Rotor blade for a wind energy turbine
US7470114B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Jul 27, 2006 |
| Grant date | Dec 30, 2008 |
| Priority date | — |
| Expiry date | May 29, 2027 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S416/50
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
The rotor blade for a wind energy turbine comprising a longitudinal shell defining a root to be connected to a hub of a rotor, a tip, a forward edge and a rearward edge, the shell having a spar including two spar caps connected via at least one shear web arranged between the forward and rearward edges of the shell and extending in the longitudinal direction of the shell, and a structural damping system arranged within the shell and having a pendulum including a dumped sandwich beam and a mass element located at one end of the beam. The beam comprises a sandwich structure including at least three layers comprising at least one damping middle layer arranged between and connected to outer layers of an elastic material. The sandwich beam is connected to the at least one shear web in a cantilevered manner such that the mass element is proximal to the tip of the shell and the beam can be oscillated in a direction towards and away from the forward and rearward edges of the shell.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.