M15.14

Question 1

3 groups of engine indications?

Answer 1

Performance indications (primary indications)
System indications (secondary indications)
Engine trend monitoring

Question 2

Can engine trend monitoring be seen in the cockpit?

Answer 2

No

Question 3

What do performance indications show?

Answer 3

The performance and limits of the engine and set thrust for different phases of flight

Question 4

What do system indications show?

Answer 4

Monitors engine systems and detect malfunctions

Question 5

What 2 indications are used to give thrust?

Answer 5

Rotational speed of fan
Engine pressure ratio

Question 6

What are the 3 things monitored by the system indication system?

Answer 6

Oil quantity
Oil pressure
Oil temp

Question 7

What are the warnings found on ECAM/EICAS?

Answer 7

Engine exceeding limits
Low oil pressure
Clogged filter
Unlocked thrust reverser

Question 8

ACMS?

Answer 8

A/C condition monitoring system

Question 9

What are the 3 analyses done by the ACMS?

Answer 9

Thermo dynamics
Mechanical dynamic
Oil consumption

Question 10

Where is engine trend monitoring done?

Answer 10

In a workshop

Question 11

How many rotor speed indications are there in a engine?

Answer 11

One for each rotor system

Question 12

Engine speed indications are always shown as what?

Answer 12

Percentage of 100%

Question 13

What are the 3 parts of the rotor speed indication?

Answer 13

Sensor
Data transmission
Indication

Question 14

EPR?

Answer 14

Engine Pressure Ratio

Question 15

EPR corresponds to what?

Answer 15

Engine thrust

Question 16

TIT?

Answer 16

Turbine Inlet Temp

Question 17

ITT?

Answer 17

Inlet Turbine Temp

Question 18

The temp read by the EGT must not exceed what?

Answer 18

900c

Question 19

3 different types of EGT indications?

Answer 19

Clock type
Moving verticals bar
Electromechanical indicator

Question 20

How does the hydraulic indication system work?

Answer 20

On the output shaft of an epicyclidal reduction gearbox

Question 21

What’s the purpose of helical cut teeth in a planet gear?

Answer 21

Allows them to transmit in a increasing axial thrust

Question 22

What does the electronic torque meter use?

Answer 22

2 concentric shafts between the engine and gearbox

Question 23

What is the engine pressure ratio indicator used for?

Answer 23

To set the thrust for takeoff

Question 24

What is vibration a sign of?

Answer 24

Rotor damage or rotor imbalances

Question 25

Vibration is shown in the cockpit by what?

Answer 25

Units from 0 to 6

Question 26

EVMU?

Answer 26

Engine Vibration Monitoring Unit

Question 27

How do vibration sensors work?

Answer 27

By delivering an electrical signal to a computer

Question 28

What type of sensor is a vibration sensor?

Answer 28

Accelerometer

Question 29

How many vibration sensors are there on each engine?

Answer 29

2

Question 30

Where are the vibration sensors located on the engine?

Answer 30

In the compressor area In the turbine area

Question 31

Fuel flow to the engines is shown in what?

Answer 31

Kg per hour

Question 32

Fuel used since engine was started is shown in what?

Answer 32

Kg per hour

Question 33

What does fuel flow indication allow you to do?

Answer 33

To monitor the performance and economic operation of the engines

Question 34

When does the fuel used indication automatically reset?

Answer 34

When master switch is switched to on and a/c on ground

Question 35

What calculates fuel?

Answer 35

FADEC

Question 36

What does the fuel flow transmitter measure?

Answer 36

Mass of fuel flow between fuel control unit and fuel nozzles

Question 37

How does the fuel flow transmitter work?

Answer 37

By the fuel mass turning a turbine against a spring and the deflection angle is measured

Question 38

Do modern fuel flow transmitters need a electric motor?

Answer 38

No

Question 39

What are the 2 type of oil quantity transmitters?

Answer 39

Capacitance type Reed switch type

Question 40

The oil pressure transmitter is connected to what?

Answer 40

Oil supply line and oil tank vent line

Question 41

How does the oil pressure transmitter work?

Answer 41

By sense the pressure difference between the total oil pressure in supply line and vent pressure in the tank

Question 42

What are the 2 types of oil pressure transmitters?

Answer 42

Bourdon tube type Strain gauge type

Question 43

What does the low oil pressure switch do?

Answer 43

Initiates a low oil pressure warning

Question 44

The oil pressure warning is always accompanied with what?

Answer 44

An acoustic warning

Question 45

Where is the oil temp sensor located?

Answer 45

In the scavenge system

Question 46

What is used to find internal wear of lubricated engine components?

Answer 46

SOAP