Hamilton A. Smith, Raymond F. Schaefer
naca-tn-2074
Apr 1950
An investigation has been made of the two-dimensional aerodynamic characteristics of three airfoil sections formed by removing 1.5, 4.0, and 12.5 percent of the original chord from the trailing edge of the NACA 0012 airfoil section.
An Adobe Acrobat (PDF) file of the entire report:
http://naca.central.cranfield.ac.uk/reports/1950/naca-tn-2074.pdf