iae selectone engine differences
TRANSCRIPT
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V2500 SelectOneTM
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• Identify and describe the differences of the A5 and SelectOneTM engines.
• Explain the servicing activities related to the SelectOneTM engine.
Section ObjectivesAt the end of this section, the operator will be able to:
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SelectOneTM
The upgrade package aims to give:
Up to 1% Improvement in SFC.
Up to 20% Time on wing Increase.
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How do you identify the SelectOneTM ?
MODEL: V2500-A5
SERIAL NO:V15001
IAN NO:Installation Arrangement
NumberSQ02(Goodrich FMU)
SQ03(Woodward FMU)
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MODEL: V2500-A5
SERIAL NO:V15001
IAN NO:Installation Arrangement
NumberSQ02(Goodrich FMU)
SQ03(Woodward FMU)
How do you identify the SelectOneTM ?
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SelectOneTM
New EEC software High Pressure Compressor-HPC
High Pressure Turbine-HPT
Low Pressure Turbine-LPT
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New EEC software High Pressure Compressor-HPC
High Pressure Turbine-HPT
Low Pressure Turbine-LPT
SelectOneTM
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Electronic Engine Controller
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Electronic Engine Controller
SelectOneTM EEC requires SCN20 as minimum standard.SCN20 & 20A intermixable with SCN19 and above.Data Entry Plug
wired for A5/ SelectOneTM
SCN20
•HPC accommodation.
•Eliminates EPR Fluctuations.
•Improve transient detection logic.
•Improve Altitude Deceleration Stability.
•Improve Fuel Consumption at Cruise.
•Enhance quick relight.
Initial Engines operating with SCN20 software, thereafter SCN20A software.
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EEC - SCN20
• HPC accommodation: Introduces a dedicated variable stator vane (VSV) schedule for SelectOneTM.
• Eliminates EPR Fluctuations: Avoids EPR fluctuations by hysterisis bandwidth revision of 7C bleed cycling.
• Improve transient detection logic: Enhance robustness of transient detection logic by the introduction of a new architecture.
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• Improve Altitude Deceleration Stability: Increase compressor stability margin by raising the Engine 7C handling bleed valve trip speeds at altitude.
• Improve Fuel Consumption at Cruise: Reduce the Engine 7A bleed steady state trip speeds for high altitude.
• Enhanced quick relight: Provide the capability to derate the fuel scheduling during quick relight.
EEC - SCN20
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• Software enhancement to modify the 7C bleed schedule only on the ground during Take-off role.
• Software clearance and subsequent upload scheduled for year end.
• Modifies Engine Acceleration schedule.
EEC - SCN20A
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High Pressure Compressor
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High Pressure Compressor
• Temperature reduction at HPC delivery - T3; improving emissions and turbine entry - T4.
• Giving better EGT Margin.
• Which will lead to increased time on wing.
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HPCElliptical leading edge and improved surface finish-stators & rotors.
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HPC
New Variable Stator Vane (VSV) system.
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HPC
Damper wire deletion Rotors 6-8.
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HPC
Locking blade redesign.
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HPCElliptical leading edge and improved surface finish-stators & rotors. Locking
blade redesign.
New Variable Stator Vane (VSV) system.
Damper wire deletion Rotors 6-8.
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HP Turbine
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HP Turbine
Improved efficiency and reduced fuel burn by:
• Reduced HPT cooling.
• Improved sealing.
• Better Coatings.
• Redistributed cooling flows.
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High Pressure Turbine
Redistributed cooling.
Improved sealing.
Redesigned Stage 1 Outer Air Seal (OAS).
New casting, restagger to balance number 3 bearing spool load.
Modified internal cooling. Platform cooling
Added cooling, improved cooling. Improved coating
Addition of a Brush Seal to reduce leakage of air on NGV OD.
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High Pressure Turbine
Redistributed cooling.
Improved sealing.
Redesigned Stage 1 Outer Air Seal (OAS).
New casting, restagger to balance number 3 bearing spool load.
Modified internal cooling. Platform cooling
Added cooling, improved cooling. Improved coating
Addition of a Brush Seal to reduce leakage of air on NGV OD.
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Turbine - HPT1
V2500-A5
V2500 SelectOneTM
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LP Turbine
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LP Turbine
Improved efficiency and reduced fuel burn by:
• Re-staggered LPT vane.
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Low Pressure Turbine
Re-stagger of LP Turbine Stage 3 Vanes
LP Turbine Stage 3 Rotor
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Servicing
• Borescope Inspection limits same as A5
• Rotor 3 clapper inspection is the same as latest Post SB72-487 standard
• Compressor wash is no different from A5
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Servicing
• VSV lubrication: There is no routine task.
• SelectOneTM requires SCN20 as minimum standard.
• SCN20 & 20A intermixable with SCN19 and above, across wing.
• Current A5 and SelectOneTM engines intermixable across wing.
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• Identify and describe the differences of the A5 and SelectOneTM engines.
• Explain the servicing activities related to the SelectOneTM engine.
Section ObjectivesAt the end of this section, the operator will be able to:
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• Identify and describe the differences of the A5 and SelectOneTM engines.
• Identify and describe the differences of the SelectOneTM and the SelectOneTM retrofit engines.
• Explain the servicing activities related to the SelectOneTM engine.
Section ObjectivesAt the end of this section, the operator will be able to:
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Any Questions
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Elliptical Leading Edge
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SelectOneTM
Super Polished Blades
A5
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Improved Surface Finish - Stator Stages.
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V2500 SelectOneTM
R8 Locking BladeRedesign
Circular profile on rotor 8 only, provides greater stress relief
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Variable Stator Vanes
New lever arms and unison rings with ball-end bearings
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Variable Stator Vanes
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Rotor Stages 6-8 damper Wire Deletion