並列タイトル等Refind Developments in a Damping Meter for Aerodynamic Derivatives
タイトル(掲載誌)航空宇宙技術研究所資料 = Technical Memorandum of National Aerospace Laboratory
一般注記Refined developments in a damping meter for measuring aerodynamic derivatives by a free oscillation technique are described. The apparatus directly measures the logarithmic decrement and frequency in digital form, resulting in an increased efficiency of experimentation and improved experimental accuracy. A special phase difference network in the apparatus is analyzed with the signal of the decaying oscillation, and the expected systematic error factors are estimated. Our results show that the error in frequency can be kept within 0. 5%, and the error in small logarithmic decrement can easily be reduced to 2% by repeating the measurements. Further practical applications using the damping meter are shown.
資料番号: NALTM0168000
レポート番号: NAL TM-168
一次資料へのリンクURLhttps://jaxa.repo.nii.ac.jp/?action=repository_action_common_download&item_id=43752&item_no=1&attribute_id=31&file_no=1
連携機関・データベース国立情報学研究所 : 学術機関リポジトリデータベース(IRDB)(機関リポジトリ)
提供元機関・データベース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