Today s Discussion Noise: the most important thing for civil aviation
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1 P&W PurePower Engines: Noise The Most Important Thing Alan Epstein Vice President, Technology and Environment Pratt & Whitney Chicago O'Hare Noise Compatibility Commission Chicago, September Today s Discussion Noise: the most important thing for civil aviation Why noise is so important Pratt & Whitney response PurePower Engines Program status and update 2 1
2 Aeronautical Challenges in % Reduction 3 Noise in % Reduction we may rest assured that the tremendous racket that is at present associated with the aeroplane plays a considerable part in prejudicing the public against these machines A silent engine must inevitably be a step in the right direction The Aero July
3 June 1959 American Planes: The Lessons of History By Grover Loening Noise abatement is now one of our most irritating problems, but we should know by now that abatement is not the answer to noise. The answer is to design a power plant with as much a fundamental limit on noise, in its original design, as there is today on its fuel consumption and weight. 5 Most Recent Noise About Noise Headlines in April-May 2017 Residents demand respite from Teterboro aircraft noise USA Today-Apr 25, 2017 Medford residents tired of Logan Airport noise NECN-May 15, 2017 Maryland congressional delegation asks for National Airport noise study WJLA-May 8, 2017 Tired of San Carlos Airport noise? Patch.com-Apr 18, 2017 Airport Noise: Is there a solution? San Diego Free Press-May 3, 2017 Nelson Airport expansion: Watchdog group raises concerns about increased noise Nelson Mail-May 16, 2017 Trump visits raise noise complaints near Boca airport Sun Sentinel- Apr 28,
4 Noise in Perspective 1960s Airplane Lawn Mower 2010s Airplane Rock Band High Speed Train Urban Office Normal Speech 60 Threshold of Hearing 0-10 dba 30 Public Library, Whisper 7 Community Noise Reduction Much achieved B707 A380 B777 A320ceoA320neo A320neo B ER B707 turbojet A320ceo A380 Chicago O Hare International Airport Takeoff from runway 10L (13,000 ) Analysis by KB Environmental Sciences using AEDT 8 4
5 Chicago O Hare 70%+ reduction in noise footprint Today s Aircraft Geared Turbofan -Powered Airplane 9 Eras of Engine Architecture >10% Steps in efficiency Ultra-High Bypass Geared Turbofan (2015) OVERALL EFFICIENCY Single Spool (1937) Dual Spool Turbojet (1951) High Bypass Turbofan (1969)
6 Noise versus Fuel Burn Historical view at constant thrust Higher Noise Fuel Burn? Lower Current Tech Fuel Burn Opt Advanced Tech Fan Diameter ~ Bypass Ratio (Really 1/ Fan Pressure Ratio) 11 A Challenge to Retrofit a Much Larger Engine Image courtesy of JetBlue 12 6
7 Engine Diameter Grows as Length Shrinks 35,000 lbs thrust (today) versus 47,000 lbs (1976) 13 PurePower Geared Turbofan Engine Gear 14 7
8 PurePower Engines: Significant NO X Margin NO X emissions 50% 35% 15 PurePower Engines on Five Major Platforms 81 fan 12:1 bypass ratio PW1100G-JM PW1400G-JM MC21 A319neo A320neo A321neo 73 fan 12:1 bypass ratio PW1900G PW1500G E190-E2 E195-E2 56 fan 9:1 bypass ratio PW1700G PW1200G CS100 CS300 E175-E2 MRJ 70 MRJ
9 PurePower Engines Delivering CSeries MRJ Ejets-E2 MC-21 5 Aircraft Platforms A320neo 8,000+ Orders and commitments 80+ Customers 75% Reduction in noise footprint 50% Reduction in Regulated emissions 16% Reduction in engine fuel consumption Annual Operator Savings >$1M per Aircraft 17 GTF Engine-Powered Fleets 67 aircraft delivered to 13 operators (Number of aircraft) Volaris (1) Spirit (5) Air Astana (1) ANA (2) Lufthansa (5) airbaltic (4) HK Express (3) VivaAerobus (2) Swiss Air (9) Indigo (22) GoAir (5) China Southern (6) LATAM (2) 18 9
10 Community Noise Reduction How much more is needed? B ER A380 A320neo A320ceo A320neo-6 EPNdB 19 Lowering FPR to Reduce Noise and Fuel Burn FAA CLEEN program with NASA participation Fan test at NASA Glenn facility Engine test at Pratt & Whitney facility CLEEN: Continuous Lower Energy, Emissions, and Noise Technologies developed in collaboration with NASA 20 10
11 21 11
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