Block 2: Powerplant-B. Engines Flashcards

1
Q

What type of engine is used in the F/A-18E/F?

A

The F414-GE-400 engine.

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2
Q

What type of engine is used in the F/A-18A-D?

A

Either F404-GE-400 or F404-GE-402 engine.

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3
Q

Describe the F/A-18 engine.

A

The engine is a low bypass, axial flow, dual-spool turbofan engine of modular construction with afterburner.

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4
Q

Explain the ignition system.

A

Ignition system is an automatic, intermittent duty, AC powered, capacitor discharge system.

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5
Q

Explain the ignition system circuitry.

A

Ignition system circuitry is self-contained on the engine, requiring no aircraft electrical power for operation.

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6
Q

How long does the ignition system stay energized?

A

Until N2 rpm is 54% or greater or the throttle is retarded below idle.

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7
Q

What is the ignition system made up of?

A

An alternator, FADEC or ECA, engine fuel control, ignition exciter, main igniter, AB igniter, AB flame sensor, two fan speed transmitters and thermocouple harnesses.

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8
Q

Explain the lubrication system.

A

It’s accomplished through a self-contained recirculation, dry sump requiring no external connections or inputs. It also provides lubrication/cooling to the required bearings and gears.

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9
Q

VEN

A

Variable Exhaust Nozzle

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10
Q

Explain the VEN system.

A

It’s a cam and link-positioned hinged-flap, convergent-divergent nozzle, mounted to the aft end of the afterburner case.

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11
Q

Explain how the VEN system is operated.

A

It’s hydraulically (fuel) operated, electrically controlled series of actuators, synchronizing shafts, links, flaps, seals, providing a controlled throat area (A8) for the exhaust gasses from the turbine

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12
Q

How long does the ignition system stay energized?

A

Until N2 rpm is 54% or greater or the throttle is retarded below idle.

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13
Q

What is the ignition system made up of?

A

An alternator, FADEC or ECA, engine fuel control, ignition exciter, main igniter, AB igniter, AB flame sensor, two fan speed transmitters and thermocouple harnesses.

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14
Q

Explain the lubrication system.

A

It’s accomplished through a self-contained recirculation, dry sump requiring no external connections or inputs. It also provides lubrication/cooling to the required bearings and gears.

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15
Q

VEN

A

Variable Exhaust Nozzle

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16
Q

Explain the VEN system.

A

It’s a cam and link-positioned hinged-flap, convergent-divergent nozzle, mounted to the aft end of the afterburner case.

17
Q

Explain how the VEN system is operated.

A

It’s hydraulically (fuel) operated, electrically controlled series of actuators, synchronizing shafts, links, flaps, seals, providing a controlled throat area (A8) for the exhaust gasses from the turbine