section 7- fuel system Flashcards
what does the fuel system consist of?
2 independent systems which can be connected by crossfeed
what does each independent fuel system feed during normal operation?
the corresponding engine
what 4 components make up each fuel tank system?
- fuel tanks
- fuel booster pumps
- jet pumps
- fire cock
how many fuel tanks in each fuel tank system?
3 (outboard, inboard and feeder)
what is the total usable fuel?
2386 litres
what 5 components do the outboard and inboard tanks contain?
- jet pumps
- fuel quantity trnsmitters
- drain valves
- vent lines
- magna-stick level indicator
what 5 components do the feeder tanks contain?
- booster pumps
- fuel quantity transmitter
- drain valves
- fuel low level transmitter
- crossfeed shutoff valve (LH system only)
where is the defueling quick disconnect?
in the engine nacelles
what do the flapper valves allow?
fuel gravity flow int the feeder tank in case of boost pump failure or during refueling
what happens to accumulated air in the fuel tanks?
it is collected in the vent tank and vented overboard
where are the fuel drain valves located?
on the lower side of each wing
what is provided in the feeder tank for engine fuel supply and jet pump operation?
2 electrically driven boost pumps
how is fuel transferred into the feeder tank from the inboard and outboard tank?
2 boost pump operated jet pumps located in each tank
if the boost pumps become inoperative during flight, will all the fuel be able to be transferred into the feeder tank by gravity?
no
what energises the fuel boost pumps?
2 pump switches per engine on the LH overhead switch panel
what powers the fuel boost pumps?
28v DC