NASA Logo

NTRS

NTRS - NASA Technical Reports Server

Back to Results
ERA's Open Rotor Studies Including Shielding for Noise ReductionThe Open Rotor is a modern version of the UnDucted Fan (UDF) that was flight tested in the late 1980's through a partnership between NASA and General Electric (GE). Tests were conducted in the 9' x 15' Low Speed Wind Tunnel and the 8' x 6' Supersonic Wind Tunnel starting in late 2009 and completed in early 2012. Aerodynamic and acoustic data were obtained for takeoff, approach and cruise simulations. GE was the primary partner, but other organizations were involved such as Boeing and Airbus who provided additional hardware for fuselage simulations. This test campaign provided the acoustic and performance characteristics for modern open rotor blades designs." NASA and GE conducted joint systems analysis to evaluate how well new blade designs would perform on a B737 class aircraft, and compared the results to an advanced higher bypass ratio turbofan." Acoustic shielding experiments were performed at NASA GRC and Boeing LSAF facilities to provide data for noise estimates of unconventional aircraft configurations with Open Rotor propulsion systems." The work was sponsored by NASA's aeronautics programs, including the Subsonic Fixed Wing (SFW) and the Environmentally Responsible Aviation (ERA) projects."
Document ID
20150009938
Acquisition Source
Glenn Research Center
Document Type
Presentation
Authors
Van Zante, Dale
(NASA Glenn Research Center Cleveland, OH, United States)
Thomas, Russell
(NASA Langley Research Center Hampton, VA, United States)
Date Acquired
June 5, 2015
Publication Date
November 21, 2012
Subject Category
Aircraft Propulsion And Power
Research And Support Facilities (Air)
Acoustics
Report/Patent Number
E-664423
Meeting Information
Meeting: Royal Aeronautical Society Meeting: Progress Towards Open Rotor Propulsion Technology
Location: London
Country: United Kingdom
Start Date: November 21, 2012
Sponsors: Royal Aeronautical Society
Funding Number(s)
WBS: WBS 699959.02.07.03.01
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.
No Preview Available