Tests in the variable-density wind tunnel of the NACA 23012 airfoil with plain and split flaps (1939)
NASA Technical Reports Server (NTRS) · leaf 4
377 THE N. A. C. A. 23012 AIRFOIL "WITH PLAIN AND SPLIT FLAPS … Figube 6.—Section characteristics for the N. A. C A. 23012 airfoil (inverted) with Figukz 7.—Section characteristics for the N. A. O. A. 23012 airfoil (inverted} with 0.20c plain flap. Small flap deflections. 0.20c plain flap. Large flap deflections.
NASA Technical Reports Server (NTRS)
Internet Archive · NASA Technical Reports · Public domain (US government work). Free to use for anything.
