Acoustic characterization of wake vortices in ground effect

Details

• Creators:
  Wang, Frank ; Wassaf, Hadi ; Alix, Daniel C. ; Simich, Petar D.
• Corporate Creators:
  Massachusetts Institute of Technology ; John A. Volpe National Transportation Systems Center (U.S.)
• Subject/TRT Terms:
  • Sound
  • Acoustic emission
  • Aircraft
  • Microphones
  • Turbulence
• Publication/ Report Number:
  AIAA 2005-260
• Resource Type:
  Proceedings
• Geographical Coverage:
  United States
• Corporate Publisher:
  American Institute of Aeronautics and Astronautics
• 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
• Download URL:
  https://rosap.ntl.bts.gov/view/dot/8956/dot_8956_DS1.pdf
• File Type:
  [PDF - 751.40 KB]
• Collection(s):
  Volpe Center
• Main Document Checksum:
  urn:sha-512:ed4f62156dcb9e0939357fb07c537681e0a5feb52406d60ba3433401deb9a07b0d38d43a2b3b18542c2725d4a2c26b0979a5a5bc6028de59451a3f9547e3fda0