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Gulfstream GIV > Powerplant > Flashcards

Powerplant Flashcards

1
Q

Min oil temp for start

A

-40˚C

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2
Q

Max oil inlet temp

A

Continuous - 105˚C

15 min - 120˚C

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3
Q

Min oil temp to move power levers

A

-30˚C

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4
Q

Min oil pressure at idle

A

16 PSI

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5
Q

Min engine fuel temp

A

-40˚C

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6
Q

Max engine fuel temp

A

Continuous - 90˚C

15 min - 120˚C

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7
Q

Min oil press for takeoff

A

30 PSI (@ TO Pwr)

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8
Q

Minimum oil press to complete flight

A

97.5% HP (Max Cont) - 25 PSI
92% HP - 22 PSI
84% HP - 19 PSI
76% HP - 16 PSI

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9
Q

Acceptable Takeoff Power EPR Range

A

TO EPR ≤ .01 of rated EPR

TO EPR ≤ .05 of rated EPR

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10
Q

Airstart Ignition Duty Cycle

A

W/ASC 304 - NONE
W/O ASC 304 - 5 min on / 30 min off
30 sec on / 30 sec off - No Limitation

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11
Q

Max ground start TGT

A

700˚C Momentary (2 sec)

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12
Q

Max airstart TGT

A

780˚C Momentary (2 sec)

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13
Q 
Max Takeoff / Go-Around Power
LP
HP
TGT
Time
A

LP: 95.5%
HP: 99.7%
TGT: 716-800˚C

5 min / 10 min single engine

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14
Q

Max Continuous Power
LP
HP
TGT

A
  • LP: 95.5%
  • HP: 97.5%
  • TGT: 715˚C
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15
Q

Minimum Approach Idle

A

LP: —-
HP: 67%
TGT: —-

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16
Q

Minimum Ground Idle

A

LP: —-
HP: 46.6%
TGT: —-

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17
Q

Max Reverse

A

LP: —-
HP: 88%
TGT: 695˚C

No time limit
1 min every 30 min if no ASC 166

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18
Q

Max Overspeed

A

LP: 98.3%
HP: 102.6%
TGT: —-

20 sec

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19
Q

Max crosswind for engine start

A

30 Kt

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20
Q

Max TGT to initiate engine start

A

150˚C

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21
Q

Max tailwind for engine start

A

24 Kt

22
Q

“OIL PRESS LOW” CAS message illuminates when?

A

Oil press < 16 PSI

23
Q

Engine Starter Duty Cycle

A

30 sec ON / 30 sec OFF
30 sec ON / 30 sec OFF
30 sec ON / 15 min OFF

24
Q

Thrust Rating

A

13,850 #

25
Q

Max altitude for guaranteed start

A

25,000 MSL

26
Q

Airstart Envelope

A

≤ 25,000 MSL

200 - 324 KCAS

27
Q

Minimum altitude for autothrottles

A

Can be used for TO

Landing: 50’ AGL

28
Q

Automatic Idle Speeds (4)

A

Ground Idle: 46.6% HP
Flight Idle: 48% HP
Above 15,000’: 49.5-78% HP (up to FL450)
Approach: 67%

29
Q

Powerplant Make and Model Number

A

Rolls Royce Tay Mk 611-8

30
Q

What automatic shutdown protection feature is provided by the TAY 611-8?

A

LP shaft failure protection will shut the engine down and will lock the HP fuel cock in the OPEN position.

31
Q

What is the guaranteed minimum thrust rating on the TAY 611-8 engine?

A

13,850# @ 30º C

32
Q

What is indicated by illumination of the “ENG IDLE” light on the ground?

A

Engine idle is at approach idle (67% HP RPM)

33
Q

The amber EICAS indication identified as “SVO” should extinguish by what HP % RPM?

A

44.5% HP

34
Q

What does the green EICAS indication “IGN” indicate?

A

The ignition relay is energized

35
Q

What is the maximum altitude and the airspeed envelope for a guaranteed engine air start?

A
  • 25,000 feet

- 200 - 324 KIAS

36
Q

During an auto throttle takeoff, when does the auto throttle system go to EPR HOLD mode?

A

At 60 knots indicated airspeed, regardless of EPR setting

37
Q

When does the red “OIL PRESS LOW” CAS message illuminate?

A

When the oil pressure < than 16 psi

38
Q

What are the autothrottle engagement requirements? (4)

A
  • Isolation Valve Closed
  • Autothrottles Armed
  • TO / GA Mode Selected
  • EPR ≥ 1.17
39
Q

What conditions (9) would cause the autothrottles to disengage?

A 
Autothrottle Arm Switch
Selection of Opposite AT Computer
Authrottle Disengage Switches
Autothrottle Engage Switches (second push)
Manual Override
Isolation Valve Open
Alternate Flap Selection
LP Split > 20%
Either HP < 41%
40
Q

If an engine fails after V1 during takeoff, when are the flaps retracted?

A

At V2 + 10 and 1500 feet AGL minimum

41
Q

On takeoff, with autothrottles engaged and FLCH selected, when is the power set to climb power?

A

At 400 feet AGL minimum altitude

42
Q

What is the limitation concerning the use of the engine starter?

A
  • Continued use of the starter is limited to 3 crank cycles, with a maximum of 30 sec per cycle
  • Delay 3 minutes between start attempts
  • After 3 cycles, delay use of starter for at least 15 minutes
43
Q

What is the proper procedure if the green “IGN” mnemonic does not illuminate on the EICAS during an engine start?

A

The start may be salvaged by selecting AIR START IGN to ON prior to opening the HP fuel cock

44
Q

When performing an engine start during high tail wind conditions, what is an indication that the LP rotation is positive?

A

HP rotation stabilized

45
Q

During an engine start, when should engine ignition (light-off) occur?

A

Within 10 seconds after selecting the HP fuel cock to OPEN

46
Q

What is the correct procedure to follow if the start valve has not closed by the time that engine idle speed (46.6%) is reached during an engine start?

A

Accomplish the start valve failure checklist in the QRH

47
Q

If during an engine start, the EVM system momentarily displays values above the alert level (0.60), what action is required?

A

No action is required, this normally occurs on the first start of the day

48
Q

When does the “HOLD” mode of autothrottle operation occur?

A
  • On takeoff, at approximately 60 knots until another vertical mode is selected after attaining 400 feet AGL.
  • Above 400 ft the servos are repowered and the power levers move to a thrust rating appropriate to the vertical mode selected on the guidance panel
49
Q

When is the “START” position of the HP fuel cocks used?

A

This position is never used for flight crew operations

50
Q

What is the time limitation on the air start ignition system?

A
  • 30 sec on, 30 sec off OR 5 min on, 30 min off

- There is no time limitation with ASC 304 installed

51
Q

When should you check the oil level?

A

Within 30 minutes of engine shutdown at termination of the last flight of the day or at intervals not exceeding eleven (11.0) hours cumulative flight time.

Gulfstream GIV (21 decks)

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