Why Can Airplanes Fly Upside Down?
In 1945, the National Advisory Committee for Aeronautics, precursor of NASA and source of much of our knowledge about practical aerodynamics, published a hefty compendium of airfoil data, NACA Technical Report 824, which later appeared in book form under the title Theory of Wing Sections. The names of the authors, Abbott and von Doenhoff, have […]