Thermal management of a gas turbine engine shaft
AssigneeRaytheon Technologies Corporation
InventorsGary D. Roberge, Jorn Axel Glahn
Life of this patent
Estimating the term…
Abstract
A gas turbine engine includes a fan rotor, a compressor section, a combustor section, and a turbine section. The turbine section is positioned downstream of the combustor section. A fan drive turbine in the turbine section, and a shaft connects the fan drive turbine to the fan rotor. An inlet duct is connected to a cooling air source and connected to a cooling compressor downstream of the fan drive turbine. The cooling compressor is connected to an air source, and connected to a turning duct for passing compressed air in an upstream direction through the shaft. A method is also disclosed.
Claims20
A gas turbine engine comprising:
- a fan rotor, a compressor section, a combustor section, and a turbine section, said turbine section being positioned downstream of said combustor section;
- a fan drive turbine in said turbine section, and a shaft connecting said fan drive turbine to said fan rotor;
- an inlet duct connected to a cooling air source and connected to a cooling compressor downstream of said fan drive turbine, and said cooling compressor connected to an air source, and connected to a turning duct for passing compressed air in an upstream direction through said shaft;
- and
- wherein said cooling compressor is supported by a bearing which also supports said shaft.
A gas turbine engine comprising:
- a fan rotor, a compressor section, a combustor section, and a turbine section, said turbine section being positioned downstream of said combustor section;
- a fan drive turbine in said turbine section, and a shaft connecting said fan drive turbine to said fan rotor;
- an inlet duct connected to a cooling air source and connected to a cooling compressor downstream of said fan drive turbine, and said cooling compressor connected to an air source, and connected to a turning duct for passing compressed air in an upstream direction through said shaft;
- and
- wherein said turning duct is positioned relative to a flange at an end of said shaft with an intermediate seal to provide a sealed connection between said duct and said shaft.
Dependencies are inferred from the claim text.