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Airbus A330 > Pneumatic > Flashcards

Flashcards in Pneumatic Deck (17)
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1
Q

The 3 sources or high pressure air for pneumatic system are

A

Engine bleed, APU bleed, and 2 external HP air ground connections

2
Q

Pneumatic system operation is controlled and monitored by

A

2 bleed Monitoring Computers

3
Q

High pressure air for pneumatic system is supplied from engine bleed air systems,

A

APU load compressor, two HP ground connections

4
Q

HP pneumatic air is used for Engine starting,

A

Hydraulic reservoir pressurization, air conditioning, wing anti icing water pressurization and pack bay ventilation turbofan actuation

5
Q

If engine bleed valve closes,

A

The HP valve closes automatically

6
Q

The temperature is regulated by

A

Precooler to 200ºC

7
Q

Precooler outlet temperature green ECAM BLEED page displays changes to amber if the outlet temperature is

A

290ºC more than 5 sec; 270ºC more than 15 sec; 257ºC more than 55 seconds

8
Q

APU speed more than 95% and APU BLEED pb sw ON:

A

APU bleed valve opens; crossbleed valve opens; ON in APU BLEED pb sw illuminates

9
Q

APU normal speed, APU BLEED pb ON

A

APU bleed valve opens, crossbleed valve opens, engine bleed valves close

10
Q

BMCs receive bleed pressure, temperature, valve position information are connected to

A

other systems requiring bleed information

11
Q

Pneumatic system operation is controlled and monitored by

A

2 Bleed Monitoring Computers

12
Q

Two BMC supply information to ECAM and

A

Central Maintenance Computer

13
Q

APU and Engines on, APU BLEED pb sw is ON,

A

ENG bleed valves close, crossbleed valve opens, APU bleed valve opens

14
Q

Crossbleed valve with two electric motors

A

One for automatic, the other for manual mode

15
Q

In case of a left wing leak signal Eng 1 bleed valve and HP valve automatically close

A

If crossbleed valve open it automatically closes (except during engine start or manually selected open); APU bleed valve is open, it automatically closes.

16
Q

APU leak signal, the APU bleel valve automatically closes, FAULT light illuminates in APU bleed pb on the AIR panel;

A

Crossbleed valve automatically closes (except when manually selected open)

17
Q

Crossbleed engine start to provide air for starting ENG 2, the crossbleed valve is

A

Manually selected OPEN