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Rolls-Royce Aero-Derivative Combustion Turbine Background
2-16
Design
Characteristic
RB211 – 6562
(RB211-24G Gas Generator
with RT62 Power Turbine)
RB211 – 6761
(RB211-24GT Gas
Generator with RT61 Power
Turbine)
Trent 60 DLE
(Derivative of AERO 800 on
Boeing 777 and Airbus
A330)
Trent 60 WLE
(Derivative of AERO 800 on
Boeing 777 and Airbus
A330)
Reliability, Maintainability, Durability
Comments
Distinguishing
Features
(from earlier
models)
RT62 Power Turbine
Single Crystal Turbine Blades
(HPT & IPT)
Radial Can-Annular DLE
Combustor
The Radial DLE combustor is
a radical departure from the
aero version with DLE
designed in up front
Phase 5 annular combustor
(similar to Aero Trent)
Number of
Combustors
Single fully annular
combustor with steel outer
casing and NIMONIC 263
liner
Eighteen fuel nozzles
Series Staged 9 Can Type
DLE radially mounted pre-mix
lean burner chambers with a
single fuel injector for each
can
8 Can Type DLE with reverse
flow Perpendicular to the Axis
of Rotation
3 stage lean burn DLE
Combustor Materials-INCO
625 and Haynes 230
24? fuel burners on standard
Phase 5 Combustor
Dual Fuel Capable
Emission
Capabilities
170+ ppmv NO
x
@ 15% O
2
DLE 25 vppm NOx on gas
42 vppm NO
x
on liquid fuel
with water injection
25 ppm CO
25 ppmv NOx, 25 ppmv CO
at 15% O2 on gas
Water injection is required for
LF operation
NO
x
- 25 vppm
CO < 32 vppm
(diffusion burner with water
injection)
DLE combustor uses 2 stages with precise control
of the fuel flow division rather than trying to
control the air flow
RB211 has over 250,000 DLE fired hours of
operation
Emission
Abatement
Configuration
Standard combustor - DLE
retrofit available?
DLE Combustion System -
Standard Combustor
Available?
DLE Combustion System
Water injection thru combined
fuel / water injectors
RB211 uses WI for NOx control on LF
Control System Flexitrend by En-Tronic Flexitrend by En-Tronic Woodward Woodward
Utilizes time proven control systems with digital
electronics
Proven operation in remote areas with operator-
less control and protection.
Options
Integrated auxiliary drive fro
lube oil, seal oil and hydraulic
systems