Model supports and their effects on the results of wind tunnel tests
This is a 1923 aeronautical technical report on how model supports such as spindles and struts distort wind tunnel measurements, prepared for aircraft researchers by the NASA Technical Reports Server collection. The pictures are plain line graphs of lift coefficient against angle and pen drawings of airfoil mounting arrangements, with a few technical labels and no ornament, so a designer might borrow their clean graph grids and schematic line diagrams for engineering-style infographics.
