Blade outer air seal arrangement and method of sealing
A flow path component assembly includes a flow path component having a plurality of segments that extend circumferentially about an axis and mounted in a support structure. At least one of the plurality of segments have a first wall and a second wall that extend radially outward from a base portion. The first wall is axially spaced from the second wall. A coating is on a portion of the first wall and a portion of the second wall. The coating is in contact with a feature on the support structure.
1. A flow path component assembly, comprising:
a flow path component having a plurality of segments extending circumferentially about an axis and mounted in a support structure;
at least one of the plurality of segments having a first wall and a second wall extending radially outward from a base portion, the first wall axially spaced from the second wall;
a coating on a portion of the first wall and a portion of the second wall;
wherein the coating is in contact with a feature on the support structure, and the feature is a rounded protrusion that extends in an axial direction; and
wherein a w-seal contacts the coating.
2. The flow path component assembly of claim 1 , wherein the coating is a silicon metal coating.
3. The flow path component assembly of claim 1 , wherein the coating extends to at least part of the base portion.
4. The flow path component assembly of claim 1 , wherein the feature contacts the second wall.
5. The flow path component assembly of claim 4 , wherein the w-seal contacts the coating on the first wall.
6. The flow path component assembly of claim 1 , wherein a w-seal contacts the coating.
7. The flow path component assembly of claim 6 , wherein the w-seal contacts the coating on the first wall.
8. The flow path component assembly of claim 6 , wherein a seal plate abuts the support structure and contacts the w-seal.
9. The flow path component assembly of claim 1 , wherein the coating is machined to provide a smooth contact area.
10. The flow path component assembly of claim 1 , wherein the coating is machined to provide dimensional control.
11. The flow path component assembly of claim 1 , wherein the at least one segment has a first aperture and the support structure has a second aperture, and a pin extends through the first and second apertures.
12. The flow path component assembly of claim 11 , wherein the at least one segment comprises a ceramic material.
13. The flow path component assembly of claim 1 , wherein the at least one segment is formed from a ceramic material.
14. A method of assembling a flow path component assembly, comprising:
providing a component segment having a first wall and a second wall extending radially outward from a base portion, the first wall axially spaced from the second wall;
applying a coating to a portion of the segment, comprising applying the coating to a portion of the first wall and a portion of the second wall;
machining the coating to form a smooth contact surface; and
mounting the segment to a support structure such that a feature on the support structure contacts the smooth contact surface.
15. The method of claim 14 , wherein the coating is a silicon metal coating.
16. The method of claim 14 , comprising machining the coating on the second wall to form the smooth contact surface and machining the coating on the first wall to form a second smooth contact surface.
17. The method of claim 16 , comprising arranging a w-seal in contact with the second smooth contact surface.
18. The method of claim 16 , wherein the feature is a rounded protrusion that extends in an axial direction.
19. The method of claim 14 , wherein the mounting the segment to the support structure comprises inserting a pin through a first aperture on the segment and a second aperture on the support structure.
20. The method of claim 14 , wherein the segment is formed from a ceramic material.
21. A flow path component assembly, comprising:
a flow path component having a plurality of segments extending circumferentially about an axis and mounted in a support structure;
at least one of the plurality of segments having a first wall and a second wall extending radially outward from a base portion, the first wall axially spaced from the second wall;
a coating on a portion of the first wall and a portion of the second wall;
wherein the coating is in contact with a feature on the support structure, and the feature is a rounded protrusion that extends in an axial direction; and
wherein a seal plate contacts the coating and a w-seal is arranged axially between the support structure and the seal plate.
22. The flow path component assembly of claim 21 , wherein the at least one segment comprises a ceramic material.