Engine driven by SC02 cycle with independent shafts for combustion cycle elements and propulsion elements
First Claim
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1. A gas turbine engine, comprising:
- a first shaft coupled to a first turbine and a first compressor;
a second shaft coupled to a second turbine and a second compressor;
a third shaft coupled to a third turbine and a fan assembly;
a heat rejection heat exchanger configured to reject heat from a closed loop system with bypass air passed from the fan assembly to provide cooling to the heat rejection heat exchanger;
a combustor positioned to receive compressed air from the second compressor as a core stream;
wherein the closed-loop system includes the first, second, and third turbines and the first compressor and receives energy input from the combustor; and
wherein the closed-loop system is configured to provide power from the combustor to the first, second, and third turbines.
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Abstract
A gas turbine engine includes a first shaft coupled to a first turbine and a first compressor, a second shaft coupled to a second turbine and a second compressor, and a third shaft coupled to a third turbine and a fan assembly. The turbine engine includes a heat rejection heat exchanger configured to reject heat from a closed loop system with air passed from the fan assembly, and a combustor positioned to receive compressed air from the second compressor as a core stream. The closed-loop system includes the first, second, and third turbines and the first compressor and receives energy input from the combustor.
64 Citations
19 Claims
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1. A gas turbine engine, comprising:
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a first shaft coupled to a first turbine and a first compressor; a second shaft coupled to a second turbine and a second compressor; a third shaft coupled to a third turbine and a fan assembly; a heat rejection heat exchanger configured to reject heat from a closed loop system with bypass air passed from the fan assembly to provide cooling to the heat rejection heat exchanger; a combustor positioned to receive compressed air from the second compressor as a core stream; wherein the closed-loop system includes the first, second, and third turbines and the first compressor and receives energy input from the combustor; and wherein the closed-loop system is configured to provide power from the combustor to the first, second, and third turbines. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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8. A method of providing power via a gas turbine engine, comprising:
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powering a first shaft via a closed loop system that passes a working fluid from a first compressor to a combustor, receives power from combustion in the combustor, passes the working fluid from the combustor to a first turbine, and cools the working fluid with bypass air in a heat rejection heat exchanger; passing the working fluid from the combustor and powering a second shaft using a second turbine of the closed loop system that is coupled to the second shaft, to provide a core stream of air via a second compressor to the combustor; and passing the working fluid from the combustor and powering a third shaft using a third turbine of the closed loop system that is coupled to the third shaft, to provide power to a fan assembly that provides both the core stream of air to the second compressor, and to provide a cooling stream of air to the heat rejection heat exchanger; wherein the closed-loop system includes the first, second, and third turbines and the first compressor and receives energy input from the combustor; and wherein the closed-loop system is configured to provide power from the combustor to the first, second, and third turbines. - View Dependent Claims (9, 10, 11, 12, 13, 14, 15)
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16. A power-producing device, comprising:
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an inner housing for passing a core stream of air, the inner housing houses; a first shaft coupled to a first turbine and a first compressor; a second shaft coupled to a second turbine and a second compressor; a third shaft coupled to a third turbine and a fan assembly; a combustor positioned to receive compressed air from the second compressor; and a heat rejection heat exchanger configured to reject heat from a closed loop system with bypass air passed from a fan assembly to provide cooling to the heat rejection heat exchanger; wherein the closed-loop system includes the first, second, and third turbines and the first compressor and receives energy input from the combustor; and wherein the closed-loop system is configured to provide power from the combustor to the first, second, and third turbines. - View Dependent Claims (17, 18, 19)
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Specification