Anna Univ Presentation

8/4/2019 Anna Univ Presentation

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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


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


Flow (Gpm)


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Gear box vs Hot Oil Temperature HOT (C)

0

10

20

30

40

50

60


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

Documents

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