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The Effect on Lift, Drag, and Spinning Characteristics of Sharp Leading Edges on Airplane Wings (1933)
NASA Technical Reports Server (NTRS) · leaf 23
Fig.8 N.A.C.A. Technical Note No .447 … Figure 8.-Three-view drawing of XNZY-1 airplane.NASA Technical Reports Server (NTRS)
Internet Archive · NASA Technical Reports · Public domain (US government work). Free to use for anything.
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