Part 1 of the report presents an introduction to the scope of the study, concerned with the analytical evalua¬tion of equipment cooling systems for steady-state condi¬tions of aircraft and equipment operation over ranges of altitudes from sea level to 65,000 feet, flight Mach num-bers up to 1,8, equipment temperatures from 1300 to 250°F, equipment dispersion up to 150 feet and system cooling capacities up to 75 kilowatts. Terminology peculiar to the study is defined. Cooling system components are clas¬sified as equipment, distribution, intermediate and ulti¬mate. The results obtained in the evaluation of these systems of direct and indirect type are summarized with reference to physical characteristics, aircraft gross weight, penalty and other merit considerations.
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