Experiments with Planing Surfaces
A 1934 NASA technical report on experiments with planing surfaces, the hydrodynamic hulls that skim across water, issued as a technical memorandum for aeronautical engineers and naval researchers. Its pictures are engineering charts of resistance, lift and moment coefficients plotted as fine black curves and scattered data points on cream paper, plus a page of small graphs, a spray-formation diagram with cross-sections, and one photograph of a model in a tank; a designer might take the spare grid-and-curve vocabulary and the spray-pattern sketches as graphic material.
