsteady Euler code with an aeroacounstic code based on Ffowcs-Williams and Hawkings formulation. A moving overlapped grid system with three types of grids (blade grid, inner and outer background grid) was used to simulate BVI of helicopter with two OLS-airfoil blades in forward/descending flight condition. The calculated waveform of BVI noise clearly shows the distinct peaks caused by the interaction between blade and tip vortex and the effect of lateral blowing at tip to reduce BVI noise.","subitem_description_type":"Other"}]},"item_5_description_32":{"attribute_name":"資料番号","attribute_value_mlt":[{"subitem_description":"資料番号: AA0032819032","subitem_description_type":"Other"}]},"item_5_description_33":{"attribute_name":"レポート番号","attribute_value_mlt":[{"subitem_description":"レポート番号: NAL SP-53","subitem_description_type":"Other"}]},"item_5_publisher_8":{"attribute_name":"出版者","attribute_value_mlt":[{"subitem_publisher":"航空宇宙技術研究所"}]},"item_5_publisher_9":{"attribute_name":"出版者（英）","attribute_value_mlt":[{"subitem_publisher":"National Aerospace Laboratory (NAL)"}]},"item_5_source_id_21":{"attribute_name":"ISSN","attribute_value_mlt":[{"subitem_source_identifier":"0289-260X","subitem_source_identifier_type":"ISSN"}]},"item_5_source_id_24":{"attribute_name":"書誌レコードID","attribute_value_mlt":[{"subitem_source_identifier":"AN10097345","subitem_source_identifier_type":"NCID"}]},"item_5_text_6":{"attribute_name":"著者所属","attribute_value_mlt":[{"subitem_text_value":"Pohang Univ. of Science and Technology"},{"subitem_text_value":"Pohang Univ. of Science and Technology"},{"subitem_text_value":"航空宇宙技術研究所"},{"subitem_text_value":"航空宇宙技術研究所"}]},"item_5_text_7":{"attribute_name":"著者所属（英）","attribute_value_mlt":[{"subitem_text_language":"en","subitem_text_value":"Pohang University of Science and Technology"},{"subitem_text_language":"en","subitem_text_value":"Pohang University of Science and Technology"},{"subitem_text_language":"en","subitem_text_value":"National Aerospace Laboratory"},{"subitem_text_language":"en","subitem_text_value":"National Aerospace Laboratory"}]},"item_creator":{"attribute_name":"著者","attribute_type":"creator","attribute_value_mlt":[{"creatorNames":[{"creatorName":"Yang, Choongmo"}],"nameIdentifiers":[{}]},{"creatorNames":[{"creatorName":"Baek, Jehyun"}],"nameIdentifiers":[{}]},{"creatorNames":[{"creatorName":"齊藤, 茂"}],"nameIdentifiers":[{}]},{"creatorNames":[{"creatorName":"青山, 剛史"}],"nameIdentifiers":[{}]},{"creatorNames":[{"creatorName":"Yang, Choongmo","creatorNameLang":"en"}],"nameIdentifiers":[{}]},{"creatorNames":[{"creatorName":"Baek, Jehyun","creatorNameLang":"en"}],"nameIdentifiers":[{}]},{"creatorNames":[{"creatorName":"Saito, Shigeru","creatorNameLang":"en"}],"nameIdentifiers":[{}]},{"creatorNames":[{"creatorName":"Aoyama, Takashi","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":"2020-01-24"}],"displaytype":"detail","filename":"nalsp0053031.pdf","filesize":[{"value":"3.5 MB"}],"format":"application/pdf","licensetype":"license_note","mimetype":"application/pdf","url":{"label":"nalsp0053031.pdf","url":"https://jaxa.repo.nii.ac.jp/record/38068/files/nalsp0053031.pdf"},"version_id":"1d5cc1e5-88a2-4c90-9277-a75a247e4616"}]},"item_keyword":{"attribute_name":"キーワード","attribute_value_mlt":[{"subitem_subject":"数値解析","subitem_subject_scheme":"Other"},{"subitem_subject":"翼・渦相互作用","subitem_subject_scheme":"Other"},{"subitem_subject":"回転翼","subitem_subject_scheme":"Other"},{"subitem_subject":"ヘリコプタ","subitem_subject_scheme":"Other"},{"subitem_subject":"圧縮性流体","subitem_subject_scheme":"Other"},{"subitem_subject":"速度分布","subitem_subject_scheme":"Other"},{"subitem_subject":"numerical analysis","subitem_subject_language":"en","subitem_subject_scheme":"Other"},{"subitem_subject":"blade vortex interaction","subitem_subject_language":"en","subitem_subject_scheme":"Other"},{"subitem_subject":"rotary wing","subitem_subject_language":"en","subitem_subject_scheme":"Other"},{"subitem_subject":"helicopter","subitem_subject_language":"en","subitem_subject_scheme":"Other"},{"subitem_subject":"compressible fluid","subitem_subject_language":"en","subitem_subject_scheme":"Other"},{"subitem_subject":"velocity distribution","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":"conference paper","resourceuri":"http://purl.org/coar/resource_type/c_5794"}]},"item_title":"Numerical study on the Blade-Vortex interaction of helicopter rotor with lateral blowing","item_titles":{"attribute_name":"タイトル","attribute_value_mlt":[{"subitem_title":"Numerical study on the Blade-Vortex interaction of helicopter rotor with lateral blowing","subitem_title_language":"en"}]},"item_type_id":"5","owner":"1","path":["1891","1915"],"pubdate":{"attribute_name":"公開日","attribute_value":"2015-03-26"},"publish_date":"2015-03-26","publish_status":"0","recid":"38068","relation_version_is_last":true,"title":["Numerical study on the Blade-Vortex interaction of helicopter rotor with lateral blowing"],"weko_creator_id":"1","weko_shared_id":-1},"updated":"2023-06-20T22:45:39.618509+00:00"}