Accession Number:

AD0260504

Title:

THE LINEARIZED THEORY FOR SUPERCAVITATING HYDROFOILS OPERATING AT HIGH SPEEDS NEAR A FREE SURFACE

Descriptive Note:

Technical rept.

Corporate Author:

HYDRONAUTICS INC LAUREL MD

Personal Author(s):

Report Date:

1961-06-08

Pagination or Media Count:

63.0

Abstract:

Linearized cavity flow theory, in conjunction with a mapping technique, is used to develop general expressions for the characteristics of supercavitating or fully ventilated, two dimensional hydrofoils with prescribed pressure distributions, designed for operation near a free surface. It is assumed that the hydrofoils Are operating at zero cavitation number and that the Froude number - based on depth - is very large. The general expressions are used to derive the lift, cavity drag and shape of hydrofoils composed of 2-, 3-, and 5-term and constant pressure camber configurations, combined with angle of attack and quasi-parabolic thickness and designed for operation at specific depths. Examples of numerical results are given and the effect of foil strength is discussed and evaluated.

Subject Categories:

  • Fluid Mechanics

Distribution Statement:

APPROVED FOR PUBLIC RELEASE