Wind-tunnel investigation of an N.A.C.A. 23012 airfoil with two arrangements of a wide-chord slotted flap (1939)
NASA Technical Reports Server (NTRS) · leaf 22
Fig. 11 N.A.C.A. Technical Note No. 715 1.4 … Flap deflection, 5-f, deg. Figure 11.- Comparison of increments of section maximum lift coefficient for slotted flaps 1-a and 1-b when moved arid deflected along the selected optimum paths.
NASA Technical Reports Server (NTRS)
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