The historical evolution of airfoil sections from 1908-1944. The last two shapes are low-drag sections designed to have laminar (uninterrupted) flow over 60 to 70 percent of chord on both the upper and lower surfaces. The NACA airfoils subsequently influenced the design of every modern aircraft wing.
The historical evolution of airfoil sections from 1908-1944. The last two shapes are low-drag sections designed to have laminar (uninterrupted) flow over 60 to 70 percent of chord on both the upper and lower surfaces. The NACA airfoils subsequently influenced the design of every modern aircraft wing.Image Credit: NACA