N.A.C.A* Technical Memorandum STo.578 Figs.1,2,3 … Fig.l The Rohrbach "Eomar" flying boat. Fig.2 Production of induced drag Wi by changing the angle of attack. 1.15 0 5 , 10 15 b/t Fig.3 Ratio of induced to-minimum drag of rectangular wing plotted against aspect ratio (Betz).
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