FETT overall Perfo. Engine modules overview

1.

SCAC Engine Technical Audit
2. FETT overall Perfo
Engine modules overview
Moscow - December 05th to 07th, 2006
SaM146 ENGINE AUDIT
Dec 05th to 07th, 2006
PowerJet, PowerJet, NPO-Saturn Proprietary Information - Unauthorized Disclosure, Use, or Export are Prohibited.

2. FETT overall performance

SCAC Engine Technical Audit
FETT overall performance
Engine modules overview
FETT configuration between production engine
SaM146 ENGINE AUDIT
Dec 05th to 07th, 2006
PRODUCTION
FETT
Improved fan blade (flutter
margin)
Fan blade ref: A6MAR detuning
Improved booster
Basic booster
Based strut frame
Axial strut frame
Aft spinner
Telemetry adaptation
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3. FETT overall performance

SCAC Engine Technical Audit
FETT overall performance
Engine modules overview
FETT configuration between production engine
PRODUCTION
SaM146 ENGINE AUDIT
Dec 05th to 07th, 2006
FETT
Improved CHP
Basic CHP configuration (core
test1)
Monobloc combustor and HP
Turbine case
Combustor case + HP Turbine
case
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4. FETT overall performance

SCAC Engine Technical Audit
FETT overall performance
Engine modules overview
FETT configuration between production engine
Production configuration :
Disk 1 optimization for maintenance
Weight improvement
Thickness and material for mixer
SaM146 ENGINE AUDIT
Dec 05th to 07th, 2006
PowerJet, Snecma, NPO-Saturn Proprietary Information - Unauthorized Disclosure, Use, or Export are Prohibited.
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5. 2-2 Objectives and testing/Activities performed

SCAC Engine Technical Audit
2-2 Objectives and testing/Activities performed
FETT Main objectives:
Engine safety readiness: mechanic and dynamic
Whole engine and modular performance.
Engine readiness operability: Start, stability, acceleration and
deceleration.
Engine prediction optimization for Compliance/Production engine.
FETT secondary objectives:
Noise evaluation
Nozzle sizing for serial nozzle production
SaM146 ENGINE AUDIT
Dec 05th to 07th, 2006
PowerJet, Snecma, NPO-Saturn Proprietary Information - Unauthorized Disclosure, Use, or Export are Prohibited.
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6. 2-2 Objectives and testing/Activities performed

SCAC Engine Technical Audit
2-2 Objectives and testing/Activities performed
Objectives and testing/Activities performed
Challenging test:
First engine with different partners, new test cell
(instrumentation acquisition, monitoring, engine control)
Test program based on various Test Requests.
Heavy instrumentation engine.
Feedback:
HP restriction due to basic design.
Difficulty to managed instrumentation routing
Less confidence in measurement as usual
Nacelle leak (seal missing)
SaM146 ENGINE AUDIT
Dec 05th to 07th, 2006
PowerJet, Snecma, NPO-Saturn Proprietary Information - Unauthorized Disclosure, Use, or Export are Prohibited.
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7. 2-2 Objectives and testing/Activities performed

SCAC Engine Technical Audit
2-2 Objectives and testing/Activities performed
Main activities:
Engine Warm-up and break-in
Full
chronology:
• Starting procedure optimization
• Engine bleed system calibration (including Transient Bleed device)
• Engine Variable systems calibration & preliminary optimization (VSV, HPT
clearance control), in steady state and transient conditions
• LP turbine cooling optimization
• Performance Power Calibration and preliminary exhaust nozzle effect
• Components endoscopic inspections following each critical phase of the testing,
including Instrumentation check and refurbishment.
SaM146 ENGINE AUDIT
Dec 05th to 07th, 2006
PowerJet, Snecma, NPO-Saturn Proprietary Information - Unauthorized Disclosure, Use, or Export are Prohibited.
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8. 2-2 Objectives and testing/Activities performed

SCAC Engine Technical Audit
2-2 Objectives and testing/Activities performed
Main results:
Start behavior: Tamb effect (isa-5°C to isa+15°C), starter N2 speed
starter shut off (8100 to 8900 N2 RPM), air starter pressure effect (1.5 to
3.5 bar), light on (3000 to 4000 N2 RPM) fuel flow light on (110 to 150
kg/h).
Correct speed increase, good engine control: fuel flow, starter and
HPSOV management.
Engine behavior: functionality validation (first engine)
Partial acceleration and deceleration done with and without active
HPTACC law.
Good engine control for a first engine, according to the
restriction: regulation law (fuel flow, VSV, VBV, TBV…), identification
of transfer function, speed trajectory,…
SaM146 ENGINE AUDIT
Dec 05th to 07th, 2006
PowerJet, Snecma, NPO-Saturn Proprietary Information - Unauthorized Disclosure, Use, or Export are Prohibited.
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9. 2-2 Objectives and testing/Activities performed

SCAC Engine Technical Audit
2-2 Objectives and testing/Activities performed
Main results:
Engineering test:
Instrumentation effect: Evaluation of pressure losses
LPT thermal behavior
Engine running time: 112 hours
99 starts, around 200 crank
NTO SJ100-75 reach
SaM146 ENGINE AUDIT
Dec 05th to 07th, 2006
PowerJet, Snecma, NPO-Saturn Proprietary Information - Unauthorized Disclosure, Use, or Export are Prohibited.
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