Variable vane stabilizer

Patent metadata

Field	Value
Publication number	US-10352186-B2
Application number	US-201615004709-A
Country	US
Kind code	B2
Filing date	Jan 22, 2016
Priority date	Jan 22, 2016
Publication date	Jul 16, 2019
Grant date	Jul 16, 2019

Abstract

A variable vane stabilizer is disclosed. One or more variable vane stabilizer may be interconnected between/among two or more vanes of a gas turbine engine in order to fix the angle of attack of the vanes.

First claim

The invention claimed is:

1. A variable vane stabilizer comprising:
a first nearest neighbor attachment configured to connect to a first adjacent variable vane stabilizer, the first nearest neighbor attachment comprising:
a reciprocal plane tang comprising a tang extending circumferentially outward from the variable vane stabilizer, and
a first slip channel disposed axially through the tang and configured to permit insertion of a first fastener;

a second nearest neighbor attachment being circumferentially adjacent to the first nearest neighbor attachment configured to connect to a second adjacent variable vane stabilizer, the second nearest neighbor attachment comprising:
a first reciprocal plane fork and a second reciprocal plane fork extending circumferentially outward from the variable vane stabilizer; and
a second slip channel disposed axially through each of the first reciprocal plane fork and the second reciprocal plane fork and configured to permit insertion of a second fastener;

a circumferential extension member disposed between the first nearest neighbor attachment and the second nearest neighbor attachment and spacing apart the first nearest neighbor attachment and the second nearest neighbor attachment; and
a vane stem interface configured to attach the variable vane stabilizer to a vane wherein an fourth reciprocal plane fork angle of attack of the vane is fixed.

2. The variable vane stabilizer according to claim 1 , wherein the vane stem interface comprises an axial keyed channel extending axially through a portion of the variable vane stabilizer and configured to receive a portion of the vane.

3. The variable vane stabilizer according to claim 1 ,
wherein the circumferential extension member comprises:
a constrained flex member comprising a portion of the first reciprocal plane fork and a portion of the second reciprocal plane fork each configured to permit flexing of the variable vane stabilizer.

4. A method of variable vane stabilizer installation comprises:
attaching a first variable vane stabilizer to a first vane, the first variable vane stabilizer comprising a first slip channel extending axially through a first plane tang;
attaching a second variable vane stabilizer to a second vane adjacent to the first vane, the second variable vane stabilizer comprising a second slip channel extending axially through a first reciprocal plane fork and a second reciprocal plane fork and a third slip channel extending axially through a second plane tang;
attaching a third variable vane stabilizer to a third vane adjacent to the second vane, the third variable vane stabilizer comprising a fourth slip channel extending axially through a third reciprocal plane fork and a fourth reciprocal plane fork;
connecting, by extending a first fastener axially through the first slip channel and the second slip channel, the first variable vane stabilizer to the second variable vane stabilizer; and
connecting, by extending a second fastener axially through the third slip channel and the fourth slip channel, the second variable vane stabilizer to the third variable vane stabilizer.

5. The method of variable vane stabilizer installation according to claim 4 ,
wherein the first vane has a first angle of attack,
wherein the second vane has a second angle of attack,
wherein the third vane has a third angle of attack, and
wherein the first, second, and the third angle of attack are substantially the same.

Assignees

• United Technologies Corp

Inventors

• Walker Herbert L
• Little Jonathan D
• Subramanya Manjunath
• Boyer Mark
• Pudvah Bernard W

Classifications

• F04D29/542

  Bladed diffusers (fixing blades to stators F01D9/042) · CPC title

• F05D2260/50

  Kinematic linkage, i.e. transmission of position · CPC title

• F01D9/041

  using blades (F01D5/148 takes precedence) · CPC title

• F05D2230/60

  Assembly methods · 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