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A First Look at the DGEN380 Engine Acoustic Data from a Core-Noise PerspectiveThis work is a first look at acoustic data acquired in the NASA Glenn Research Center Aero-Acoustic Propulsion Laboratory using the Price Induction DGEN380 small turbofan engine, with particular emphasis on broadband combustor (core) noise. Combustor noise is detected by using a two-signal source separation technique employing one engine-internal sensor and one semi-far-field microphone. Combustor noise is an important core-noise component and is likely to become a more prominent contributor to overall airport community noise due to turbofan design trends, expected aircraft configuration changes, and advances in fan-noise-mitigation techniques. This work was carried out under the NASA Fundamental Aeronautics Program, Fixed Wing Project, Quiet Performance Subproject
Document ID
20150023070
Document Type
Technical Memorandum (TM)
Authors
Hultgren, Lennart S. (NASA Glenn Research Center Cleveland, OH United States)
Date Acquired
December 15, 2015
Publication Date
December 1, 2015
Subject Category
Aircraft Propulsion and Power
Acoustics
Report/Patent Number
NASA/TM-2015-218924
E-19180
GRC-E-DAA-TN27117
Funding Number(s)
WBS: WBS 081876.02.03.50.03.06
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.
Keywords
Combustor Noise
Turbomachinery Noise
Aeroacoustics

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