MULTI-SPOOL GAS TURBINE ENGINE ARCHITECTURE
First Claim
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1. A multi-spool gas turbine engine comprising:
- a low pressure (LP) spool and a high pressure (HP) spool rotatable independently of one another about a central axis, the LP spool having an LP compressor and an LP turbine, the HP spool having an HP turbine and an HP compressor;
the engine further comprising an accessory gear box (AGB) and a tower shaft drivingly connecting the AGB to the HP spool, the AGB is disposed on the engine so that the central axis extends through the AGB, wherein the LP compressor is axially positioned between the HP compressor and the AGB.
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Abstract
A multi-spool gas turbine engine comprises a low pressure (LP) spool and a high pressure (HP) spool independently rotatable about a central axis extending through an accessory gear box (AGB). The LP spool has an LP compressor, which is axially positioned between the HP compressor of the HP spool and the AGB. A tower shaft drivingly connects the HP spool to the AGB.
29 Citations
29 Claims
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1. A multi-spool gas turbine engine comprising:
- a low pressure (LP) spool and a high pressure (HP) spool rotatable independently of one another about a central axis, the LP spool having an LP compressor and an LP turbine, the HP spool having an HP turbine and an HP compressor;
the engine further comprising an accessory gear box (AGB) and a tower shaft drivingly connecting the AGB to the HP spool, the AGB is disposed on the engine so that the central axis extends through the AGB, wherein the LP compressor is axially positioned between the HP compressor and the AGB. - 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 rotatable independently of one another about a central axis, the LP spool having an LP compressor and an LP turbine, the HP spool having an HP turbine and an HP compressor;
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13. A reverse flow gas turbine engine comprising:
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an output drive shaft having a front end configurable to drivingly engage a rotatable load; a low pressure (LP) spool rotatable about an engine axis and including an LP turbine drivingly engaged to the output drive shaft, and an LP compressor drivingly connected to the LP turbine, the LP turbine disposed forward of the LP compressor relative to a front end of the output drive shaft; and a high pressure (HP) spool rotatable about the engine axis independently of the LP spool, the HP spool including an HP turbine and an HP compressor drivingly engaged to an HP shaft, the HP compressor disposed forward of the LP compressor and in fluid communication therewith, and the HP turbine disposed aft of the LP turbine and in fluid communication therewith; a tower shaft mechanically coupled to the high pressure spool; an accessory gearbox (AGB) disposed aft of the LP compressor, the engine axis extending through the AGB; and an AGB drive shaft having a first end mechanically coupled to the tower shaft and a second end mechanically coupled to the AGB. - View Dependent Claims (14, 15, 16, 17, 18)
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19. A multi-spool gas turbine engine comprising:
- a low pressure (LP) spool;
a high pressure (HP) spool, the LP spool and the HP spool being independently rotatable about a central axis, the LP pressure spool comprising an LP compressor and an LP turbine, the HP spool comprising an HP turbine and an HP compressor; and
an accessory gear box (AGB), the central axis extending through the AGB and the LP compressor being axially positioned between the HP compressor and the AGB, the AGB comprising first and second gear trains, the first gear train having a first drive input, the second gear drain having a second drive input, the first and second drive inputs being respectively drivingly connected to the HP and LP spools. - View Dependent Claims (20, 21, 22, 23, 24)
- a low pressure (LP) spool;
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25. A multi-spool gas turbine engine comprising:
- a low pressure (LP) spool;
a high pressure (HP) spool, the LP spool and the HP spool being independently rotatable about a central axis, the LP pressure spool comprising an LP compressor and an LP turbine, the HP spool comprising an HP turbine and an HP compressor;
an accessory gear box (AGB), the central axis extending through the AGB and the LP compressor being axially positioned between the HP compressor and the AGB; and
at least one accessory drivingly connected to the AGB, the at least one accessory being mounted on a side of the AGB and having an input axis oriented transversally with respect to the central axis. - View Dependent Claims (26, 27, 28, 29)
- a low pressure (LP) spool;
Specification