The Fokker "Universal" commercial airplane
A 1928 NACA Aircraft Circular from the NASA Technical Reports Server documenting the Fokker Universal commercial airplane, issued for aeronautical engineers and aircraft designers. Its single picture is a set of orthographic technical drawings of the aircraft in plan, front, side and rear views, with dimensions and a Wright Whirlwind J-5 engine note. A designer could take from it the clean, labelled line-drawing convention used for engineering three-view diagrams.
