Broadband shock-associated noise from a high-performance military aircraft | Zendy

Aaron B. Vaughn | Zendy; Tracianne B. Neilsen | Zendy; Kent L. Gee | Zendy; Alan T. Wall | Zendy; J. Micah Downing | Zendy; Michael M. James | Zendy

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Broadband shock-associated noise from a high-performance military aircraft

Author(s) -

Aaron B. Vaughn,

Tracianne B. Neilsen,

Kent L. Gee,

Alan T. Wall,

J. Micah Downing,

Michael M. James

Publication year - 2018

Publication title -

the journal of the acoustical society of america

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 0.619

H-Index - 187

eISSN - 1520-8524

pISSN - 0001-4966

DOI - 10.1121/1.5055392

Subject(s) - broadband , shock (circulatory) , noise (video) , acoustics , scale (ratio) , jet engine , environmental science , aircraft noise , physics , aerospace engineering , computer science , optics , noise reduction , engineering , medicine , quantum mechanics , artificial intelligence , image (mathematics)

Broadband shock-associated noise (BBSAN) is a prominent noise component from nonideally expanded jets in the forward and sideline directions. BBSAN from laboratory-scale jets has been studied extensively, and spatial trends in BBSAN spectral peak characteristics-frequency, level, and width-have been established. These laboratory-scale trends are compared to those for BBSAN from a tied-down F-35B operated at four engine conditions. While the peak frequency varies as expected, both spatially and across engine condition, the peak level and width do not, pointing to the need for additional research into BBSAN for high-performance military aircraft.

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