The aerodynamic safety of airplanes
A 1932 NASA technical report on the aerodynamic safety of airplanes, issued through the NASA Technical Reports Server and aimed at engineers rather than general readers. Its two pictures are plain engineering graphs: one with two numbered curves falling across a grid of angle-labelled verticals, the other with five numbered curves rising steeply on a gridded plot with a sharp peak in curve 3. A designer might take from them the clean, sparse look of mid-century technical charts, with numbered line families and simple axes that suit minimalist infographics.
