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A presentation of the results of previous RAND studies concerned with variations in the density of air cargo and the effects of these variations on aircraft design, aircraft capacity estimates, airlift operations, and airlift costs. The Memorandum presents methods of comparing costs of airlifting different commodities, which take into account the densities of the commodities and the characteristics of the transporting aircraft. Attention is drawn to implications of the fact that air cargo varies in density and rarely, if ever, adheres to the average values that are usually computed. Generalized radar concepts with the use of array antenna.

This report is part of the RAND research memorandum series. The Research Memorandum was a product of RAND from 1948 to 1973 that represented working papers meant to report current results of RAND research to appropriate audiences.

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