Take-off and propeller thrust
A 1933 NASA Technical Reports Server scan of a technical report on take-off and propeller thrust, produced for aeronautical engineers. Its four pictures are dense engineering charts of propeller performance: families of labelled curves plotted over grids, with hatched shaded regions and tabulated propeller designations. A designer might take from them the restrained palette of black lines on white, the rhythm of converging curves, and the clean grid-and-annotation layout typical of mid-century technical drawing.
