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PERFORMANCE TESTING OF A HIGHSPEED GEAR BOX OF LCA TEJAS
Presented by
G. Arunkannan (30505101009)
John Jerome Anthony (30505101027)V. Nandhagopal (30505101050)
Internal Guide External Guide
Prof. Anu Jacob Paul Dr.A.M.Junaid BashaSenior Lecturer Scientist F
HCE CVRDE
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Objective
To carry out the Performance testing of a High
speed Gear box CVRDE-2.
Tests include: Motoring Run Test
Performance Test
Starting Sequence Test Attitude Test
Post Performance Test
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IntroductionIntroduction
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SpecificationsSpecifications
Driven by :LCA powerplant (GEDriven by :LCA powerplant (GE--F404F404--F2J3)F2J3)
Power transmitted :185Kw(250HP)Power transmitted :185Kw(250HP)
Speed :16,810rpmSpeed :16,810rpm Weight :34.4kgWeight :34.4kg
Overall Dimensions: LengthOverall Dimensions: Length--720mm720mm
HeightHeight--450mm450mm
WidthWidth--120mm120mm
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FunctionsFunctions
Transmits starter drive from JFS to engineTransmits starter drive from JFS to engine
Transmits Accessory Drive from engine toTransmits Accessory Drive from engine to
Accessories vizAccessories viz:Hydraulic Pumps (2nos):Hydraulic Pumps (2nos)
:Generator(1no):Generator(1no)
:Jet fuel starter:Jet fuel starter
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ACCEPTED LUBEACCEPTED LUBE
PARAMETERSPARAMETERSS.noS.no PTO(RPM)PTO(RPM) Flow (Gpm)Flow (Gpm) PressurePressure
(bar)(bar)
(HOT)(HOT)
Temp rangeTemp range
CC
11 1200012000 4.04.00.80.8 7.57.511 4040 to 80to 80CC
22 1500015000 4.754.7511 8.58.51.51.5 4040 to 80to 80CC
33 1681016810 5.255.2511 9.259.251.51.5 4040 to 80to 80CC
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MAXIMUM VIBRATION LEVELSMAXIMUM VIBRATION LEVELS
AT VARIOUS POINTSAT VARIOUS POINTS
PointsPoints Vibrations (g)Vibrations (g)
StepStep--up gearboxup gearbox 11
PTO boomPTO boom 1.51.5
M1M1 2.52.5
M2M2 2.52.5
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BACKGROUNDBACKGROUND
PARAMETERSPARAMETERS AIMAIM
VIBRATIONVIBRATION PTOPTO MINIMIZEMINIMIZE
VIBRATIONVIBRATION--M1M1 MINIMIZEMINIMIZE
VIBRATIONVIBRATION--M2M2 MINIMIZEMINIMIZE
LOPLOP MINIMIZEMINIMIZE
LUBE PRESSURELUBE PRESSURE IN RANGEIN RANGE
FLOWFLOW MAXIMIZEMAXIMIZECASING PRESSURECASING PRESSURE MINIMIZEMINIMIZE
HOT TEMPERATUREHOT TEMPERATURE IN RANGEIN RANGE
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TEST SET UPTEST SET UP
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WORK CARRIED OUTWORK CARRIED OUT
Motoring Run Test:Motoring Run Test:--to verify the satisfactory running ofto verify the satisfactory running of
AMAGB of up to 16810 rpm.AMAGB of up to 16810 rpm.
Performance Record Test:Performance Record Test:to determine the performance of AMAGBto determine the performance of AMAGB
by incremental variation of power extractedby incremental variation of power extracted
by the aircraft accessories at different inputby the aircraft accessories at different input
speeds.speeds.
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Starting Sequence Test:Starting Sequence Test:
The Objective of this test is to check theThe Objective of this test is to check the
continuous performance of AMAGB which iscontinuous performance of AMAGB which is
subjected to periodical loading with thesubjected to periodical loading with the
starting torque, inertia of the engine rotor.starting torque, inertia of the engine rotor.
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Attitude Test:Attitude Test:
The objective of this test is to check andThe objective of this test is to check and
verify the satisfactory functioning of theverify the satisfactory functioning of the
lubrication system under all conditions oflubrication system under all conditions of
aircraft maneuvers like roll and pitch.aircraft maneuvers like roll and pitch.
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ResultsSpeed vs Hot Oil Temperature(HOT)
0
5
10
15
20
25
30
35
40
45
50
9100 11000 12000 13000 14000 15000 16000 16810 16000 15000 14000 13000 12000
Speed(rpm)
HotOilTemperature(
cycle 1
cycle 5
cycle 10
cycle 20
cycle 25
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Speed vs Flow
0
1
2
3
4
5
6
9100 11000 12000 13000 14000 15000 16000 16810 16000 15000 14000 13000 12000
Speed (rpm)
Flow(Gp
m
cycle 1
cycle 5cycle 10
cycle 20
cycle 25
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Speed Vs Pressure
0
2
4
6
8
10
12
9100 11000 12000 13000 14000 15000 16000 16810 16000 15000 14000 13000 12000
Speed (rpm)
Pressure
(ba cycle 1
cycle 5cycle 10
cycle 20
cycle 25
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Spee s L Oi Pressure LOP
0
0.5
1
1.5
2
2.5
3
3.5
4
4.5
9100 11000 12000 13000 14000 15000 16000 16810 16000 15000 14000 13000 12000
Spee rpm)
L
OiPressureLOP)(Ba
e 1
e 5
e 10
e 20
e 25
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Speed vs Vibration PTO
0
0.05
0.1
0.15
0.2
0.25
0.3
0.35
9100
1100
0
1200
0
1300
0
1400
0
1500
0
1600
0
1681
0
1600
0
1500
0
1400
0
1300
0
1200
0
Speed (rpm)
Vibration
PTO(g)
cycle 1
cycle 5
cycle 10cycle 20
cycle 25
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Speed b at n M2
0
0.2
0.4
0.6
0.8
1
1.2
1.4
9100 11000 12000 13000 14000 15000 16000 16810 16000 15000 14000 13000 12000
Speed pm)
VibationM2g cycle1
cycle5
cycle10
cycle20
cycle25
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Speed vs VibrationM1
0
0.2
0.4
0.6
0.8
1
1.2
1.4
1.6
9100 11000 12000 13000 14000 15000 16000 16810 16000 15000 14000 13000 12000
Speed(rpm)
VibrationM
1(g)
cycle1
cycle5
cycle10
cycle20
cycle25
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Gear box Vs Vibration (PTO) (g)
0
0.02
0.04
0.06
0.08
0.1
0.12
0.14
TOT-1 TOT-2 TOT-3 PT-5 PT-6 PT-9 PT-10 PT-11
Vibration (PTO) (g)
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Gear box vs Vibration (M1) (g)
0
0.05
0.1
0.15
0.20.25
0.3
0.35
0.4
TOT-1 TOT-2 TOT-3 PT-5 PT-6 PT-9 PT-10 PT-11
Vi i M1) (g)
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Gear rat ( 2) ( )
0
0.05
0.1
0.15
0.2
0.25
0.3
0.35
TOT-1 TOT-2 TOT-3 PT-5 PT- PT- PT-10 PT-11
Vibration (M2)( )
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Gear B v L w l pr essure (L )( ar)
00.5
1
1.5
2
2.5
3
3.5
4
4.5
TOT-1 TOT-2 TOT-3 PT-5 PT- PT- PT-10 PT-11
Low Oil pressure(LOP)( r)
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Gear box vs Flow (Gpm)
00.5
1
1.5
2
2.5
3
3.5
4
4.5
TOT-1 TOT-2 TOT-3 PT-5 PT-6 PT-9 PT-10 PT-11
Flow (Gpm)
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Gear box vs Hot Oil Temperature HOT (C)
0
10
20
30
40
50
60
TOT-1 TOT-2 TOT-3 PT-5 PT-6 PT-9 PT-10 PT-11
Hot Oil Temperature HOT (C)
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Conclusion
The performance test has been carried out andThe performance test has been carried out andthe results were found to be within the limits.the results were found to be within the limits.
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References
CVRDE/LCA/AMAGB/104
Gear design by Dudley
Aircraft Powerplants by Treager 6th
edition
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Thank You