@techreport{oai:jaxa.repo.nii.ac.jp:00044691,
 author = {高島, 一明 and 波木井, 潔 and 青木, 竹夫 and TAKASHIMA, Kazuaki and HAKII, Kiyoshi and AOKI, Takeo},
 month = {Jan},
 note = {There has been a world-wide need to build transonic ground test facilities with much higher Reynolds numbers for the past few years. The Ludwieg tube is a test facility which has the potential of realizing higher Reynolds numbers. In order to assess the utility of the Ludwieg tube, experimental studies using a small tube with a test section diameter of 100mm were made. The starting time of this tube wind tunnel was investigated and the spatial and timewise quality of the test section flow were analyzed. Although the timewise variation of the stagnation pressure in a quasi-steady state remained less than 3 percent, the timewise variation of the Mach number at the test section was observed to be as much as 10 percent in some test conditions. The effective duration for an aerodynamic experiment of this impulse type facility was carefully evaluated for several contraction rations of the Ludwieg tube. It was shown that the most effective operation in consideration of both duration and air consumption of a conventional Ludwieg tube is achieved when the flow Mach number in the charge tube is about 0.2. This analysis includes the estimation of the growth of boundary layer in the charge tube by Becker’s theory., 資料番号: NALTR0441000, レポート番号: NAL TR-441},
 title = {遷音速ルートビーク管の特性について},
 year = {1976}
}