View
217
Download
2
Category
Preview:
Citation preview
Rolls-Royce Proprietary information
Trusted to deliver excellence
© 2014 Rolls-Royce plc
The information in this document is the property of Rolls-Royce plc and may not be copied or communicated to a third party, or used for any purpose other
than that for which it is supplied without the express written consent of Rolls-Royce plc.
This information is given in good faith based upon the latest information available to Rolls-Royce plc, no warranty or representation is given concerning
such information, which must not be taken as establishing any contractual or other commitment binding upon Rolls-Royce plc or any of its subsidiary or
associated companies.
Mark Thomas CEng FRAeS
Chief Engineer – Technology and Future Programmes
Next Generation Engines
Rolls-Royce Proprietary Information
Rolls-Royce Proprietary information
2050 environmental goals
007204
Rolls-Royce Proprietary Information
Rolls-Royce proprietary information
Trent
engine
family
A successful journey
Rolls-Royce Proprietary Information
Rolls-Royce Proprietary information
Relentless pursuit of improvements
Rolls-Royce Proprietary Information
Rolls-Royce Proprietary information
0.3
0.35
0.4
0.45
0.5
0.55
0.6
0.65
0.7Sp
ecif
ic F
uel
Co
nsu
mp
tio
n lb
/hr
/ lb
f @
0.8
Mn
Thermal “Cycle”
Efficiency
Propulsive
Efficiency
0.700
Current High
Bypass ratio
Engines
Approaching
Theoretical
Limit of
Propulsive
Efficiency
Higher bypass
ratios
Novel LP Systems
Higher Pressures,
Temperatures,
Efficiencies
Novel Core
Systems
Approaching
Theoretical Limit of
Thermal Efficiency
Efficiency improvements - cycle potential
Rolls-Royce Proprietary Information
Rolls-Royce Proprietary information
Driving for higher efficiency
Can we align the video and the next slide
Rolls-Royce Proprietary Information
Rolls-Royce Proprietary information
UltraFanTM – further technology advances
Rolls-Royce Proprietary Information
Rolls-Royce Proprietary information
Nacelle and Fan Case
Slimline Nacelle Thinner, Shorter
Outer Cowls
Pitch Change
Mechanism
EXPORT CONTROLLED – NLR per EAR99
Very High
Bypass
Ratio
Reduction Gearbox
Reverse thrust mode requires
flow to turn sharp lips of cold
nozzle & core splitter
Variable Pitch Fan Advantages
• Facilitates low pressure ratio fan
operability
• Eliminates requirement for VAN
• Enables deletion of thrust reverser
• Facilitates slimline nacelle
Variable Pitch Fan Challenges
• Fan aerodynamics
• Complex rotating pitch change
mechanism
• Challenging reverse thrust
Variable pitch UltraFanTM
Rolls-Royce Proprietary Information
Rolls-Royce Proprietary information
Next generation product evolution
Trent XWB Advance UltraFan™ / Open Rotor
World’s most
efficient engine
11+ 15+ Bypass Ratio
60+ 70+ Overall Pressure Ratio
20%+ 25%+ Efficiency relative to Trent 700
2020+ 2025+ Technology EIS Readiness
007638
Rolls-Royce Proprietary Information
Rolls-Royce proprietary information
Leading technologies and capabilities
Lightweight CTi Fan
System & Externals
Additive Layer
Manufacturing
Advanced
Materials
VHBR
Enablers
Advance Core
Architecture
(CMCs, Ni Alloys)
Aerothermal
Excellence
Lean Burn
Combustion
Fuel Burn
Environment
Maintenance
Key Benefits
Lifecycle Cost
Virtual Engine
(Design & Validation
in the Computer)
Advanced
Manufacturing
Research Centres
Electrical,
Controls, EHM
& Systems
Integration
Rolls-Royce Proprietary Information
Rolls-Royce proprietary information
Comprehensive full scale demonstration
ALPS Advance ALECSYS
EFE UltraFan
Rolls-Royce Proprietary Information
Rolls-Royce Proprietary information
Novel propulsion concepts
Image courtesy of NEWAC
Rolls-Royce Proprietary Information
Rolls-Royce Proprietary information
Integration challenges and opportunities
Trent XWB Advance UltraFan™ Open Rotor
Source: Boeing/NASA Source: Airbus
Rolls-Royce Proprietary Information
Rolls-Royce Proprietary information
Gas turbine &
generator
Electrical energy
storage system
Electrically driven
Propulsive fans
Hybrid turbo-electric propulsion
E-Thrust Concept
Rolls-Royce Proprietary Information
Recommended