反り角の大きい多重円弧翼形の遷・超音速二次元(減速)翼列実験 : 第4報, 節弦比の影響(1)

概要

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We carried out 2-D cascade tests of multiple-circular-arc (MCA) blades with a relatively high camber angle of 56 deg. in the inlet Mach number (M_1) region of 0.4≦M_1≦1.2, and with systematic variations of cascade geometry and incidence angle. Systematic data with respect to inlet Mach number characteristics of the cascade of MCA blades were obtatained. We discussed the effect of inlet Mach number on the relationship between incidence angle and parameters of cascade performance (incidence angle characteristics) in the constant space/chord ratio of 0.6 in the third report. In the present report, the following items are discussed on the basis of experimental results in the constant stagger angle of 10 deg.: 1. the effect of space/chord ratio on inlet Mach number characteristics.; 2. the effect of space/chord ratio on the relationship between incidence angle and parameters of cascade performance (incience angle characteristics); 3. the effect of space/chord ratio on stall incidence angle, and reference incidence angle; 4. the relationship between incidence angle and critical inlet Mach number in the set of space/chord ratios of 0.4, 0.6 and 0.8; 5. optimal incidence angle and effective working range of incidence angle on the basis of critical inlet Mach number which was deduced from the above mentioned relationship of (4).
一般社団法人日本機械学会の論文
1991-09-25