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Tests of an N.A.C.A. 23012 Airfoil with a slotted deflector flap (1939)
NASA Technical Reports Server (NTRS) · leaf 8
lig. 3 1 N.A.C.A. Technical Note No. 6yy 0.20c split flap Slotted deflector flap N.A.G.A. slotted flap 1.4 … 0 10 20 30 40 50 60 70 6f, deg. ffigure 3.- Comparison of increments of maximum lift for three types of flap; ■NASA Technical Reports Server (NTRS)
Internet Archive · NASA Technical Reports · Public domain (US government work). Free to use for anything.
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