Advanced high efficiency mainsail
AssigneeDonald Butler Curchod
InventorDonald Butler Curchod
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Abstract
A sail comprising a rotating flexible mast sleeve wrap surrounding the mast and attached to a sail track for controlling the movement of the sail. The sleeve assembly is slotted to allow for partial rotation of the sleeve wrap, the sail track and the sail, so that the sleeve wrap, the sail track and the sail rotate to form an aerodynamic shape on the lee side of the rotating flexible mast reducing aerodynamic losses.
Claims9
A sail attached indirectly to a fixed mast, the sail comprising:
- a rotating flexible mast sleeve wrap surrounding the mast and attached to a sail track for controlling the movement of the sail, wherein the sleeve assembly is slotted to allow for partial rotation of the sleeve wrap, the sail track and the sail, so that the sleeve wrap, the sail track and the sail can rotate to form an aerodynamic shape on the lee side of the rotating flexible mast reducing aerodynamic losses.
A sailing boat with a mast and boom, wherein the majority of the open space between the boom and deck or coach house has a skirt extending horizontally from the mast to more than half-way to the mainsail end or clew, wherein the skirt reduces the majority of the otherwise loss of efficiency and drive under a traditional boom.
Dependencies are inferred from the claim text.