A complete tank test of a flying-boat hull with a pointed step -N.A.C.A. Model No. 22
This NACA technical report from 1934 presents a complete tank test of a flying-boat hull with a pointed step, published by the National Advisory Committee for Aeronautics for aeronautical engineers. Its three pictures are dense engineering charts plotting resistance and trimming moment against speed in feet per second for varying load in pounds, with multiple labelled curves per sheet. A designer might take from them only the spare, grid-based line-graph vocabulary of mid-century technical documentation: thin black curves, dotted data points, and tabular axes.
