Gas turbine engine article with branched flange
An airfoil for a gas turbine engine includes a fiber-reinforced laminate composite airfoil fairing that defines a platform that has first and second radial sides, an airfoil section that extends off of the first radial side, and a branched flange that extends off of the second radial side. The branched flange includes a trunk that radially extends off of the second radial side and at least one branch that extends off of the trunk.
1. An airfoil for a gas turbine engine, the airfoil comprising:
a fiber-reinforced laminate composite airfoil fairing defining a platform having first and second radial sides, an airfoil section extending off of the first radial side, and a branched flange extending off of the second radial side,
the branched flange including a trunk radially extending off of the second radial side and at least one branch extending off of the trunk, and
the platform including an axially-facing side, and the at least one branch overhanging the axially-facing side.
2. The airfoil as recited in claim 1 , wherein the at least one branch includes first and second branches.
3. The airfoil as recited in claim 1 , wherein the first and second branches extend in opposite directions off of the trunk.
4. The airfoil as recited in claim 1 , wherein the trunk includes an elbow at which the trunk turns from a first trunk section to a second trunk section, the second trunk section and the at least one branch define a cavity radially there between, and there is a seal disposed in the cavity.
5. The airfoil as recited in claim 1 , wherein the branched flange includes a tertiary branch that extends off of the at least one branch.
6. The airfoil as recited in claim 1 , wherein the at least one branch is orthogonal to the trunk.
7. The airfoil as recited in claim 1 , further comprising a seal supported by the at least one branch.
8. The airfoil as recited in claim 7 , wherein the at least one branch defines a pocket and the seal is disposed in the pocket.
9. The airfoil as recited in claim 1 , wherein the at least one branch extends at an oblique angle to the trunk.
10. The airfoil as recited in claim 1 , wherein the trunk has a base at second radial side and a free tip end distal from the base, and the at least one branch extends off of the trunk at a location intermediate of the base and the free tip end.
11. The airfoil as recited in claim 1 , wherein the laminated composite airfoil fairing is a ceramic matrix composite.
12. A gas turbine engine comprising:
a compressor section;
a combustor in fluid communication with the compressor section; and
a turbine section in fluid communication with the combustor, the turbine section having airfoils disposed about a central axis of the gas turbine engine, each of the airfoils includes:
a ceramic matrix composite airfoil fairing defining a platform having first and second radial sides, an airfoil section extending off of the first radial side, and a branched flange extending off of the second radial side,
the branched flange including a trunk radially extending off of the second radial side and at least one branch extending off of the trunk, and
the platform including an axially-facing side, the at least one branch overhanging the axially-facing side.
13. The gas turbine engine as recited in claim 12 , wherein the trunk includes an elbow at which the trunk turns from a first trunk section to a second trunk section, the second trunk section and the at least one branch define a cavity radially there between, and there is a seal disposed in the cavity.
14. The gas turbine engine as recited in claim 12 , wherein the at least one branch defines a pocket and there is a seal is disposed in the pocket.
15. An article for a gas turbine engine, the article comprising:
a fiber-reinforced laminate composite body defining a core gas path side and an opposed, non-core gas path side, and a branched flange extending off of the non-core gas path side,
the branched flange including a trunk radially extending off of the second radial side and at least one branch extending off of the trunk, and
the branched flange including a tertiary branch extending off of the at least one branch.
16. The article as recited in claim 15 , wherein the at least one branch includes first and second branches that extend in opposite directions off of the trunk.
17. The article as recited in claim 15 , wherein the trunk includes an elbow at which the trunk turns from a first trunk section to a second trunk section, the second trunk section and the at least one branch define a cavity radially there between, and there is a seal disposed in the cavity.
18. The article as recited in claim 15 , wherein the at least one branch defines a pocket and there is a seal is disposed in the pocket.