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US 7,458,202 B2Granted
Lubrication system for a counter-rotating turbine engine and method of assembling same
AssigneeGeneral Electric Company
InventorsThomas O. Moniz, Jorge F. Seda
Life of this patent
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Abstract
A method for assembling a gas turbine engine includes providing a first fan assembly configured to rotate in a first rotational direction, rotatably coupling a second fan assembly to the first fan assembly, wherein the second fan assembly is configured to rotate in a second rotational direction that is opposite the first rotational direction, and coupling a lubrication system to the gas turbine engine such that a lubrication fluid is channeled through at least a portion of the second fan assembly.
Claims16
A method for assembling a gas turbine engine, said method comprising:
- providing a first fan assembly configured to rotate in a first rotational direction;
- rotatably coupling a second fan assembly to the first fan assembly, wherein the second fan assembly is configured to rotate in a second rotational direction that is opposite the first rotational direction;
- coupling a lubrication system to the gas turbine engine such that a lubrication fluid is channeled through a least a portion of the second fan assembly;
- coupling a first bearing assembly to the first fan assembly;
- coupling a second bearing assembly to the second fan assembly such that the lubrication fluid is channeled to the first and second bearing assemblies;
- and
- channeling air through at least a portion of the second fan assembly to facilitate pressurizing the first and second bearing assemblies.
4 more elements
A gas turbine engine comprising:
- a first fan assembly configured to rotate in a first rotational direction;
- a second fan assembly configured to rotate in a second rotational direction that is opposite the first rotational direction;
- a lubrication system configured to channel a lubricating fluid through at least a portion of said second fan assembly;
- a first bearing assembly rotatably coupled to said first fan assembly;
- a second bearing assembly rotatably coupled to said second fan assembly;
- said lubrication system configured to channel the lubrication fluid to said first and second bearing assemblies;
- and
- a sump pressurization system configured to channel air through at least a portion of the second fan assembly to facilitate pressurizing said first and second bearing assemblies.
5 more elements
Dependencies are inferred from the claim text.