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Flow Observations with Tufts and Lampblack of the Stalling of Four Typical Airfoil Sections in the NACA Variable-density Tunnel (1938)
NASA Technical Reports Server (NTRS) · leaf 14
0 .3 .4 .6 .8 1.0 1.3 1.4 1.6 Section lift coefficient, o2 Figure 3.- Flow observations on the N.A.C.A. 4412 airfoil.NASA Technical Reports Server (NTRS)
Internet Archive · NASA Technical Reports · Public domain (US government work). Free to use for anything.
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