EcoAviation Washington, June 2010 Engines for Green Aviation’s Future Alan Epstein Vice President, Technology & Environment Pratt & Whitney
EcoAviationWashington, June 2010
Engines for Green Aviation’s Future
Alan Epstein
Vice President, Technology & EnvironmentPratt & Whitney
Evolution in By-Pass Ratio, Efficiency, & Noise
1990 20001950 1960 1970 1980 2010 2020Engine certification date
TurbojetsTurbojetsTurbofansTurbofans
Low bypassLow bypass
TurbofansTurbofansHigh bypassHigh bypass
Ultra high bypassUltra high bypass
•Lower fuel consumption so- Lower CO2- Lower NOx- Lower Cost GTFTM Engine
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Propulsion System Fundamentals
Fuel Burn
Fan Diameter
Noise
Low Bypass RatioHigher Fan Pressure Ratio
High Bypass RatioLower Fan Pressure Ratio
Low
High
AdvancedTurbofan
(ATF)
Better
5~6% better fuel burn
GearedTurbofan
(GTF)engine
5-10dB lower noise
2P&W Proprietary – Subject to restrictions on last pageNot subject to the EAR per 15 CFR ch. 1 part 734.3 (b)(3) of the EAR
0
-5%
-10%
-15%
-20%5 7 10 12 15
Bypass Ratio5 7 10 12 15
Bypass Ratio
1990s, 2000s component upgrades
1980s767/A300
1980s 737/A320
1990s777/A330
2000s787/A380
ENG
INE
ΔFU
EL B
UR
N
Single Aisle Twin Aisle4 Decades’ Evolution of Commercial Engines
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2010sGTFs
Fuel burn improvement 12-15%
CO2 emissions reduced by 3000 Tons per aircraft per year
NOx emissions cut in half
Noise levels of Stage 4 minus 20 dB
1,500 fewer airfoils
Lower maintenance cost
$1.5M annual cost savings per aircraft
Innovative New Engine Designs
The Comprehensive Approach to Economic and Environmental Operation
PurePower® Engine benefits
Gear
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Fan Drive Gear System
• 40,000 equivalent take-offs to date with no significant wear
Simple Design – Extraordinary Reliability
Gear Test Rig30,000 hp gear
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PurePower® Engines Look DifferentUltra-high Efficiency, Low Noise Fan
PurePower® Demo EngineV2500® Engine
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PurePower® Engines Are DifferentAdvanced Nacelle
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Three Interlocking Enabling TechnologiesProven in Extensive Ground & Flight Testing
2 +2 + 2 = 15% Improvement in Fuel Burn
Very Light Weight Reliable Gear
Light WeightExtra Efficient Fan
Advanced Nacelle
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30K Ground demoFlight weight design
Thrust in thousands of pounds (K)
2000 2010
40K Demo engine 11K Demo engine 30K Flight demos
PurePower® Engines20 Years of New Technology
Gear Test Rigs
1990
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New PurePower® PW1000G Powered Aircraft
Irkut MC-21EIS 2016 - 2018
Mitsubishi Regional JetEIS 2014
Bombardier® CSeries®
EIS 2014
Bombardier and CSeries are trademarks of Bombardier Inc.
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Fuel Burn
Fan Diameter
Noise
(Higher FPR)(Lower BPR)
(Lower FPR)(Higher BPR)
Low
High
Noise
Fuel Burn
TSFC
Fuel Burn
GTFEngine Next Generation
GTF Engine >2020
Weight& Drag
Turbofan
Add Value by Reducing Fuel Burn and NoisePropulsion for the 2020s and Beyond
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Long Runway for GTF Engine Improvement
AdvancedOpen Rotor
Geared Turbofan EngineAdvanced
GTFEngine
Ch 4
Base –5% –10%
– 20
– 25
– 30
– 35
–15% –20% –25% –30%
– 15
– 10
– 5
Noi
se (E
PN
dB)
Engine Fuel Consumption
1997 Reference
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Lower Noise
Lower CO2
0.40
0.50
0.60
0.70
0.80
0.90
0 2000 4000 6000 8000 10000
Design Range (nm)
Cru
ise
Mac
h N
umbe
rThe Value of Speed And Range
EMB170 737-800 757-200787-8
A380-800
SHORT MEDIUM LONG
TURBOFANS
A330-300
Q400
A400M
ATR72
TURBOPROPS
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Aircraft Configurations Must Generate ValueNew Aircraft Must Drop Ownership Cost By 15% or More
ReferenceV2500
1988 EIS
Adv GTFEngine-30% CostEIS 2020-2025
PW1000G GTF Engine-15% CostEIS 2013-2015
UnconventionalInstallations
2015 2020 2025 2030P&W Proprietary – Subject to restrictions on last page
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Gen 3 GTFEngine-45% CostEIS 2030-2035
MIT-Aurora-P&W NASA N+3 Design Concept70% Fuel Burn Reduction, -70dB Noise
Summary
• Engine innovation delivering green performance gains– ~15% fuel burn improvements entering service in 2013-16– ~30% fuel burn gains in 2025~2030
• New aircraft configurations may offer dramatic gains– Significant gain comes from optimization for low flight speed (M~.74)– Most attractive for shorter range applications– But, significant technical risk may require an X-plane first
• Quiet, geared ducted propulsion is the future– UHB dramatically drops noise and fuel burn & increases value– PurePower® Engines set a new standard for the next 30+ years
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