Brainscape's Knowledge GenomeTM

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


See full index

Mechanics Mk4 > Chapter 3 - Power Plant > Flashcards

Chapter 3 - Power Plant Flashcards

1
Q

What does an engine front mounting consist of?

A

Torque tube

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

What loads does the torque tube carry?

A

Horizontal and torsional

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

Where is most of the engine weight carried through?

A

The rear mountings

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

How many engines are there on a Mk4?

A

3

No. 1 & 2 on the left, No.3 on the right

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

Name the 6 Modules of an engine

A 
Module 1 - Air Intake and Compressor
Module 2 - Combustion Chamber and Gas Generator
Module 3 - Power Turbine 
Module 4 - Drive Shaft and Torque Meter
Module 5 - Accessories Gearbox
Module 6 - IPS
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
6
Q

What does IPS stand for and what does it do?

A

Inlet Particle Separator
Uses centrifugal force to remove the unwanted particles from entering the engine and expels it through the exhaust and allows clean air to enter.

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

What does Module 1 provide?

A

Intake controls the air flow entering the engine
Compressor compresses air so it is suitable for combustion
Module 1 provides mounting for module 5 & provides LP air for air start system, ECS and compressor wash

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

What does Module 2 provide?

A

Stabilises airflow
Mixes air with fuel and combusted
Provides hot air for anti-icing

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

What does Module 3 provide?

A

Extracts power from the exhaust gases and transmits it to an output shaft
Provides HP air for the IPS

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

What does module 4 provide?

A

Transmits the rotation of the power turbine through the engine to the MGB
Torque meter measures the torque transmitted through the power output shaft

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

What does Module 5 provide?

A

Provides speed reduction for the accessories mounted to it

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

What does Module 6 provide?

A

Removes unwanted damage from entering the engine

Anti-icing supplied from Module 3

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

What does FCOC stand for and what does it do?

A

Fuel Cooled Oil Cooler

Acts as a heat exchanger, cooling the oil by passing cold fuel over the top via pipes

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

Where is the FCOC located?

A

Mounted on the accessory gear box

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

What does the oil pump do and where is it located?

A

Pump maintains the pressure and supplies the oil to the lubrication system

Located on the accessory gearbox

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

Where is the alternator located?

A

On the accessory gearbox

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

Where is the air starter motor located and what does it do?

A

On the accessory gearbox

rotates the power plant and then disengages at self-sustaining speed

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

What types of fuel pumps are there and what do they do?

A

LP Fuel pump - boosts fuel delivery to the HP pump

HP Fuel pump - boosts delivery pressure before entering the power plant

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

What does the gas generator speed probe do?

A

Senses the gas generator speed (Ng)

20
Q

Where are the spark igniters located and what do they do?

A

Located at the rear of each power plant

Ignite fuel and air mixture during start sequence

21
Q

What are the major accessories of an engine?

A

Gas generator speed probe
Spark igniters
Fuel pumps
Air starter motor

22
Q

What are the major oil components in an engine?

A 
Oil Sump
Oil Filter
Oil Pump
Chip detector
Mag plug x3
Fuel Cooled Oil cooler
Pop out indicators
Sight Glass
Oil Jet
Oil Temperature probe
23
Q

What are the major fuel components on the engine?

A 
Fuel Filter
Fuel Pumps
Pop out indicators
Fuel Cooled Oil Cooler
Fuel Jets
24
Q

What are the major air components in an engine?

A 
Anti-Ice valves
VIGV Actuator
Air starter motor
PSV - pressurising start valve
Bleed valve
25
Q

What are the major electric components on an engine?

A

EECU
HEIU
Spark Igniter
LP/HP Switches

26
Q

What does HEIU stand for?

A

High Energy Ignition Unit

27
Q

What does EECU stand for?

A

Electronic Engine Control Unit

28
Q

How many engine thermocouples are there and where are they located?

A

7

Located at the rear of the engine

29
Q

Where are the air scoops located?

A

One on top and one on the side of each cowling

30
Q

What does an IPS Diffuser do?

A

Slows the dirty air exiting the IPS and directs it towards the exhaust

31
Q

What does exhaust design and engine bay scoops allow for?

A

Enough airflow to ensure a cooling effect around the engine and reduces a risk of fire

32
Q

What is the nozzle assembly that straightens the airflow and is fitted to the exhaust called?

A

Anti-Swirl vanes

33
Q

What are firewalls?

A

Fireproof casing around the engine

34
Q

What are firewalls made of?

A

Titanium

35
Q

What is special about the outboard top section of an engine bay firewall?

A

It is removable for access during engine installation/removal

36
Q

What are engine drains used for and where are they located?

A

Carries away leaked fluids

Located at the bottom of the engine

37
Q

What are engine wet drains?

A

Wet drains contain fluid as part of the normal operating cycle

38
Q

What must be done in relation to fuel drain tanks after each AF inspection?

A

Must be emptied

39
Q

Why are compressor washes necessary?

A

To ensure that the engines are maximum efficiency and FOD and dirt build up is removed from inside the engine

40
Q

When are compressor washes done?

A

When the aircraft endures environmental damage to the engine

When the engines show a significant difference in the efficiency of each engine

41
Q

How do you know if the engine is not as effective?

A

Information given through the PPI - Power Performance Index

Visual inspection of the engine

42
Q

What is HUMS?

A

Health and Usage Monitoring System

43
Q

How much shaft horse power does each power plant provide?

A

2000 - 3000 shaft horse power

44
Q

How much shaft horse power is the MGB limited to and how does it allow for this?

A

A combined input of 5200 shaft horse power

Controlled by FADEC system

45
Q

What is an RTM 322?

A

3 stage axial flow compressor
Centrifugal compressor
2 stage axial flow high power turbine
2 stage power turbine

Mechanics Mk4 (7 decks)

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