danial turbine.docx

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UNIVERSITY KUALA LUMPUR

MALAYSIAN INSTITUTE OF AVIATION TECHNOLOGY

Subject Code :

Subject : Turbine

Prepared For :

Prepared By :

Danial Syafiq

Date:

Introduction:



Gas Turbine Engine: Westinghouse J34-WE-36

General characteristics:

Type: Turbojet

Length: 112 in (2.84 m)

Diameter: 27 in (0.69 m)

Dry weight: 1207 lb (547.5 kg)

Components:

Compressor: Single-Spool, 11-stage Axial

Combustors: Annular

Turbine: 2-stage turbine

Performance:

Maximum thrust: 3400 lbf (15.12 kN)

Overall pressure ratio: 4.35:1

Specific fuel consumption: 1.04 lb/hr-lb

Thrust-to-weight ratio: 2.82:1

Objective:



To Differentiate Between Gas Turbine Engine and Reciprocating Engine

Overhauling Procedures .

To Get to Know How Disassembly of Gas Turbine Engine is Being Done.

To Know What to Inspect After Disassembling of Gas Turbine Engine , WhatClearance or Reading need to be Taken , What Components are require to be

Repair or Replace.

To Distinguish between Disassembling and Reassembling Procedures

Etc.

i. During Removal – Rear Compressor Housing is being Removed First

Then Followed by Front Compressor Housing.

ii. During Installation – The Other Way Around , Front Compressor

Housing is Reinstall First and Followed by

Rear Compressor Housing .

Tools & Equipment :

Thickness Gauge @ Filler Gauge

Socket Set & Extension

Masking Tape

Jack Screw

Philips Screwdriver

Flat Screwdriver

Mallet

Wire Cutter

Spanner Set

Magnifying Glass

Vernier Calliper



Disassembly:

1) Cooler Assembly

F igure 1: Removal of Cooler Assembly

2) Accessory Gearbox Assembly

F igure 2: Removal of Accessory of Gear Box



3) Front & Rear Compressor Housing

Figure 3:Removal of Front & Rear H ousing Assembly

4) Front & Rear Compressor Stator Vanes:

Figure 4.a: Compressor Housing without

Stator Vanes

Figure 4.b: Compressor Stator Vanes that

Been Removed



Inspection:

1) Physical Part No. Identification:

Result:

Component Physical Part

No.

IPC Figure - Index Quantity

Compressor Front

Housing

43J696-1 43J906-15 Figure 12 -5 1

Compressor Rear

Housing

43J303-3 585334-3 Figure 12 -27 1

Oil Cooler Assembly 19E452 22E771-1 Figure 7 -1 1

Power Takeoff

Gearbox

43J490-1 435919-5 Figure 16 – 43a 1

2) Illustrated Part Catalogue (IPC) Part No. Identification

Result:

Component IPC Part No. Figure Quantity

Combustion Liner 43J740 -12 Figure 21 – 95 1

1st

Stage Turbine

Blade

107T047 Figure 20 -7 47

2n

Stage Turbine

Blade

60E874-1 Figure 20-17 1

Compressor

Outlet Vane

Assembly

72J746-1 Figure 12 – 44 1

3) Visual I nspection Defect:

Compressor Housing

Compressor Stator Vanes



Result:

Compressor Housing:

1) Front Compressor Housing

Scoring on Compressor Lining

2) Rear Compressor Housing

Massive Fracture on Compressor Side Wall

Compressor Stator Vanes:



Overall Defects Found :

Dent

Blunted

Rust

Corrodes

Compressor Rotor Tip Clearance Checks:



Results:

STAGE MIN MAX AVERAGE OVERHAUL MANUAL LIMIT

1 0.013” 0.059” 0.036” MIN

0.030”

MAX

0.060”

2 0.016” 0.057” 0.039” MIN

0.030”

MAX

0.060”

3 0.030” 0.060” 0.044” MIN

0.030”

MAX

0.060”

4 0.022” 0.042” 0.035” MIN

0.030”

MAX

0.060”

5 0.019” 0.057” 0.041” MIN

0.030”

MAX

0.060”

6 0.025” 0.050” 0.037” MIN

0.030”

MAX

0.060”

7 0.024” 0.047” 0.037” MIN

0.030”

MAX

0.060”

8 0.040” 0.042” 0.041” MIN

0.030”

MAX

0.060”

9 0.040” 0.050” 0.044” MIN

0.030”

MAX

0.060”

10 0.028” 0.045” 0.040” MIN

0.030”

MAX

0.060”

11 0.027” 0.040” 0.038” MIN

0.030”

MAX

0.060”

Compressor Housing Torque Specification : 50 –

66 N.m



Accessory Gearbox Torque Specification : 120 -150 N.m

Conclusion:



Disassembly, Inspection & Reassembling of Gas Turbine Engine JE-34-

WE-36 was successfully completed with the help of our lecturer. We have encounter

several problems on disassembling and putting it together into one piece.

We were required to use Jack Screw as the Rear Compressor Housing was

very difficult to remove . Some of the fasteners thread were already worn . Somehow we

managed to disassemble the whole Compressor Housing .

On routine inspection, most of the compressor stator vanes had dent and

blunted on the leading edge . All of the fasteners need to be replaced . Compressor

Housing need to be recoated as corrosive may form on exposed surface . Dye Penetrant

Inspection were skipped as unavailability of the material in the workshop.

We had a hard time of reassembling the compressor housing , Front

Compressor Housing Fasteners Hole wont matched with Cooler Assembly . Trying it to

fit it in using mallet was the wrong way as it would create further damage or initiate

any crack to elongated . So We had to repeat ; lifting and fitting it slowly and

simultaneously . Overall , We found that the engine can only for practical or

maintenance purposes as it is no longer serviceable for operation.

danial turbine.docx

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