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Note on an Improved Short-Cut Method Jor Estimating Aircraft Direct Operating Costs

Published online by Cambridge University Press:  28 July 2016

Extract

In the early stages of preliminary design, it is essential to have a method for the comparison of aircraft on an operating cost basis. The standard S.B.A.C. method is too lengthy and, in any case, demands a greater amount of data than is usually available in the early design stages.

The formula presented in this note is an extension to the ones presented by the author in the January 1955 and November 1956 Journals and is more accurate in that it provides for variation in aircraft first cost, type of power plant, speed and range.

It is submitted that the formula gives a reasonable first estimate, suitable for early design comparisons, and that the few parameters required are normally available at the earliest stage of the design.

Type
Technical Notes
Copyright
Copyright © Royal Aeronautical Society 1957

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