Tests on Thrust Augmenters for Jet Propulsion
A 1932 NACA technical note on jet propulsion, reporting laboratory tests of thrust augmenters, published by the National Advisory Committee for Aeronautics for engineers and researchers. The pictures are plain engineering line graphs, technical drawings and a black-and-white photograph of a test rig, with clean grid paper, fine black linework and no decoration. A designer could take the restrained, measured diagram style, with its labelled curves, dashed guide lines and sectioned nozzle views, as a model for clean technical infographics.
