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Fan Stagger Angle for Dirt RejectionA gas turbine engine includes a spool, a turbine coupled to drive 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 turbine drives the propulsor at a different speed than the spool. The propulsor includes a hub and a row of propulsor blades that extend 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. The chord forms a stagger angle alpha with the axis, and the stagger angle alpha is less than 15 deg. at a position along the propulsor blade that is within an inboard 20% of the span.


Document ID
20150016933
Acquisition Source
Glenn Research Center
Document Type
Other - Patent
Authors
Gallagher, Edward J.
Rose, Becky E.
Brilliant, Lisa I.
Date Acquired
September 2, 2015
Publication Date
August 25, 2015
Subject Category
Aircraft Propulsion And Power
Funding Number(s)
CONTRACT_GRANT: NAS3-01138
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.
Patent
US-Patent-9,115,649
Patent Application
US-Patent-Appl-SN-13/176,473

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