Improving AEDT Modeling for Aircraft Noise Reflection and Diffraction from Terrain and Manmade Structures
Barriers, berms, buildings, and natural terrain may affect the propagation of aircraft noise by shielding or reflecting sound energy. If terrain and manmade structures obstruct the line‐of‐sight between the source and the receiver, then sound energy will be attenuated at the receiver. This attenuation increases with the terrain and structures’ size and proximity to either the source or the receiver. If gaps exist in the terrain or structures, then the potential benefits of acoustical shielding will be substantially reduced. Even when the line‐of‐sight is not obstructed, terrain can reflect the sound and create multiple pathways affecting the sound arriving at the receiver. This report seeks to develop and evaluate noise propagation methods that account for aircraft noise reflection and diffraction from terrain and manmade structures. It also recommends methods for inclusion into the AEDT (Aviation Environmental Design Tool) integrated noise modeling framework and provides updated AEDT user guidance on the influence terrain and man-made structures have on aircraft noise and the applications these new methods have for airport noise analyses.
- Record URL:
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Authors:
- Downing, J Micah
- Calton, Matthew F
- Page, Juliet A
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0000-0002-5168-521X
- Rochat, Judith L
- Publication Date: 2019-8
Language
- English
Media Info
- Media Type: Digital/other
- Edition: Contractor's Final Report
- Features: Figures; References; Tables;
- Pagination: 123p
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Serial:
- ACRP Web-Only Document
- Issue Number: 43
- Publisher: Transportation Research Board
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Publication flags:
Open Access (libre)
Subject/Index Terms
- TRT Terms: Aircraft noise; Noise barriers; Sound level; Sound transmission
- Subject Areas: Aviation; Environment; Vehicles and Equipment;
Filing Info
- Accession Number: 01727046
- Record Type: Publication
- Report/Paper Numbers: ACRP 02-79
- Files: TRIS, TRB, ATRI
- Created Date: Dec 31 2019 10:05AM