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Enhanced Modeling of Aircraft Taxiway Noise-Scoping. ACRP Web-Only Document 9.
| 题名： | Enhanced Modeling of Aircraft Taxiway Noise-Scoping. ACRP Web-Only Document 9. |
| 作者： | J. Page; K. R. Bassarab; C. M. Hobbs; D. H. Robinson; P. Lucic; |
| 关键词： | taxiways,aircraft noise,data analysis,acoustic measurement,traffic noise models,integrated noise model(inm);airports, air transportation, noise exposure, data bases, runways;airport noise, flight data recorder(fdr) |
| 摘要： | 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. / Supplementary Notes: Prepared in cooperation with CSSI, Inc., Washington, DC. Sponsored by Transportation Research Board, Washington, DC. Airport Cooperative Research Program. and Federal Aviation Administration, Washington, DC. / Availability Note: Order this product from NTIS by: phone at 1-800-553-NTIS (U.S. customers); (703)605-6000 (other countries); fax at (703)605-6900; and email at orders@ntis.gov. NTIS is located at 5301 Shawnee Road, Alexandria, VA, 22312, USA. |
| 报告类型： | 科技报告 |
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