Gas turbine engine variable stator vane assembly

Patent metadata

Field	Value
Publication number	US-9062560-B2
Application number	US-201213418451-A
Country	US
Kind code	B2
Filing date	Mar 13, 2012
Priority date	Mar 13, 2012
Publication date	Jun 23, 2015
Grant date	Jun 23, 2015

Abstract

A variable stator vane assembly for a gas turbine engine includes a variable stator vane and a non-structural fairing on the variable stator vane.

First claim

What is claimed:

1. A variable stator vane assembly for a gas turbine engine comprising:
a variable stator vane including a platform adjacent to an airfoil, said airfoil comprises a leading edge and a trailing edge extending beyond an outer circumference of said platform;
a fillet adjacent said platform, said platform includes a flat and said fillet extends from said trailing edge to said flat; and
a fairing covering said fillet, wherein said fairing comprises a generally cylindrical member with an airfoil shaped aperture and a tab, said tab configured to interface with said flat.

2. The assembly as recited in claim 1 , wherein said fairing surrounds said airfoil.

3. The assembly as recited in claim 1 , further comprising a trunnion which extends from said platform.

4. The assembly as recited in claim 3 , wherein said fairing surrounds said airfoil opposite said trunnion.

5. The assembly as recited in claim 1 , wherein said airfoil extends beyond said platform.

6. The assembly as recited in claim 1 , further comprising a metal alloy sheath on said fairing.

7. A variable stator vane assembly for a gas turbine engine comprising:
a first platform, said first platform includes a flat;
a second platform;
an airfoil between said first platform and said second platform along an axis of rotation, said airfoil comprises a leading edge and a trailing edge extending beyond an outer circumference of said first platform;
a fillet adjacent said first platform, said fillet extends from said trailing edge to said flat; and
a fairing which surrounds said airfoil adjacent to said first platform and covers said fillet, wherein said fairing comprises a generally cylindrical member with an airfoil shaped aperture and a tab, said tab configured to interface with said flat.

8. The assembly as recited in claim 7 , further comprising a first trunnion which extends from said first platform and a second trunnion which extends from said second platform.

9. The assembly as recited in claim 7 , wherein said airfoil extends beyond said first and second platform.

10. The assembly as recited in claim 7 , further comprising a metal alloy sheath on said fairing.

11. A method of manufacturing a variable stator vane assembly for a gas turbine engine comprising:
molding a fairing onto a fillet of a variable stator vane; wherein said fairing comprises a generally cylindrical member with an airfoil shaped aperture and a tab, said tab configured to interface with a flat of an airfoil platform.

12. The method as recited in claim 11 , further comprising: molding the fairing adjacent to a platform of the variable stator vane.

13. The method as recited in claim 11 , further comprising: sheathing one side of the fairing.

14. The assembly as recited in claim 1 , wherein said fairing comprises:
a non-metallic material configured to be formed onto said variable stator vane.

15. The assembly as recited in claim 1 , wherein said fairing is configured to prevent said fillet from blocking fluid flow.

Assignees

• Hayford Richard K
• Dube David P
• United Technologies Corp

Inventors

• Hayford Richard K
• Dube David P

Classifications

• F04D29/563

  specially adapted for elastic fluid pumps · CPC title

• F05D2300/43

  Synthetic polymers, e.g. plastics; Rubber · CPC title

• F01D17/162 Primary

  for axial flow, i.e. the vanes turning around axes which are essentially perpendicular to the rotor centre line (F01D17/167 takes precedence) · CPC title

• F01D11/005

  Sealing means between non relatively rotating elements · CPC title

• Y10T29/49321

  Assembling individual fluid flow interacting members, e.g., blades, vanes, buckets, on rotary support member · CPC title