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Acoustic tests of the MOD-O/5A wind turbine rotor with two different aileronsThe noise of a MOD-O wind turbine generator rotor equipped with plain and balanced partial span ailerons for lift and drag control was measured. Data were obtained for a wide range of aileron deflection angles and for limited ranges of wind velocity and power output. Noise levels increased as deflection angles increased and were higher in the upwind than in the downwind direction. The plain aileron exhibited a howling noise in the frequency range 400-800 Hz at deflection angles for which flow induced cavity resonances were significant.
Document ID
19840024050
Acquisition Source
Legacy CDMS
Document Type
Contractor Report (CR)
Authors
Shepherd, K. P. (Bionetics Corp. Hampton, VA, United States)
Hubbard, H. H. (Bionetics Corp. Hampton, VA, United States)
Date Acquired
September 4, 2013
Publication Date
August 1, 1984
Subject Category
Acoustics
Report/Patent Number
NAS 1.26:172427
NASA-CR-172427
Accession Number
84N32120
Funding Number(s)
CONTRACT_GRANT: NAG1-166
CONTRACT_GRANT: NAS1-16978
PROJECT: RTOP 776-33-41
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.

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