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Noise Reduction Technologies for Turbofan EnginesSignificant progress continues to be made with noise reduction for turbofan engines. NASA has conducted and sponsored research aimed at reducing noise from commercial aircraft. Since it takes many years for technologies to be developed and implemented, it is important to have aggressive technology goals that lead the target entry into service dates. Engine noise is one of the major contributors to the overall sound levels as aircraft operate near airports. Turbofan engines are commonly used on commercial transports due to their advantage for higher performance and lower noise. The noise reduction comes from combinations of changes to the engine cycle parameters and low noise design features. In this paper, an overview of major accomplishments from recent NASA research programs for engine noise will be given.
Document ID
20080001448
Document Type
Technical Memorandum (TM)
Authors
Huff, Dennis L. (NASA Glenn Research Center Cleveland, OH, United States)
Date Acquired
August 24, 2013
Publication Date
September 1, 2007
Subject Category
Acoustics
Report/Patent Number
E-15787
NASA/TM-2007-214495
Meeting Information
35th International Congress and Exposition on Noise Control Engineering (INTER-NOISE 2006)(Honolulu, HI)
Funding Number(s)
WBS: WBS 561581.02.08.03.03.01
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.

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