A study of the factors affecting the range of airplanes
This is a 1937 NACA technical report by the NASA Technical Reports Server collection, a study of the factors affecting airplane range, aimed at aeronautical engineers. Its pictures are plain engineering charts: curves plotting lift-to-drag ratio against air speed, launch speed against flight speed, and catapult thrust against incline angle, drawn on gridded paper with labelled axes. A designer could take the restrained grid-and-curve graphic language, with its small italic captions and light linework, as a model for technical diagrams.
