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Powerplant > Turbine Systems > Flashcards

Turbine Systems Flashcards

1
Q

When adjusting your FCU, what will be your final direction to turn?

A

Increase direction

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2
Q

An aircraft should be facing into the wind when trimming an engine. However, if the velocity of the wind blowing into the intake is excessive, it is likely to cause a…

A

False high compression and turbine discharge pressure

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3
Q

The type of oil pumps most commonly used on turbine engines are classified as what?

A

Positive displacement

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4
Q

After making a welded repair to a pressurized-type turbine engine oil tank, the tank should be pressure checked to…

A

5psi above normal pressure

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5
Q

Anti-ice air commonly comes from the turbine section? (True or False)

A

False

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6
Q

What does ACC stand for?

A

Active Clearance Control

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7
Q

Two most common types of exhaust noise suppression are…

A

Corrugated perimeter
And
Tube type

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8
Q

Operating thrust reversers at what speed can cause FOD?

A

Slow speed

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9
Q

What happens to Static Pressure of supersonic exhaust gases through a divergent duct?

A

Pressure decreases and velocity increases

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10
Q

What are the most common types of Jet Fuel?

A

Jet A & Jet A1

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11
Q

Which filter has the highest degree of filtering: Scavenge, Low pressure, High pressure…

A

High pressure

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12
Q

What causes the fuel divider valve to open?

A

Fuel pressure

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13
Q

In a supervisory electronic engine control (EEC) system, when there’s any fault in the EEC what will it do?

A

It reverts to hydromechanical

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14
Q

What are the two principle sections of the Fuel Control Unit (FCU)?

A

Computing and Metering

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15
Q

What will the oil do when the engine is cold in reference to the fuel oil cooler?

A

It will bypass the cooler

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16
Q

What is the primary purpose of the fuel/oil cooler?

A

To cool the oil

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17
Q

On a test stand, what type of inlet is used on a turbine engine?

A

Bellmouth

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18
Q

In axial flow compressor, bleed air is used to cool the inlet guide vanes… (True or False)

A

False

19
Q

What are the insulating blankets around the hot section made out of?

A

Aluminum, Fiberglass, or Stainless steel

20
Q

Is rearward thrust equal to forward thrust?

A

No (35-50%)

21
Q

What is the purpose of lining the inlet of turbo fan with honeycomb?

A

Noise suppression

22
Q

Are the generators on aircraft and APU interchangeable?

A

Yes

23
Q

What in fuel allows microbial growth?

A

Water

24
Q

What is the purpose of the fuel flow divider in a turbine engine duplex fuel nozzle?

A

Primary and secondary fuel flow

25
Q

What do boost pumps in a fuel system do?

A

Primes engine driven fuel pump

26
Q

What is not a variable of the FCU?

A

Humidity

27
Q

When the throttle lever increases thrust, what does the fuel flow do?

A

Increases

28
Q

Why is it important to service oil within 30 minutes of shut down?

A

To prevent over filling

29
Q

What is the purpose of the dwell chamber?

A

To separate out the oil

30
Q

What do the blow-in doors do?

A

Allow more air in the inlet

31
Q

Where is the oil cooler located in reference to a “hot tank”?

A

Pressure line

32
Q

Two most common sources of power for thrust reversers are?

A

Pneumatic and Hydraulic

33
Q

Which has more heat energy, Kerosene or AVGAS?

A

Kerosene

34
Q

What are the perimeters during engine trim settings?

A

Idle and max power

35
Q

When an emergency alternative fuel is used, what should be adjusted?

A

Specific gravity

36
Q

What does the fuel/oil cooler do in reference to fuel?

A

Warms fuel

37
Q

The purpose of an engine/inlet anti-ice system is primary to…

A

Prevent the formation of ice

38
Q

Aircraft uses ram air pressure in flight to cool engines internals around cowling, how is this done on the ground?

A

Low pressure air around the exhaust (Cowl flaps)

39
Q

What are the most common types of thrust reversers?

A

Mechanical and Aerodynamic

40
Q

What does the fuel tank boost pump do in reference to engine driven pump?

A

Primes engine driven pump

41
Q

What is the unit that lies at the heart of the EEC?

A

Hydromechanical fuel controller

42
Q

Oil pumped to main bearing is used for…

A

Cooling and lubrication

43
Q

Fix orifice nozzles used in turbine engine lube systems do what?

A

Send right amount of oil to each bearing

44
Q

What does the pneumatic system run off of?

A

Bleed air

Powerplant (18 decks)

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