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US 9,017,036 B2Granted
High order shaped curve region for an airfoil
AssigneeUnited Technologies Corporation
InventorJoseph C. Straccia
Life of this patent
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Abstract
A turbomachine blade with a localized dihedral feature has a high order polynomial shaped curve region.
Claims31
A turbomachine blade comprising:
- an airfoil extending along a spanwise stacking distribution between a root and a tip region, said airfoil including a chordline extending between a leading edge and a trailing edge;
- and
- a dihedral feature of the spanwise stacking distribution, wherein said dihedral feature is generally localized at an end of the spanwise stacking distribution, said dihedral feature being further defined by a curved region of the spanwise stacking distribution of said airfoil, a shape of said curved region being defined by a high order polynomial.
A turbine machine comprising:
- a plurality of airfoils wherein each of said airfoils extends along a spanwise stacking distribution between a root and a tip region, said airfoil including a chordline extending from a leading edge and a trailing edge;
- and
- a dihedral feature of the spanwise stacking distribution, wherein said dihedral feature is generally localized at an end of the spanwise stacking distribution, said dihedral feature being further defined by a curved region of the spanwise stacking distribution of said airfoil, a shape of said curved region being defined by a high order polynomial.
Dependencies are inferred from the claim text.