A Description and Test Results of a Spark-Ignition and a Compression-Ignition 2-Stroke-Cycle Engine
A 1935 technical report from the National Advisory Committee for Aeronautics, published in the United States, describing and testing two two-stroke-cycle engines, one spark-ignition and one compression-ignition, for engineers and aviation researchers. Its pictures are measured line drawings of engine sections and valve gear in black ink on cream paper, with a few halftone photographs of a water-cooled test engine on a test stand, giving a designer clean mechanical diagrams and plain industrial machinery to draw from.
