US2009324416A1PendingUtilityA1

Wind turbine blades with multiple curvatures

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Assignee: GE WIND ENERGY GMBHPriority: Jun 30, 2008Filed: Jun 30, 2008Published: Dec 31, 2009
Est. expiryJun 30, 2028(~1.9 yrs left)· nominal 20-yr term from priority
Inventors:Laurent Bonnet
F05B 2250/71Y02E10/72F03D 1/0633F05B 2250/70
40
PatentIndex Score
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Claims

Abstract

A blade for a wind turbine includes a chord plane having one spanwise portion with a first curvature and another spanwise portion with a second curvature that is different from the first curvature.

Claims

exact text as granted — not AI-modified
1 . A blade for a wind turbine, comprising a chord plane having one spanwise portion with a first curvature and another spanwise portion with a second curvature that is different from the first curvature. 
     
     
         2 . The blade recited in  claim 1 , wherein the first curvature comprises a fixed radius of curvature. 
     
     
         3 . The blade recited in  claim 2 , wherein the second curvature comprises a fixed radius of curvature. 
     
     
         4 . The blade recited in  claim 3 , wherein the first and second fixed radii of curvature are arranged on opposite sides of the chord plane. 
     
     
         5 . The blade recited in  claim 1 , further comprising a shear web plane having a portion with a third curvature. 
     
     
         6 . The blade recited in  claim 5 , further comprising the shear web plane having another portion with a fourth curvature. 
     
     
         7 . The blade recited in  claim 5 , wherein the third curvature comprises a fixed radius of curvature. 
     
     
         8 . The blade recited in  claim 6 , wherein the fourth curvature comprises a fixed radius of curvature. 
     
     
         9 . The blade recited in  claim 7 , wherein the first curvature comprises a fixed radius of curvature. 
     
     
         10 . The blade recited in  claim 7 , wherein the second curvature comprises a fixed radius of curvature. 
     
     
         11 . The blade recited in  claim 9 , wherein the second curvature comprises a fixed radius of curvature. 
     
     
         12 . The blade recited in  claim 8 , wherein the first curvature comprises a fixed radius of curvature. 
     
     
         13 . The blade recited in  claim 8 , wherein the second curvature comprises a fixed radius of curvature. 
     
     
         14 . The blade recited in  claim 12 , wherein the second curvature comprises a fixed radius of curvature. 
     
     
         15 . A blade for a wind turbine, comprising a shear web plane having one spanwise portion with a first curvature and another spanwise portion with a second curvature that is different from the first curvature. 
     
     
         16 . The blade recited in  claim 15 , wherein the first curvature comprises a fixed radius of curvature. 
     
     
         17 . The blade recited in  claim 16 , wherein the second curvature comprises a fixed radius of curvature. 
     
     
         18 . The blade recited in  claim 17 , wherein the first and second fixed radii of curvature are arranged on opposite sides of the chord plane. 
     
     
         19 . The blade recited in  claim 15 , further comprising a chord plane having a portion with a third curvature. 
     
     
         20 . The blade recited in  claim 18 , wherein the third curvature comprises a fixed radius of curvature.

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