Stability of sonic boom metrics regarding signature distortions from atmospheric turbulence.
| Autor: | Doebler WJ; Graduate Program in Acoustics, The Pennsylvania State University, 201 Applied Science Building, University Park, Pennsylvania 16802, USA wfd5057@psu.edu, vws1@psu.edu., Sparrow VW; Graduate Program in Acoustics, The Pennsylvania State University, 201 Applied Science Building, University Park, Pennsylvania 16802, USA wfd5057@psu.edu, vws1@psu.edu. |
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| Jazyk: | angličtina |
| Zdroj: | The Journal of the Acoustical Society of America [J Acoust Soc Am] 2017 Jun; Vol. 141 (6), pp. EL592. |
| DOI: | 10.1121/1.4986209 |
| Abstrakt: | The degree of insensitivity to atmospheric turbulence was evaluated for five metrics (A-, B-, E-weighted sound exposure level, Stevens Mark VII Perceived Level, and NASA's Indoor Sonic Boom Annoyance Predictor) that correlate to human annoyance from sonic booms. Eight N-wave shaped sonic booms from NASA's FaINT experiment and five simulated "low-boom" sonic booms were turbulized by Locey's ten atmospheric filter functions. The B-weighted sound exposure level value changed the least due to the turbulence filters for twelve of thirteen booms. This makes it the most turbulence stable metric which may be useful for quiet supersonic aircraft certification. |
| Databáze: | MEDLINE |
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