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C-5M Engine Run > Ranges and Limits > Flashcards

Ranges and Limits Flashcards

1
Q

Engine Starter Duty Cycle

A

5 minutes on; 2 minutes off
5 minutes on; 2 minutes off
5 minutes on; 10 minutes off

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2
Q

Starter Inlet air pressure

A

25 PSI minimum after starter valve is open and pressure has stabilized on manifold gage

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3
Q

Time to light-off

A

20 seconds after N2 reaches 15%

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4
Q

Starting time, EGT increase (light off) to idle

A

2 minutes maximum

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5
Q

Starting Oil pressure

A

positive indication

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6
Q

Idle oil pressure

A

10 PSID minimum

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7
Q

80% N2 oil pressure

A

22 - 52 PSID

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8
Q

Oil pressure at takeoff power setting

A

29 - 80 PSID

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9
Q

Normal Oil consumption

A

0.28 qt/hr

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10
Q

Scavenge oil temperature at normal operation

A

-50 degrees C to 160 degrees C

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11
Q

Maximum oil consumption

A

0.56 qt/hr

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12
Q

Scavenge oil temperature after 15 minutes

A

160 degrees C to 175 degrees C (shutdown engine)

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13
Q

Maximum scavenge oil temperature

A

175 degrees C (shutdown engine)

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14
Q

Hydraulic pump pressure at normal operation

A

3000 (+/- 150) PSIG

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15
Q

Maximum hydraulic pump pressure

A

3150 PSIG

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16
Q

Maximum time at temperature, takeoff power

A

5 min

17
Q

Engine speed, core and fan at idle

A

N1 - 21% to 26% rpm

N2 - 59% to 67% rpm

18
Q

Engine speed, core and fan at normal operation

A

N1 - 21% to 117.5% rpm

N2 - 59% to 112.5% rpm

19
Q

Starting EGT

A

750 degrees C

20
Q

Transient EGT (except starting)

A

960 degrees C

21
Q

Maximum reverse EGT

A

960 degrees C

22
Q

Acceleration time from idle to takeoff power

A

12 seconds maximum

23
Q

Engine temperature normalization time

A

3 minutes at idle after starting and before shutdown

24
Q

DC loadmeter at normal operation

A

0 to 1.0

25
Q

DC loadmeter caution

A

1.0 to 1.5

26
Q

DC loadmeter maximum

A

1.5

27
Q

DC voltmeter minimum

A

22.5v

28
Q

DC voltmeter caution

A

22.5v to 25v

29
Q

DC voltmeter at normal operation

A

25v to 30v

30
Q

DC voltmeter maximum

A

35v

31
Q

AC loadmeter (1.0=90 KVA) at normal operation

A

0 to 1.0

32
Q

AC loadmeter (1.0=90 KVA) caution

A

1.0 to 1.25

33
Q

AC loadmeter (1.0=90 KVA) maximum

A

1.25 to 1.5

34
Q

RTRU 1 and RTRU 2 voltage range

A

28 (+/- 3) DC volts

35
Q

Multi-engine operation, common throttle alignment

A

Within 1/2 knob

C-5M Engine Run (3 decks)

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