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RESEARCH PAPERS

Force and Moment Measurements of Supercavitating Hydrofoils of Finite Span With Comparison to Theory

[+] Author and Article Information
P. Leehey, T. S. Stellinger

Dept. of Ocean Engineering, MIT, Cambridge, Mass.

J. Fluids Eng 97(4), 453-462 (Dec 01, 1975) (10 pages) doi:10.1115/1.3448069 History: Received February 05, 1975; Online October 12, 2010

Abstract

Measurements were made of lift, drag, and moment coefficients, and cavity length for aspect ratio 3 and 5 supercavitating hydrofoils of elliptical planform. These measurements are compared with theoretical predictions obtained from matching asymptotic expansions for large aspect ratio. Good agreement was obtained for lift and drag coefficients for angles of attack from 10 deg to 15 deg and for a wide range of cavity lengths. Theoretical moment coefficients were too large indicating the need for lifting surface corrections.

Copyright © 1975 by ASME
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