Airbus A350 - Engines

On ground, with the ENG MASTER lever set to OFF, the electrical network of the aircraft supplies the FADEC for _____.

1 minute.

5 minutes.

15 minutes.

Correct! Wrong!

The engine operates as follows: the LP compressor, referred to as the fan, compresses the air, then the air is divided into two flows. Most of the air flows out of the core engine, and provides most of the engine thrust and the remaining air enters the core engine. The IP and the HP compressors compress the air that enters the core engine. The fuel is added to and mixed with the compressed air of the core engine. The mixture is ignited in the combustion chamber. The gas that results from combustion drives the HP, the IP, and the LP turbines.

True.

False.

Correct! Wrong!

EGT LIMIT - The amber line indicates the maximum EGT (i.e. the EGT limit). The EGT limit appear during engine start and during takeoff.

True.

False.

Correct! Wrong!

The EGT limit does not appear during takeoff, or when the thrust reversers are selected, or if the alpha floor protection is activated.

A/THR INSTINCTIVE DISCONNECT PB - Pressing the A/THR instinctive disconnect pb only disconnects the A/THR.

True.

False.

Correct! Wrong!

Pressing the A/THR instinctive disconnect pb disconnects the A/THR (in flight) and the autobrake (on ground).

STARTER ASSISTED OR WINDMILLING START - In the case of a windmilling engine start, the engine uses the relative wind for its own rotation.The FADEC disconnects both associated engine-driven hydraulic pumps in order to increase the relight envelope.

True.

False.

Correct! Wrong!

MANUAL START - The FADEC does not abort an abnormal manual start, except if the starter is engaged above the maximum engagement speed.

True.

False.

Correct! Wrong!

The maximum EGT is _, during the engine start sequence on ground, or _, in all other cases.

650 deg.C and 900 deg.C

700 deg.C and 850 deg.C.

750 deg.C and 890 deg.C.

Correct! Wrong!

Each engine has one FADEC also called Engine Electronic Controller (EEC). The EEC controls the engine and computes the engine parameters for cockpit indications. Each EEC has _____ redundant channels.

Two. Channel A and channel B.

Two. FADEC 1 and FADEC 2.

Three. Channel A, channel B and channel C.

Correct! Wrong!

Depending on the aircraft altitude and the aircraft speed, if the FADEC detects overthrust, the FADEC:

Alerts the crew before shutting down the engine after 4 seconds.

Shuts down the affected engine, or reduces the thrust.

Shuts down the affected engine

Correct! Wrong!

The overthrust protection is active when the aircraft is below 16 600 f and the aircraft speed is below M 0.45.

Without A/THR, the engine thrust is always limited by the thrust lever position, except when the A.FLOOR protection is active.

False.

True.

Correct! Wrong!

The engine thrust is always limited by the thrust lever position, with or without A/THR, except when the A.FLOOR protection is active.

On ground during an automatic start sequence, if the FADEC detects that the EGT exceeds the temperature limit:

The FADEC automatically shuts down the engine. The FADEC automatically initiates a second automatic sequence after an automatic crank process.

The FADEC automatically shuts down the engine. The FADEC will automatically initiate a second automatic sequence after 60 seconds.

The FADEC automatically shuts down the engine. The FADEC automatically initiates a second and last automatic sequence after an automatic crank process.

Correct! Wrong!

WINDMILLING QUICK RELIGHT FUNCTION - The quick relight is available if N3 is _____.

Above 10 %.

Positive.

Above 10 % in flight.

Above 15% and below 50%.

Correct! Wrong!

The FADEC automatically selects continuous ignition with both igniters during a quick relight.

STARTER ASSISTED OR WINDMILLING START - The FADEC starts the engine via a starter assisted start (i.e. the FADEC automatically opens the engine start valve) if:

The airspeed is below 250 kt.

N3 is below 10 %, and the airspeed is below 250 kt.

N3 is below 6 %, or the airspeed is below 250 kt.

Correct! Wrong!

In case of inadvertent engine shutdown by cycling the ENG MASTER lever to OFF then ON, the FADEC will attempt automatically a relight regardless of the rotary selector position. The initiation of the quick relight function requires the ENG MASTER lever set to ON, then set to OFF, and back to ON within _____.

10 seconds.

20 seconds.

40 seconds.

Correct! Wrong!

The alternator of the FADEC supplies the FADEC when _____

N3 is above 8 %.

the ENG START selector is set to ON.

the ENG START selector is set to IGN START.

Correct! Wrong!

The engine has _____ compressor turbine assemblies:

Four.

Three.

Two.

Correct! Wrong!

1.The Low Pressure (LP) compressor turbine assembly. 2.The Intermediate Pressure (IP) compressor turbine assembly. 3.The High Pressure (HP) compressor turbine assembly.

The thrust limit value corresponds to the maximum available thrust of the engine with:

The current position of the thrust levers, the bleed configuration, the TAT (or OAT on ground).

The current position of the thrust levers, the bleed configuration, the TAT (or OAT on ground) and the data entered in the FMS PERF page.

The current position of the thrust levers, the bleed configuration and the data entered in the FMS PERF page.

Correct! Wrong!

The EEC protects the engine against fan instability. The fan instability depends on the aircraft speed and fan rotation speed (N1%).

False.

True.

Correct! Wrong!

On ground, when pressed, the electrical network of the aircraft supplies the FADEC for _____, when he ENG FIRE pb-sw is not pressed and the FADEC alternator does not supply the FADEC.

3 minutes.

15 minutes.

5 minutes.

Correct! Wrong!

In the case of overspeed of the LP compressor, or the IP compressor, the FADEC automatically shuts down the engine.

True.

False.

Correct! Wrong!

Associated with the following ECAM alerts: ENG 1(2) N1 OVER LIMIT, or ENG 1(2) N2 OVER LIMIT.

The engines provide bleed air to ensure:

The internal engine cooling, the engine section stator de-icing, the turbine case cooling to improve the turbine efficiency, and the engine stability via the control of the volume of airflow in the IP and HP compressors.

The internal engine cooling and the engine section stator de-icing.

The internal engine cooling, the engine section stator de-icing, and the turbine case cooling to improve the turbine efficiency

Correct! Wrong!

Airbus A350 – Engines

Quiz

Airbus A350 - Engines

On ground, with the ENG MASTER lever set to OFF, the electrical network of the aircraft supplies the FADEC for _____.

EGT LIMIT - The amber line indicates the maximum EGT (i.e. the EGT limit). The EGT limit appear during engine start and during takeoff.

A/THR INSTINCTIVE DISCONNECT PB - Pressing the A/THR instinctive disconnect pb only disconnects the A/THR.

STARTER ASSISTED OR WINDMILLING START - In the case of a windmilling engine start, the engine uses the relative wind for its own rotation.The FADEC disconnects both associated engine-driven hydraulic pumps in order to increase the relight envelope.

MANUAL START - The FADEC does not abort an abnormal manual start, except if the starter is engaged above the maximum engagement speed.

The maximum EGT is _____, during the engine start sequence on ground, or _____, in all other cases.

Each engine has one FADEC also called Engine Electronic Controller (EEC). The EEC controls the engine and computes the engine parameters for cockpit indications. Each EEC has _____ redundant channels.

Depending on the aircraft altitude and the aircraft speed, if the FADEC detects overthrust, the FADEC:

Without A/THR, the engine thrust is always limited by the thrust lever position, except when the A.FLOOR protection is active.

On ground during an automatic start sequence, if the FADEC detects that the EGT exceeds the temperature limit:

WINDMILLING QUICK RELIGHT FUNCTION - The quick relight is available if N3 is _____.

STARTER ASSISTED OR WINDMILLING START - The FADEC starts the engine via a starter assisted start (i.e. the FADEC automatically opens the engine start valve) if:

The alternator of the FADEC supplies the FADEC when _____

The engine has _____ compressor turbine assemblies:

The thrust limit value corresponds to the maximum available thrust of the engine with:

The EEC protects the engine against fan instability. The fan instability depends on the aircraft speed and fan rotation speed (N1%).

On ground, when pressed, the electrical network of the aircraft supplies the FADEC for _____, when he ENG FIRE pb-sw is not pressed and the FADEC alternator does not supply the FADEC.

In the case of overspeed of the LP compressor, or the IP compressor, the FADEC automatically shuts down the engine.

The engines provide bleed air to ensure:

The maximum EGT is _, during the engine start sequence on ground, or _, in all other cases.