Enhanced Modeling of Aircraft Taxiway Noise, Volume 1: Scoping (2009) / Chapter Skim
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A-1 Appendix A: Reagan Washington National Airport (DCA) Taxi Noise Measurements A.1 .
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A-2 at positions Kilo-Fox 1 and Kilo-Fox 2 shown in Figures A-3. The SLM at Kilo-Fox 1 was placed 1.3 m (4.5 ft)
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A-3 Meteorological data was obtained from the DCA weather hourly report for the duration of the measurements. The weather data is shown in Table A-1.
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A-4 centerlines arbitrarily named 1, 2 and 3 at holding block J at the beginning of runway 19, as shown in Figure A-5. The aircraft would queue-up in the holding block and hold at positions A, B, and C along the centerlines.
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A-5 Figure A-8. Field note log sheet for 30 June 2008 (part 2/2)
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A-6 Figure A-9. Field note log sheet for 3 July 2008 (part 1/3)
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A-7 Figure A-10. Field note log sheet for 3 July 2008 (part 2/3)
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A-8 Figure A-11. Field note log sheet for 3 July 2008 (part 3/3)
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A-9 A.3 . DCA Measurement Analys is A total of 47 taxiway pass-by events were measured on 30 June 2008.
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A-10 737 & A319 Taxiway Longitudinal Directivity 70 75 80 85 90 95 100 20 40 60 80 100 120 140 160 Directivity Angle (deg)
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A-11 CRJ Taxiway Longitudinal Directivity 70 75 80 85 90 95 100 20 40 60 80 100 120 140 160 Directivity Angle (deg)
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A-12 A curve fit was determined as representative of measured B737 taxiway longitudinal directivity, shown as an orange curve in Figure A-15. This representative 737 directivity profile is used for the detailed single event simulation studies presented in the main report in Chapter 4.
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