Systems Guide

Aerosoft
Airbus A320/A321
SYSTEMS
Systems guide
Vol
4
04-03-33
28 October 2014
The windshields consist of multi layered glass and are
electrically heated to prevent icing. Two of the windows
have sliding mechanisms. To open the windows left
mouse click on the handle. The window will be opened
by a rattle mechanism. To close the window, right mouse
click on the handle. Make sure the red ring underneath
the release button is shown to indicate the window is
locked. The status of the windows is also shown in the
ECAM DOORS page.
ELECTRICAL
GENERAL
In normal operation the generation and distribution of electrical power is fully automated and does not need any
interaction. Even when there are failures the systems will almost always be able to correct or activate alternate
systems when needed. As with all overhead panels a dark panel with all lights off indicates systems without fault
and in automatic mode.
AC GENERATION
AC power is distributed via the two AS buses. Each engine generator supplies one of the two buses but a tie
connection allows one of the generators to provide both buses. The APU generator can be used as the sole source
for all systems, excluding the galleys. Note that at high altitude the APU generator load capacity is decreased.
When available, Ground Power is able to provide all buses with electricity. The two batteries are connected to
the buses via a static converter. An automated bus tie system interconnects all systems.
AC BUSES
There are 5 buses for AC power:
1. AC1 Bus
2. AC2 Bus
3. AC ESS Bus
4. AC ESS SHED Bus
5. AC Ground/Flight (the latter is ignored)
DC GENERATION
The DC system powers the DC components, and is needed to start the APU when no EXT PWR is available. The DC
electrical system is the first backup for the AC system and will power essential components when all AC
generators are offline. In normal operation three transformer rectifiers (TRs) convert AC to DC and AC1 is the first
source for DC power.
Two NICAD batteries connect to their own hot battery bus that is always active. The batteries are charged using
the DC BAT bus and disconnected from all buses when they are not needed and fully charged. The batteries use
proprietary code so they will not lose power as fast as standard FSX batteries. Depending on your use you should
be able to run the systems on battery for up to half an hour. Of course it is advised to either connect external
power of power up the APU to avoid your aircraft going cold and dead unexpected.