| 摘要 |
A rigid or semirigid sailing rig having an airfoil shaped mainsail, hinged at its luff to an airfoil shaped jib pivotable at the hinge axis 25 DEG to either side of the mainsail's centerline to form a continuous airfoil which is smoothly curved on the lee side and relatively flat on the windward side. The airfoil is mounted between two end plates and the entire assembly is rotatable 360 DEG relative to the ship and on an axis of rotation slightly jibward of the center of wind pressure upon the airfoil assembly.
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