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US 2003/0150206 A1Published application
Engine integrated auxiliary power unit
AssigneeUnited Technologies Corporation
InventorsJ. Axel Glahn, Michael K. Sahm
Life of this patent
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Abstract
The present invention relates to an engine integrated auxiliary power unit. The engine comprises a high pressure spool which includes a high pressure compressor connected to a high pressure turbine and a low pressure spool which includes a low pressure compressor connected to a low pressure turbine. The engine further has a system for independently operating the high pressure spool and thus allowing the high pressure spool to function as an auxiliary power unit.
Claims11
An engine having an integrated auxiliary power unit comprising:
- a low pressure spool including a low pressure compressor and a low pressure turbine;
- a high pressure spool including a high pressure compressor and a high pressure turbine;
- and
- means for independently operating said high pressure spool so that said high pressure spool functions as said auxiliary power unit.
1 more element
Dependencies are inferred from the claim text.