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8-1 CHAPTER 8. SUMMARY This report documents a) the taxi noise research conducted in search of a methodology for developing NPD data for INM/AEDT for taxi noise modeling and 2) development of the Noise-Power- Distance Databases for Turbofan (Jet) and Turboprop Aircraft, and, 3) Taxi operating condition acoustic directivity functions for a prescribed Turbofan (Jet) and a prescribed Turboprop fleet. Chapter 2 itemizes INM/AEDT integration assumptions and the spectral class development procedure. Methods for taking empirical taxi noise data and developing NPDs for Jet Aircraft is described in Chapter 3. In Chapter 4 we identify three methods for creating NPD curves which depend on the source taxi noise data availability: Method I. Empirical Taxi Noise Data and ANOPP data; Method II. Empirical Taxi Noise Data Only; and Method III. No Empirical Taxi Noise Data. An itemization of the recommended NPD method for each of the aircraft in the INM/AEDT database is provided in Chapter 5. The Turboprop NPD procedure and application is documented in Chapter 6. Finally, fleet based taxi directivity patterns based on empirical data are documented in Chapter 7. Detailed supporting information about handling Taxi measurement data, ANOPP analysis, Ground vortex ingestion and comparisons of empirical taxi noise with ANOPP and INM flight NPD data is provided in the Appendices.
