Some Effects of Injection Advance Angle, Engine-Jacket Temperature, and Speed on Combustion in a Compression-Ignition Engine
This is a 1936 NACA technical report on compression-ignition engine combustion, issued by the National Advisory Committee for Aeronautics for engineers and researchers studying diesel-type engines. Its pictures are grainy high-speed photographs in rows of circular frames showing fuel spray and flame formation in a cylinder across crankshaft degrees, with dark backgrounds and bright white combustion clouds that a designer could use as references for motion, fire, or smoke textures.
