@techreport{oai:jaxa.repo.nii.ac.jp:00044621,
 author = {市川, 輝雄 and ICHIKAWA, Teruo},
 month = {Jun},
 note = {An approximate theory is developed for analysing downwashes behind oscillating two dimensional cascades having an infinite number of blades. The calculation procedure is greatly simplified by concentrating bound vortices on the blades other than the reference blade to their quarter chord points and also by assuming that the downwash on the reference blade induced by these concentrated vortices can be represented by its value at the three quarter chord point. It is disclosed that, both in the circulation and the downwash, limiting values when the frequency tends to zero are not equal to steady values and that the downwash becomes substantially a traveling wave of constant amplitude only after a short distance frome the cascade. Circulations and downwashes are calculated for various reduced frequencies and blade spacings. The results show that, both in circulations and downwashes, variations in the real parts against the reduced frequency are small and those in the imaginary parts are approximately linear. Effects of the blade spacing are large in the circulation but are small in the downwash. A ratio of the downwash on a center plane of two adjacent blades to that on a blade plane becomes unity when the frequency or the spacing tends to zero, and decreases when a product of the reduced frequency and the spacing increases., 資料番号: NALTR0373000, レポート番号: NAL TR-373},
 title = {振動する翼列の吹下ろしの一計算},
 year = {1974}
}