Forces on Elliptic Cylinders in Uniform Air Stream
A 1929 NASA technical report on forces acting on elliptic cylinders placed in a uniform air stream, compiled for aeronautical engineers and researchers studying aerodynamic loads. Its pictures are plain engineering graphs: pressure and drag curves plotted against half-thickness, air speed and yaw angle, with measured data points, fitted lines and labelled families of curves. A designer might take from them only the restrained graph conventions of early aerodynamic reports, such as grid layouts, dotted-versus-solid data markers and tidy axis labelling.
