An Investigation of the Drag of Windshields in the 8-Foot High-Speed Wind Tunnel
This is a 1939 NASA technical report, published by NACA, on wind tunnel tests measuring the aerodynamic drag of aircraft windshields in the 8-foot high-speed wind tunnel. Its pictures are engineering line drawings and graphs: plan and side views of a fuselage and wing profile with dimensions, plus pressure and drag coefficient curves plotted against nose radius, angle of attack and Mach number. A designer could take from them the clean, labelled graph style and the sparse dimensioned drawing layout.
