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Aircraft Fuel Systems-DME Oral
Airframe ASA 20 Questions
20
Aviation
Undergraduate 1
09/06/2015

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Cards

Term
What is the purpose of a cross feed system?
Definition
An interconnected fuel system so that fuel can be fed from various tanks to any engine.
Term
What is WET WING type construction?
Definition
An integral fuel cell.
Term
What is the purpose of a fuel temperature indicator in a turbine-powered aircraft?
Definition
It determines when there may be danger of ice crystals forming in the fuel.
Term
What supports the weight of fuel in a bladder type fuel cell?
Definition
The structure of the cavity that the cell fits into.
Term
What purpose other than reducing weight is accomplished with a fuel jettison system?
Definition
Lateral stability may be obtained with a heavy wing aircraft due to fuel out of balance.
Term
What are two types of fuel tanks?
Definition
Bladder and integral
Term
When would the fuel jettison system be required?
Definition
When the maximum takeoff weight exceeds the maximum landing weight
Term
What is the purpose of a fuel dump system?
Definition
To reduce the weight of the aircraft to a specified landing weight.
Term
Why should you wait a period of time after fueling before checking fuel sumps?
Definition
To allow time for water and sediment to settle to the drain
Term
Why is an electronic type fuel quantity gauge more accurate than others?
Definition
It measures weight instead of gallons.
Term
What is the purpose of fuel tank internal baffles?
Definition
It resists fuel surging caused by changes in the attitude of the aircraft.
Term
What are four types of fuel quantity gauges in use today?
Definition
Sight glass and mechanical
Electrical and electronic.
Term
What should be done with old gaskets and seals when replacing fuel system components?
Definition
They should be removed and replaced with new ones.
Term
What type of fuel system leak will not be visible by evidence of stains or wet spots?
Definition
An internal fuel leak such as a shutoff, selector and cross feed valve
Term
What method may be used to check a fuel tank for leaks after a patch or weld has been performed?
Definition
Air pressure up to 12 psi and liquid soap to detect any leaks.
Term
What is a pressure fueling system?
Definition
Underwing or single-point fueling system.
Term
What are advantages of single-point pressure fueling?
Definition
Reduces chances of contamination and fueling time
Eliminates aircraft skin damage

Term
What is an electrically-operated fuel tank shutoff valve in-transit light?
Definition
It indicates when the valve is in motion.
Term
What positions may be selected on a fuel tank selector valve?
Definition

On or off, cross feed and fuel tank positions



Term
What are drip gauges and sight gauges?
Definition
They are underwing bayonet-type fuel gauges
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