Elastic Instability of Members Having Sections Common in Aircraft Construction
This is a 1932 NACA technical report by the NASA Technical Reports Server, held by the NASA Technical Reports collection, written for aircraft engineers on the elastic buckling of structural members with cross-sections typical of aircraft frames. The pictures are engineering plots and a test-rig diagram: grid-paper graphs of compressive load against twist and strain, and a vertical section of a column testing apparatus with labelled bearings and fixtures. A designer might borrow the crisp black-line charts on fine grid paper and the schematic clarity of the apparatus drawing as period technical graphics.
