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1. (WO2015047449) COMPRESSOR AREA SPLITS FOR GEARED TURBOFAN

Pub. No.:    WO/2015/047449    International Application No.:    PCT/US2014/032599
Publication Date: Fri Apr 03 01:59:59 CEST 2015 International Filing Date: Thu Apr 03 01:59:59 CEST 2014
IPC: F04D 29/00
F04D 29/18
F01D 25/00
F02C 7/00
Applicants: UNITED TECHNOLOGIES CORPORATION
Inventors: SCHWARZ, Frederick, M.
SPIESMAN, Paul H.
Title: COMPRESSOR AREA SPLITS FOR GEARED TURBOFAN
Abstract:
A gas turbine engine has an upstream compressor having an upstream entrance area leading into a first vane upstream of the upstream compressor. A downstream compressor has an exit area at a leading edge of an exit vane for the downstream compressor. The entrance area divided by the exit area is greater than or equal to 13.8 and less than or equal to 15.3.