Relative Efficiencies and Design Charts for Various Engine-Propeller Combinations, Special Report
This is a 1936 NACA technical report, issued by the National Advisory Committee for Aeronautics and preserved through NASA's Technical Reports Server, presenting propeller performance charts and test data for engine-propeller pairings. Its pictures are engineering line graphs of thrust and efficiency curves, a photograph of a test nacelle in a wind tunnel, and rows of propeller blades labelled with drawing numbers, offering a designer a plain, rigorous visual vocabulary of technical diagrams.
