Two-stroke-cycle engines for airplanes
A 1926 technical report from the NASA Technical Reports Server, a digitised government aeronautics document on two-stroke-cycle engines for airplanes, written for engineers and aircraft designers. Its single picture is a line drawing of a V-twin engine cross-section, showing two angled cylinders meeting a crankcase with a central intake port and a circular crank housing, a clean schematic a designer could borrow for mechanical diagram motifs.
