An Investigation of the Aerodynamic Characteristics of an Airplane Equipped with Several Different Sets of Wings
This is a 1929 NACA technical report by the National Advisory Committee for Aeronautics, held by NASA's Technical Reports Server, presenting wind-tunnel measurements of an airplane fitted with several different wing sets. Its pictures are plain engineering plots of lift and drag coefficients against angle of attack and other variables, drawn as thin black curves with dotted data points on squared grids, with a designer able to take from them only the clean graph layout and labeled curve styling.
