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US 2020/0400077 A1Published application
Gas turbine auxiliary power unit
AssigneePratt & Whitney Canada Corp.
InventorsTimothy REDFORD, David MENHEERE
Life of this patent
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Abstract
An auxiliary power unit (APU) includes, in serial flow communication: an engine compressor, a combustor and a turbine, the turbine rotatable about an engine axis. A first shaft operatively connects the turbine to the engine compressor and extends non-parallel to the engine axis. A second shaft operatively connects the turbine to a load and extends non-parallel to the engine axis. A method of operating an APU is also described.
Claims20
An auxiliary power unit (APU), comprising:
- in serial flow communication, an engine compressor, a combustor and a turbine, the turbine rotatable about an engine axis;
- a first shaft operatively connecting the turbine to the engine compressor, the first shaft extending non-parallel to the engine axis;
- and
- a second shaft operatively connecting the turbine to a load, the second shaft extending non-parallel to the engine axis.
1 more element
A gas turbine auxiliary power unit (APU), comprising:
- in serial flow communication,
- a first engine compressor, a second engine compressor, a combustor and a turbine,
- the second engine compressor and the turbine being rotatable about an engine axis, the first engine compressor configured to be driven by the turbine, a rotation axis of the first engine compressor being non-parallel to the engine axis.
A method of operating an auxiliary power unit (APU), comprising:
- generating exhaust gases in a combustor of a gas turbine engine to drive a turbine about an engine axis;
- rotating a first shaft non-parallel to the engine axis using power from the turbine and using the first shaft to drive a compressor of the gas turbine engine;
- and
- rotating a second shaft non-parallel to the engine axis using power from the turbine and using the second shaft to drive a load.
1 more element
Dependencies are inferred from the claim text.