Radiator Design and Installation
A 1939 NASA technical report on radiator design and installation, issued as a typed and printed engineering document for aeronautical researchers and engineers. The first page shows a photographed three-tube corrugated radiator section and a sample tube for friction-loss study, while the second page plots cooling efficiency against tube length for several corrugated-tube radiator variants. A designer might take from them the stark, schematic look of engineering diagrams, with clean grey photographs and labelled line graphs.
