NASA NTRS · 19910043633
Low frequency acoustic emissions from large horizontal axis wind turbines
Abstract
Available test data and theoretical predictions of LF noise from large wind turbines of the type to be used for energy generation are briefly summarized. The main LF noise sources are identified as tower-wake/blade interactions and rotor-plane inflow gradients. Sound-pressure time histories, measured and calculated narrow-band and rotational noise spectra, and noise radiation patterns for the WTS-4 and WWG-0600 wind turbines are presented graphically.
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Hubbard, Harvey H., Shepherd, Kevin P.. 1989-01-01. Low frequency acoustic emissions from large horizontal axis wind turbines. https://ntrs.nasa.gov/citations/19910043633
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