Translation of Airfoil Trailing Edge Noise Article from 'Revue d'Acoustique'
PENNSYLVANIA STATE UNIV UNIVERSITY PARK APPLIED RESEARCH LAB
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The paper Bruit dun profil dans un ecoulement, by P. Garcia and P. Gerard, has been translated into English. The paper originally was published in Revue dAcoustique, No 73, 1985 22 by Office National dEtudes et de Recherches Aerospatiales ONERA. The work, Airfoil noise in air flow, describes measurements of the wave number spectrum of the turbulent boundary layer induced pressure field in the vicinity of the airfoil trailing edge. An estimate of radiated noise using modifications to the theories of Howe and Hogdson is made. The paper is significant because of the good agreement between the measurements of Brooks and Hogdson 1980 and a predicted radiated noise level based on a measured trailing edge fluctuating pressure wave number spectrum with measured far field radiated noise. An effect of array element separation distance on measured convection velocity is also shown.