Air Systems 2 Flashcards
What are the generator voltages and currents?
- 28 V DC
- 325 A
What are the battery voltages and charge?
- 24 V DC
- 27 Ah
At what voltage will the GPU button look like this?
24.5 – 29 V DC
The Shed Bus includes the ………. and the ………. and will only run with ………. generators or ………. .
The Shed Bus includes the Inverter and the Vapour Cycle System (VCS) and will only run with both generators or the GPU.
At what voltage will the BATT indication turn yellow when connected to the GPU?
≤ 26.9 V
What is the voltage output and overload capability of the GPU?
- 28.5 V DC
- Overload capability of 2000 A for 2 secs
What will be displayed on the GPU button when the GPU is physically connected (i.e. plugged in)?
A white ‘AVAIL’.
What will be displayed on the GPU button when the GPU is electrically connected (i.e. button pushed in)?
A green ‘IN USE’.
At what voltage will the GPU automatically disconnect from the aircraft?
< 24.5 V DC
In an emergency, what light sources will be available?
- Dome light;
- PFD 1 & MFD;
- Courtesy light;
- 2x torches.
How long is the timer on the courtesy and baggage compartment lights?
5 mins
What does PRSOV stand for?
Pressure Regulating Shut-Off Valve
What is the maximum altitude with two engine bleed air supplies?
41000 ft
What is the maximum altitude with one engine bleed air supply?
31000 ft
What is the maximum Differential Over Pressure?
8.6 PSID
What is the maximum Differential Normal Pressure?
8.3 PSID
What does PSID mean?
Pounds per Square Inch Difference
What valve regulates the cabin pressure differential?
Out Flow Valve (OFV)
In an emergency involving an overpressure, what regulates the pressure differential?
Positive Pressure Relief Valve (PPRV)
In an emergency involving an underpressure, what regulates the pressure differential?
Negative Pressure Relief Valve (NPRV)
What is the maximum Differential Negative Pressure?
-0.4 PSID
What does the DUMP command do?
It fully opens the Out Flow Valve (OFV).
With the cabin pressurisation set to AUTO, what cabin altitude will not be exceeded during a DUMP command?
12000 ft
With the cabin pressurisation set to MAN, what cabin altitude will not be exceeded during a DUMP command?
14500 ft