Low Frequency Airplane Noise Measurement
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Low Frequency Airplane Noise Measurement 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
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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 Presentation
Transcript of Low Frequency Airplane Noise Measurement
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 ?