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An Assessment of Open Rotor Noise Prediction ToolsAssess the current capability for predicting the aerodynamic and acoustic performance of open rotors. The testbed is a GE blade set called F31/A31 for which significant amount of aerodynamic and acoustic data was acquired in model scale tests. F31/A31 is a vintage 1990s design with a 12-bladed front rotor and a 10-bladed aft rotor. This blade set was tested in both low-speed regime (representative of approach and takeoff conditions) and high-speed regime (representative of climb and cruise conditions). Uninstalled as well as installed configurations were tested. The focus of this interim presentation is on a subset of the low-speed tests for which the tip speed was varied, but the blade setting angles and tunnel Mach number were held fixed.
Document ID
20150009578
Acquisition Source
Glenn Research Center
Document Type
Presentation
Authors
Envia, Ed
(NASA Glenn Research Center Cleveland, OH, United States)
Date Acquired
June 4, 2015
Publication Date
October 23, 2012
Subject Category
Acoustics
Aerodynamics
Report/Patent Number
E-664087
Meeting Information
Meeting: NASA Acoustics Technical Working Group
Location: Hampton, VA
Country: United States
Start Date: October 23, 2012
End Date: October 25, 2012
Sponsors: NASA Headquarters
Funding Number(s)
WBS: WBS 561581.02.08.03.45.02.04
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.
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