![]() Since then, the wind tunnel, complex mathematics, and the computer have all played important roles in airfoil development. From about 1912, airfoil development and research moved to the wind tunnel laboratories found at the University of Göttingen in Germany, the Royal Aircraft Factory in the United Kingdom, and the National Advisory Committee for Aeronautics (NACA) in the United States. The Wright brothers, many of the early designers used “eyeball engineering” in developing or copying the airfoil shape used on their airplanes. Airfoil is defined as the cross-section of a body that is placed in an airstream in order to generate useful aerodynamic force. What aviation pioneers discovered, which still holds true today, is that the most efficient way to do this is to use a curved, streamlined shape-the airfoil. Introduction In the early 1800s, Sir George Cayley discovered that a curved surface produced more lift than a similar sized flat plate. ![]()
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