Acoustic characterization of wake vortices in ground effect

Wang, Frank; Wassaf, Hadi; Alix, Daniel C.; Simich, Petar D.; Massachusetts Institute of Technology; John A. Volpe National Transportation Systems Center (U.S.)

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Acoustic characterization of wake vortices in ground effect

2005-01-01
By Wang, Frank ; Wassaf, Hadi ; Alix, Daniel C. ; ...

[PDF-751.40 KB]

English

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Details:

Creators:

Wang, Frank ; Wassaf, Hadi ; Alix, Daniel C. ; Simich, Petar D.

Wang, Frank ; Wassaf, Hadi ; Alix, Daniel C. ; Simich, Petar D. Less -
Corporate Creators:

Massachusetts Institute of Technology ; John A. Volpe National Transportation Systems Center (U.S.)

Massachusetts Institute of Technology ; John A. Volpe National Transportation Systems Center (U.S.) Less -
Subject/TRT Terms:

[+]

Acoustic Emission Aircraft Microphones Sound Turbulence
Publication/ Report Number:

AIAA 2005-260
Resource Type:

Proceedings
Corporate Publisher:

American Institute of Aeronautics and Astronautics
NTL Classification:

NTL-AVIATION-AVIATION;NTL-AVIATION-Aviation Energy and Environment;
Abstract:

The experience and findings of an exploratory effort to characterize the sound emitted by

aircraft wake vortices near the ground are presented. A line array of four directional

microphones was deployed and recorded the wakes of several commercial aircraft in the

approach phase with particular attention being paid to the characterization of background

noise. It is found that vortices near the ground emit broadband sound with frequency

contents ranging from below 100 Hz to near 2000 Hz and possibly beyond. However,

addressing the degree of consistency of the vortex sound would require deployment of a

larger array. The mechanism of vortex sound generation and suggestions on future studies

are discussed.
Format:

PDF
Collection(s):

Volpe Center
Main Document Checksum:

[+]

urn:sha256:ac38f120868dcbc7c15b3b73edc2f08cb37bcf9cc38e55bc013d609545212b36
Download URL:

https://rosap.ntl.bts.gov/view/dot/8956/dot_8956_DS1.pdf
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Acoustic characterization of wake vortices in ground effect

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