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16 Cards in this Set
- Front
- Back
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List the 5 major components that make up the GT |
Compressor Combustor HP Turbine Power Turbine Exhaust Assembly |
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How many stages does the compressor have? |
16 |
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What IGV’s are variable? |
Stages 1-6 |
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What stages is bleed air taken from? |
8 |
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What parameters determine the VSV position? |
NGG CIT VSV Position feedback |
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How many fuel nozzles and igniters are there? |
30 fuel nozzles and 2 spark igniters |
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How many stages does the HP turbine have and what does it drive? |
2 and it drives the compressor to become self sustaining |
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How many stages does the LP turbine have? |
6 |
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What transmits power to the CCG? |
High Speed Coupling Shaft |
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What is the type, name and location of oils used by the LOSCA? |
Mobil Jet 2, synthetic oil for scavenging OEP 89, mineral oil for CCG and cooling |
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What does the BATTLE OVERRIDE bypass? |
1. PT Speed limiting 2. PT Torque limiting 3. PLA Actuator system failure 4. Oil scavenge temp. high S/D 5. 300r system reset latch out 6. Fuel s/o v/v current monitor circuits 7. GG speed step-to-idle on high vibration |
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Describe the air flow path: |
Jalousies, Intake filters, Blow-in doors, Plenum, Silencers, Bell Mouth, IGV’s, Compressor, Diffuser, Combustor, HP turbine, LP turbine, 90 degree exit to port stack |
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List the 9 safety precautions for entering the GT enclosure: |
- Gain permission from MEO - GT S/D or at idle - Fire extinguish inhibit switch positioned to INACTIVE - Enclosure doors shall be open - Contact with hot GT parts should be avoided - Ear defenders to be worn - Sentry at door - Do not remain in enclosure when starting or motoring - Isolate electrical equipment you may come into contact with |
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What are the Automatic S/D’s? |
1. Manual Activation 2. HALON activation 3. < 1200 in 20 seconds 4. < 204C in 40 seconds 5. < 4500 in 90 seconds 6. Flame out < 204C 7. High T5.4 918+-5C 8. FMP < 12 bar for 10 seconds 9. FSOV U/O current 10. Low CCG L/O Pressure <0.5b instant or <1 in 15 seconds 11. LOSCA pressure < 0.42b 12. High Scavenge Oil Temp >170C 13. Overspeed PT >3960+-40 14. PT speed signal loss (A+B channels) 15. ECM power failure
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T5.4 Parameters: |
Start up: 204C in <40 seconds Start up: 732C max Idle: 538C Max Operating: 0-904C Inform WOMT: 890C Request to reduce lever: 900C Alarm: 904C Water wash: <4C - 93C max |
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Name all of the full power parameters: |
Shaft 180rpm NGG 9500rpm NPT 3600rpm T5.4 904C max Power output 22.5MW |
