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A note on the prediction of flying boat take-off

Published online by Cambridge University Press:  04 July 2016

D. Howe
D. Howe*
Affiliation:
College of Aeronautics, Cranfield Institute of Technology
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Summary

It is useful to have available simple prediction formulae for preliminary design work. In the case of landplane take-off such formulae exist, being expressed only in terms of a few major parameters. The flying boat situation is more complex due to the much greater and more variable total drag. By making appropriate assumptions an equivalent formula for flying boat take-off has been derived. Comparison of typical cases of the landplane and flying boat shows that whereas the take-off distance of the former is approximately inversely proportional to thrust/weight ratio to the power of 1·35, in the case of a flying boat it is inversely proportional to the square of thrust/weight ratio.

Type
Research Article
Information
The Aeronautical Journal , Volume 90 , Issue 892 , February 1986 , pp. 49 - 52
Copyright
Copyright © Royal Aeronautical Society 1986 

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References

1. Patterson, J. H. Recent developments in the hydrodynamic design of flying boats. Journal of Royal Aeronautical Society, May 1955, 59.Google Scholar