Brainscape's Knowledge GenomeTM

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


See full index

M15 > M15.13 > Flashcards

M15.13 Flashcards

1
Q

What are the three main engine controls?

A
  • engine start controls
  • forward thrust controls
  • reverse thrust controls
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
2
Q

What is the start switch used for?

A

To switch fuel on and off and to switch ignition on during engine start

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

What happens when the reverse thrust lever is pulled upwards?

A

The reverse thrust equipment on the engine is deployed

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

What happens when the thrust reverse lever is pushed downwards?

A

The thrust reverser equipment is stowed away

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

What does the engine start lever turn on?

A

The ignition and fuel supple to the combustion chamber

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

How is fuel supplied?

A

Via a high and low pressure shut-off valve

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

What type of valve is the low pressure fuel shut-off valve?

A

An electric motor driven valve

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

When would the low pressure fuel shut-off valve illuminate and when would it go off?

A

The light illuminates when the valve is closed and goes out when the valve is open.

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

When would the high pressure fuel shut-off valve open?

A

It opens and closes in conjunction with the engine start lever

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

what does the mechanical thrust control system transmit?

A

The thrust lever input signals to the fuel control unit on the engine

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

What are the forward thrust levers also called?

A

The throttles

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

What are the main positions for the thrust levers?

A

Idle and take-off

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

Where is the thrust reverse levers located?

A

At the top of the forward thrust lever

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

What are the main positions of the reverse thrust levers?

A

Idle and full reverse thrust

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

Where area rack and pinions found?

A

At the thrust control drum in the engine pylon and at the fuel control unit

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

Why is a friction brake used in the forward thrust controls?

A

To keep the throttle control system in a selected position

17
Q

What are the three positions for a mechanical and electrical reverse thrust?

A
  • the normal position (stowed)
  • reverse idle (activate reversers)
  • full reverse throttle (increase engine power)
18
Q

What is the throttle interlock system used for?

A

It stops the thrust being adjusted while the reverse thrusters are deploying or stowing

19
Q

How many separate thrust control signals are sent to the control unit from the control levers?

A

2 due to safety reasons

20
Q

How many resolvers are there for each thrust control lever?

A

2

21
Q

What is the job of a resolver?

A

To convert angular direction of the input lever to an electrical signal

22
Q

What is the job of the thrust lever lock system?

A

It makes sure that the forward thrust lever and the reverse thrust lever cant be used at the same time

23
Q

What is start ignition?

A

When the ignition is only used for start up of the engine

24
Q

What is continuous ignition?

A

When the engine has harsh external conditions that could lead to a flame-out of the combustion

25
Q

Why does each engine have two ignition systems?

A

For safety reasons

26
Q

When is the two ignition system used?

A
  • one of the systems is supplied from emergency power
  • one of the systems is used during start ignition
  • both is used for continuous ignition
27
Q

What part of the ignition system should you never touch?

A

The output of the ignition exciter including the igniter lead contacts

28
Q

Where are the igniter plugs located in the combustion chamber?

A

Below the centre line

29
Q

When would you adjust the immersion depth of the igniter plug?

A

When the bushing must be changed

30
Q

What do two blue rings on igniters indicate?

A

That the igniter is made of beryllium oxide which is toxic (don’t touch with bare hands)

31
Q

What type of wire is used inside of ignition lead?

A

A copper wire

32
Q

What type of insulation is used in a igniter lead?

A

Silicon rubber

33
Q

Why is the igniter lead air cooled?

A

When the copper wire increases temperature the resistance also increases

34
Q

What are the two systems for gas turbine engine starts?

A

Electrical and pneumatic (APU is the only electrical start)

35
Q

What is a start system used for?

A

To get the necessary conditions which is need in the combustion chamber

36
Q

When does the engine starter switch off?

A

When the engine has started and goes passed the self sustaining speed

37
Q

Where is the starter shut-off valve located?

A

The lower area of the engine

M15 (15 decks)

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