Cantilever Wings for Modern Aircraft: Some Aspects of Cantilever Wing Construction with Special Reference to Weight and Torsional Stiffness
A 1929 NASA technical report, issued by the National Advisory Committee for Aeronautics, on the construction of cantilever aircraft wings, written for aeronautical engineers and designers. Its pictures are typed-caption engineering drawings: an isometric view of a wing's internal frame with labelled spars, ribs and diagonal bracing, a plan detail of bulkheads and a shaded aileron area, and a line graph of weight per square foot against span station. A designer could take from them the clean, schematic language of structural diagrams, with diagonal lattice patterns and labelled callouts.
