Robert W. Wilson, Paul H. Richard, Kenneth D. Brown
Variable charge-air flow, cooling-air pressure drop, and fuel-air ratio investigations were conducted to determine the cooling characteristics of a full-scale air-cooled singly cylinder on a CUE setup. The data are compared with similar data that were available for the same model multicylinder engine tested in flight in a four-engine airplane. The cylinder-head cooling correlations were the same for both the single-cylinder and the flight engine. The cooling correlations for the barrels differed slightly in that the barrel of the single-cylinder engine runs cooler than the barrel of the flight engine for the same head temperatures and engine conditions.
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