Lautal as a material for airplane construction
A 1929 NASA Technical Reports Server document on Lautal, an aluminium alloy, for airplane construction, written as an engineering report for aircraft designers and builders. Its pictures are black-and-white technical drawings: a riveted lap joint in section, a riveted tube splice with a bolted fitting, and welded tube and cylinder ends with weld lines marked. Designers can take from them the plain schematic conventions for showing joints, rivet patterns and weld seams in structural diagrams.
