@inproceedings{oai:jaxa.repo.nii.ac.jp:00007793, author = {山田, 哲哉 and 平木, 講儒 and 井筒, 直樹 and 本田, 雅久 and Yamada, Tetsuya and Hiraki, Koju and Izutsu, Naoki and Honda, Masahisa}, book = {平成14年度アストロダイナミクスシンポジウム:講演後刷り集, ISAS Proceedings of 12th Workshop on Astrodynamics and Flight Mechanics 2002: A Collection of Technical Papers}, month = {Feb}, note = {金星の高度45km近傍に水蒸気気球を浮遊させ、大気観測を行なうミッションを想定し、惑星間遷移軌道から金星突入を行い、観測気球を所定の高度に放出する小型金星カプセルの研究を行なっている。直径50cm、全長20mに及ぶ長大な気球の落下速度要求、伸張終了時点での過度の伸展張力を与えぬなどの要求により、緩降下パラシュートおよび搭載機器側の空力係数間に一定の関係をもたせた気球の放出シナリオが特徴的な検討課題である。本稿では、カプセルの金星突入から気球を安全に放出・伸張させる点に焦点を絞り検討した結果を報告する。, A balloon observation of the Venusian atmosphere by a water-vapor super-pressure balloon is investigated in the initial planning of the solar sail mission working group formed in ISAS. In order to transport the balloon at the appropriate altitude, a small capsule and its direct entry to the Venusian atmosphere has been proposed here. The high-speed entry to the Venusian atmosphere at about 11.5 km/s exerts severe aerodynamic heating on the capsule. The release of the balloon with 50 cm in diameter by 20 m long requires lots on the release scenario and the aerodynamic mechanisms. The entry flight and the release of the long balloon at the altitude of 45 km is focused on and described in this paper., 資料番号: AA0045497031}, pages = {185--190}, publisher = {宇宙科学研究所, The Institute of Space and Astronautical Science (ISAS)}, title = {Venus entry capsule: From entry to balloon release}, year = {2003} }