A Preliminary Motion-picture Study of Combustion in a Compression-ignition Engine
This is a 1934 NASA technical report, a preliminary study filmed with motion pictures of fuel combustion inside a compression-ignition engine, published for engineers and researchers. The pictures are grayscale frames of a round, glowing combustion chamber view and photographic traces with timing scales marked in degrees before and after top center, useful to a designer for stark monochrome scientific imagery with dark circular framing and tick-mark rulers.
