Heinkel HE 70 commercial airplane (German) : a seven-seat cantilever low-wing monoplane
A 1933 NACA technical report issued by the National Advisory Committee for Aeronautics, describing the German Heinkel He 70 seven-seat commercial monoplane for aeronautical engineers and researchers. The three pictures are an in-flight photograph with landing gear retracted, a close-up of the cabin doors and cockpit hatch, and a three-view line drawing with wing area, length, height and span dimensions; a designer could take the clean low-wing silhouette and the precise drawing layout as reference for streamlined vehicle forms.
