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Rolls-Royce Aero-Derivative Combustion Turbine Background
2-12
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
Exhaust Flow,
ISO, Gas Fuel
208.7 lb/sec
94.5 kg/sec
207.4 lb/sec
94.0 kg/sec
351 lb/sec
159 kg/sec
358 lb/sec
163 kg/sec
Exhaust
Temperature,
ISO, Gas Fuel
916 F
492 C
941 F
505 C
LPT Outlet Temp 801 F
427 C
LPT Outlet Temp 813 F
434 C
Compression
Ratio -
Compressor
Discharge to Inlet
20.8:1 21.0:1 35.0:1 35.5 : 1
Output End
(Drive End)
Hot End Driven by RT 62
power turbine through
reduction gearbox @
4880/1800/1500
Hot End RT61 Power Turbine
driven through reduction
gearbox 4800/1800/1500
Hot End directly driven by
LPT at 3600/3000
(Stagger on LPC blades
changed for 3000 rpm
operation)
Hot End directly driven by
LPT at 3600/3000
(Stagger on LPC blades
changed for 3000 rpm
operation)
Compressor
Stages
7 stage LP/IPC
6 stage HPC
7 stage LP/IPC
6 stage HPC same as Aero
Trent 700
LPC 2 Stages
IPC 8 Stages
HPC 6 Stages
LPC 2 Stages
IPC 8 Stages
HPC 6 Stages
Extractions
Bleed Valves Rear IPC
Bleed Valves Center HPC
LPC 18 Exit Bleed Doors
IPC 4 Bleed Doors Stage 8
HPC 3 Bleed Doors Stage 3
LPC 18 Exit Bleed Doors
IPC 4 Bleed Doors Stage 8
HPC 3 Bleed Doors Stage 3
Accessories
Gas / Air or hydraulic starters
are available
Anti-Icing feature deleted.
Continuous pulse air filter
used to minimize icing.
Gas / Air or hydraulic starters
are available
Gearbox mounted main
lubrication oil pump and the
starter/clutch assembly drive
shafts
Speed probes and manual
rotation feature
Gearbox mounted main
lubrication oil pump and the
starter/clutch assembly drive
shafts
Speed probes and manual
rotation feature
The inlet contains two rings of 20 nozzles each;
the inboard ring is used for off-line water wash
and the outboard ring is used for on-line water
washes.
Bearings,
Number and
Type. (all)
Continuously
Lubricated
IP Rotor 3 Bearings
HP Rotor 3 Bearings
Thrust Bearing Double Ball
(Duplex)
IP Rotor 3 Bearings
HP Rotor 3 Bearings
Thrust Bearing Double Ball
(Duplex)
3 Thrust (Ball) Bearings
5 Roller (Cylindrical Roller
Bearings
3 Thrust (Ball) Bearings
5 Roller (Cylindrical Roller
Bearings
Uses aircraft anti-friction rolling element bearing
lubricated by synthetic fluids. The industrial
power turbine uses mineral oil and requires
separate oil system
Starting Times:
to breaker
closure
to full load
Total time
8 Minutes to purge and
warm-up
2 minutes to baseload
10 Minutes Total for Start
8 Minutes to purge and
warm-up
2 minutes to baseload
10 Minutes Total for Start
16 minutes including Purge
and Warm-up;
10 minutes to Baseload
25-30 minutes Total for Start
10 minutes fast start to full
load
(no life limitation)