ONACA four digit"series airfoil NACA2412 The first digit: maximum camber in hundredths The second digit: the location of maximum camber along the chord from leading edge in tenth of the chord The last two digits: maximum thickness in hundredth of the chord NACA0012: symmetrical airfoilNACA “four digit” series airfoil NACA2412: The first digit: maximum camber in hundredths; The second digit: the location of maximum camber along the chord from leading edge in tenth of the chord; The last two digits: maximum thickness in hundredth of the chord. NACA0012: symmetrical airfoil