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ESWS > MAIN PROPULSION ENG > Flashcards

MAIN PROPULSION ENG Flashcards

1
Q
  1. HOW MANY GTM’S DO WE HAVE ON BOARD/PER ENGINEROOM?
A

4/2

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2
Q
  1. WHAT IS THE FULL NAME OF THE GTM’S?
A

GENERAL ELECTRIC LM 2500 GAS TURBINE ENGINE

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3
Q
  1. WHAT DOES “LM” STAND FOR?
A

LAND MARINE

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4
Q
  1. WHAT TYPE OF COMPRESSOR DOES THE LM 2500 HAVE AND HOW MANY STAGES IS IT?
A

AXIAL FLOW COMPRESSOR/16 STAGES

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5
Q
  1. WHAT TYPE OF CUMBUSTOR DOES THE LM 2500 HAVE?
A

ANNULAR CUMBUSTOR

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6
Q
  1. HOW MANY FUEL NOZZLES DOES THE LM 2500 HAVE?
A

30

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7
Q
  1. HOW MANY STAGES DOES THE LP POWER TURBINE HAVE?
A

6 STAGES

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8
Q
  1. HOW MANY STAGES DOES THE HP POWER TURBINE HAVE?
A

2 STAGES

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9
Q
  1. WHAT DOES AGB STAND FOR?
A

ACCESSORY GEAR BOX

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10
Q
  1. NAME THE EQUIPMENT MOUNTED ON THE AGB.
A

MAIN LUBE OIL PUMP, LUBE OIL SCAVENGE PUMP, FUEL PUMP,
STARTER, AIR/OIL SEPARATOR

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11
Q
  1. HOW MANY HORSEPOWER IS EACH LM 2500 CAPABLE OF PRODUCING?
A

25,000 HORSEPOWER EACH

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12
Q
  1. WHAT DOES MRG STAND FOR?
A

MAIN REDUCTION GEAR

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13
Q
  1. WHAT IS THE PURPOSE OF THE MRG?
A

TAKES THE HIGH SPEED LOW TORQUE OF THE LM2500’S AND CONVERTS IT TO LOW SPEED HIGH TORQUE

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14
Q
  1. WHAT ARE THE 6 EXTERIOR COMPONENTS ATTACHED TO THE MRG?
A

LUBE OIL ATTACHED PUMP, CRP ATTACHED PUMP, SHAFT TURNING GEAR, LOCK SHAFT DEVICE, DEHUMIDIFIER, OD BOX

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15
Q
  1. WHAT IS THE CLASSIFICATION OF THE MRG?
A

DOUBLE INPUT, SINGLE OUTPUT, DOUBLE REDUCTION, DOUBLE HELICAL, LOCKTRAIN, ARTICULATED

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16
Q
  1. DEFINE EACH OF THE 6 PARTS OF THE CLASSIFICATION.
A

DOUBLE INPUT IS TWO LM2500’S GOING INTO THE MRG.
SINGLE OUTPUT IS ONE SHAFT COMING OUT OF THE MRG.
DOUBLE REDUCTION IS MRG HAS FIRST REDUCTION GEARS AND A SECOND REDUCTION GEAR TO REDUCE TWICE.
DOUBLE HELICAL IS THE ANGLE OF THE GEAR TEETH IN A “V” SHAPE TO REDUCE NOISE.
LOCKTRAIN IS WHEN ONE GEAR MOVES ALL GEARS MOVE.
ARTICULATED MEANS GEARS ARE OFF SET SO A GEAR TOOTH DOES NOT MESH IN THE SAME SPOT ALL THE TIME, PREVENTS UN-EVEN WEAR.

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17
Q
  1. WHAT IS THE PURPOSE OF A THRUST BEARING?
A

ABSORBS THE AXIAL THRUST OF THE SHAFT AND TRANSMITS IT TO THE HULL OF THE SHIP

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18
Q
  1. HOW MANY THRUST BEARINGS DO WE HAVE AND WHERE ARE THEY LOCATED?
A

2/STBD SHAFT IN AUX2, PORT SHAFT IN SHAFT ALLEY

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19
Q
  1. WHAT IS THE PURPOSE OF A LINE SHAFT BEARING?
A

ABSORBS THE RADIAL THRUST OF THE SHAFT, PREVENTS BOWING OF THE SHAFT

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20
Q
  1. HOW MANY LINE SHAFT BEARINGS DO WE HAVE AND WHERE ARE THEY LOCATED?
A

3/ONE IN MER2, TWO IN SHAFT ALLEY

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21
Q
  1. WHAT IS THE MRG RATIO?
A

21.35 TO 1

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22
Q
  1. WHAT IS THE LEGNTH OF THE STBD AND PORT SHAFTS?
A

STBD: 228 FEET, PORT: 168 FEET

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23
Q
  1. WHAT ARE THE THREE FUNCTIONS OF 2190 TEP LUBE OIL?
A

LUBERICATION, HYDRAULIC, COOLING

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24
Q
  1. WHAT DOES 2190 TEP MEAN?
A

2 SERIES OIL WITH A 190 VISCOSITY, TURBINE EXTREME PRESSURE

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25
Q
  1. WHAT IS THE PURPOSE OF THE MRG LUBE OIL SYSTEM?
A

TO LUBERICATE THE MRG

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26
Q
  1. WHAT IS THE PURPOSE OF THE SYNTHETIC LUBE OIL SYSTEM?
A

PROVIDES 23699 SYNTHETIC LUBE OIL TO THE LM 2500’S

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27
Q
  1. WHAT TYPE OF OIL IS USED IN THE SYNTHETIC LUBE OIL SYSTEM?
A

23699 SYNTHETIC LUBE OIL

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28
Q
  1. WHAT ARE THE THREE MAJOR HAZARDS ASSOCIATED WITH 23699 SYNTHETIC LUBE OIL?
A

DERMITITIS, PARALYSIS, CANCER

29
Q
  1. WHAT DOES CRP STAND FOR?
A

CONTROLABLE REVERSABLE PITCH

30
Q
  1. WHAT IS THE PURPOSE OF CRP?
A

ALLOWS THE SHIP TO GO IN THE REVERSE DIRECTION WITHOUT CHANGING THE ROTATIONAL DIRECTION OF THE SHAFT.

31
Q
  1. WHAT TYPE OF OIL DOES THE CRP SYSTEM USE?
A

2190 TEP LUBE OIL

32
Q
  1. WHAT DOES HOPM STAND FOR?
A

HYDRAULIC OIL POWER MODULE

33
Q
  1. WHAT IS THE PURPOSE OF THE HOPM?
A

DIVIDES CRP OIL INTO CONTROL AND POWER OIL

34
Q
  1. WHAT IS THE FUNCTION OF CONTROL OIL?
A

ACTUATES THE VALVE ROD, WHICH CONNECTS TO THE HUB ASSEMBLY

35
Q
  1. WHAT IS THE FUNCTION OF POWER OIL?
A

ACTUATES THE PROPELLER BLADE MOVEMENT

36
Q
  1. WHAT DOES “OD” STAND FOR WHEN REFERRING TO THE OD BOX?
A

OIL DISTRIBUTION

37
Q
  1. HOW MANY GRAVITY HEAD TANKS DO WE HAVE AND WHERE ARE THEY LOCATED?
A

3/ MER1, MER2, 3 GEN

38
Q
  1. WHAT IS THE PURPOSE OF THE GRAVITY HEAD TANKS?
A

THE NORMAL SUPPLY OF FUEL FOR YOUR GTG’S AND ALLOWS FOR A 5 MINUTE COOLDOWN PERIOD FOR THE GTM’S IN AN EMERGENCY

39
Q
  1. HOW MANY FUEL SERVICE TANKS DO WE HAVE?
A

4 TOTAL, 2 PER ENGINE ROOM

40
Q
  1. HOW MANY FUEL STORAGE TANKS DO WE HAVE?
41
Q
  1. WHAT IS THE FLASHPOINT FOR ALL NAVY FUELS?
42
Q
  1. WHAT ARE THE 2 TYPES OF FUEL ON BOARD?
A

F-76 AND JP-5(F-44)

43
Q
  1. IN AN EMERGENCY SITUATION, CAN JP-5 BE USED AS A SUBSTIUTE FOR F-76?
44
Q
  1. WHAT IS THE PURPOSE OF THE FUEL COALESERS?
A

FILTERS OUT WATER AND SMALL SEDIMENT

45
Q
  1. WHAT IS THE PURPOSE OF THE FUEL PRE-FILTERS?
A

FILTERS OUT LARGE PARTICULATE MATTER/SEDIMENT

46
Q
  1. WHAT ARE THE 4 FUNCTIONS OF BLEED AIR?
A

START AIR, PRAIRIE AIR, ANTI-ICING, MASKER AIR

47
Q
  1. WHAT IS THE PURPOSE OF MASKER AIR?
A

MASKS THE SHIP’S MACHINARY NOISE

48
Q
  1. WHAT IS THE PURPOSE OF PRAIRIE AIR?
A

MASKS THE SHIP’S PROPELLER NOISE, DISGUISES SHIP’S SIGNATURE

49
Q
  1. WHAT STAGE OF THE COMPRESSOR ON THE LM 2500 SUPPLIES CUSTOMER BLEED AIR?
A

16TH STAGE

50
Q
  1. WHAT STAGE ON THE ALLISON 501 K-34 COMPRESSOR SUPPLIES CUSTOMER BLEED AIR?
A

14TH STAGE

51
Q
  1. HOW MANY MASKER AIR EMITTER BELTS DO WE HAVE AND WHERE ARE THEY LOCATED?
A

3/ LOCATED UNDERNEATH THE SHIP

52
Q
  1. WHAT DOES LPAC STAND FOR?
A

LOW PRESSURE AIR COMPRESSOR

53
Q
  1. HOW MANY LPAC’S DO WE HAVE AND WHERE ARE THEY LOCATED?
A

3/ ONE IN MER1, TWO IN MER2

54
Q
  1. WHAT ARE THE 4 MODES OF THE LPAC?
A

LEAD(125 MODE), LAG(120 MODE), STAND BY(115 MODE), SHORE AIR(90 MODE)

55
Q
  1. WHAT TYPE OF ENGINE SERVES AS THE PRIME MOVER FOR THE GENERATOR?
A

ALLISON 501 K-34 MOD. 9130

56
Q
  1. WHAT TYPE OF COMPRESSOR DOES THE ALLISON 501 K-34 HAVE AND HOW MANY STAGES DOES IT HAVE?
A

AXIAL FLOW TYPE COMPRESSOR/ 14 STAGES

57
Q
  1. ALLISON 501 K-34 WHAT STAGES ON THE COMPRESSOR SUPPLIES BLEED AIR?
A

5TH, 10TH, 14TH

58
Q
  1. WHAT TYPE OF CUMBUSTOR DOES THE ALLISON 501 K-34 HAVE?
A

CAN-ANNULAR

59
Q
  1. HOW MANY FUEL NOZZLES DOES THE ALLISON 501 K-34 HAVE?
60
Q
  1. HOW MANY STAGES DOES THE POWER TURBINE HAVE ON THE ALLISON 501 K-34?
61
Q
  1. WHAT IS THE GENERATOR RATED AT?
A

450 VOLTS, 60 HZ, 3,000 KW, 4,800 AMPS, 3 PHASE, .8 POWER FACTOR

62
Q
  1. WHERE ARE THE GTG’S LOCATED?
A

AUX1, MER2, 3GEN

63
Q
  1. HOW MANY SWITCHBOARDS DO WE HAVE AND WHERE ARE THEY LOCATED?
A

3/ AUX1, MER2, 3GEN

64
Q
  1. WHICH SWITCHBOARD IS THE ONE FOR SHORE POWER?
A

2 SWITCHBOARD

65
Q
  1. HOW MANY SHORE POWER BREAKERS DO WE HAVE?
66
Q
  1. NORMALLY, HOW MANY SHORE POWER CABLES DO WE USE INPORT?
67
Q
  1. WHAT IS EACH SHORE POWER CABLE RATED AT?
A

400 AMPS EACH

68
Q
  1. HOW MANY LOAD CENTERS DO WE HAVE?
69
Q
  1. WHERE CAN YOU CONTROL THE GTG FROM?
A

CCS@EPCC, SWITCHBOARD, LOCALLY@FADAC LOCOP

ESWS (15 decks)

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