Compression-ignition engine performance with undoped and doped fuel oils and alcohol mixtures
A 1939 NASA technical report on compression-ignition engine tests comparing undoped and doped fuel oils and alcohol blends, written for engineers and researchers. Its pictures are dense technical graphs of ignition lag, rate of pressure rise and brake horsepower against fuel quantity, plus a cutaway line drawing of a combustion chamber with arrows showing swirl and flame paths; a designer might borrow the clean measured-chart styling and the precise sectional linework.
