Brainscape's Knowledge GenomeTM

Browse over 1 million classes created by top students, professors, publishers, and experts.


See full index

Epps > Powerplant And Fuel > Flashcards

Powerplant And Fuel Flashcards

1
Q

Power plant description

A

Reverse flow, dual spool, free turbine

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
2
Q

4 stages of jet engine

A

Suck
Squeeze
Bang
Blow

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
3
Q

Igniters on this engine?

A

Primary and secondary

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
4
Q

How does the engine work? (What drives what?)

A

Power turbines drive prop shaft

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
5
Q

Where is ITT measured?

A

Power turbines

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
6
Q

Where is the chip detector located?

A

Reduction gearboxes, behind the prop

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
7
Q

Np

A

Prop rotation (rpm)

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
8
Q

When is the air separator opened?

A

Start, Taxi, takeoff,
approach, landing
Icing and precipitation

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
9
Q

What happens to ITT when the separator is opened?

A

Increases

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
10
Q

Is the prop self governing?

A

Yes, except at spool up

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
11
Q

What fuel pumps are located on the engine assembly?

A

High pressure and low pressure

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
12
Q

Which generator is the starter on the Ng and Ngx aircraft?

A

2

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
13
Q

What is stabilized Ng after start?

A

63%

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
14
Q

What does the torque limiter measure?

A

Oil pressure

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
15
Q

How many fuel nozzles?

A

14

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
16
Q

What happens when the high pressure fuel pump fails?

A

Engine stops

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
17
Q

What does the fuel-oil heat exchanger do?

A

Warms cold fuel

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
18
Q

What are 3 ways to move fuel on this AC?

A

Motive flow
Gravity flow
Fuel pumps

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
19
Q

What provides fuel during startup?

A

Primary and secondary manifolds

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
20
Q

RPM at idle on ground

A

1060

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
21
Q

Prop speeds at what rpm are prohibited?

A

Below 950

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
22
Q

How does beta work?

A

Oil is pulled from the beta valve, which causes the propeller pitch to flatten

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
23
Q

What happens to prop pitch on shutdown?

A

Prop feathers, provided power is on

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
24
Q

Where are the igniters located?

A

4 o clock and 9 o clock positions

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
25
Q

Where does the oil level need to be to operate?

A

Above the red

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
26
Q

What is the engine fire detector made of?

A

Helium filled with a hydrogen core

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
27
Q

What is the only way to control prop pitch?

A

Feather on condition lever

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
28
Q

What kind of temp increase will trigger a fire alarm?

A

General overheat of 250 C

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
29
Q

What actuates the fire switch?

A

Localized temperature increase of 500 C

30
Q

What lights illuminate with the fire test?

A

2 master caution
2 master warning
1CAWS Engine Fire
1 CAWS Fire Detect

31
Q

If fire is suspected, what system must be turned off?

A

Air cycle machine

32
Q

When will you get the aural ‘fire-fire-fire’ during a fire test?

A

Only if GPU plugged in

33
Q

Idle maintains a minimum prop pitch of what?

A

6 degrees

34
Q

What is the MOR lever?

A

Manual override

35
Q

What will happen if CL accidentally moved to feather and then back to idle?

A

Hot start

36
Q

Why would you need to use the MOR lever?

A

Fuel control unit failure

37
Q

What is Ng?

A

Engine speed

38
Q

What is torque?

A

Measures engine torque pressure

39
Q

What happens at engine start?

A

Fuel pumps operate, prop spins, oil pressure comes up

40
Q

During start, when is the condition lever moved to the ground idle position?

A

At 14% Ng

41
Q

What indicates a hot start?

A

Rapidly rising ITT to 1000

42
Q

What is a hung start?

A

No ITT or Ng rise within 10 seconds of CL to ground idle

43
Q

Takeoff power is limited to how long?

A

5 minutes

44
Q

Max cruise and climb horsepower?

A

1000

45
Q

Max takeoff torque?

A

44.4

46
Q

Max takeoff ITT

A

800 C

47
Q

Max cruise ITT

A

720 C

48
Q

Max cruise torque

A

36.9

49
Q

Where can you look to see what types of fuel and oil are approved for the engine?

A

Pratt and Whitney service bulletin

50
Q

WHat are 3 propeller protections from overspeed?

A

Prop governor
Overspeed governor
Nf governor

51
Q

What are the tanks in the fuel system?

A

Main tanks
Collector tanks

52
Q

How is fuel balancing achieved?

A

Automatically or manually

53
Q

What keeps the fuel system running once the aircraft is started?

A

Motive flow from pumps in the collector tanks

54
Q

What allows fuel flow via gravity from the main tanks to the collector tanks?

A

Flapper valve

55
Q

What pumps move fuel from the main to the collector tanks via motive flow or low pressure pump?

A

Transfer jet pumps (1 ea wing)

56
Q

Is there a backup for failure of the low pressure boost pump?

A

Yes, one of the electric fuel boost pumps

57
Q

When engine is running, what delivers fuel to the engine driven pump?

A

Delivery jet pumps

58
Q

What fuel valve would prevent the fuel inspection door from being closed?

A

Maintenance shutoff valve

59
Q

What psi causes the filter nipple to pop?

A

8 psi

60
Q

Where is the firewall shutoff valve?

A

Fuel inspection panel, LH side of AC

61
Q

If the EIS fuel gauge fails, what do you lose?

A

Fuel balancing computer

62
Q

What level triggers the fuel low level switches?

A

Below 133 lb (20 gal)

63
Q

What fuel pressure triggers a CAWS message?

A

Below 2 psi

64
Q

What provides fuel to the engine under normal conditions?

A

Low pressure fuel pump via jet pumps and motive flow

65
Q

How many fuel pumps in the system?

A

8 total
1 high pressure
1 low pressure
2 electric
2 transfer jet pumps
2 delivery jet pumps

66
Q

Where are the electric boost pumps located?

A

Collector tanks

67
Q

What are the electric fuel pump switch positions?

A

Auto and on

68
Q

What does an illuminated left or right fuel boost pump CAWS message (green) in flight indicate?

A

Fuel is being transferred from tank to tank

69
Q

What would indicate loss of the low pressure engine driven boost pump in flight?

A

Both green electric pump CAWS lights and a master caution

70
Q

With loss of the low pressure pump, what else do you lose?

A

Auto balancing

71
Q

If the low pressure pump is lost, but you need to balance fuel, how could it be accomplished?

A

Pull receiving tank CB (if directed by proceedure)

72
Q

How is contaminated fuel expelled?

A

Burned and exhausted out (?)

Epps (13 decks)

Brainscape helps you reach your goals faster, through stronger study habits.
© 2024 Bold Learning Solutions. Terms and Conditions