Integrated seal and wear liner
A blade outer air seal assembly includes a support structure. A blade outer air seal extends circumferentially about an axis and is mounted in the support structure. The blade outer air seal has a lip at an axial end engaged with the support structure. A seal structure has a seal portion and a wear liner portion joined by a radially extending portion. The seal portion is radially outward of the lip and the wear liner is radially inward of the lip.
1. A blade outer air seal assembly, comprising:
a support structure;
a blade outer air seal extending circumferentially about an axis and mounted in the support structure, the blade outer air seal having a lip at an axial end engaged with the support structure;
a seal structure having a seal portion and a wear liner portion joined by a radially extending portion, wherein the seal portion is radially outward of the lip and the wear liner is radially inward of the lip, wherein the wear liner portion is flat in an axial direction and arranged between the support structure and the lip, and the wear liner portion is in contact with the support structure and the lip.
2. The blade outer air seal assembly of claim 1 , wherein the support structure has a radially innermost portion configured to engage the lip of the blade outer air seal.
3. The blade outer air seal assembly of claim 1 , wherein the seal portion has a wavy shape that is compressed between the support structure and the lip.
4. The blade outer air seal assembly of claim 3 , wherein the seal portion has a relaxed height that is greater than an installed height when the seal portion is installed between the support structure and the blade outer air seal.
5. The blade outer air seal assembly of claim 3 , wherein the seal portion has at least two radially outermost points that are in contact with the support structure.
6. The blade outer air seal assembly of claim 1 , wherein the radially extending portion is positioned aft of the blade outer air seal.
7. The blade outer air seal assembly of claim 6 , wherein the seal portion extends forward from the radially extending portion a first distance that is greater than a second distance that the wear liner extends forward from the radially extending portion.
8. The blade outer air seal assembly of claim 1 , wherein the radially extending portion is generally flat and engages a surface of the support structure.
9. The blade outer air seal assembly of claim 1 , wherein a flow guide is arranged radially outward of the blade outer air seal.
10. The blade outer air seal assembly of claim 9 , wherein the seal portion is arranged between the support structure and the flow guide.
11. The blade outer air seal assembly of claim 10 , wherein the seal portion is in contact with the flow guide.
12. The blade outer air seal assembly of claim 11 , wherein the seal portion has two radially outermost points that are in contact with the support structure and an inner point in contact with the flow guide between the two radially outermost points.
13. The blade outer air seal assembly of claim 1 , wherein the blade outer air seal is a monolithic ceramic material.
14. The blade outer air seal assembly of claim 1 , wherein the blade outer air seal is a ceramic matrix composite material.
15. The blade outer air seal assembly of claim 1 , wherein the seal structure is formed from sheet metal.
16. The blade outer air seal assembly of claim 1 , wherein the seal structure is a cobalt alloy.
17. A blade outer air seal assembly, comprising:
a support structure;
a blade outer air seal extending circumferentially about an axis and mounted in the support structure, the blade outer air seal having a lip at an axial end engaged with the support structure;
a seal structure having a seal portion and a wear liner portion joined by a radially extending portion, wherein the seal portion is radially outward of the lip and the wear liner is radially inward of the lip; and
a flow guide arranged radially outward of the blade outer air seal, the seal portion is arranged between the support structure and the flow guide and in contact with the flow guide, wherein the blade outer air seal has a hook near a second axial end and the flow guide has a flow guide hook and flow guide lip, the flow guide hook engages with the blade outer air seal hook and the flow guide lip engages with the blade outer air seal lip.
18. The blade outer air seal assembly of claim 17 , wherein a spacer is positioned between the flow guide and the blade outer air seal to maintain a gap between the flow guide and the blade outer air seal.