Experimental and analytical investigation of a monocoque wing model loaded in bending
This is an NACA technical memorandum from 1939, issued by the National Advisory Committee for Aeronautics for aircraft engineers and structural researchers, reporting tests of a monocoque wing model loaded in bending. The pictures are engineering line drawings and graphs: test-rig schematics with a screw jack and restraint, a cutaway wing section with ribs and stiffeners, and 3D stress surfaces comparing measured values with elementary bending theory. A designer might borrow the clean technical diagram style, the grid-based plotting, and the layered wireframe look of the stress charts.
