Compressive Tests of a Monocoque Box
This is an NACA technical note from 1939 reporting compressive load tests on a monocoque box, a stressed-skin aircraft structure, written by the National Advisory Committee for Aeronautics for aeronautical engineers and researchers. The pictures are black-and-white photographs of the test specimen mounted in the lab, showing its buckled sheet panels under load, its end view with plates removed, and strain gauges mounted on stringers and corner posts. A designer might take from them the rivet-and-stringer grid and the dense, industrial documentary look of mid-century engineering reports.
