The role of nonlinear effects in the propagation of noise from high-power jet aircraft

被引：0
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作者：
Gee, Kent L. [1 ,3 ]
Sparrow, Victor W. [1 ]
James, Michael M. [2 ,4 ]
Downing, J. Micah [2 ,4 ]
Hobbs, Christopher M. [2 ]
Gabrielson, Thomas B. [1 ]
Atchley, Anthony A. [1 ]
机构：
[1] Graduate Program in Acoustics, 201 Applied Science Building, Pennsylvania State University, University Park, PA 16802, United States
[2] Wyle Laboratories, 241 18th Street South, Arlington, VA 22202, United States
[3] Department of Physics and Astronomy, N243 ESC, Provo, UT 84602, United States
[4] Blue Ridge Research and Consulting, LLC, 13 1/2 W. Walnut St., Asheville, NC 28801, United States
来源：
Journal of the Acoustical Society of America | 2008年 / 123卷 / 06期
关键词：
To address the question of the role of nonlinear effects in the propagation of noise radiated by high-power jet aircraft; extensive measurements were made of the F-22A Raptor during static engine run-ups. Data were acquired at low-; intermediate-; and high-thrust engine settings with microphones located 23-305 m from the aircraft along several angles. Comparisons between the results of a generalized-Burgers-equation-based nonlinear propagation model and the measurements yield favorable agreement; whereas application of a linear propagation model results in spectral predictions that are much too low at high frequencies. The results and analysis show that significant nonlinear propagation effects occur for even intermediate-thrust engine conditions and at angles well away from the peak radiation angle. This suggests that these effects are likely to be common in the propagation of noise radiated by high-power aircraft. © 2008 Acoustical Society of America;
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摘要：
Conference article (CA)
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页码：4082 / 4093
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