Turbine engine case attachment and a method of using the same

Patent metadata

Field	Value
Publication number	US-2016201510-A1
Application number	US-201514874049-A
Country	US
Kind code	A1
Filing date	Oct 2, 2015
Priority date	Dec 4, 2014
Publication date	Jul 14, 2016
Grant date	—

Abstract

The present disclosure relates generally to a turbine engine case assembly, the turbine engine case assembly including a fan case including an outer frame encircling an axis, the outer frame including an outer frame exterior surface and an outer frame interior surface, at least two mounts disposed on the outer frame exterior surface, wherein the at least two mounts are circumferentially spaced along the outer frame exterior surface, and a compliant attachment device operably coupled to the at least two mounts.

First claim

What is claimed is:

1 . A turbine engine case assembly comprising:
a fan case including an outer frame encircling an axis, the outer frame including an outer frame exterior surface and an outer frame interior surface; at least two mounts disposed on the outer frame exterior surface, wherein the at least two mounts are circumferentially spaced along the outer frame exterior surface; and a compliant attachment device operably coupled to the at least two mounts.

2 . The turbine engine case assembly of claim 1 , wherein the compliant attachment device comprises a spring.

3 . The turbine engine case assembly of claim 2 , wherein the spring comprises a leaf spring.

4 . The turbine engine case assembly of claim 1 , wherein the compliant attachment device is frangible.

5 . The turbine engine case assembly of claim 1 further comprising:
a center frame encircling the axis, wherein the center frame is positioned radially inward from the outer frame; and
a plurality of struts, each coupled at a first end to the center frame, and at a second end to the outer frame interior surface.

6 . A gas turbine engine comprising
a fan section; a low pressure compressor; and a turbine engine case assembly disposed aft the fan section; wherein the turbine engine case assembly comprises:
an outer frame encircling an axis, the outer frame including an outer frame exterior surface and an outer frame interior surface;
at least two mounts operably coupled to the outer frame exterior surface, wherein the at least two mounts are circumferentially spaced along the outer frame surface; and
a compliant attachment device operably coupled to the at least two mounts.

7 . The gas turbine engine of claim 6 , wherein the compliant attachment device comprises a spring.

8 . The gas turbine engine of claim 7 , wherein the spring comprises a leaf spring.

9 . The gas turbine engine of claim 6 , wherein the compliant attachment device is frangible.

10 . The gas turbine engine of claim 6 , wherein the turbine engine case assembly further comprises:
a center frame encircling the axis, wherein the center frame is positioned radially inward from the outer frame; and a plurality of struts, each coupled at a first end to the center frame, and at a second end to the outer frame interior surface.

11 . A method of reducing load transfer from a turbine engine case to a portion of an air frame, the method comprising:
securing a compliant attachment device to a turbine engine case to create a turbine engine case assembly; and securing the turbine engine case assembly to a portion of the air frame.

12 . The method of claim 11 , wherein the turbine engine case comprises:
an outer frame encircling an axis, the outer frame including an outer frame exterior surface and an outer frame interior surface; at least two mounts disposed on the outer frame exterior surface, wherein the at least two mounts are circumferentially spaced along the outer frame exterior surface.

13 . The method of claim 12 , wherein securing the compliant attachment device to the turbine engine case comprises:
coupling the compliant attachment device between the at least two mounts disposed on the outer surface of the fan case.

14 . The method of claim 11 , wherein the compliant attachment device comprises a spring.

15 . The method of claim 14 , wherein the spring comprises a leaf spring.

16 . The method of claim 11 , wherein the compliant attachment device is frangible.

Assignees

• United Technologies Corp

Inventors

• Roach James T
• Lussier Darin S

Classifications

• F05D2240/90

  Mounting on supporting structures or systems · CPC title

• F01D21/045

  special arrangements in stators or in rotors dealing with breaking-off of part of rotor · CPC title

• F05D2260/311

  of the frangible or shear type · CPC title

• F02C7/20 Primary

  Mounting or supporting of plant; Accommodating heat expansion or creep · CPC title

• F01D25/28

  Supporting or mounting arrangements, e.g. for turbine casing · CPC title