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Flashcards in Power plant Deck (26)
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1
Q

Which engine is installed?

A

IAE V2500-A5

2
Q

What is the thrust output of the engine?

A

27.000 lbs

3
Q

What are the components of the LP stage?

A
  • Single stage fan
  • 4 stage LP compressor
  • 5 stage LP turbine
4
Q

What are the components of the HP stage?

A
  • 10 stage HP compressor

- 2 stage HP turbine

5
Q

Which rotor is connected to the accessory gearbox?

A

N2

6
Q

Which aircraft components are driven by the AGB?

A
  • Engine driven hydraulic pump
  • Engine generator
  • Engine fuel pump
  • Engine oil pump
  • Air starter
  • FADEC alternator
7
Q

How is the FADEC powered?

A

By aircraft power for 5 min on startup, then shutdown. Dedicated alternator >10% N2

8
Q

What are the three idle modes?

A
  • Modulated idle
  • Approach idle
  • Reverse idle
9
Q

When is approach idle selected?

A

In flight when flaps are extended

10
Q

How many igniters are used for automatic start?

A

One

11
Q

When will the ignition turn on/off in the automatic start sequence?

A

On - After dry crank sequence

Off - 43% N2

12
Q

What is the effect on thrust of FADEC reverting to degraded N1 mode?

A

N1 is defined as a function of TLA only, overboots can occur.

13
Q

How many igniters are used for a manual start?

A

2

14
Q

When is ignition automatically selected on?

A
  • Engine A/I on
  • TO/GA or FLEX selected
  • EIU failure
  • Approach idle selected
  • In flight sub-idle or surge
  • Engine master switch cycled ON-OFF-ON
15
Q

At what engine speed will the start valve close?

A

43% N2

16
Q

What faults will the auto start system abort for?

A
  • Hot start
  • Hung start
  • Stall
  • Wet start
17
Q

What is the max EGT during starting?

A

635°C

18
Q

How are the thrust reversers actuated?

A

Hydraulically

19
Q

What is the maximum continuous oil temperature?

A

155°C

20
Q

What is the minimum oil temperature for start?

A

-40°C

21
Q

What is the max starter duty cycle?

A
  • 2 cycles of 2 minutes each followed by a third 1 minute cycle.
  • 15 second pause between cycles.
  • 30 minute cooling after three attempts
22
Q

Will the manual start sequence be aborted by the FADEC for start faults?

A

No

23
Q

When do the pack valves close during the automatic start sequence?

A

When ENG MODE is selected to IGN/START

24
Q

When does the start valve open during the automatic start sequence?

A

When ENG MASTER switch is selected to ON

25
Q

What is the time limitation for operating with TOGA thrust?

A

2 engines - 5 minutes

1 engine - 10 minutes

26
Q

What is the minimum oil temperature for takeoff?

A

50°C