Enhanced Modeling of Aircraft Taxiway Noise—Scoping
Aircraft taxi noise acoustic sensitivity studies were conducted to document the importance of the modeling elements within INM and AEDT: source noise, operations, and environmental propagation. Sensitivity studies decoupled the taxi noise into the three areas and exercised each element independently. Limited opportunistic commercial aircraft taxi operation acoustic measurements were conducted. Independent taxi flight data recorder (FDR) information was queried to determine statistical engine and aircraft operational parameters. The sensitivity studies revealed the primary driver for prediction is source noise: level, spectra and directivity. A nominal taxi state NPD, spectral class and directivity database is suggested based on existing data augmented with measurements. There is sufficient capability in INM to support detailed taxi operations. Future improvements planned for AEDT will reduce user input burden. The propagation algorithms, primarily lateral attenuation are sufficient. Airport-specific considerations may necessitate inclusion of terrain, shielding and variable ground impedance. The measured acoustic data and FDR data were separate; therefore one could not quantify sensitivity of taxi noise to thrust. This identifies a need for a concurrent acoustic/FDR dataset. The study suggests modeling nominal taxi state in the short term with a comprehensive long term enhanced acoustic sensitivity to thrust capability.
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Supplemental Notes:
- Distribution, posting, or copying of this PDF is strictly prohibited without written permission of the Transportation Research Board of the National Academy of Sciences. Unless otherwise indicated, all materials in this PDF are copyrighted by the National Academy of Sciences. Copyright © National Academy of Sciences. All rights reserved
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Authors:
- Page, J
- Bassarab, K R
- Hobbs, C M
- Robinson, Daniel H
- Schultz, T D
- Sharp, B H
- Usdrowski, S M
- Lucic, Panta
- Publication Date: 2009-6
Language
- English
Media Info
- Media Type: Web
- Edition: Contractor Final Report
- Features: Appendices; Figures; Photos; References; Tables;
- Pagination: 153p
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Serial:
- ACRP Web-Only Document
- Issue Number: 9
- Publisher: Transportation Research Board
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Publication flags:
Open Access (libre)
Subject/Index Terms
- TRT Terms: Acoustic emission; Aircraft noise; Computer models; Flight recorders; Measurement; Noise sources; Taxiways
- Subject Areas: Aviation; Environment; I15: Environment;
Filing Info
- Accession Number: 01145979
- Record Type: Publication
- Report/Paper Numbers: ACRP Project 11-02 Task 08
- Files: TRIS, TRB
- Created Date: Dec 10 2009 11:41AM