Fuel Systems Flashcards

1
Q

Is there any reason why a fuel jettison system might be required on a small aircraft

A

Yes, if the maximum takeoff weight exceeds the maximum allowable landing weight

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2
Q

What are some other names for a single point fueling system

A

An underwing or pressure fueling system

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3
Q

The fuel selector valve from multi-engine aircraft must have at least three positions. What are they?

A

ON, OFF and Crossfeed

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4
Q

Why do some fuel tanks have internal baffles

A

To prevent fuel surging from changes in the aircraft altitude

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5
Q

What are the two types of fuel cells

A

Wet wing and bladder type

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6
Q

What does the term wet wing mean

A

Part of a wing structure that is sealed and used as a fuel tank

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7
Q

How is the weight of the fuel supported when bladder type fuel cells are used

A

Supported by the aircraft structure

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8
Q

Why do turbine engine aircraft have fuel temperature indicating systems

A

To determine if the fuel is cold enough to produce ice

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9
Q

Name four types of fuel quantity gauging systems currently in use

A

Sight gauges, mechanical, electrical, and electronic gauges

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10
Q

Why are electronic fuel quantity indicating systems more accurate than other types

A

They measure the mass of the fuel instead of the volume

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11
Q

What are drip gauges and sight gauges

A

An underwing,fuel gauge used to check the fuel level in the tank

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12
Q

What is the purpose of an in-transit light associated with electrically operated fuel tank shutoff valve

A

Tells that the valve is moving between one position and another

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13
Q

For what reason is a fuel jettison system usually divided into two separate independent systems one for each wing

A

Maintain lateral stability

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14
Q

What procedures should be followed regarding gasket and seals when replacing fuel system components

A

All old gaskets and seals should be replaced with new ones

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15
Q

How is a tank checked for leaks followed a patch or welding repair

A

tank is pressurized using air pressure and liquid soap

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16
Q

Name some advantages of a single-point fueling system

A

reduces fueling time, contamination, fire, and eliminates damage to the aircraft skin

17
Q

Why should you wait for a period of time after fueling an aircraft before checking the fuel sumps

A

allow water and contaminants to settle to the drain point

18
Q

Why do some aircraft have fuel jettison systems

A

To reduce the weight of the aircraft to the maximum allowable landing weight

19
Q

Is it possible for fuel systems to develop a leak that has no visible evidence such as a stain or spot and if so how

A

Yes a internal component such as a valve could could develop a leak

20
Q

What is the purpose of warning lights in connection with fuel systems

A

indicates when the fuel pressure is too low or when the fuel quantity in a tank is below a certain amount

21
Q

What is a Crossfeed system

A

Interconnected system designed to fed fuel from any tank to any engine

22
Q

Which type of fuel quantity gauge is considered to be more accurate than the other types

A

The electronic capacitance type because it measures in weight

23
Q

Where are fuel systems strainers located

A

One located in the outlet to the tank.
The main strainer is located in the fuel line between the outlet of the fuel tank and the inlet to the fuel metering device

24
Q

What must be done after a fuel system strainer has been cleaned or replaced

A

system must be tested for leaks by pressurizing the system

25
Q

What color is grade 100LL fuel

A

Blue