Accession Number : ADD001168

Title :   Fixed Hydrofoil Control Surface.

Descriptive Note : Patent Application,

Corporate Author : DEPARTMENT OF THE NAVY WASHINGTON D C

Personal Author(s) : Wolf,J H ; Englar,R J ; Williams,R M

Report Date : 17 Sep 1973

Pagination or Media Count : 8

Abstract : The patent application relates to a fixed hydrofoil control surface for use as a rudder or pitch control fin attached to a vehicle, and having an elliptical hydrofoil shaped body with a pair of jet discharge slots formed parallel and along the trailing edge. Liquid, forced out of one or the other slots, deflects the main flow from over the hydrofoil by the Coanda effect to one or the other side to create a positive or negative control force without the need of deflecting the control surface.

Descriptors :   *Hydrofoils, *Hydrodynamic control surfaces, Patents, Hydrofoil craft, Slots, Coanda effect

Subject Categories : Marine Engineering

Distribution Statement : APPROVED FOR PUBLIC RELEASE