Patent ID: 9115649
Filing Date: 2015-08-25
Classification: F01D,F02C,F02K,Y02T

Abstract:
1. A gas turbine engine comprising: a spool; a turbine coupled with said spool; a propulsor coupled to be rotated about an axis by said turbine through said spool; and a gear assembly coupled between said propulsor and said spool such that rotation of said turbine drives said propulsor at a different speed than said spool, wherein said propulsor includes a hub and a row of propulsor blades that extend from said hub, each of said propulsor blades has a span between a root at said hub and a tip, and a chord between a leading edge and a trailing edge such that said chord forms a stagger angle α with said axis, and said stagger angle α is less than 15° at a position along said propulsor blade that is within an inboard 20% of said span, with said hub being at 0% of said span and said tip being at 100% of said span.