Full Scale Tests on a Thin Metal Propeller at Various Tip Speeds
This is a 1929 NASA technical report on full-scale wind tunnel tests of a thin metal propeller at several tip speeds, issued for aeronautical engineers and researchers. The pictures are plain engineering charts: grid-backed line graphs of efficiency, thrust coefficient and propeller deflection plotted against advance ratio, with curves labelled by RPM and fine data points marked along them, offering a designer little beyond the graph layout and clean dark curve styling.
