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1. (WO2015047842) LOW PRESSURE RATIO FAN ENGINE HAVING A DIMENSIONAL RELATIONSHIP BETWEEN INLET AND FAN SIZE

Pub. No.:    WO/2015/047842    International Application No.:    PCT/US2014/056203
Publication Date: Fri Apr 03 01:59:59 CEST 2015 International Filing Date: Fri Sep 19 01:59:59 CEST 2014
IPC: F02C 7/36
Applicants: UNITED TECHNOLOGIES CORPORATION
Inventors: LORD, Wesley K.
MALECKI, Robert E.
QIU, Yuan
ROSE, Becky E.
GILSON, Jonathan
Title: LOW PRESSURE RATIO FAN ENGINE HAVING A DIMENSIONAL RELATIONSHIP BETWEEN INLET AND FAN SIZE
Abstract:
According to an example embodiment, a gas turbine engine assembly includes, among other things, a fan that has a plurality of fan blades. A diameter of the fan has a dimension D that is based on a dimension of the fan blades. Each fan blade has a leading edge. An inlet portion is situated forward of the fan. A length of the inlet portion has a dimension L between a location of the leading edge of at least some of the fan blades and a forward edge on the inlet portion. A dimensional relationship of L/D is between about 0.2 and about 0.45.