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Demonstration of short haul aircraft aft noise reduction techniques on a twenty inch (50.8 cm) diameter fan, volume 3Tests of a twenty inch diameter, low tip speed, low pressure ratio fan which investigated aft fan noise reduction techniques are reported. The 1/3 octave band sound data are presented for all the configurations tested. The model data are presented on 17 foot arc and extrapolated to 200 foot sideline.
Document ID
19800006826
Acquisition Source
Legacy CDMS
Document Type
Contractor Report (CR)
Authors
Stimpert, D. L. (General Electric Co. Cincinnati, OH, United States)
Date Acquired
September 4, 2013
Publication Date
April 1, 1975
Subject Category
Aircraft Propulsion And Power
Report/Patent Number
R75AEG252-VOL-3
NASA-CR-134851
Report Number: R75AEG252-VOL-3
Report Number: NASA-CR-134851
Accession Number
80N15085
Funding Number(s)
CONTRACT_GRANT: NAS3-18021
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.

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