The Structure and Properties of Parachute Cloths
A 1930 NACA technical note on parachute cloth, issued by the National Advisory Committee for Aeronautics and preserved through the NASA Technical Reports Server. It reports laboratory tests of silk and fabric samples for air permeability, tear resistance and elastic properties, written for aeronautical engineers. The pictures are plain technical plates: a graph of pressure differences against air flow, a magnified fabric weave photograph, apparatus diagrams and a rectangular tear test specimen with angled cuts, offering a designer clean line diagrams and fine woven textures.
