Investigations on the downwash behind a tapered wing with fuselage and propeller
This is a 1938 NACA technical memorandum (No. 876) from the National Advisory Committee for Aeronautics, issued as a report of wind-tunnel test results for aircraft engineers and researchers. Its pages show plotted aerodynamic curves, engineering line drawings of wing and fuselage sections, and graphs of lift and drag coefficients against angle of attack. A designer could take from them the clean, dense technical plotting style: thin black line graphs on white grids, labelled curve families, and orthographic drawings of a tapered wing, fuselage and propeller.
