{"created":"2023-06-20T14:36:02.561124+00:00","id":2340,"links":{},"metadata":{"_buckets":{"deposit":"212eb3f9-e7bf-4887-8f9d-db25702e8c9b"},"_deposit":{"created_by":1,"id":"2340","owners":[1],"pid":{"revision_id":0,"type":"depid","value":"2340"},"status":"published"},"_oai":{"id":"oai:jaxa.repo.nii.ac.jp:00002340","sets":["1887:1893","9:10:309:328"]},"author_link":["5479","5483","5481","5478","5482","5480"],"item_3_alternative_title_2":{"attribute_name":"その他のタイトル（英）","attribute_value_mlt":[{"subitem_alternative_title":"Flight experiments for ground noise measurement using MuPAL-alpha research airplane"}]},"item_3_biblio_info_10":{"attribute_name":"書誌情報","attribute_value_mlt":[{"bibliographicIssueDates":{"bibliographicIssueDate":"2006-03-31","bibliographicIssueDateType":"Issued"},"bibliographicVolumeNumber":"JAXA-RR-04-038","bibliographic_titles":[{"bibliographic_title":"宇宙航空研究開発機構研究開発報告"},{"bibliographic_title":"JAXA Research and Development Report","bibliographic_titleLang":"en"}]}]},"item_3_description_16":{"attribute_name":"抄録","attribute_value_mlt":[{"subitem_description":"宇宙航空研究開発機構(JAXA)が所有する実験用航空機MuPAL-αを用いて地上騒音計測のための飛行実験を実施した。JAXAでは3次元的な曲線経路を用いた騒音低減のための飛行方式の研究を進めており、そのためには地上の騒音被害を精度良く予測する騒音モデルが必要となる。本稿で述べる飛行実験では,騒音モデルの開発および検証に資するデータの取得を目的として、水平・上昇・降下・旋回飛行を実施し、地上にマイクを設置して騒音を計測した。得られたデータからA特性騒音レベルを求め、飛行速度、エンジン・トルクによる比較を行った。また、時々刻々変化する機体とマイクの距離から、伝播の影響を取り除くことによって、一定距離における機体からの方向と騒音レベルの関係を求め、音源の特性を推定した。","subitem_description_type":"Abstract"}]},"item_3_description_17":{"attribute_name":"抄録（英）","attribute_value_mlt":[{"subitem_description":"Acoustic flight tests with the MuPAL-alpha Research Airplane have been conducted by Japan Aerospace Exploration Agency (JAXA). JAXA has been carrying out a research program aimed at developing noise abatement flight procedures using three-dimensional flight paths. As part of the effort to predict noise impact on the ground precisely, straight flight patterns including level, climbing, and descending flights were flown to obtain basic noise data for the development and verification of noise models. Turning flights were also flown to acquire noise data that will be necessary in designing three-dimensional curved flight paths that minimize noise impact on the ground. Variations of A-weighted noise levels due to changes in airspeed and engine torque were examined in this study. Moreover, directivity patterns, displayed as noise levels at a constant distance from the airplane, were estimated by calculating the direction of noise emission and the influence of airplane position and attitude.","subitem_description_type":"Other"}]},"item_3_description_32":{"attribute_name":"資料番号","attribute_value_mlt":[{"subitem_description":"資料番号: AA0049187000","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-RR-04-038","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":"1349-1113","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":"AA1192675X","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 総合技術研究本部"},{"subitem_text_value":"宇宙航空研究開発機構 総合技術研究本部"},{"subitem_text_value":"宇宙航空研究開発機構 総合技術研究本部"}]},"item_3_text_7":{"attribute_name":"著者所属（英）","attribute_value_mlt":[{"subitem_text_language":"en","subitem_text_value":"Japan Aerospace Exploration Agency Institute of Space Technology and Aeronautics"},{"subitem_text_language":"en","subitem_text_value":"Japan Aerospace Exploration Agency Institute of Space Technology and Aeronautics"},{"subitem_text_language":"en","subitem_text_value":"Japan Aerospace Exploration Agency Institute of Space Technology and Aeronautics"}]},"item_creator":{"attribute_name":"著者","attribute_type":"creator","attribute_value_mlt":[{"creatorNames":[{"creatorName":"石井, 寛一"}],"nameIdentifiers":[{}]},{"creatorNames":[{"creatorName":"五味, 広美"}],"nameIdentifiers":[{}]},{"creatorNames":[{"creatorName":"奥野, 善則"}],"nameIdentifiers":[{}]},{"creatorNames":[{"creatorName":"Ishii, Hirokazu","creatorNameLang":"en"}],"nameIdentifiers":[{}]},{"creatorNames":[{"creatorName":"Gomi, Hiromi","creatorNameLang":"en"}],"nameIdentifiers":[{}]},{"creatorNames":[{"creatorName":"Okuno, Yoshinori","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":"49187000.pdf","filesize":[{"value":"9.3 MB"}],"format":"application/pdf","licensetype":"license_note","mimetype":"application/pdf","url":{"label":"49187000.pdf","url":"https://jaxa.repo.nii.ac.jp/record/2340/files/49187000.pdf"},"version_id":"5d6b4124-8d56-45ba-a5a8-fd4ebe926cf1"}]},"item_keyword":{"attribute_name":"キーワード","attribute_value_mlt":[{"subitem_subject":"騒音測定","subitem_subject_scheme":"Other"},{"subitem_subject":"飛行実験","subitem_subject_scheme":"Other"},{"subitem_subject":"飛行パターン","subitem_subject_scheme":"Other"},{"subitem_subject":"水平飛行","subitem_subject_scheme":"Other"},{"subitem_subject":"下降","subitem_subject_scheme":"Other"},{"subitem_subject":"上昇","subitem_subject_scheme":"Other"},{"subitem_subject":"旋回飛行","subitem_subject_scheme":"Other"},{"subitem_subject":"日本製航空機","subitem_subject_scheme":"Other"},{"subitem_subject":"指向性","subitem_subject_scheme":"Other"},{"subitem_subject":"音圧","subitem_subject_scheme":"Other"},{"subitem_subject":"A特性騒音レベル","subitem_subject_scheme":"Other"},{"subitem_subject":"トンネル型誘導表示","subitem_subject_scheme":"Other"},{"subitem_subject":"noise measurement","subitem_subject_language":"en","subitem_subject_scheme":"Other"},{"subitem_subject":"flight experiment","subitem_subject_language":"en","subitem_subject_scheme":"Other"},{"subitem_subject":"flight pattern","subitem_subject_language":"en","subitem_subject_scheme":"Other"},{"subitem_subject":"horizontal flight","subitem_subject_language":"en","subitem_subject_scheme":"Other"},{"subitem_subject":"descent","subitem_subject_language":"en","subitem_subject_scheme":"Other"},{"subitem_subject":"ascent","subitem_subject_language":"en","subitem_subject_scheme":"Other"},{"subitem_subject":"turning flight","subitem_subject_language":"en","subitem_subject_scheme":"Other"},{"subitem_subject":"Nihon aircraft","subitem_subject_language":"en","subitem_subject_scheme":"Other"},{"subitem_subject":"directivity","subitem_subject_language":"en","subitem_subject_scheme":"Other"},{"subitem_subject":"sound pressure","subitem_subject_language":"en","subitem_subject_scheme":"Other"},{"subitem_subject":"A-weighted noise level","subitem_subject_language":"en","subitem_subject_scheme":"Other"},{"subitem_subject":"tunnel-in-the-sky display","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":"実験用航空機MuPAL-αによる地上騒音計測飛行実験","item_titles":{"attribute_name":"タイトル","attribute_value_mlt":[{"subitem_title":"実験用航空機MuPAL-αによる地上騒音計測飛行実験"}]},"item_type_id":"3","owner":"1","path":["328","1893"],"pubdate":{"attribute_name":"公開日","attribute_value":"2015-03-26"},"publish_date":"2015-03-26","publish_status":"0","recid":"2340","relation_version_is_last":true,"title":["実験用航空機MuPAL-αによる地上騒音計測飛行実験"],"weko_creator_id":"1","weko_shared_id":-1},"updated":"2023-06-21T09:24:16.097931+00:00"}