Variable Pitch Fan - The Solution to Achieving High Propulsive Efficiency Turbofan Engines

2009-01-3103

11/10/2009

Event
Aerospace Technology Conference and Exposition
Authors Abstract
Content
Engine manufacturers recognize that either a variable pitch fan blade or a variable area fan nozzle can provide the necessary fan stall/flutter margin to take the next step in engine cycle improvement with enhanced propulsive efficiency and low noise level. The patented Rotating Composite Technologies, LLC variable pitch fan design uniquely offers the same or lower fan hub/tip radius ratio of conventional fixed pitch designs and, with its light weight composite fan blades integrated with an even smaller disk, offers weight savings as well. A variable fan nozzle conversely adds additional weight to the propulsion system and notably will complicate aircraft installation issues relative to competitive manufacturer's engines.
Meta TagsDetails
DOI
https://doi.org/10.4271/2009-01-3103
Pages
7
Citation
Mazzawy, R., and Virkler, J., "Variable Pitch Fan - The Solution to Achieving High Propulsive Efficiency Turbofan Engines," SAE Technical Paper 2009-01-3103, 2009, https://doi.org/10.4271/2009-01-3103.
Additional Details
Publisher
Published
Nov 10, 2009
Product Code
2009-01-3103
Content Type
Technical Paper
Language
English