Accession Number:

AD0257032

Title:

THE EFFECT OF SURFACE WAVES ON SOME DESIGN PARAMETERS OF A HYDROFOIL BOAT

Descriptive Note:

Technical rept.,

Corporate Author:

HYDRONAUTICS INC LAUREL MD

Personal Author(s):

Report Date:

1961-01-01

Pagination or Media Count:

1.0

Abstract:

A study was made of the effect of the various sea states on flow over hydrofoils to determine the motions of hydrofoil boats, keel clearances and the demands to be made on the controls. Charts were prepared giving expected significant hydrofoil angles of attack and encounter frequencies for various sea states and boat speeds. Curves of expected significant mean wave heights and wave lengths as a function of sea state are given for both fully developed and duration and fetch limited seas. The principal properties of swells and the principal effects of shallow water on the sea state are also discussed. The calculations are based on the reasonable assumption of a Gaussian distribution of the wave amplitudes and the use of Neumanns spectrum, which appears to be the most accurate existing formula that describes the energy spectrum of the short crested sea. Author

Subject Categories:

Distribution Statement:

APPROVED FOR PUBLIC RELEASE