Approximate calculation of multispar cantilever and semicantilever wings with parallel ribs under direct and indirect loading
This is a 1932 NACA technical report by the NASA Technical Reports Server collection on approximate structural calculation of multispar cantilever and semicantilever aircraft wings with parallel ribs under direct and indirect loading, written for aeronautical engineers. The pictures are engineering diagrams: a spanwise load-distribution chart with axis labels, a schematic of spar forces and moments, bar graphs of load scales against angles, and a rib deflection drawing with loaded and unloaded outlines. A designer might take from them only the clean, labelled line-drawing style of mid-century technical figures, with dashed reference lines, arrows and tabular scales.
