Loads and calculations of army airplanes
A 1921 technical report on loads and calculations for army airplanes, issued through NASA's Technical Reports Server as an aeronautical engineering document. The single picture is a line drawing of a biplane wing section with construction lines, dimension markings and labelled points for setting out the airfoil geometry. A designer might take from it the clean diagrammatic style of engineering construction drawings, with thin leader lines, dashed guides and lettered reference points.
