AUGUST 24, 2019
By Donald L. Blount and David L. Fox
A valid performance prediction technique for small craft is an invaluable tool not only for the naval architect, but also for the operators and builders. This presentation describes the methodology for making speed-power predictions for hard-chine craft of the types found in the offshore, military, and recreational applications.
The distinct advantage of this method is that existing technical data have been organized into a logical approach and areas of limited data have been overcome by the presentation of engineering factors based on model tests and full-scale trials of specific hull forms. This speed-power prediction method accounts for hull proportions, loading, appendage configuration, propeller characteristics (including cavitation), and resistance augmentation due to rough water.
In case you would like to receive the full paper or discuss about this subject, please contact Jeffrey Bowles
References
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13. Mathis, P. B. and Gregory, D. L., “Propeller Slipstream Performance of Four High-speed Rudders Under Cavitating Conditions,” NSRDC Report 4361, May 1974.
14. Fridsma. G.. “A Systematic Study Of The Rough-water Performance of Planing Boats,” Davidson Laboratory Report R-1275. Nov. 1969.
15. Fridsnra, G., “.4 Systematic Study of the Rough-Water Performance of Planing Boats (Irregular Waves-Part II),” Davidson Laboratory Report K-1495. M:mh 1971.
16. Blount, D. L., Stuntz, G. R., Gregory, D. L.. and Frome. M. .I., “Correlation of Full-Scale Trials and Model Tests for a Small Planing Boat,” Trans. RINA. 1968.
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