公开(公告)号：EP2809579A4

公开(公告)日：2015-09-30

申请号：EP12871777

申请日：2012-12-28

Applicant: UNITED TECHNOLOGIES CORP

Inventor： GALLAGHER EDWARD J ,  MONZON BYRON R ,  LIU LING ,  LI LINDA S ,  WHITLOW DARRYL

IPC: B64C27/48 ,  F01D5/14 ,  F02C7/36 ,  F03D11/00

CPC classification number: F02K3/06 ,  F01D5/141 ,  F02C7/36 ,  Y02T50/673

Abstract: A gas turbine engine includes a spool, a turbine coupled with the spool, a propulsor coupled to be rotated about an axis by the turbine through the spool and a gear assembly coupled between the propulsor and the spool such that rotation of the spool results in rotation of the propulsor at a different speed than the spool. The propulsor includes a hub and a row of propulsor blades that extends from the hub. Each of the propulsor blades has a span between a root at the hub and a tip, and a chord between a leading edge and a trailing edge such that the chord forms a stagger angle ± with the axis. The stagger angle ± is less than 62° at all positions along the span, with said hub being at 0% of the span and the tip being at 100% of the span.