20130183160 | WIND GENERATOR HUB ASSEMBLY WITH HYBRID SAIL BLADES - A high solidity hub assembly with lightweight, high efficiency, hybrid airfoil/sail blades. The hub includes at three to eight, blade mounting surfaces each with a radially extending blade. The blades are identical and wedge shaped and evenly distributed radially around the hub. Gaps are created between each blade. Each blade has an airfoil profile with a curved outer skin layer with a large curved leading edge and a flat trailing edge, similar to an airfoil. The outer skin layer is secured along its leading edge and removeably attached along its trailing edge to a lightweight internal frame. Each blade includes a transversely aligned end cap with optional louvers. The blades are oriented so that their outer skin layers face downwind and rotate in the direction of their leading edges. When wind flows against the inside surface of the skin layers, the blades act as a sail to produce thrust. | 07-18-2013 |