Wind turbine
A wind turbine assembly including a rotor body is described having mounted thereon a plurality of rotor blades, wherein each of the rotor blades is joined at an inner extremity the blade stem projection extending interiorly into the rotor body and secured there within to the rotor body by torsional- and axial-shock damping connection means, wherein each blade stem projection comprises a hollow cylindrical housing defining a central longitudinal axis therein, with a support member interiorly disposed in the housing at an intermediate position along its axis and fixedly secured to the housing, a shaft fixedly secured at one end thereof to the rotor body and coupled at its other end with the support member in a manner allowing limited axial and rotational movement of the housing relative to the rotor body, and a longitudinally outwardly biasing means between the support member and the rotor body, extending along the axis of the housing and outwardly abuttingly biased against the support member, whereby the biasing means provides torsional and axial shock damping to the rotor blade. The wind turbine assembly includes a nacelle to which the rotor body is coupled for rotation with respect to the nacelle, and a tower having an upper portion to which the nacelle is secured by coupling means, and a lower portion positionable on a support body, the tower upper portion including a cylindrical member at an upper end of the tower, an oarlock connector joined to the bottom stem portion; a pitch biasing and damping member interconnecting the nacelle and the oarlock connector, for pitch damping of the nacelle; and yaw biasing and damping means connecting the oarlock and upper portion of the tower, whereby the pitch damping/biasing member and the yaw biasing and damping means bias the rotor body and nacelle to a selected base position in relation to the tower, and dampen pitch and yaw displacements from said base position.
- Assignee:
- IMS; EDB-93-089092
- Patent Number(s):
- US 5213470; A
- Application Number:
- PPN: US 7-746766
- OSTI ID:
- 6360164
- Resource Relation:
- Patent File Date: 16 Aug 1991
- Country of Publication:
- United States
- Language:
- English
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