Wind Tunnel Tests on an Airfoil Equipped with a Split Flap and a Slot
This is a 1929 NACA technical note reporting wind tunnel tests on an airfoil fitted with a split flap and a gauze-covered slot, published by the NASA Technical Reports Server for aeronautical engineers and researchers. The drawing gives the airfoil section with flap angles and dimensions, the graph plots lift and drag coefficients against angle of attack with and without the slot, and the photographs show the model mounted in the wind tunnel and its streamlined wing profile.
