For anyone really interested, this is the authoritative reference for NACA, etc. airfoils. Theory of Wing Sections by Abbott and von Doenhoff (1959) https://

For anyone really interested, this is the authoritative reference for NACA, etc. airfoils. Theory of Wing Sections by Abbott and von Doenhoff (1959) https://www.amazon.com/Theory-Wing-Sections-Aeronautical-Engineering/dp/0486605868 https://www.amazon.com/Theory-Wing-Sections-Aeronautical-Eng...