The Caproni "90 P.B." military airplane (Italian) : a giant biplane of 6000 horsepower
A 1930 NACA aircraft circular issued by the NASA Technical Reports Server, documenting the Italian Caproni 90 P.B. military airplane for engineers and aviation researchers. Its photographs show the giant biplane's wings, fuselage and engines from several angles, while the drawings give general arrangement views with dimensions in plan, front and side elevation, useful to a designer for its straight technical line and grid-based layout.
