並列タイトル等Flow Quality of NAL Two-Dimensional Transonic Wind Tunnel Part II Extensive and Systematic Pressure Fluctuations Study in the Settling Chamber, Test Section and Second Throat of the NAL 2-D Transonic Wind Tunnel
タイトル(掲載誌)航空宇宙技術研究所報告 = Technical Report of National Aerospace Laboratory TR-836
一般注記To obtain a better understanding of the characteristic of the facility disturbances and identification of their sources, detailed pressure fluctuation measurements were made in the settling chamber, the test section and the second throat of the NAL two-dimensional transonic wind tunnel. In order to identify the test section wall slot effects, the following measurements were made ; keeping the side wall slot (for wake survey probe trav..) open measurements were mede with the transonic slots (top and bottom walls) both open and closed ; then, conversely, keeping the transonic slots open measurements were made with the side wall slot open and closed. The pressure fluctuations of the flow at these locations in the wind tunnel were measured by means of wall or sting-mounted ultra miniature pressure sensors. The data, which represented a frequency range from about 15 Hz to 25 kHz, have been analyzed in the form of broadband sound pressure levels, root-mean-square fluctuations of pressure coefficient and spectra of pressure fluctuations. There is a brief discussion of each item. R.m.s.and spectra of pressure fluctuations at the test section, which were compared with other wind tunnels, have been considered moderate in the transonic regime (0.7 < M < 0.9).
資料番号: NALTR0836000
レポート番号: NAL TR-836
一次資料へのリンクURLhttps://jaxa.repo.nii.ac.jp/?action=repository_action_common_download&item_id=45094&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