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Rotor blade for a wind turbine having aerodynamic feature elements

  • US 7,604,461 B2
  • Filed: 11/17/2005
  • Issued: 10/20/2009
  • Est. Priority Date: 11/17/2005
  • Status: Active Grant
First Claim
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1. A rotor blade for a wind turbine, said rotor blade comprising a first surface having a plurality of first aerodynamic feature elements formed therein and a second surface having a plurality of second aerodynamic feature elements formed therein, said first aerodynamic feature elements influencing an air flow at said first surface during operation of the wind turbine and arranged in a three-dimensional pattern, and wherein said first aerodynamic feature elements in a root region of said blade are larger than said first aerodynamic feature elements in a tip region of said blade by at least 10% in at least one dimension of said first aerodynamic feature elements, said second aerodynamic feature elements influencing an air flow at said second surface and arranged in a two-dimensional pattern, wherein said first aerodynamic feature elements have at least one of a shape, a size, and an arrangement different than at least one of a corresponding shape, size and arrangement of said second aerodynamic feature elements.

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