Load Tests on a Stiffened Circular Cylindrical Shell
This is a 1938 NASA technical report on load tests of a stiffened circular cylindrical shell, an aeronautical engineering document prepared for researchers and structural engineers. The pictures are plain black-and-white engineering graphs: polar diagrams of bulkhead stresses, circular cross-section plots, strip shear charts, and line graphs of stringer force against applied force, with ruled grids and labelled curves. A designer could take from them the clean, hand-drafted look of mid-century technical charts, with dense labels and fine radiating lines.
