The Vertical Wind Tunnel of the National Advisory Committee for Aeronautics
A 1931 technical report from the National Advisory Committee for Aeronautics, published in the United States for engineers and aeronautical researchers, describing the design and testing of a vertical wind tunnel. The pictures are plain engineering drawings, graph plots and a photograph of the apparatus, showing a sectional elevation with labelled parts, a set of lift and drag curves, and a single response curve. A designer could take from them the clean line-drawn cutaway style, labelled diagram layout and the spare grid-and-curve plotting conventions of period technical publications.
