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Trailing edge noise data with comparison to theoryThe noise emission generated by the passage of a turbulent airstream over the trailing edge of a semiinfinite plate was measured over a large range of airstream velocity and plate geometry. The experiment was designed to validate trailing-edge noise theories. The results show that the peak of a radiation pattern moves from an upstream to a downstream direction as the velocity increases. The measured radiation pattern of the noise was in agreement with that predicted by a recent fundamental theory for leading- and trailing-edge noise. Although large changes in the character of the turbulent flow near the trailing edge effect the level and spectra of trailing-edge noise, the shape of the pattern is still accurately predicted by this theory.
Document ID
19790063327
Acquisition Source
Legacy CDMS
Document Type
Conference Paper
Authors
Olsen, W.
(NASA Lewis Research Center Cleveland, OH, United States)
Boldman, D.
(NASA Lewis Research Center Cleveland, Ohio, United States)
Date Acquired
August 9, 2013
Publication Date
July 1, 1979
Subject Category
Acoustics
Report/Patent Number
AIAA PAPER 79-1524
Meeting Information
Meeting: American Institute of Aeronautics and Astronautics, Fluid and Plasma Dynamics Conference
Location: Williamsburg, VA
Start Date: July 23, 1979
End Date: July 25, 1979
Sponsors: American Institute of Aeronautics and Astronautics
Accession Number
79A47340
Distribution Limits
Public
Copyright
Other

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