Heat transfer from cylinders having closely spaced fins
A 1937 NASA technical report on heat transfer from finned cylinders, drawn from the NASA Technical Reports Server collection, with its pictures being engineering graphs rather than illustrations. The two plates chart heat-transfer coefficients against air speed for fin and cylinder configurations, with solid experimental curves set against dashed calculated ones, and a designer might take from them the clean grid-and-curve style of technical plotting, with its labelled axes, paired line weights and small caption blocks.
