Mounting assembly and fan casing assembly

Patent metadata

Field	Value
Publication number	US-2020200087-A1
Application number	US-201816225063-A
Country	US
Kind code	A1
Filing date	Dec 19, 2018
Priority date	Dec 19, 2018
Publication date	Jun 25, 2020
Grant date	—

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 a mounting assembly having a lower portion generally retained between the first surface of the annular surface cooler and the peripheral wall and having a floating body extending through the set of fan casing fastener openings and an upper portion located radially exterior of the annular fan casing and operably coupled to the lower portion.

First claim

What is claimed is:

1 . A mounting assembly, comprising:
a first self-contained assembly, comprising:
a washer having a body defining a first side and a second side and including at least one fastener opening extending through the body from the first side to the second side;
at least one washer including a peripheral lip and a central hub having a fastener opening;
a biasing element located between the second side of the washer and the at least one washer;
at least one bushings having an internally threaded section; and
at least one fastener having a threaded section, the threaded section configured to pass through the at least one fastener opening, the fastener opening, and be retained in the internally threaded section of the at least one bushing and having a length that passed through the at least one bushing and provides for a pre-load force;
at least one second self-contained assembly, comprising:
a boss having a body extending from a first distal surface to a second distal surface, a passage extends through the body from the first distal surface to the second distal surface, at least one seat is defined within the passage; and
a floating body having a shank and a cap extending from an upper portion of the shank, an internally threaded passage extends through the shank and cap;
wherein when the shank is located within the passage, the cap is configured to abut the at least one seat defined within the passage; wherein the threaded section of the at least one fastener can be received and retained in the internally threaded passage of the shank to operably couple the first self-contained assembly and the at least one second self-contained assembly.

2 . The mounting assembly of claim 1 , further comprising a wear attenuator operably coupled to the first side of the washer about the at least one fastener opening.

3 . The mounting assembly of claim 1 wherein the biasing element includes a set of wave springs.

4 . The mounting assembly of claim 1 wherein the washer comprises a pair of spaced fastener openings and the at least one washer comprises two washers, the at least one bushing comprises two bushings, and the at least one fastener comprises two fasteners.

5 . The mounting assembly of claim 4 wherein the at least one second self-contained assembly comprises two second self-contained assemblies.

6 . The mounting assembly of claim 4 , further comprising a wire or cable configured to retain an upper portion of the two fasteners.

7 . The mounting assembly of claim 1 wherein the shank of the floating body is smaller in width than the passage of the boss and the floating body is configured to axially move therein.

8 . The mounting assembly of claim 7 , further comprising a retention washer operably coupled within the passage of the boss and spaced from the cap of the floating body when the cap abuts the at least one seat.

9 . The mounting assembly of claim 7 , further comprising a wear attenuator operably coupled to the second distal surface of the boss.

10 . The mounting assembly of claim 1 wherein the first self-contained assembly is configured to operably couple with two second self-contained assemblies.

11 . A fan casing assembly, comprising:
an annular fan casing having a peripheral wall and a set of fan casing fastener openings passing through the peripheral wall; an annular surface cooler having a first surface confronting the peripheral wall; and a mounting assembly having a lower portion generally retained between the first surface of the annular surface cooler and the peripheral wall and having a floating body extending through the set of fan casing fastener openings and an upper portion located radially exterior of the annular fan casing and operably coupled to the lower portion and wherein the mounting assembly is configured to provide a fixed connection for dynamic loading, a flexible connection for thermal loading, and shifting during installation to allow for tolerance mismatch of the annular fan casing and annular surface cooler.

12 . The fan casing assembly of claim 11 wherein the mounting assembly includes a first self-contained assembly, comprising:
a washer having a body defining a first side facing an exterior of the peripheral wall of the annular fan casing and a second side and including at least one fastener opening extending through the body from the first side to the second side;
at least one washer including a peripheral lip and a central hub having a fastener opening;
a biasing element located between the second side of the washer and the at least one washer;
at least one bushings having an internally threaded section; and
at least one fastener having a threaded section, the threaded section configured to pass through the at least one fastener opening, the fastener opening, and be retained in the internally threaded section of the at least one bushing and having a length that passed through the at least one bushing and provides for a pre-load force; and
at least one second self-contained assembly, comprising:
a boss having a body extending from a first distal surface to a second distal surface, a passage extends through the body from the first distal surface to the second distal surface, at least one seat is defined within the passage, the first distal surface operably coupled to the first surface of the annular surface cooler and; and
a floating body having a shank configured to pass through one of the set of fan casing fastener openings and a cap extending from an upper portion of the shank, an internally threaded passage extends through the shank and cap;
wherein when the shank is located within the passage, the cap is configured to abut the at least one seat defined within the passage;
wherein the threaded section of the at least one fastener can be received and retained in the internally threaded passage of the shank to operably couple the first self-contained assembly and the at least one second self-contained assembly.

13 . The fan casing assembly of claim 12 wherein the at least one second self-contained assembly comprises two second self-contained assemblies.

14 . The fan casing assembly of claim 12 wherein the shank of the floating body is smaller in width than the passage of the boss and the floating body is configured to axially move therein.

15 . The fan casing assembly of claim 12 wherein the biasing element includes a set of wave springs.

16 . The fan casing assembly of claim 12 , further comprising at least one wear attenuator located between at least one of the fan casing and the boss or the fan casing and the first side of the washer.

17 . The fan casing assembly of claim 16 wherein the at least one wear attenuator is a polyether ether ketone wear attenuator.

18 . A method of mounting two components, the method comprising:
placing a first self-contained assembly adjacent a first side of a first component the first self-contained assembly, comprising:
a washer having a body defining a first side and a second side and including at least one fastener opening extending through the body from the first side to the second side;
a set of washers, each washer of the set of washers including a peripheral lip and a central hub having a fastener opening;
a biasing element located between the second side of the washer and each washer of the set of washers;
a bushing having an internally threaded section; and
a fastener having a threaded section, the threaded section configured to pass through the at least one fastener opening, the fastener opening, a

Assignees

• Unison Ind Llc

Inventors

• Luschek Bernard Albert
• Mcqueen Dennis Alan
• Dreischarf Derek Thomas
• Storage Michael Ralph

Classifications

• F01D25/243 Primary

  Flange connections; Bolting arrangements (F01D25/265 takes precedence) · CPC title

• Y02T50/60

  Efficient propulsion technologies, e.g. for aircraft · CPC title

• F05D2260/213

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

• F02C7/32

  Arrangement, mounting, or driving, of auxiliaries · CPC title

• F02C7/14

  of fluids in the plant {, e.g. lubricant or fuel (F02C7/185 takes precedence)} · CPC title