@inproceedings{oai:jaxa.repo.nii.ac.jp:00005431, author = {川口, 大輔 and 山内, 一樹 and 舟木, 治郎 and 平田, 勝哉 and Kawaguchi, Daisuke and Yamauchi, Kazuki and Funaki, Jiro and Hirata, Katsuya}, book = {宇宙航空研究開発機構特別資料: 第40回流体力学講演会/航空宇宙数値シミュレーション技術シンポジウム2008論文集, JAXA Special Publication: Proceedings fo 40th Fluid Dynamics Conference / Aerospace Numerical Simulation Symposium 2008}, month = {Feb}, note = {第40回流体力学講演会/航空宇宙数値シミュレーション技術シンポジウム2008. 会期: 2008年6月12日-6月13日. 会場: 東北大学片平キャンパス, In this study, we deal with the tumbling, which is a rotating motion with the axis perpendicular to the falling direction. Our purpose is to reveal the fundamental aerodynamic characteristics of the tumbling, experimentally. As the test plate, we consider a prism with a rectangular cross section with a depth-to-width ratio lambda of 0.3. As a result, the reduced terminal rotating rate omega(sup *), the lift coefficient C(sub L), the drag coefficient C(sub D) and the lift-to-drag ratio C(sub L)/C(sub D) are independent of the aspect ratio AR, when AR is greater than 10. As the inertia moment ratio I(sup *) increases from zero to 50, omega(sup *), C(sub L) and C(sub D) increase. However, omega(sup *), C(sub L) and C(sub D) become almost constant, if I(sup *) is greater than 50. We propose the empirical formulae to predict them., 形態: カラー図版あり, 資料番号: AA0064303029, レポート番号: JAXA-SP-08-009}, publisher = {宇宙航空研究開発機構, Japan Aerospace Exploration Agency (JAXA)}, title = {タンブリング平板の自由落下実験}, volume = {JAXA-SP-08-009}, year = {2009} }