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Engine Systems > Fuel Systems > Flashcards

Fuel Systems Flashcards

1
Q

What is the composition of JP-8 fuel?

A

Gasoline and kerosine

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2
Q

At room temperature, how many times longer will it take water to settle out of JP-8 than out of gasoline?

A

Four

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3
Q

Jet aircraft operating at moderately high altitudes increase the fuel system’s susceptibility to an icing condition, further aggravated by the?

A

Higher velocity of jet fuels

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4
Q

During a visual inspection, how can you tell when a fuel filter is clogged?

A

A differential pressure indicator is actuated

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5
Q

During jet engine deceleration, a hydromechanical fuel control schedules fuel flow as a function of?

A

Burner pressure

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6
Q

What type of fuel control uses items such as thermocouples, relays, amplifiers, and solenoids to help control a jet engine?

A

Electrohydromechanical

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7
Q

Which term describes a jet engine metering device that is really two fuel controls in one component?

A

Unified

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8
Q

Calibration and/or adjustment screws that require setting during an engine trim procedure must be?

A

Safety sealed and/or lockwired

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9
Q

On an F100-PW-220 engine, what is the DEEC cooled by?

A

Fuel

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10
Q

Which F100-PW-220 engine fuel system component controls pressurization of the core engine fuel system?

A

P&D valve

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11
Q

Core engine fuel flow sequence on an F100-PW-220 engine starts at the main fuel pump and then goes up through the?

A

MFC, fuel/oil cooler, P&D, and fuel nozzles

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12
Q

On the T56 engine, how many and what types of fuel pumps are contained in the fuel pump and filter pump assembly?

A

2 gear and 1 boost

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13
Q

On a T56 engine, what controls the rotary movement of the fuel control metering valve?

A

Compressor inlet pressure

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14
Q

Which T56 engine component receives 120 percent of the engine fuel requirement?

A

TD valve

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15
Q

In what position must the TD valve switches be placed on order to make the T56 engine fuel trimming system inoperative?

A

NULL

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16
Q

In addition to the visual inspection, what other type of inspection does the T56 engine fuel nozzle require?

A

Spray pattern

17
Q

On the T56 engine, what compares the desired throttle from the coordinator with the TIT signal from the thermocouples?

A

TD amplifier

18
Q

Which T56 engine component sends the fuel to the fuel manifold?

A

TD valve

19
Q

On the T56 engine,the fuel manifold pressure switch opens to deenergize the fuel enrichment relay when fuel pressure, in psi, in the manifold reaches?

A

50 psi

20
Q

When the null orifice on the T56 engine TD valve is set at zero, how much fuel will the valve bypass?

A

20 percent

21
Q

The temperature datum system static check must be made whenever which component has been replaced?

A

Power section

Engine Systems (6 decks)

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