Title:
METHOD AND APPARATUS FOR OSCILLATING A FOIL IN A FLUID
Document Type and Number:
WIPO Patent Application WO/2011/115475
Kind Code:
A3
Abstract:
The present invention relates to a method and apparatus for oscillating a foil in a fluid. The method according to the invention comprises the steps of - generating an oscillating heave motion of the foil in the fluid, the oscillation cycle of the heave motion consisting of two strokes of the foil in opposite direction; - generating an oscillating pitching motion of the foil in the fluid; characterized by - controlling the heave motion; and - adjusting the pitch during the oscillation cycle of the heave motion; such that - over 65% to 85% of the oscillation cycle of the heave motion, for each stroke of the foil, the absolute angle of attack is more than 60% of the maximum absolute angle of attack during the stroke.
Inventors:
GORIS BAS (NL)
Application Number:
PCT/NL2010/000125
Publication Date:
November 03, 2011
Filing Date:
August 24, 2010
Export Citation:
Assignee:
GORIS BAS DOING BUSINESS AS OSCILLATING FOIL DEV (NL)
GORIS BAS (NL)
GORIS BAS (NL)
International Classes:
B63H1/36; F03B17/06; B64C9/00
Domestic Patent References:
| WO2005108781A1 | 2005-11-17 | |||
| WO2008144938A1 | 2008-12-04 |
Foreign References:
| RU2005204C1 | 1993-12-30 | |||
| FR2278565A1 | 1976-02-13 | |||
| US0419321A | 1890-01-14 | |||
| US0365133A | 1887-06-21 |
Attorney, Agent or Firm:
LOUWAARD, Jan-Willem Paul (Sweelinckplein 1 GK The Hague, Pays-Bas, NL)
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