초록

An assembly for a gas turbine that engine includes a fan section. A turbine section is configured to drive the fan section. The turbine section includes a rotor hub with a rotor lug. A heat shield engages the rotor lug. The heat shield and the rotor lug define a cooling passage.

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1. An assembly for a gas turbine engine, the assembly comprising: a fan section;a turbine section configured to drive the fan section, the turbine section including a rotor hub with a rotor lug; anda heat shield engaging the rotor lug, wherein the heat shield includes a planar portion with a first l

1. An assembly for a gas turbine engine, the assembly comprising: a fan section;a turbine section configured to drive the fan section, the turbine section including a rotor hub with a rotor lug; anda heat shield engaging the rotor lug, wherein the heat shield includes a planar portion with a first longitudinal hook on a first side of the planar portion and a second longitudinal hook on an opposite second side of the planar portion, a radially inner side of the planar portion directly contacts the rotor lug, and the heat shield and the rotor lug define a cooling passage there between;wherein the rotor lug includes a first rail extending radially upward and outward from a distal end of the rotor lug for engaging the first longitudinal hook and a second rail extending radially upward and outward from distal end of the rotor lug for engaging the second longitudinal hook. 2. The assembly of claim 1, further comprising at least one turbulent structure located on the rotor lug and configured to increase turbulence of a cooling fluid flowing through the cooling passage. 3. The assembly of claim 2, wherein the at least one turbulent structure is integrally formed with the rotor lug. 4. The assembly of claim 1, further comprising a compressor section with a bleed air source for providing a cooling fluid to the cooling passage. 5. The assembly of claim 1, wherein the first longitudinal hook and the second longitudinal hook have a fillet radius between approximately 0.030 inches (0.762 mm) and 0.090 inches (2.286 mm). 6. The assembly of claim 1, wherein the first longitudinal hook and the second longitudinal hook have a non-circular fillet. 7. The assembly of claim 1, wherein the planar portion defines a radially outer side of the cooling passage and the rotor lug defines a radially inner side of the cooling passage. 8. The assembly of claim 1, wherein the first longitudinal hook defines a first fillet extending between a radially inner edge of the first longitudinal hook and a radially outer edge of the first longitudinal hook and the second longitudinal hook defines a second fillet extending between a radially inner edge of the second longitudinal hook and a radially outer edge of the second longitudinal hook. 9. A rotor for a gas turbine engine, comprising: a rotor hub including at least one rotor lug; anda heat shield engaging the at least one rotor lug, wherein the heat shield includes a planar portion with a first longitudinal hook on a first side of the planar portion and a second longitudinal hook on an opposite second side of the planar portion, a radially inner side of the planar portion directly contacts the rotor lug, and the heat shield and the rotor lug define a cooling passage there between;wherein the at least one rotor lug includes a first rail extending radially upward and outward from a distal end of the rotor lug for engaging the first longitudinal hook and a second rail extending radially upward and outward from distal end of the rotor lug for engaging the second longitudinal hook. 10. The rotor of claim 9, further comprising at least one turbulent structure coupled to the lug and configured to increase turbulence of a cooling fluid flowing through the cooling passage. 11. The rotor of claim 10, wherein the at least one turbulent structure is located on at least one of the rotor hub or the heat shield. 12. The rotor of claim 9, wherein the first hook and the second hook have a fillet radius between approximately 0.030 inches (0.762 mm) and 0.090 inches (2.286 mm). 13. The rotor of claim 9, wherein the planar portion defines a radially outer side of the cooling passage and the at least one rotor lug defines a radially inner side of the cooling passage. 14. The rotor of claim 9, wherein the first longitudinal hook defines a first fillet extending between a radially inner edge of the first longitudinal hook and a radially outer edge of the first longitudinal hook and the second longitudinal hook defines a second fillet extending between a radially inner edge of the second longitudinal hook and a radially outer edge of the second longitudinal hook. 15. A method of cooling a rotor hub, comprising: a) shielding heat from a rotor hub with at least one rotor lug with a heat shield, wherein the heat shield includes a planar portion with a first longitudinal hook on a first side of the planar portion and a second longitudinal hook on an opposite second side of the planar portion, a radially inner side of the planar portion directly contacts the at least one rotor lug and the at least one rotor lug includes a first rail extending radially upward and outward from a distal end of the rotor lug for engaging the first longitudinal hook and a second rail extending radially upward and outward from distal end of the rotor lug for engaging the second longitudinal hook; andb) directing a cooling fluid into a cooling passage defined between the rotor hub and the heat shield. 16. The method of claim 15, wherein the cooling passage includes at least one turbulent structure configured to increase the turbulence of the cooling fluid. 17. The method of claim 15, further including reflecting heat from the rotor hub with the heat shield. 18. The method of claim 15, wherein the planar portion defines a radially outer side of the cooling passage and the rotor hub defines a radially inner side of the cooling passage. 19. The method of claim 15, wherein the first longitudinal hook defines a first fillet extending between a radially inner edge of the first longitudinal hook and a radially outer edge of the first longitudinal hook and the second longitudinal hook defines a second fillet extending between a radially inner edge of the second longitudinal hook and a radially outer edge of the second longitudinal hook.