{"created":"2024-02-09T06:15:03.887569+00:00","id":2000249,"links":{},"metadata":{"_buckets":{"deposit":"84903c35-51da-4227-8049-7e1c8103808b"},"_deposit":{"created_by":27,"id":"2000249","owner":"27","owners":[27],"pid":{"revision_id":0,"type":"depid","value":"2000249"},"status":"published"},"_oai":{"id":"oai:jaxa.repo.nii.ac.jp:02000249","sets":["1398:1408:1706930339778","1887:1893","9:10:1695275225494:1706929864767"]},"author_link":[],"item_1692929429513":{"attribute_name":"抄録","attribute_value_mlt":[{"subitem_description":"遠方天体からのサンプルリターンプロジェクトに対して，薄殻エアロシェルを有する新型の大気突入カプセルが提案されている．軽量かつ大型のエアロシェルにより高高度から空力減速することで帰還時の空力加熱を低減でき，着地時にパラシュートを使用せず運用することが考えられている．そのため大気突入時の全速度域に対してカプセルが安定して飛行することが求められる．空力不安定現象の解明に向けて機体の設計パラメータが空力挙動に与える影響を評価するため，2023年7月8，9日にゴム気球を用いた自由飛行実験（Rubber balloon Experiment for Reentry capsule with thin Aeroshell）を大樹航空宇宙実験場にて実施した．本実験では先行研究によって提案されている機体（以下，再突入機とする）と同じ直径0.8 mのカプセルを2機作成した（RERA-2，RERA-3）．同様のコンセプトで2022年に設計されたRERA-1では機体の大きな振動は見られなかった．そこで本実験では慣性モーメントを増加させ重心位置をカプセル後方に設定した．機体には9軸センサ，温度センサ，圧力センサ，カメラが搭載されており，計測データは地上局で受信した．RERA-2は高度25 km，RERA-3は高度16 kmにてゴム気球から切り離され，数十分間の自由飛行ののち海上に着水した．自由飛行時の条件はマッハ数0.2以下，レイノルズ数10(exp 5)のオーダーであり，再突入時の飛行環境と同程度であった．本実験で計測されたデータにより，自由飛行中にカプセルは振動していたものの，ピッチ方向に縦回転するような不安定化現象は確認されなかった．そのため，RERA-1と同じくRERA-2，RERA-3の設計では低速領域において安定的に飛行することが明らかになった．また，重心位置を後方に変更したRERA-2ではより大きな角速度の振幅が得られた．新たに搭載した差圧センサによって機体の対気姿勢を推定するために有効なデータを取得できた．","subitem_description_language":"ja","subitem_description_type":"Other"},{"subitem_description":"A novel atmospheric entry capsule with a thin aeroshell has been proposed for a deep space sample return mission. The lightweight and large aeroshell allows for efficient aerodynamic deceleration during entry at a higher altitude, leading to a decrease in aerodynamic heating. The capsule is designed to operate without the use of parachutes. Therefore, the capsule needs to remain stable in attitude during atmospheric entry across the entire velocity range. To access the aerodynamic stability of this capsule in low-speed condition, a free-flight experiment RERA (Rubber balloon Experiment for Reentry capsule with thin Aeroshell) was conducted on July 8th and 9th, 2023, at the Taiki Aerospace Research Field. Two capsules, each with a diameter of 0.8 m, were developed for this experiment, named RERA-2 and RERA-3, respectively. RERA-1 conducted in 2022, designed with a similar concept, did not show significant oscillation in attitude. In the current experiments, a parameter study for reproducing instability was conducted by increasing the moment of inertia and shifting the center of gravity reward to investigate their effects on the capsule motion. The capsules were equipped with a 9-axis sensor, temperature sensor, pressure gauges, and cameras. Measurement data were transmitted to the ground station. RERA-2 was released from the balloon at an altitude of 25km, and RERA-3 at an altitude of 16 km. After several ten minutes of free flight, both capsules splashed down in the ocean. The flow conditions during free flight were in the order of Mach 0.2 or lower and Reynolds numbers of 10(exp 5), similar to those encountered during reentry. While the capsules exhibited oscillation during free flight, no attitude instability involving pitch-direction longitudinal rotation was observed. Therefore, it was indicated that RERA-2 and RERA-3, like RERA-1, can fly stably in the low-speed regime. RERA-2, in which the center of gravity was positioned rearward exhibited larger angular velocity amplitudes.","subitem_description_language":"en","subitem_description_type":"Other"}]},"item_1692929640552":{"attribute_name":"内容記述","attribute_value_mlt":[{"subitem_description":"形態: カラー図版あり","subitem_description_language":"ja","subitem_description_type":"Other"},{"subitem_description":"Physical  characteristics: Original contains color illustrations","subitem_description_language":"en","subitem_description_type":"Other"}]},"item_1693474141533":{"attribute_name":"資料番号(Local)","attribute_value_mlt":[{"subitem_relation_type_id":{"subitem_relation_type_id_text":"資料番号: AA2330019004","subitem_relation_type_select":"Local"}}]},"item_1694684272217":{"attribute_name":"日付","attribute_value_mlt":[{"subitem_date_issued_datetime":"2023-11-28","subitem_date_issued_type":"Submitted"}]},"item_1695282775758":{"attribute_name":"著者所属","attribute_value_mlt":[{"subitem_text_language":"ja","subitem_text_value":"北海道大学"},{"subitem_text_language":"ja","subitem_text_value":"北海道大学"},{"subitem_text_language":"ja","subitem_text_value":"東京大学"},{"subitem_text_language":"ja","subitem_text_value":"東京農工大学"},{"subitem_text_language":"ja","subitem_text_value":"北海道大学"},{"subitem_text_language":"ja","subitem_text_value":"北海道大学"},{"subitem_text_language":"ja","subitem_text_value":"東京理科大学"},{"subitem_text_language":"ja","subitem_text_value":"宇宙航空研究開発機構宇宙科学研究所 (JAXA)(ISAS)"},{"subitem_text_language":"ja","subitem_text_value":"北海道大学"},{"subitem_text_language":"ja","subitem_text_value":"宇宙航空研究開発機構宇宙科学研究所 (JAXA)(ISAS)"},{"subitem_text_language":"ja","subitem_text_value":"宇宙航空研究開発機構宇宙科学研究所 (JAXA)(ISAS)"},{"subitem_text_language":"ja","subitem_text_value":"Hokkaido University"},{"subitem_text_language":"en","subitem_text_value":"Hokkaido University"},{"subitem_text_language":"en","subitem_text_value":"The University of Tokyo"},{"subitem_text_language":"en","subitem_text_value":"Tokyo University of Agriculture and Technology"},{"subitem_text_language":"en","subitem_text_value":"Hokkaido University"},{"subitem_text_language":"en","subitem_text_value":"Hokkaido University"},{"subitem_text_language":"en","subitem_text_value":"Tokyo University of Science"},{"subitem_text_language":"en","subitem_text_value":"Institute of Space and Astronautical Science, Japan Aerospace Exploration Agency (JAXA)(ISAS)"},{"subitem_text_language":"en","subitem_text_value":"Hokkaido University"},{"subitem_text_language":"en","subitem_text_value":"Institute of Space and Astronautical Science, Japan Aerospace Exploration Agency (JAXA)(ISAS)"},{"subitem_text_language":"en","subitem_text_value":"Institute of Space and Astronautical Science, Japan Aerospace Exploration Agency (JAXA)(ISAS)"}]},"item_3_biblio_info_10":{"attribute_name":"書誌情報","attribute_value_mlt":[{"bibliographicIssueDates":{"bibliographicIssueDate":"2024-02-13","bibliographicIssueDateType":"Issued"},"bibliographicPageEnd":"75","bibliographicPageStart":"59","bibliographicVolumeNumber":"JAXA-RR-23-003","bibliographic_titles":[{"bibliographic_title":"宇宙航空研究開発機構研究開発報告: 大気球研究報告","bibliographic_titleLang":"ja"},{"bibliographic_title":"JAXA Research and Development Report","bibliographic_titleLang":"en"}]}]},"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-23-003","subitem_description_language":"ja","subitem_description_type":"Other"}]},"item_3_identifier_registration":{"attribute_name":"ID登録","attribute_value_mlt":[{"subitem_identifier_reg_text":"10.20637/0002000249","subitem_identifier_reg_type":"JaLC"}]},"item_3_publisher_8":{"attribute_name":"出版者","attribute_value_mlt":[{"subitem_publisher":"宇宙航空研究開発機構 (JAXA)","subitem_publisher_language":"ja"},{"subitem_publisher":"Japan Aerospace Exploration Agency (JAXA)","subitem_publisher_language":"en"}]},"item_3_source_id_22":{"attribute_name":"ISSN ONLINE","attribute_value_mlt":[{"subitem_source_identifier":"2433-2216","subitem_source_identifier_type":"EISSN"}]},"item_3_version_type_30":{"attribute_name":"著者版フラグ","attribute_value_mlt":[{"subitem_version_resource":"http://purl.org/coar/version/c_970fb48d4fbd8a85","subitem_version_type":"VoR"}]},"item_access_right":{"attribute_name":"アクセス権","attribute_value_mlt":[{"subitem_access_right":"open 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亮多","creatorNameLang":"ja"},{"creatorName":"TAMAI, Ryota","creatorNameLang":"en"}]},{"creatorAffiliations":[{"affiliationNames":[{"affiliationName":"東京農工大学","affiliationNameLang":"ja"},{"affiliationName":"Tokyo University of Agriculture and Technology","affiliationNameLang":"en"}]}],"creatorNames":[{"creatorName":"平田, 耕志郎","creatorNameLang":"ja"},{"creatorName":"HIRATA, Koshiro","creatorNameLang":"en"}]},{"creatorAffiliations":[{"affiliationNames":[{"affiliationName":"北海道大学","affiliationNameLang":"ja"},{"affiliationName":"Hokkaido University","affiliationNameLang":"en"}]}],"creatorNames":[{"creatorName":"若林, 海人","creatorNameLang":"ja"},{"creatorName":"WAKABAYASHI, Kaito","creatorNameLang":"en"}]},{"creatorAffiliations":[{"affiliationNames":[{"affiliationName":"北海道大学","affiliationNameLang":"ja"},{"affiliationName":"Hokkaido University","affiliationNameLang":"en"}]}],"creatorNames":[{"creatorName":"吉雄, 忠行","creatorNameLang":"ja"},{"creatorName":"YOSHIO, Tadayuki","creatorNameLang":"en"}]},{"creatorAffiliations":[{"affiliationNames":[{"affiliationName":"東京理科大学","affiliationNameLang":"ja"},{"affiliationName":"Tokyo University of Science","affiliationNameLang":"en"}]}],"creatorNames":[{"creatorName":"山本, 春佳","creatorNameLang":"ja"},{"creatorName":"YAMAMOTO, Haruka","creatorNameLang":"en"}]},{"creatorAffiliations":[{"affiliationNames":[{"affiliationName":"宇宙航空研究開発機構 (JAXA)","affiliationNameLang":"ja"},{"affiliationName":"Japan Aerospace Exploration Agency (JAXA)","affiliationNameLang":"en"}]}],"creatorNames":[{"creatorName":"丹野, 茉莉枝","creatorNameLang":"ja"},{"creatorName":"TANNO, Marie","creatorNameLang":"en"}]},{"creatorAffiliations":[{"affiliationNames":[{"affiliationName":"北海道大学","affiliationNameLang":"ja"},{"affiliationName":"Hokkaido University","affiliationNameLang":"en"}]}],"creatorNames":[{"creatorName":"高橋, 裕介","creatorNameLang":"ja"},{"creatorName":"TAKAHASHI, Yusuke","creatorNameLang":"en"}]},{"creatorAffiliations":[{"affiliationNames":[{"affiliationName":"宇宙航空研究開発機構 (JAXA)","affiliationNameLang":"ja"},{"affiliationName":"Japan Aerospace Exploration Agency (JAXA)","affiliationNameLang":"en"}]}],"creatorNames":[{"creatorName":"永田, 靖典","creatorNameLang":"ja"},{"creatorName":"NAGATA, Yasunori","creatorNameLang":"en"}]},{"creatorAffiliations":[{"affiliationNames":[{"affiliationName":"宇宙航空研究開発機構 (JAXA)","affiliationNameLang":"ja"},{"affiliationName":"Japan Aerospace Exploration Agency (JAXA)","affiliationNameLang":"en"}]}],"creatorNames":[{"creatorName":"山田, 和彦","creatorNameLang":"ja"},{"creatorName":"YAMADA, Kazuhiko","creatorNameLang":"en"}]}]},"item_files":{"attribute_name":"ファイル情報","attribute_type":"file","attribute_value_mlt":[{"accessrole":"open_date","date":[{"dateType":"Available","dateValue":"2024-02-13"}],"filename":"AA2330019004.pdf","format":"application/pdf","mimetype":"application/pdf","url":{"url":"https://jaxa.repo.nii.ac.jp/record/2000249/files/AA2330019004.pdf"},"version_id":"8c6486f2-da1f-42d2-9937-8a57cfb9b7d9"}]},"item_keyword":{"attribute_name":"キーワード","attribute_value_mlt":[{"subitem_subject":"Dynamic stability","subitem_subject_language":"en","subitem_subject_scheme":"Other"},{"subitem_subject":"Sample return capsule","subitem_subject_language":"en","subitem_subject_scheme":"Other"},{"subitem_subject":"Balloon experiment","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":"ゴム気球による薄殻型深宇宙サンプルリターンカプセルの自由飛行実験: RERA-2 & RERA-3","item_titles":{"attribute_name":"タイトル","attribute_value_mlt":[{"subitem_title":"ゴム気球による薄殻型深宇宙サンプルリターンカプセルの自由飛行実験: RERA-2 & RERA-3","subitem_title_language":"ja"},{"subitem_title":"Free flight demonstrations for sample return capsules with thin aeroshell using rubber balloons: RERA-2 & RERA-3","subitem_title_language":"en"}]},"item_type_id":"40003","owner":"27","path":["1893","1706930339778","1706929864767"],"pubdate":{"attribute_name":"PubDate","attribute_value":"2024-02-13"},"publish_date":"2024-02-13","publish_status":"0","recid":"2000249","relation_version_is_last":true,"title":["ゴム気球による薄殻型深宇宙サンプルリターンカプセルの自由飛行実験: RERA-2 & RERA-3"],"weko_creator_id":"27","weko_shared_id":-1},"updated":"2024-02-26T07:04:18.316234+00:00"}