Invention Application
- Patent Title: GEARED TURBOFAN WITH LOW SPOOL POWER EXTRACTION
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Application No.: US15232101Application Date: 2016-08-09
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Publication No.: US20180045119A1Publication Date: 2018-02-15
- Inventor: William G. Sheridan , Gabriel L. Suciu , Michael E. McCune
- Applicant: United Technologies Corporation
- Main IPC: F02C7/32
- IPC: F02C7/32 ; F02C7/275 ; F02N11/00 ; F02K3/06

Abstract:
A geared turbofan engine includes a first spool including a first compressor and a first turbine. The first compressor is immediately before a combustor and the first turbine is immediately after the combustor. A second spool includes at least a second turbine disposed axially aft of the first turbine. A first tower shaft is engaged to drive the high speed spool. A second tower shaft engaged to be driven by the second spool. A starter is engaged to drive the first tower shaft. An accessory gear box is driven by the second tower shaft. A first clutch is disposed between the first tower shaft and the starter. The first clutch is configured to enable the starter to drive the high speed spool. A second clutch is disposed between the second tower shaft and the accessory gear box, the second clutch configured to enable the second spool to drive the accessory gear box. A gas turbine engine and a method of operating a gas turbine engine are also disclosed.
Information query
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