Compliant intermediate component of a gas turbine engine

Patent metadata

Field	Value
Publication number	US-9593596-B2
Application number	US-201314142754-A
Country	US
Kind code	B2
Filing date	Dec 28, 2013
Priority date	Mar 11, 2013
Publication date	Mar 14, 2017
Grant date	Mar 14, 2017

Abstract

One aspect of present application provides an intermediate structure in a gas turbine engine. The intermediate structure is positioned between a first component and another component. The first component may be a composite component. The components may be interlocking. The intermediate structure may be load bearing. Also disclosed is a method using the intermediate structure.

First claim

What is claimed is:

1. An apparatus comprising:
a first gas turbine engine component structured for use in a gas turbine engine and having a first mating portion;
a second gas turbine engine component having a second mating portion formed to receive within it the first mating portion of the first component to interlockingly secure the first component for use during operation of the gas turbine engine; and
a load bearing intermediate component positioned between the first mating portion of the first component and the second mating portion of the second component, the load bearing intermediate component including:
a main body having a portion configured to bear a loading imparted by contact between the first mating portion and the second mating portion, the main body captured on one of the first mating portion and the second mating portion through a plurality of finger portions extending from the main body,
wherein the plurality of finger portions each contact the second mating portion of the second gas turbine engine component at a different location and the plurality of finger portions includes a first finger portion that contacts the second component at a first location, a second finger portion that contacts the second component at a second location spaced from the first location in a circumferential direction, and a third finger portion that contacts the second component at a third location spaced discreetly from the first location in both the circumferential direction and an axial direction.

2. The apparatus of claim 1 , wherein the first gas turbine engine component has a different coefficient of thermal expansion than a coefficient of thermal expansion of the second gas turbine engine component.

3. The apparatus of claim 2 , wherein the first gas turbine engine component is a ceramic matrix composite, wherein the portion of the main body is curved, and wherein the curved portion of the main body bears a loading imparted by contact between an arcuate portion of the first mating portion and an arcuate portion of the second mating portion.

4. The apparatus of claim 3 , wherein the load bearing intermediate component is made of sheet metal.

5. The apparatus of claim 2 , wherein one of the plurality of finger portions includes a shape that permits a seal to be located between the one of the plurality of finger portions and the first gas turbine engine component.

6. The apparatus of claim 2 , wherein the second gas turbine engine component includes a recess into which the load bearing intermediate component is situated.

7. The apparatus of claim 1 , wherein the load bearing intermediate component positioned between the first mating portion of the first component and the second mating portion of the second component defines a load path between the first component and the second component.

8. An apparatus comprising:
a gas turbine engine construction that includes a first component having a first curved portion that includes a first coefficient of thermal expansion, a second component having a second curved portion that includes a second coefficient of thermal expansion different from the first coefficient of thermal expansion, and an intermediate component independent of the first component and second component and located between the first curved portion and second curved portion, the intermediate component structured to take up bearing loads between the first component and the second component when a temperature of the gas turbine engine construction changes resulting in a change in relative orientation of the first curved portion and second curved portion,
wherein the intermediate component includes a main body and a first finger portion that extends from the main body, a second finger portion that extends from the main body and spaced from the first finger portion in a circumferential direction, and a third finger portion that extends from the main body and is spaced from the first finger portion in both circumferential and axial directions, and wherein the first finger portion, the second finger portion, and the third finger portion engage the second component to block movement of the second component relative to the first component in a radial direction.

9. The apparatus of claim 8 , wherein the first finger portion, the second finger portion, and the third finger portion of the intermediate component wrap around the first component to discourage removal of the intermediate component from the first component and wherein the first component is a composite construction.

10. The apparatus of claim 9 , wherein the intermediate component is one of a metal, a composite, or a plastic material.

11. The apparatus of claim 9 , wherein the second component includes a recess into which the intermediate component is located.

12. The apparatus of claim 8 , wherein the intermediate component includes a configuration that provides for passage of cooling air between the first component and the second component.

13. The apparatus of claim 8 , wherein a thickness of the intermediate component varies along a dimension of the intermediate component.

14. A method comprising:
orienting a compliant member in a location relative to a ceramic matrix composite component that would be at an interface between the ceramic matrix composite component and a gas turbine engine load path component when the components are coupled together;
positioning an extension of the compliant member around a curved feature of one of the ceramic matrix composite component and the gas turbine engine load path component; and
engaging the ceramic matrix composite component with the gas turbine engine load path component to form a coupled structure that includes the compliant member disposed therebetween,
wherein the compliant member includes a main body and a first finger portion that extends from the main body, a second finger portion that extends from the main body and is spaced from the first finger portion in a circumferential direction, and a third finger portion that extends from the main body and is spaced from the first finger portion in both circumferential and axial directions, and wherein the first finger portion, the second finger portion, and the third finger portion engage one of the ceramic matrix composite component and the gas turbine load path component to block movement of the one of the ceramic matrix composite component and the gas turbine load path component relative to the other of the ceramic matrix composite component and the gas turbine load path component in a radial direction.

15. The method of claim 14 , which further includes positioning the compliant member in a recess of one of the ceramic matrix composite component and the gas turbine engine load path component, and wherein the recess is located within the gas turbine engine load path component, and which further includes providing a cooling gas path as a result of the engaging.

16. The method of claim 14 , wherein the positioning includes positioning the first finger portion, the second finger portion, and the third finger portion of the compliant member around a plurality of curved portions of one of the ceramic matrix composite component and the gas turbine engine load path component.

17. The method of claim 16 , wherein the compliant member includes a shape that permits a seal to be positioned between it and one of the ceramic matrix composite component and the gas turbine engine load path component.

18. The method of claim 16 , wherein the compliant member includes a shape having a non-constant thickness along a dimension

Assignees

• Rolls Royce Corp

Inventors

• Uskert Richard C
• Thomas David J
• Chamberlain Adam L

Classifications

• F04D29/023

  especially adapted for elastic fluid pumps · CPC title

• F01D25/26 Primary

  Double casings; Measures against temperature strain in casings · CPC title

• F04D29/322

  Blade mountings · CPC title

• F01D11/006

  Sealing the gap between rotor blades or blades and rotor · CPC title

• F05D2300/6033

  Ceramic matrix composites [CMC] · CPC title