low frequency airplane noise measurement
DESCRIPTION
Xiao Di, Claus H. Hetzer, Ronald A. Wagstaff, and Kenneth E. Gilbert National Center for Physical Acoustics University of Mississippi, University, MS 38677 [email protected] November 3, 2008 Work Supported By The U.S. Army TACOM-ARDEC at Picatinny Arsenal, New Jersey. - PowerPoint PPT PresentationTRANSCRIPT
Low Frequency Airplane Noise Measurement
Xiao Di, Claus H. Hetzer, Ronald A. Wagstaff, and Kenneth E. Gilbert
National Center for Physical AcousticsUniversity of Mississippi, University, MS 38677
[email protected] 3, 2008
Work Supported By The U.S. Army TACOM-ARDEC at Picatinny Arsenal, New Jersey
Experiment Site: Memphis Airport
April - July, 2007
Fedex Plane Preparing Landing(video)
Fedex Plane Landing at 11 Am
Fedex Plane Overhead & Landing at 1 PM
Summary
Airplane landing generated infrasound sound detected
(60 dB-70 dB) at distance of 2 to 3 miles (over 75 occasions)
Mechanism? Wingtip vortices
Reverse Thrust
Flaps and Spoilers
More Experiments Are Planned
QUESTIONS ?