Test-Stand Investigation of Cooling Characteristics and Factors Affecting Temperature Distribution of a Double-Row Radial Aircraft Engine

摘要

Investigations were made to determine cause of nonuniform distribution of temperature in cylinders. Variations in cooling air-pressure drops, power, and fuel-air ratio were observed to examine their effect on temperature distribution. Methods and calculations of experiment are included. Temperature variation remaining among cylinders after improving distribution of cooling-air pressure drop, power, and fuel-air ratio averaged + or - 20 deg F.