VARIABLE VANE DRIVE SYSTEM - UNITED TECHNOLOGIES CORP

Title:

VARIABLE VANE DRIVE SYSTEM

Document Type and Number:

WIPO Patent Application WO/2014/189568

Kind Code:

A3

Abstract:

An example section of a gas turbine engine includes a plurality of variable vanes circumferentially disposed about an engine axis, a first moveable annular ring disposed on an upstream side of the variable vanes, a second movable annular ring disposed on a downstream side of the variable vanes, and a plurality of vane arms, each including a first end secured to the first annular ring and a second end secured to the second annular ring. Movement of the first and second annular rings moves the vane arms, thereby actuating the plurality of variable vanes. An example variable vane assembly includes a vane arm including a portion that engages a variable vane, a first end configured to be secured to a first movable annular ring, and a second end configured to be secured to a second movable annular ring. Movement of the first and second annular rings moves the vane arms, thereby actuating the plurality of variable vanes. An example method of actuating a variable vane assembly includes the steps of securing a variable vane to a vane arm, the vane arm secured to a first movable annular ring at a first end and a second movable annular ring at a second end, and moving at least one of the first and second rings to move the vane arm.

Inventors:

DO LOGAN H (US)
SYKES RICHARD L (US)

Application Number:

PCT/US2014/016849

Publication Date:

February 19, 2015

Filing Date:

February 18, 2014

Export Citation:

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Assignee:

UNITED TECHNOLOGIES CORP (US)

International Classes:

F01D17/16; F01D9/02; F01D9/04; F02C9/22

Foreign References:

US20090226305A1	2009-09-10
US5549448A	1996-08-27
US20070068303A1	2007-03-29
US20120230813A1	2012-09-13
US20130028716A1	2013-01-31

Other References: