Nieuport-Delage 640 (French) : commercial high-wing monoplane
A 1929 National Advisory Committee for Aeronautics aircraft circular from the NASA Technical Reports Server, issued for engineers and aviation researchers, documenting the Nieuport-Delage 640 French commercial high-wing monoplane. The pictures are plain black-and-white photographs and technical line drawings, with a top, side and front view of the aircraft and dimension callouts, offering a designer clean, measured diagrams of early monoplane silhouettes and propeller-and-wing geometry.
