Metal construction development. Part I : strip metal construction - fuselage
This is a 1929 NACA technical memorandum on metal construction, a government aeronautical research report issued by the National Advisory Committee for Aeronautics for engineers and aircraft designers. Its pictures are plain line plates: a graph of curves plotted on gridded paper, polar outline diagrams of tube sections, and photographs and drawings of riveted strip-metal joints and trusses. A designer could take from them the precise, schematic look of early engineering documentation, with clean callouts, dimension labels and tubular frame joints.
