Fuel System Flashcards
Fuel Collector Cells
Each wing tank contains a collector cell that has a fuel capacity of approximately 1800 kg (3 970 lb).
The collector cell, that is at the lowest point of the wing tank, is permanently filled by gravity to keep the fuel pumps inlets immersed. This design provides low or negative “g” protection to feed the engine.
When does the APU fuel pump run?
The APU can be fed by the APU feed pump, that operates automatically, if required (starts to run when the APU is started, and stops when the APU is shutdown)
Fuel Feed on Take-off
The main wing tank pumps run continuously.
After takeoff, the center tank pumps start running a few minutes after the flight crew moves the FLAPS lever to 0
When will standby wing fuel pumps operate automatically?
In normal operation, when the center tank is empty, the standby pumps run continuously
How do you manual control the centre tank pumps?
CTR TK FEED pb - Manual control of the center tank pumps is activated.
If ECAM asks for it, how do you transfer fuel from Wing to Centre Tank?
By selecting L(R) TK XFR pb sw ON.
Fuel transfers by gravity from the wing tank to the center tank, via the refuel gallery.
Is fuel gravity fed through the wing to centre tank or pumped?
However, the flight crew can initiate a manual gravity transfer, via the FUEL overhead panel, as requested by ECAM procedures. 3 000 kg of the wing tank fuel cannot be transferred to the center tank.
