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Effects of propeller rotation direction on airplane interior noise levelsInterior noise measurements for upsweeping and downsweeping movement of the propeller blade tips past the fuselage were made on a twin-engine airplane and on two simplified fuselage models. Changes in interior noise levels of as much as 8 dB reversal of propeller rotation direction were measured for some configurations and test conditions.
Document ID
19850022454
Acquisition Source
Legacy CDMS
Document Type
Technical Publication (TP)
Authors
Willis, C. M. (NASA Langley Research Center Hampton, VA, United States)
Mayes, W. H. (NASA Langley Research Center Hampton, VA, United States)
Daniels, E. F. (NASA Langley Research Center Hampton, VA, United States)
Date Acquired
September 5, 2013
Publication Date
July 1, 1985
Subject Category
Acoustics
Report/Patent Number
L-15892
NAS 1.60:2444
NASA-TP-2444
Accession Number
85N30767
Funding Number(s)
PROJECT: RTOP 505-33-53-03
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.

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