Figs.18,20 N.A.C.A. Technical Memorandum No.667 a,- V = -60° To, y = -30° c, Y = 0° d, Y = 30° e, Y = 60 … Fig.18 Normal force coefficient plotted against "b/a , a and slope of flow Y. 1.0 -4 h- 0.8 V 0.6 0.4 -is. 0.2 0 0.2 0,4 0.6 0.8 1.0 Jig.20 Hatio Vi/vg in front and "behind screen l)y discharge of water in air through a flat screen.(Full line = theoiy)
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