Fan casing assemblies and method of mounting a cooler to a fan casing

Patent metadata

Field	Value
Publication number	US-10393147-B2
Application number	US-201514807046-A
Country	US
Kind code	B2
Filing date	Jul 23, 2015
Priority date	Jul 23, 2015
Publication date	Aug 27, 2019
Grant date	Aug 27, 2019

Abstract

A fan casing assembly for a turbine engine including a fan casing having a peripheral wall, a surface cooler having a first surface confronting the peripheral wall and forward and aft projections, which are radially spaced from the first surface and located between the peripheral wall and the first surface, and a mounting bracket to mount the surface cooler to the fan casing and a method of mounting a surface cooler to a fan casing of a turbine engine.

First claim

What is claimed is:

1. A fan casing assembly comprising:
an annular fan casing having a peripheral wall and a forward edge and an opposing aft edge and at least one fan casing fastener opening passing through the peripheral wall;
an annular surface cooler having a first surface confronting the peripheral wall and having a forward hook at a forward edge of the annular surface cooler and aft hook at an aft edge of the annular surface cooler, said forward hook and aft hook both extending radially from the first surface and located radially between the peripheral wall and the first surface, the aft hook extending in a forward direction and the forward hook extending in an aft direction such that the forward hook and aft hook form a radial space between the first surface and the forward hook and aft hook; and
a mounting bracket having a body with a first flange at a forward end of the body and an opposing second flange at an aft end of the body and at least one mounting bracket fastener opening aligned with the at least one fan casing fastener opening, and a cover plate located radially between the annular fan casing and the body, each of the body and the cover plate extending continuously between the forward hook and aft hook, wherein the first flange underlies the forward hook in the radial space and the second flange underlies the aft hook in the radial space, wherein the forward hook and aft hook are compressively retained between the respective first flange and second flange and the cover plate, and wherein a fastener extends through the at least one fan casing fastener opening and the at least one mounting bracket fastener opening to retain the annular surface cooler to the annular fan casing.

2. The fan casing assembly of claim 1 , further comprising wear attenuators located between the first flange and forward hook, and between the second flange and aft hook.

3. The fan casing assembly of claim 2 wherein the wear attenuators include a set of C-shaped wear attenuators located about a free end of each of the forward hook and aft hook.

4. The fan casing assembly of claim 3 wherein the wear attenuators are made from PEEK.

5. The fan casing assembly of claim 1 , further comprising C-shaped wear attenuators located about a free end of each of the forward hook and aft hook.

6. The fan casing assembly of claim 1 , further comprising vibration attenuators located between the wear attenuators and the cover plate.

7. The fan casing assembly of claim 1 wherein the body is fixed and extended suspended from the peripheral wall by the fastener.

8. The fan casing assembly of claim 1 wherein:
a) an axial distance between the forward edge of the surface cooler and adjacent hardware is less than 0.135 inches,
b) an axial distance between the aft edge of the surface cooler and adjacent hardware is less than 0.126 inches, and
c) a radial distance between the forward and aft hooks of the surface cooler and the peripheral wall is less than 0.266 inches.

9. A fan casing assembly comprising:
an annular fan casing having a peripheral wall;
an annular surface cooler having a first surface confronting the peripheral wall, and a forward projection formed at a forward edge of the surface cooler, and an aft projection formed at an aft edge of the surface cooler, the forward projection and aft projection extending radially from the first surface forming respective end portions of the forward projection and aft projection located between the peripheral wall and the first surface, the end portion of the aft projection extending in a forward direction and the end portion of the forward projection extending in an aft direction such that the forward projection and aft projection form a radial space between the first surface and the forward projection and aft projection; and
a mounting bracket fixed to and extending from the peripheral wall and compressively retaining the forward projection and aft projection to mount the surface cooler to the fan casing;
wherein the mounting bracket further includes a cover plate and a body with a forward flange and an aft flange extending from the body, the forward flange underlying the forward projection in the radial space and the aft flange underlying the aft projection in the radial space, wherein the forward projection and aft projection are compressively retained between the respective forward flange and aft flange and the cover plate, and wherein the body and the cover plate extend continuously between the forward projection and the aft projection.

10. The fan casing assembly of claim 9 , further comprising wear attenuators located between the forward flange and forward projection, and between the aft flange and the aft projection.

11. The fan casing assembly of claim 10 , further comprising vibration attenuators located between the wear attenuators and the cover plate.

12. The fan casing assembly of claim 10 wherein the wear attenuators include C-shaped wear attenuators located about the respective end portions of the forward projection and aft projection.

13. The fan casing assembly of claim 9 wherein:
a) an axial distance between the forward edge of the surface cooler and adjacent hardware is less than 0.135 inches,
b) an axial distance between the aft edge of the surface cooler and adjacent hardware is less than 0.126 inches and
c) a radial distance between the forward and aft projections of the surface cooler and the peripheral wall is less than 0.266 inches.

Assignees

• Unison Ind Llc

Inventors

• Dreischarf Derek Thomas
• Luschek Bernard Albert
• Hundley Walter Arthur

Classifications

• B64D2033/024

  comprising cooling means · CPC title

• F05D2260/213

  by the provision of a heat exchanger within the cooling circuit · CPC title

• F04D29/60

  Mounting; Assembling; Disassembling {(F04D13/10 takes precedence)} · CPC title

• B64D29/00 Primary

  Power-plant nacelles, fairings or cowlings · CPC title

• F02K3/06

  with front fan · CPC title