ACT 1 ACT 2 ACT 3 ACT 4 ACT 5 ACT 6 Total with 6 ACTs
Volume Liters 3104 2180 2180 3036 3104 3104 40568
US Gal 820 576 576 802 820 820 10718
Weight Kg 2437 1711 1711 2383 2437 2437 31846
Lb 5372 3773 3773 5254 5372 5372 70207
Note: Two fuel operating sequences are available on A319 CJ. ACTs are fueled in the following order :
.
Seq A: 1, 2, 3, 4, 5 and 6
.
Seq B: 1, 2, 4, 6, 3 and 5 and defueled in the reverse order. Please refer to the Weight and Balance Manual for applicable information.
SYSTEMS
B. FUEL SYSTEMS
2.1.3. A321
Note : One or two optional additional center tanks can be fitted (on A321-200 only)
Fuel Capacity (Usable fuel) . density: 0.785kg/L
Wing Tanks Center Tank Total without ACT ACT Total with 1 ACT Total with 2 ACTs
Volume Liters 7745 8210 23700 2992 26692 29684
US Gal 2046 2169 6261 790 7052 7842
Weight Kg 6080 6445 18605 2349 20954 23302
Lb 13404 14208 41015 5178 46193 51371
B. FUEL SYSTEMS
2.2. Fuel System
The standard body family has the simplest fuel systems, as it is neither equipped with a CG control system nor a trim tank. Indeed, the benefits of a CG control system on the much shorter missions of the A320 family aircraft would be negligible compared with the cost related to the installation of a CG control system (maintenance costs and extra weight on board). So, the fuel system only deals with fuel quantities and tank transfer issues. As explained above, some differences can be observed depending on the aircraft type and on the modifications fitted on the aircraft (e.g. ACTs)
2.2.1. Engine feed and fuel transfer
On A318, A319 and A320 aircraft, there are six main pumps: two pumps in the center tank (except A320-100 which has no center tank) and two pumps in each inner tank. Each engine is fed with one pump in the center tank and with the two pumps in its own side inner tank. When inner tanks reach low level, valves between outer and inner open and an automatic gravity transfer occurs.
On A321, each engine is supplied from two pumps in its own side wing tank. Fuel transfers from center tank to wing tanks are managed through a transfer valve.
When aircraft are equipped with ACTs (Additional Center Tanks), fuel transfer is made by pressurization. ACTs are emptied one by one into the center tank.
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本文链接地址：Getting to Grips with Aircraft Weight and Balance(21)
