Inside Out Library · ExploreTests of an N.A.C.A. 23012 Airfoil with a slotted deflector flap (1939)NASA Technical Reports Server (NTRS) · leaf 6rigs. 1,4 5.A.O.A. Teohnloal Hots Ho. 699NASA Technical Reports Server (NTRS)Internet Archive · NASA Technical Reports · Public domain (US government work). Free to use for anything.More pictures from Tests of an N.A.C.A. 23012 Airfoil with a slotted deflector flapMore like this
