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Measured and calculated characteristics of wind turbine noiseThe results of an analytical and experimental investigation of wind turbine noise are presented. Noise calculations indicate that for configurations with the rotor downwind of the support tower, the primary source of noise is the rapid change in rotor loadings which occurs as the rotor passes through the tower wake. Noise measurements are presented for solid and truss type tower models with both upwind and downwind rotors. Upwind rotor configurations are shown to be significantly quieter than downwind configurations. The model data suggest that averaged noise measurements and noise calculations based on averaged tower wake characteristics may not accurately represent the impulsive noise characteristics of downwind rotor configurations.
Document ID
19820015848
Acquisition Source
Legacy CDMS
Document Type
Conference Paper
Authors
Greene, G. C.
(NASA Langley Research Center Hampton, VA, United States)
Date Acquired
August 10, 2013
Publication Date
May 1, 1981
Publication Information
Publication: NASA. Lewis Research Center Wind Turbine Dyn.
Subject Category
Energy Production And Conversion
Accession Number
82N23724
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.
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