Collection of wind-tunnel data on commonly used wing sections
A 1930 technical report from the National Advisory Committee for Aeronautics, published in the United States, gathering wind-tunnel measurements for commonly used airfoil wing sections, aimed at aircraft designers and engineers. Its pictures are plain engineering line graphs with dense curves, grid lines and small captioned labels, plotting lift coefficient against drag and moment coefficients, with the profile sketches at the top offering a designer clear reference for how section shape relates to performance.
