Part 2 of the report contains data developed and com¬piled for use in the evaluation of cooling systems. Methods are given for the evaluation of aircraft penalty of cooling systems in terms of equivalent drag, increase in gross weight, reduced range, or reduced payload. The components of cooling systems are classified as equipment, distribution, intermediate and ultimate. Methods for the analytical simulation of equipment items by means of an equipment component are developed. The physical character¬istics and performance of coolant distribution systems are analyzed for constant velocity, constant-pressure—gradient, and constant-diameter designs. Methods are developed for the analytical representation of cooling load distribution along the header of a distribution system. Various types of heat exchangers applicable as intermediate components in cooling systems are analyzed. Methods are developed for the evaluation of physical characteristics of air-to-air, liquid-to-air, and liquid-to-evaporant heat exchangers. Data on performance and physical characteristics are com¬piled for items serving as parts of the ultimate component of cooling systems. Included are:air intakes, air ducts, radial and axial blowers, compressors and turbines.
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