Heat-transfer processes in air-cooled engine cylinders
A 1938 NASA technical report on heat transfer in air-cooled engine cylinders, issued for aeronautical engineers and researchers studying cylinder head and barrel temperatures. Its four pictures are dense engineering charts: plotted curves of temperature against engine speed, cooling air weight against air velocity, and heat-transfer data with dashed calculated and solid experimental lines on grey grid paper, offering a designer little beyond restrained graph-paper structure and line rhythm.
