555. International Cargo Distribution and Its Future
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Paper
Abstract
A sound basis for the development of the parameters of the weight problem, as a factor in cargo aircraft economics, is to start with the problem as it exists today and extrapolate to determine future problems. At the present time in our current operation with jet freighters, we do not have a weight
Problem exception a limited number of flights, primarily related to special circumstance loads. The industry, for example, on the North Atlantic has an average of less than 10% of its freighter flights either weighted out or cubed out. This is a temporary factor as the tremendous increase in cargo
Ton miles annually will result in full loads on a majority of The aircraft in a short time, In this event our problem under existing circumstances is not one of weight but of cube. The design densities of existing aircraft run from 12 to13.5 pounds per cubic foot. Under our current rates, we are charging cube charges on shipments below the level of 8.9 pounds per cubic foot density and our average ‘stacked’ density in the aircraft is in the range of 10 pounds per cubic foot. Obviously, with this utilization we have a stacking improvement factor and a weight load capability where our existing average cubic weight ratio must be increased by 20-25% before we come to a point where weight becomes an impeding factor in the economics of our operation.
