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Session3_Walthe présentation enjeu et techno

Are limited terms of fuel burn noise and pollutant

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Unformatted text preview: y improvements in terms of fuel burn, noise and pollutant emissions are limited terms of fuel burn, noise and pollutant emissions are limited TETM - 10.04.2006 24 Improved Environmental Compatibility by Pollutant Reduction 140 JT-3 120 ICAO NOX [g/kN] JT-8 ICAO 95 JT-9 ICAO 96 PW4000 BR700 100 CFM56 CAEP/4 80 CFM56 DAC V2500 CF6-50 60 CF6-80 GE-90 40 RB211 RR Trent E3E 20 10 20 CAEP/4: New Engines from 2004 30 Pressure ratio 40 50 Technology Target 2020 Technology Target 2020 IICAO-limits decreased continuously iin the past ;; further ttightening anticipated ffrom 2007 CAO-limits decreased continuously n the past further ightening anticipated rom 2007 Technology ttargets 2020 pursue a reduction off NOx-emissions by 80% related tto ICAO 96 limit Technology argets 2020 pursue a reduction o NOx-emissions by 80% related o ICAO 96 limit TETM - 10.04.2006 25 Internationally Regulated Noise Emissions Cumulative margin relative to Chapter 3 [EPNdB] Chapter 2 20 Chapter 3 0 Proposed Chapter 4 -20 Average noise level of aircraft in service -40 Technological Target 2020 Technological Target 2020 -60 1960 1970 1980 1990 2000 2010 Year of certification Considerable progress in noise reduction since implementation of aircraft noise standards Considerable progress in noise reduction since implementation of aircraft noise standards Major benefits resulted from high by-pass ratios, noise absorbers and special nozzle types Major benefits resulted from high by-pass ratios, noise abs...
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