Surface cooler support mechanism
A surface heat exchanger is provided which utilizes forward and aft brackets to retain the heat exchanger in position. The surface heat exchanger includes a plurality of core cooling channels as well as fins which are disposed for air flow through the gas turbine engine. The brackets include a low-friction wear material as well as an isolator sheet which provides some spring force on the heat exchanger.
1. A surface cooler support mechanism comprising:
a heat exchanger including:
a body having a plurality of cooling channels;
a plurality of heat exchange fins disposed adjacent to the plurality of cooling channels;
said body having opposed forward and aft cooler ribs extending along lateral edges of said body;
at least one aft bracket having an aft bracket body and a first groove for receiving the aft cooler rib;
at least one forward bracket having a forward bracket body and a second groove for receiving the forward cooler rib;
a material disposed within each of said first groove and said second groove, wherein the coefficient of friction of the material enables the forward and aft cooler ribs aft to slide across one or more surfaces of the first groove or second groove, wherein the material lines the surfaces of the first groove and second groove, and separates the body from the first bracket and second bracket; and
an isolator sheet disposed in at least one of said first groove and said second groove, wherein the isolator sheet is disposed between the material and a surface of the at least one of the first and second grooves.
2. The surface cooler support mechanism of claim 1 , wherein the isolator sheet provides a spring force.
3. The surface cooler support mechanism of claim 2 , wherein the isolator sheet is compressible.
4. The surface cooler support mechanism of claim 3 , wherein the isolator sheet provides damping to militate against cycle fatigue.
5. The surface cooler support mechanism of claim 1 , wherein the first groove and the said second groove each have a support surface.
6. The surface cooler support mechanism of claim 5 , wherein at least one of the support surfaces is substantially parallel to a centerline axis of an engine.
7. The surface cooler support mechanism of claim 5 , wherein at least one of the support surfaces is at an angle to a centerline axis of an engine.
8. The surface cooler support mechanism of claim 1 , wherein the coefficient of friction is the same as the coefficient of friction of a PEEK material.
9. The surface cooler support mechanism of claim 1 , wherein the material includes a PEEK material.
10. The surface cooler support mechanism of claim 8 , wherein the material allows circumferential movement of the forward cooler ribs through the second groove and the aft cooler ribs through the first groove.
11. The surface cooler support mechanism of claim 1 , wherein the forward bracket and the aft bracket are curved circumferentially.
12. The surface cooler support mechanism of claim 1 , wherein the forward bracket and the aft bracket are offset in an axial direction.
13. The surface cooler support mechanism of claim 1 , wherein the forward bracket and the aft bracket are aligned in an axial direction.
14. The surface cooler support mechanism of claim 1 , wherein the forward bracket and the aft bracket are substantially c-shaped.
15. A surface cooler support system, comprising:
a heat exchanger including:
a body having a set of cooling channels;
a set of heat exchange fins adjacent to the set of cooling channels;
a forward and an aft cooler rib extending along opposing lateral edges of the body;
a plurality of circumferentially spaced aft brackets that include an aft bracket body and a first groove adapted to receive the aft cooler rib;
a plurality of circumferentially spaced forward brackets that includes a forward bracket body and a second groove adapted to receive the forward cooler rib;
a friction wear material, disposed in each of the first groove and the second groove, that enables the forward and aft cooler rib to slide relative to one or more surfaces of the first groove or second groove; and
an isolator sheet that is disposed in at least one of the first groove and the second groove.
16. The surface cooler support system of claim 15 , wherein the friction wear material allows circumferential movement of the aft cooler rib through the first groove and the forward cooler rib through the second groove.
17. The surface cooler support system of claim 15 , wherein the first groove and the said second groove include respective support surfaces, and at least one of the support surfaces is at least one of: substantially parallel to a centerline axis of an engine, or at an angle to a centerline axis of the engine.
18. The surface cooler support system of claim 15 , wherein the isolator sheet biases at least one of the forward and the aft cooler ribs.
19. The surface cooler support system of claim 15 , wherein the friction wear material has a friction coefficient that is the same as a friction coefficient of a PEEK material.
20. The surface cooler support system of claim 15 , wherein the friction wear material includes a PEEK material.