Slot-forming foil construction for sailing yachts

Details Slot-forming foil construction for sailing yachts Slot-forming foil construction for sailing yachts

1987-08-28

1989-02-14

Basinger, Sherman D.

Ships

Apparatus held by or attached to rider to control sailboard...

Foot strap means

114102, B63H 904

Patent

active

048039390

ABSTRACT:
A slot-forming foil enhances the performance of sailing yachts without jibs. A two-part foil is provided, including a forward foil section and an aft section pivoted to the forward section and having alternate, toggled working positions. In either working position, the two-part assembly forms a foil of principally convex airfoil contours on the leeward side and principally concave airfoil contours on the windward side. The entire assembly forms a slot in conjunction with the luff of a working sail of the vessel, improving performance and tacking angle.

REFERENCES:
patent: 3246335 (1966-04-01), Alvarez-Calderon
patent: 4402277 (1983-09-01), Wainwright
patent: 4437426 (1984-03-01), Latham
patent: 4702186 (1987-10-01), Tiede

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