Title:
SEAL ARRANGEMENT FOR VARIABLE VANE
Document Type and Number:
WIPO Patent Application WO/2012/044951
Kind Code:
A3
Abstract:
A variable vane assembly for a gas turbine engine is disclosed herein. The variable vane assembly includes a vane operable to pivot about a pivot axis. The vane includes a flap portion positionable in a fluid stream for controlling a flow of fluid. The vane also includes a stem portion for mounting the flap portion. The vane also includes a button portion positioned between the flap portion and the stem portion along the pivot axis. The button portion is wider than the stem portion in at least one plane containing the pivot axis. The variable vane assembly also includes a bushing encircling the stem portion and abutting the button portion. The variable vane assembly also includes a labyrinth seal positioned between the bushing and the button portion.
Inventors:
PECK BRIAN (US)
SNYDER BURKE (US)
SNYDER BURKE (US)
Application Number:
PCT/US2011/054256
Publication Date:
June 21, 2012
Filing Date:
September 30, 2011
Export Citation:
Assignee:
ROLLS ROYCE NAM TECH INC (US)
PECK BRIAN (US)
SNYDER BURKE (US)
PECK BRIAN (US)
SNYDER BURKE (US)
International Classes:
F01B25/02
Foreign References:
| US20060045728A1 | 2006-03-02 | |||
| US6413043B1 | 2002-07-02 | |||
| US20040100035A1 | 2004-05-27 | |||
| US4792277A | 1988-12-20 | |||
| US20090060721A1 | 2009-03-05 |
Other References:
See also references of EP 2622178A4
Attorney, Agent or Firm:
STEPHENSON, Mark, T. et al. (One Indiana Square Suite 280, Indianapolis IN, US)
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