Wind-Tunnel Investigation of an NACA 23012 Airfoil with Various Arrangements of Slotted Flaps (1939)
NASA Technical Reports Server (NTRS) · leaf 20
17 AN N. A. C. A. 23012 AIRFOIL WITH SLOTTED FLAPS … EFFECT ON PROFILE DRAG OF BREAK IN AIRFOIL SURFACE Slotted flap 3.—Contours of the flap-nose position DUE TO SLOT for the maximum lift coefficients of slotted flaps 3-f The increments of profile drag AciQ caused by the and 3-g are given in figures 20 and 21, respectively. Both of these flaps are…
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