Dynamic testing of airplane shock-absorbing struts
A 1932 NASA technical report on dynamic testing of airplane shock-absorbing struts, with technical drawings of test rigs issued for engineers. Its pictures are numbered line diagrams of cylindrical strut assemblies in elevation and sectional views, with labelled parts, dimension lines and a drop-test frame. A designer could take from them the clean, schematic engineering drawing style and the layered, labelled section technique.
