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Embraer Overview 2007

EMISSIONS AND AVIATION. Embraer Overview 2007. Sep.07. Contents. Aviation and the Environment Embraer Roadmap. Aviation’s Emissions Today. Aviation is responsible for 12% of total transport CO 2 emissions. Road transport generates 76% according to the Stern Review*.

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Embraer Overview 2007

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  1. EMISSIONS AND AVIATION Embraer Overview 2007 Sep.07

  2. Contents • Aviation and the Environment • Embraer Roadmap

  3. Aviation’s Emissions Today Aviation is responsible for 12% of total transport CO2 emissions. Road transport generates 76% according to the Stern Review*. * Stern Review Annex 7c

  4. Emissions Efficiency Evolution Along Time • Aviation boasts occupancy rates above 70%, more than double the rate for road and rail transportation. • In the past 40 years, aviation hydrocarbon emissions have been reduced by 90%. • In the past 15 years, nitrogen oxides (NOx) generated by aircraft engines have been reduced by 50%. Source: www.enviro.aero

  5. Emissions Contribution by Aircraft Size Commercial aircraft with less than 110 seats are responsible for 9% of total aviation or 0.26% of global CO2 emissions. Global Emissions 2006 Aviation Emissions 2006 *References: FleetPC 31Dec2006; NBAA Industry Statistics; NASA Report Scheduled Civil Aircraft Emission Inventories for 1999.

  6. Embraer Roadmap

  7. Technology Roadmap

  8. Short Term Actions – Fleet Renewal 20% Lower Emissions by Replacing Old jets* by New 70-100 Seaters -20% Emissions *Study considers direct replacement of the entire fleet of BAe146-100/200/300, RJ70/85/100, B737-200/500, F70/100, DC9-30, MD87 by the the E-Jet with similar capacity.

  9. New Technologies Technologies can further reduce Emissions: • Aerodynamics: • CFD • MDO • Wing/Fuselage Design • Alternative Fuels: • Biokerosene LIFT (aerodynamic) F U T U R E A I R C R A F T DRAG (aerodynamic) TRUST (propusion efficiency) • Advanced Systems: • More Electric • Advanced Avionics and Flight Control • Advanced Structures: • Composites • Metallic • Advanced Materials WEIGHT (structural efficiency)

  10. Design Trade-offs Trade-offs are inevitable. Targets for new regulations must consider definition of priorities. • Bigger engines requires higher pressure ratios • Higher engine pressure ratio and bypass ratio reduces: • Fuel burn (CO2) • Reduces Noise (lower exhaust jet velocity). • Higher pressure ratio results higher flame temperature • Reduces CO & HC • Increases NOx Figure extracted from CAEP SG Emissions Workshop, 9 September 2002 Presentation “Technology Transition” - W. Dodds/H.Aylesworth

  11. Thank you!

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