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M15 Ryan > M15.14 > Flashcards

M15.14 Flashcards

1
Q

3 groups of engine indications?

A

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

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2
Q

Can engine trend monitoring be seen in the cockpit?

A

No

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3
Q

What do performance indications show?

A

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

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4
Q

What do system indications show?

A

Monitors engine systems and detect malfunctions

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5
Q

What 2 indications are used to give thrust?

A

Rotational speed of fan
Engine pressure ratio

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6
Q

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

A

Oil quantity
Oil pressure
Oil temp

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7
Q

What are the warnings found on ECAM/EICAS?

A

Engine exceeding limits
Low oil pressure
Clogged filter
Unlocked thrust reverser

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8
Q

ACMS?

A

A/C condition monitoring system

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9
Q

What are the 3 analyses done by the ACMS?

A

Thermo dynamics
Mechanical dynamic
Oil consumption

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10
Q

Where is engine trend monitoring done?

A

In a workshop

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11
Q

How many rotor speed indications are there in a engine?

A

One for each rotor system

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12
Q

Engine speed indications are always shown as what?

A

Percentage of 100%

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13
Q

What are the 3 parts of the rotor speed indication?

A

Sensor
Data transmission
Indication

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14
Q

EPR?

A

Engine Pressure Ratio

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15
Q

EPR corresponds to what?

A

Engine thrust

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16
Q

TIT?

A

Turbine Inlet Temp

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17
Q

ITT?

A

Inlet Turbine Temp

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18
Q

The temp read by the EGT must not exceed what?

A

900c

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19
Q

3 different types of EGT indications?

A

Clock type
Moving verticals bar
Electromechanical indicator

20
Q

How does the hydraulic indication system work?

A

On the output shaft of an epicyclidal reduction gearbox

21
Q

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

A

Allows them to transmit in a increasing axial thrust

22
Q

What does the electronic torque meter use?

A

2 concentric shafts between the engine and gearbox

23
Q

What is the engine pressure ratio indicator used for?

A

To set the thrust for takeoff

24
Q

What is vibration a sign of?

A

Rotor damage or rotor imbalances

25
Q

Vibration is shown in the cockpit by what?

A

Units from 0 to 6

26
Q

EVMU?

A

Engine Vibration Monitoring Unit

27
Q

How do vibration sensors work?

A

By delivering an electrical signal to a computer

28
Q

What type of sensor is a vibration sensor?

A

Accelerometer

29
Q

How many vibration sensors are there on each engine?

A

2

30
Q

Where are the vibration sensors located on the engine?

A

In the compressor area
In the turbine area

31
Q

Fuel flow to the engines is shown in what?

A

Kg per hour

32
Q

Fuel used since engine was started is shown in what?

A

Kg per hour

33
Q

What does fuel flow indication allow you to do?

A

To monitor the performance and economic operation of the engines

34
Q

When does the fuel used indication automatically reset?

A

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

35
Q

What calculates fuel?

A

FADEC

36
Q

What does the fuel flow transmitter measure?

A

Mass of fuel flow between fuel control unit and fuel nozzles

37
Q

How does the fuel flow transmitter work?

A

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

38
Q

Do modern fuel flow transmitters need a electric motor?

A

No

39
Q

What are the 2 type of oil quantity transmitters?

A

Capacitance type
Reed switch type

40
Q

The oil pressure transmitter is connected to what?

A

Oil supply line and oil tank vent line

41
Q

How does the oil pressure transmitter work?

A

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

42
Q

What are the 2 types of oil pressure transmitters?

A

Bourdon tube type
Strain gauge type

43
Q

What does the low oil pressure switch do?

A

Initiates a low oil pressure warning

44
Q

The oil pressure warning is always accompanied with what?

A

An acoustic warning

45
Q

Where is the oil temp sensor located?

A

In the scavenge system

46
Q

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

A

SOAP

M15 Ryan (17 decks)

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