2026-03-10T16:14:02Z https://jaxa.repo.nii.ac.jp/oai

oai:jaxa.repo.nii.ac.jp:00034396 2023-06-20T23:42:53Z 1887:1890 1896:1898:1899:1992

Lifting-Line Theory for Cascade of Blades in Subsonic Shear Flow NAMBA, Masanobu ASANUMA, Tsuyoshi A theory of lifting-lines for cascade of blades in subsonic shear flow is developed by assuming that the dependence of the local lift force upon the local upstream Mach number in shear flow is same as that in two-dimensional flow. By comparing theoretical results with experimental ones, the physical validity of the present theory is discussed. The effect of compressibility upon the mean characteristics of a cascade is found to depend upon the root of harmonic mean square of upstream Mach number (M^^^-^*_<-∞>). Experimental correlation is satisfactory as far as M^^^-^*_<-∞> of the shear flow lies below a certain limit value, and this limit value corresponds to the two-dimensional Mach number beyond which the small disturbance theory for two-dimensional cascade shows poor validity. Significance of M^^^-^*_<-∞> as a criterion for the mean characteristics is also confirmed experimentally. 資料番号: SA2400561000 東京大学宇宙航空研究所 Institute of Space and Aeronautical Science,University of Tokyo 1967-08 eng departmental bulletin paper https://jaxa.repo.nii.ac.jp/records/34396 0372-1418 AA00675986 ISAS report/Institute of Space and Aeronautical Science,University of Tokyo 32 8 133 179 https://jaxa.repo.nii.ac.jp/record/34396/files/SA2400561.pdf application/pdf 2.8 MB 2020-01-24