December 1, 2008 Overview of the FAA’s Aviation Environmental Design Tool (AEDT) Presented to: National Parks Overflight Advisory Group (NPOAG) Presented by: Christopher J. Roof US DOT Volpe Center Environmental Measurement and Modeling Division

12/1/20082 AEDT Development Team This work is funded by the U.S. Federal Aviation Administration (FAA) Office of Environment and Energy (AEE), under the FAA/Volpe General Working Agreement. The AEDT effort is co-managed by Ralph Iovinelli and Chris Roof.

12/1/20083 Outline What is AEDT? What does AEDT mean for me? Users of AEDT Capability Demonstrations Development Timeline Current State of AEDT and Legacy Tools Assessment Next Steps

12/1/20084 What is AEDT? Single, Integrated Aviation Environmental Tool Scale -Global / National / Regional / Local -Noise / Emissions / Fuel Burn Interdependencies / Tradeoffs Future Technologies (EDS) Integrated Economic Analysis (APMT) EDS – Environmental Design Space = “Future Technology”APMT – Aircraft environmental Portfolio Management Tool = “Economics”

12/1/20085 AEDT as part of FAA/AEE Tools Suite APMT PARTIAL EQUILIBRIUM BLOCK APMT COSTS & BENEFITS New Aircraft Emissions Noise APMT BENEFITS VALUATION BLOCK Monetized Benefits Collected Costs Noise Emissions Fuel Burn AEDT Schedule Fleet Integrated Noise, Emissions, and Fuel Burn Analyses Single Airport Regional Global Studies EDS New aircraft performance & environmental characteristics Policy and Scenarios

12/1/20086 What AEDT means for me? AEDT will replace the following Models: Integrated Noise Model - INM Emissions and Dispersion Modeling System - EDMS Noise Integrated Routing System - NIRS

12/1/20087 What AEDT means for me? (cont) More consistent noise & emissions analyses Cost savings re defining model scenarios Easier / more effective communication with stakeholders Streamlined / improved ­Data input processes ­Analysis capabilities Tool that meets all needs ­Regulatory ­User expectations ­Public expectations

12/1/20088 AEDT Users EDMS and INM >> 1000 users worldwide Environmental analyses, e.g., EIS, Part 150s, etc. AEDT Design Review Group (DRG) SAGE and MAGENTA FAA and development team primary users Support ICAO/CAEP and JPDO analyses NIRS Regional airspace redesigns EDMS – Emissions and Dispersion Modeling System SAGE – System for assessing Aviation’s Global Emissions INM – Integrated Noise Model NIRS – Noise Integrated Routing System MAGENTA - Model for Assessing Global Exposure from Noise of Transport Airplanes

12/1/20089 AEDT Users (cont.) NASA “Advanced Vehicle Concepts and Implications for NextGen” Research Areas (NRA) Very Light Jets (VLJ), Tiltrotors, Cruise Efficient Short Take-Off and Landing aircraft (CESTOL), Supersonic Transport (SST), Unmanned Aerial Vehicles (UAS) AEDT used for advanced aircraft and operations modeling NIRS – Noise Integrated Routing System N+2 Hybrid Wing/Body N+1 Conventional Runway Spiral Decent Normal Glide slope Steep Decent

12/1/ AEDT Users (cont.) Design Review Group (DRG) Select group of tool “power users” Meet w/ development team 1-2 times per year Help guide / review development progress

12/1/ Development Timeline 2008 EDMS 5.1 INM 7.0a AEDT beta Testing 2007 EDMS* INM* NIRS* * Annual releases as needed DRG #2 AEDT 2.0 AEDT Newsletters as needed DRG meetings 1-2 times per year, as needed NIRS a EDMS* INM* NIRS* DRG #3

12/1/ Use of AEDT pre Version 2.0 ICAO/CAEP 1.Global NOx Stringency 2.Environmental Trends Assessment 3.Local Air Quality Assessment Continuous Descent Approach (CDA) Reduced Vertical Separation Minimum (RVSM) Military Airspace Openings Analysis Atlantic Interoperability Initiative to Reduce Emissions (AIRE)

12/1/ Current State – Legacy Models Emissions Database Emissions Modules Study Data Noise Databases Noise Module Regional Databases Regional Modules Fleet Database Aircraft Performance Module Contour Module Terrain Module Airports Database

12/1/ Current State – AEDT Databases Redesigned database structure to support all legacy tools (i.e., INM, EDMS, NIRS, MAGENTA & SAGE) Data harmonized across legacy tools includes source database measurement data (Fitchburg- 04/02, 10/06, Crisfield- 10/08...) Harmonization with available international sources AEDT Airports Database AEDT Fleet Database AEDT Movements Database AEDT N on-Aircraft Database

12/1/ Current State – AEDT Modules Redesigned computational modules, e.g., emissions, aircraft performance Noise and emissions analyses utilize harmonized, integrated, common modules Aircraft Acoustics Aircraft Emissions Dispersion Fleet and Operations Aircraft Performance

12/1/ Aircraft Data Aircraft Fleet Database Study-Specific Database Airports Database Aircraft Data Movements Database Aircraft DataNon-aircraft Sources Database Graphical User Interface or Advanced Input Files GIS Capability Contours Outputs Emissions Inventories Noise & Pollutants Grids Noise Change Analyses Total Noise & Emissions Results Database Calculate Pollutant Concentrations Calculate Additional Noise Metrics Terrain Calculations Weather Calculations Fly Aircraft Calculate Noise Calculate Emissions All Pollutants + GHGs SEL, Time Audible, Lmax, Time Above Aircraft Performance + Fuel Burn Repeat for all Flights Time Using AEDT

12/1/ Parametric sensitivity and uncertainty analyses Comparisons to Gold Standard data Expert reviews (DRG, ICAO CAEP, IRG, SAE A-21, …) Capability Demonstrations and Sample Problems Four-part Approach: GOAL: Environmental analyses are informed with the associated uncertainty from the tools, inputs and assumptions used in the analysis process AEDT Assessment Monte Carlo simulations Global Sensitivity Analyses Distribution Sensitivity Analyses Surrogate Models

12/1/ Next Steps Development 1.Continue database harmonization process 2.Continue migration of modules to.NET environment 3.Integrated graphical user interface (GUI); developed and coordinated with design review group (publicly available) Analysis 1.Support NASA NRAs 2.Continue Module- and System-level Assessment Continue stakeholder outreach Legacy Releases as required…

12/1/ Questions / Discussion FAA Environmental Tools web site: Christopher J. Roof U.S. Department of Transportation John A. Volpe National Transportation Systems Center Environmental Measurement and Modeling Division, RTV-4F 55 Broadway Cambridge, MA (617)

12/1/ Acronyms AEDT – Aviation Environmental Design Tool APMT – Aviation environmental Portfolio Management Tool CAEP – Committee for Aviation Environmental Protection BADA – Base of Aircraft Data CDA – Continuous Descent Arrival CESTOL - Cruise Efficient Short Take-Off and Landing aircraft DRG – Design Review Group EDMS – Emissions and Dispersion Modeling System EDS – Environmental Design Space EIS – Environmental Impact Statement EPA – Environmental Protection Agency FAA – Federal Aviation Administration GHG – Greenhouse gas GUI – Graphical User Interface ICAO – International Civil Aviation Administration ICD – Interface Control Document INM – Integrated Noise Model JPDO – NextGen Joint Planning and Development Office MAGENTA – Model for Assessing Global Exposure from Noise of Transport Airplanes NASA – National Aeronautics and Space Administration.NET – Microsoft framework NIRS – Noise Integrated Routing System NOx – Nitrogen Oxides SAE, A-21 – Society of Automotive Engineers, Aircraft Noise and Emissions Modeling Committee SAGE – System for assessing Aviation’s Global Emissions SST - Supersonic Transport UAS - Unmanned Aerial Vehicles VLJ - Very Light Jets