Patent ID: 8647061
Filing Date: 2014-02-11
Classification: F03D,F05B,Y02E

Abstract:
1. A wind turbine system comprising: a shaft; a rotor for driving the shaft, the rotor comprising a first blade engaged to the shaft by a hub, wherein the first blade has a degree of freedom to pivot relative to the shaft, and wherein a first teeter angle is defined between an instantaneous position of the first blade and a time-averaged plane of rotation of the first blade; and a first fluidic teeter control assembly engaged between the rotor and the shaft for selectively providing a first dynamic teeter restraining force as a function of the first teeter angle and a fluidic resistance, wherein the first dynamic restraining force is relatively low when the first teeter angle is within a first teeter operation range, and wherein the first dynamic restraining force is higher when the first teeter angle is outside the first teeter operation range, the first fluidic teeter control assembly comprising: