皮膜に網をかぶせた長時間飛翔用スーパープレッシャー気球NPB2-3の飛翔性能試験(B20-03 実験)

• Material Type: 規格・テクニカルリポート類
• Title: 皮膜に網をかぶせた長時間飛翔用スーパープレッシャー気球NPB2-3の飛翔性能試験(B20-03 実験)
• Author/Editor: 斎藤, 芳隆; 山田, 和彦; 秋田, 大輔; 中篠, 恭一; 松尾, 卓摩; 山田, 昇; 松嶋, 清穂; SAITO, Yoshitaka; YAMADA, Kazuhiko; AKITA, Daisuke; NAKASHINO, Kyoichi; MATSUO, Takuma; YAMADA, Noboru; MATSUSHIMA, Kiyoho
• Author Heading: SAITO, Yoshitaka; YAMADA, Kazuhiko; AKITA, Daisuke; NAKASHINO, Kyoichi; MATSUO, Takuma; YAMADA, Noboru; MATSUSHIMA, Kiyoho
• Publication, Distribution, etc.: 宇宙航空研究開発機構(JAXA)
• Publication Date: 2022-02-18
• Publication Date (W3CDTF): 2022
• Alternative Title: Flight test of a super-pressure balloon NPB2-3 with a net for long duration balloon flight (B20-03 experiment)
• Periodical title: 宇宙航空研究開発機構研究開発報告: 大気球研究報告
• No. or year of volume/issue: JAXA-RR-21-003
• Volume: JAXA-RR-21-003
• Pages: 1-34
• ISSN (Periodical Title): EISSN : 2433-2216
• Subject Heading: 科学観測用気球; スーパープレッシャー気球; 膜構造物; Scientific Balloon; Super-pressure Balloon; Membrane Structure
• Target Audience: 一般
• Note (General): 出版タイプ： VoR; A flight test of a super-pressure balloon with a volume of 2,000 m3 covered by a net was conducted as a B20-03 experiment. This was the first time that this type of super-pressure balloon flew without being suspended from another balloon. The balloon was launched using the semi-dynamic launching method as usual, however, the ascending speed of the balloon was lower than expected immediately after the launching and was slowing down. Ballast were dropped to maintain the ascending speed of 5 m/s. After the balloon reached the safe area, the tear mechanism was functioned to break the balloon. The problem of the low ascending speed was investigated by analyzing the obtained data and recovered balloon. It was confirmed that the gas was leaked from the analysis of the balloon images obtained by the on-board camera, and was confirmed that the leak started after the spooler release from the constant upward tension of the spooler measured by the load cell just before the spooler release and the slow initial ascending speed of the balloon compared with the theoretical estimation. The examination of the recovered balloon revealed that the balloon was damaged by hundreds of unique slit holes with creep bands around the edges. After investigating the conditions for making similar holes, it is probable that it was caused by impact destruction that the net hit the balloon envelope with a speed of 10 m/s or more at the time of spooler release. To solve this problem, two possible solutions are being researched: using a multilayer film for the balloon enveloped to avoid leaks even damaged and developing a new launching method without moving balloons quickly.; 形態: カラー図版あり; Physical characteristics: Original contains color illustrations; 資料番号: AA2130029001; レポート番号: JAXA-RR-21-003
• DOI: 10.20637/00048393; https://doi.org/10.20637/00048393
• Access Restrictions: インターネット公開
• Data Provider (Database): 国立情報学研究所 : 学術機関リポジトリデータベース（IRDB）（機関リポジトリ）; https://irdb.nii.ac.jp
• Original Data Provider (Database): 宇宙航空研究開発機構 : 宇宙航空研究開発機構リポジトリ

• Summary, etc.: 体積2,000 m3 の皮膜に網をかぶせたスーパープレッシャー気球の飛翔試験をB20-03実験とし実施した。皮膜に網をかぶせたスーパープレッシャー気球を気球に牽引されることなく飛翔させたのは初めてである。気球は通常どおり、セミダイナミック放球法で放球されたが、気球は放球直後から所期の上昇速度が得られ...