Title:
COUNTER-ROTATING LOW PRESSURE TURBINE WITH GEAR SYSTEM MOUNTED TO MID TURBINE FRAME
Document Type and Number:
WIPO Patent Application WO/2013/172905
Kind Code:
A3
Abstract:
A gas turbine engine includes a shaft defining an axis of rotation. An outer turbine rotor directly drives the shaft and includes an outer set of blades. An inner turbine rotor has an inner set of blades interspersed with the outer set of blades. The inner turbine rotor is configured to rotate in an opposite direction about the axis of rotation from the outer turbine rotor. A gear system couples the inner turbine rotor to the shaft and is configured to rotate the inner set of blades at a faster speed than the outer set of blades. The gear system is mounted to a mid-turbine frame.
Inventors:
SUCIU GABRIEL L (US)
MERRY BRIAN D (US)
MERRY BRIAN D (US)
Application Number:
PCT/US2013/027549
Publication Date:
February 06, 2014
Filing Date:
February 25, 2013
Export Citation:
Assignee:
UNITED TECHNOLOGIES CORP (US)
International Classes:
F02K3/072; F01D25/14; F02C7/00; F02K3/00
Foreign References:
| US20100154384A1 | 2010-06-24 | |||
| US20060093464A1 | 2006-05-04 | |||
| US20090151317A1 | 2009-06-18 | |||
| US20090191045A1 | 2009-07-30 | |||
| US20100192595A1 | 2010-08-05 |
Other References:
See also references of EP 2820282A4
Attorney, Agent or Firm:
GOTTSCHALK, William, S. (Gaskey & Olds/Pratt & Whitneyc/o CPA Global,P.O. Box 5205, Minneapolis Minnesota, US)
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