Title:
REVERSE CORE GEAR TURBOFAN
Document Type and Number:
WIPO Patent Application WO/2014/007880
Kind Code:
A3
Abstract:
A gas turbine engine has a fan at an axially outer location. The fan rotates about an axis of rotation. The fan delivers air into an outer bypass duct, and across a booster fan positioned radially inwardly of the outer bypass duct. The booster fan delivers air into a radially middle duct, and across a cold turbine into a radially inner core duct being directed into a compressor. From the compressor, air flows axially in a direction back toward the fan through a combustor section, and across an exhaust of the turbine section as directed into the middle duct. A gear reduction drives the fan from a fan drive turbine section. A method is also disclosed.
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Inventors:
KUPRATIS DANIEL BERNARD (US)
MOON FRANCIS R (US)
MOON FRANCIS R (US)
Application Number:
PCT/US2013/033776
Publication Date:
March 20, 2014
Filing Date:
March 26, 2013
Export Citation:
Assignee:
UNITED TECHNOLOGIES CORP (US)
International Classes:
F02C3/067; F02C7/36; F02K3/072
Foreign References:
| US20110056208A1 | 2011-03-10 | |||
| US20050060983A1 | 2005-03-24 | |||
| US5105618A | 1992-04-21 | |||
| US4141212A | 1979-02-27 | |||
| US20100212285A1 | 2010-08-26 |
Other References:
See also references of EP 2831396A4
Attorney, Agent or Firm:
OLDS, Theodore W. (Gaskey & Olds/Pratt & Whitneyc/o CPA Global,P.O. Box 5205, Minneapolis Minnesota, US)
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