2026-03-13T02:02:51Z https://jaxa.repo.nii.ac.jp/oai

oai:jaxa.repo.nii.ac.jp:00044024 2023-06-20T22:03:55Z 1887:1893 1896:1898:1913:1916

壁圧を利用した揚力干渉修正法の有効性についての実験的検討 An Experimental Study on the Applicability of the Lift Interference Correction Method Using Wall Pressure Measurements 沢田, 秀夫 藤田, 敏美 中村, 正剛 小松, 行夫 SAWADA, Hideo FUJITA, Toshimi NAKAMURA, Seigo KAMATSU, Yukio Static pressure distributions on the upper and lower walls of the NAL 2m×2m transonic wind tunnel test section and on an airfoil model in it were measured at 0,6 and 20％ open area ratios of the walls.One of the experiments was carried out at only 20％ open area ratio in 1978 and another one was made at 0 and 6％ in 1980 and the other one was also made at 6 and 20％ in 1981.The pressure distributions measured during the experiment in 1978 were almost equal to those in 1981 at 20％ open area ratio of the walls but those at 6％ in 1980 and 1981 were different.The aerodynamic characteristics of the upper and lower perforated walls changed with the change in open area ratio but the manner of change differed.The differences among the slopes of lift coefficient curves corresponding to various open area ratios still remained after they were corrected with the correction method using wall pressure measurements.More accurate experiments on the aerodynamic characteristics of the tunnel walls are needed to clarifyancies. 資料番号: NALTM0441000 レポート番号: NAL TM-441 航空宇宙技術研究所 National Aerospace Laboratory(NAL) 1981-08 jpn technical report https://jaxa.repo.nii.ac.jp/records/44024 0452-2982 AN00314334 航空宇宙技術研究所資料 Technical Memorandum of National Aerospace Laboratory 441 17 https://jaxa.repo.nii.ac.jp/record/44024/files/naltm00441.pdf application/pdf 880.8 kB 2020-01-28