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KC-130J > Engine > Flashcards

Engine Flashcards

1
Q

3 major assemblies

A

Power section
Propeller gearbox
Torquemeter

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2
Q

Unique features

A

2 FADEC
GMAD
NIU

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3
Q

Primary purpose of Propeller gearbox

A

Transmit shaft power from torquemeter to propeller, reduce shaft rpm, provide power to GMAD

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4
Q

GMAD provides drive pads for

A

GOOPH

G: AC Generator
O: Oil pressure pump
O: overspeed governor
P: PCU
H: Hydraulic pump

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5
Q

Torquemeter primary function

A

Transmit engine output to PGB and supply reference to the FADECS

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6
Q

Power unit accessory drive (PUAD)

A

FASSFA

F: FPMU
A: Alternator Stator
S: Starter
S: scavenge pump
F: FCOC
A: Accessory drive sump

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7
Q

FCOC

A

Fuel cooled oil cooler

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8
Q

Controlling FADEC is determined by:

A
  1. Engine start with WOW, selection automatically alternates
  2. Serious FADEC fault automatic shifts to alternate FADEC
  3. ALT selection on control panel
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9
Q

NG

A

Gas generator speed

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10
Q

NP

A

Power turbine speed

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11
Q

MGT

A

Measured gas temperature

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12
Q

Engine PMA provides electrical power for the FADEC after engine speed reaches:

A

40%

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13
Q

Propeller speed governing is accomplished by:

A

Varying blade angle or engine fuel flow

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14
Q

Nacelle interface unit (NIU)

A
  1. Provides 1553 & RS422 communications
  2. Provides indications of oil temp, px & quantity, oil cooler flap position and fuel flow
  3. Controls oil cooler flap and engine/nacelle anti-ice valves
    4.provides engine health & usage monitoring
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15
Q

A ___ gallon oil tank located in each ____

A

20

Nacelle

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16
Q

The 20 gallon oil tank has ___ oil capacity with the remaining being air

A

12 gallon

17
Q

0.66 gallon dedicated reservoir for

A

Auxiliary feather pump oil supply

18
Q

Oil is gravity fed from tank, through a shutoff valve to:

A

GMAD/PGB pump & Engine power section pump

19
Q

Oil cooler augmentation supplements normal oil cooling during:

And uses:

A

Exceeded ground operations

14 stage bleed air when the per levers are below flight idle

20
Q

Oil cooler augmentation is operating when:

A

1.Oil cooler flap position is greater than 80%
2. Oil temp is above 80 C
3. Airspeed less than 50 knots
4. Pwr levers less than flight idle
5. Weight on wheels

21
Q

ACAWS alerts If oil cooler augmentation system fails on

A

Caution!

Damage to the oil cooler flap occurs unless the crew opens the cooler flap full open

22
Q

Starting system consists of

A

Air turbine starter and starter regulating and shutoff valve

23
Q

Engines started using a combination of

A

Electrical power and low pressure bleed air

24
Q

Min bleed air pressure for start

A

22 PSI

25
Q

For start MGT must be below

A

175 C

26
Q

During start:

At 14% NG

A

The FADEC arms the fuel ignition circuits
4 sec later, ignition is energized and shutoff valve opens to start fuel flow

Normal time from light up to stabilized NG is 20-25 sec

27
Q

Starter cutout occurs at

A

65% NG

28
Q

Time from starter switch select to NP on speed

A

30 sec

29
Q

After motor, wait ___ after NG reaches __

A

30 sec

0

30
Q

On the ground, AUTO mode opens the oil cooler flap when the oil cooler outlet temp is greater than

A

75 C

And retracts flap when temp is less than 60

31
Q

Coolest oil temperature is achieved when flap is

A

100 percent open

32
Q

In air with gear extended, AUTO mode opens oil cooler flap when temp is greater than ___ and retracts when temp is less than ___

A

82

76

33
Q

In flight, with gear retracted, AUTO mode:

A

Closes oil cooler flap for optimum in flight cooling

34
Q

PMA

A

Permanent magnet alternator

35
Q

PMA powers

A

FADEC and engine exciters

36
Q

Starter duty cycle

A

70 sec cycle, 5 cycle max then 20 min cooldown

37
Q

On start:
NG in
EPSI
GPSI

A

10 sec for NG

EPSI 15 sec after NG

GPSI 15 sec after NP

38
Q

Pulling fire handle (9 things)

A
  1. Nacelle shutoff valve closed
  2. Engine oil shutoff valve closed
  3. Extinguishing AGENT switching avail
    4.Fire extinguisher directional control valves positioned
    5.firewall shutoff valve closed
    6.firewall hydraulic shutoff valves are closed
    7.BAU commands prop aux feather pump for 20sec
  4. Data bus message sent to FADEC to feather prop and shut down engine
  5. Shutoff valve in the engine FPMU, backup power 1/4 is utility battery; 2/3 is avionics battery

KC-130J (10 decks)

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