Turbine shaft power take-off
First Claim
1. A multi-spool gas turbine engine comprising:
- a low pressure (LP) spool and a high pressure (HP) spool independently rotatable of one another about an engine axis, the LP spool comprising an LP turbine, an LP compressor and an LP shaft, the HP pressure spool comprising an HP turbine, an HP compressor and an HP shaft;
the LP turbine being in fluid flow communication with the HP turbine and disposed downstream therefrom, the HP compressor being in fluid flow communication with the LP compressor and disposed downstream therefrom, the LP shaft having an upstream shaft portion extending upstream of the LP turbine to a location upstream of the LP compressor to provide a first power take-off at an upstream end of the engine and a downstream shaft portion extending downstream of the LP turbine to provide a second power take-off at a downstream end of the engine.
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Accused Products
Abstract
A multi-spool gas turbine engine comprises a low pressure (LP) spool and a high pressure (HP) spool independently rotatable of one another about an engine axis. The LP spool comprises an LP turbine, an LP compressor and an LP shaft. The HP pressure spool comprises an HP turbine, an HP compressor and an HP shaft. The LP turbine is in fluid flow communication with the HP turbine and disposed downstream therefrom. The HP compressor is in fluid flow communication with the LP compressor and disposed downstream therefrom. The LP shaft has an upstream shaft portion extending upstream of the LP turbine to a location upstream of the LP compressor to provide a first power take-off at an upstream end of the engine and a downstream shaft portion extending downstream of the LP turbine to provide a second power take-off at a downstream end of the engine, thereby allowing mounting of a reduction gear box at either end of the engine.
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Citations
20 Claims
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1. A multi-spool gas turbine engine comprising:
- a low pressure (LP) spool and a high pressure (HP) spool independently rotatable of one another about an engine axis, the LP spool comprising an LP turbine, an LP compressor and an LP shaft, the HP pressure spool comprising an HP turbine, an HP compressor and an HP shaft;
the LP turbine being in fluid flow communication with the HP turbine and disposed downstream therefrom, the HP compressor being in fluid flow communication with the LP compressor and disposed downstream therefrom, the LP shaft having an upstream shaft portion extending upstream of the LP turbine to a location upstream of the LP compressor to provide a first power take-off at an upstream end of the engine and a downstream shaft portion extending downstream of the LP turbine to provide a second power take-off at a downstream end of the engine. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12)
- a low pressure (LP) spool and a high pressure (HP) spool independently rotatable of one another about an engine axis, the LP spool comprising an LP turbine, an LP compressor and an LP shaft, the HP pressure spool comprising an HP turbine, an HP compressor and an HP shaft;
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13. A multi-spool gas turbine engine comprising:
- a low pressure (LP) spool;
a high pressure (HP) spool;
the LP and HP spools independently rotatable of one another about an engine axis;
the LP spool comprising an LP turbine drivingly connected to an LP compressor by an LP shaft, the LP turbine disposed downstream of the LP compressor relative to a flow of gases through the engine, the LP shaft having an upstream and a downstream shaft portion extending in opposite directions from the LP turbine to an upstream end and a downstream end of the engine, respectively, the upstream shaft portion of the LP shaft extending axially through the LP compressor to a location upstream of the LP compressor at the upstream end of the engine;
the HP pressure spool comprising an HP turbine drivingly connected to an HP compressor by an HP shaft;
an accessory gear box (AGB) disposed at the upstream end of the engine upstream of the LP compressor and drivingly connected to the HP spool; and
a reduction gearbox (RGB) disposed at the upstream or the downstream end of the engine and drivingly connected to a corresponding output end of the upstream or downstream shaft portion of the LP shaft. - View Dependent Claims (14, 15, 16, 17, 18, 19, 20)
- a low pressure (LP) spool;
Specification