Articles liés à Sound Generation by Aircraft Wake Vortices

Sound Generation by Aircraft Wake Vortices - Couverture souple

Volpe National Transportation Systems Center

 
9781494418120: Sound Generation by Aircraft Wake Vortices
Couverture souple
ISBN 10 : 1494418126 ISBN 13 : 9781494418120
Editeur : CreateSpace Independent Publishing Platform, 2013

Synopsis

This report provides an extensive analysis of potential wake vortex noise sourcesthat might be utilized to aid in their tracking. Several possible mechanisms of aircraftvortex sound generation are examined on the basis of discrete vortex dynamic modelsand characteristic acoustic signatures calculated by application of vortex sound theory. Itis shown that the most robust mechanisms result in very low frequency infrasound. Aninstability of the vortex core structure is discussed and shown to be a possible mechanismfor generating higher frequency sound bordering the audible frequency range. However,the frequencies produced are still low and cannot explain the reasonably high-pitchedsound that has occasionally been observed experimentally. Since the robust mechanismsappear to generate only very low frequency sound, infrasonic tracking of the vortices maybe warranted.

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Éditeur
CreateSpace Independent Publishing Platform
Date d'édition
2013
Langue
anglais
ISBN 10 
1494418126
ISBN 13 
9781494418120
Reliure
Broché
Nombre de pages
28
Coordonnées du fabricant
Printed by Amazon on behalf of the author
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