![]() 1 First of all, start by installing the required dependencies:.When Boeing refers to the 767 and 777 as having aft-loaded wings, what they are implying is that both aircraft use supercritical airfoils. The final two digits again indicate the maximum thickness (t) in percentage of chord. The next two digits, when divided by 2, give the position of the maximum camber (p) in tenths of chord. NACA Five-Digit Series: The first digit, when multiplied by 3/2, yields the design lift coefficient (cl) in tenths. The ’12’ indicates maximum thickness is 12% of the chord length. The ‘4’ indicates maximum camber is at 40% of the chord length. For example, a ‘2412’ airfoil is parsed to mean: The leading ‘2’ indicates maximum camber is 2% of chord length. NACA airfoils map a four digit code to an airfoil shape. ![]() The shape of the NACA airfoils is described using a series of digits following the word “NACA”. The NACA airfoils are airfoil shapes for aircraft wings developed by the National Advisory Committee for Aeronautics (NACA).
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