Aircraft fuel systems Flashcards
What is the purpose of a fuel jettisoning (dump) system?
To reduce the weight of the aircraft to a specified landing weight.
What is the purpose of a fuel tank internal baffles?
To resist fuel surging caused by changes in the attitude of the aircraft.
Why should you wait a period of time after fueling before checking fuel sumps?
To allow time for water and sediment to settle to the drain point.
What are two types of fuel tanks cells?
A bladder-type and integral fuel tank.
What supports the weight of fuel in a bladder-type fuel cell?
The structure of the cavity that the cell fits into.
What is wet wing-type construction?
integral fuel tanks
What indications could be used to determine when there may be danger of ice crystals forming in the fuel
of a turbine-powered aircraft?
Fuel temperature or a differential pressure type indicators.
What are four types of fuel quantity gauges in use today?
Sight glass, Mechanical, electrical and electronic.
What is an electrical operated fuel tank shutoff valve in-transit light?
A light that indicates when the valve is in motion.
What should be done with old gaskets and seals when replacing fuel system, components?
Removed and replaced by new ones.
What method may be used to check a fuel tank for leaks after a weld has been performed?
The tank is pressurized with ½ to 3 psi air pressure and a soapy solution is added to detect any leaks.
When would a fuel jettison system be required for small aircraft?
It is required when the maximum takeoff weight exceeds the maximum landing weight.
What are some other names for a single-point fueling system?
An underwing or pressure fueling system.
Why do multi-engine airplanes have fuel crossfeed systems?
To allow any engine to be feed by any tank.
The fuel selector valve for a multi-engine aircraft must have at least three positions. What are they?
ON, OFF and CrossFeed.
