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NASA Open Rotor Noise ResearchOwing to their inherent fuel burn efficiency advantage compared with the current generation high bypass ratio turbofan engines, there is resurgent interest in developing open rotor propulsion systems for powering the next generation commercial aircraft. However, to make open rotor systems truly competitive, they must be made to be acoustically acceptable too. To address this challenge, NASA in collaboration with industry is exploring the design space for low-noise open rotor propulsion systems. The focus is on the system level assessment of the open rotors compared with other candidate concepts like the ultra high bypass ratio cycle engines. To that end there is an extensive research effort at NASA focused on component testing and diagnostics of the open rotor acoustic performance as well as assessment and improvement of open rotor noise prediction tools. In this presentation and overview of the current NASA research on open rotor noise will be provided. Two NASA projects, the Environmentally Responsible Aviation Project and the Subsonic Fixed Wing Project, have been funding this research effort.
Document ID
20100042202
Document Type
Presentation
Authors
Envia, Ed (NASA Glenn Research Center Cleveland, OH, United States)
Date Acquired
August 25, 2013
Publication Date
October 7, 2010
Subject Category
Acoustics
Report/Patent Number
E-17589
Meeting Information
14th CEAS-ASC Workshop(Warsaw)
Funding Number(s)
WBS: WBS WEB 561581.02.08.03.18.03
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.

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