Brainscape's Knowledge GenomeTM

Browse over 1 million classes created by top students, professors, publishers, and experts.


See full index

CRJ-700 > Air/Pneumatic System > Flashcards

Air/Pneumatic System Flashcards

1
Q

What sources can supply the pneumatic system with pressurized air?

A

The 6th or 10th stage compressor sections off the engines, APU or a external ground air source

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
2
Q

What is the function of the Air Conditioning System Controller? (ACSC)

A

Bleed source selection, Valve operation, air distribution

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
3
Q

Where is the Engine start external ground air connector?

A

After left side of the fuselage

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
4
Q

Where is the external ground air pressure (high pressure) monitored from the cockpit?

A

ECS Synoptic Page

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
5
Q

What is the function of the Engine Bleed Valve (PRSOV)?

A

Limits and regulates the discharge pressure from the engine to 45psi ±3 psi

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
6
Q

How can the pilot manually close the bleed valves?

A

By using the manual portion of the Bleed Air Control Panel

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
7
Q

What is the function of the high pressure valve (HPV)?

A

To supply the 10th stage pressure when the system demands are greater than that of the 6th stage bleed air

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
8
Q

What is the function of the APU LCV?

A

It opens to provide bleed air for ECS and engine starts and modulates to control the amount of bleed air taken from the APU

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
9
Q

What unit controls the APU LCV?

A

The APU ECU

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
10
Q

What side of the bleed manifold does the APU supply bleed air?

A

The left side

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
11
Q

What is the function of the Isolation Valve?

A

To connect the left and right sides of the bleed manifold?

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
12
Q

When does the Isolation Valve automatically open?

A

During engine starts, and when the APU LCV is opened

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
13
Q

When does the Isolation Valve automatically close?

A

During transfer of the bleeds from the APU to the engines

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
14
Q

How can the pilot manually operate the Isolation Valve?

A

Using the switches on the Bleed Air Control Panel

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
15
Q

What bleed source will supply the bleed air manifold on the ground with the APU and engines running and the bleed valve selector in the auto mode?

A

APU

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
16
Q

When does the ACSC switch from the APU to the engines as a bleed source after departure?

A

When the thrust levers are retarded from the takeoff detent, flaps up and gear up (20 sec)

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
17
Q

When does the ACSC switch from the engines to the APU as a bleed source during approach?

A

When the flaps are greater than 20° or the gear is down (20 sec)

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
18
Q

What will occur if the APU is supplying bleed air to the manifold and either cowl or the wing anti-ice is selected on with both engines operating?

A

The ACSC will close the APU LCV and transfer the bleeds to the engines

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
19
Q

What will occur if the APU is supplying bleed air and the wing or cowl anti-ice is selected on with the engines shutdown

A

The ACSC will close the APU LCV, the manifold will depressurize, and the BLEED MISCONFIG caution message will appear

20
Q

What happens when the START switchlight is pressed

A

Isolation Valve opens, both AC Packs close, the Start valve opens, and the Air Turbine Starter engages

21
Q

What is the function of the Bleed Air Leak Detection System?

A

Monitors the bleed air and anti-ice ducts for leaks

22
Q

What is the function of the Anti-Ice Leak Detection Controller?

A

Dual channel to monitor the anti-ice and bleed air ducts and the integrity of both loops of the detections system

23
Q

What happens when the pilot selects close on the Bleed Air Control Panel?

A

It closes all the valves except for the external air source

24
Q

What happens when the pilot selects “Manual” on the Bleed Air Control Panel?

A

It allows the pilot to control the valve position with the exception of the ACSC interlocks and system logic, and engine starting sequence

25
Q

What is the function of the Environmental Control System (ECS)?

A

Provide conditioned air to the cockpit and cabin

26
Q

Where are the air conditioning packs?

A

Aft Equipment Bay

27
Q

What part of the aircraft does Pack 2 supply?

A

Cabin and Aft Cargo bay

28
Q

What part of the aircraft does Pack 1 supply?

A

Cockpit

29
Q

How is the Temperature Control Valve regulated from the cockpit

A

By twisting the Cockpit or Cabin rotary selector on the Air Conditioning Panel

30
Q

What is the function of the Ram Air Intake Scoop and where is its location?

A

It provides air to cross the heat exchangers, or provide ventilation to the cockpit and cabin in the event of both packs failing, and is located at the base of the vertical fin

31
Q

Where is the Ram Air exhausted after passing through the heat exchangers?

A

Out through exhaust vent on the left and right sides of the aft fuselage

32
Q

If there is no ram air available, how are the heat exchangers cooled?

A

There is a fan mechanically connected to the Air Cycle Machine that draws air through the duct for cooling

33
Q

What is the function of the low pressure Environmental Control System air-ground connector?

A

To provide preconditioned air into the mixing manifold for distribution

34
Q

What is the function and location of the Recirculation Fans?

A

They are located in the mixing manifold recirculation inlet ducts and to draw air from the passenger compartment to the mixing manifold

35
Q

How are the CRT’s cooled and ventilated?

A

Air from the cockpit air conditioning duct and the 2 display cooling fans

36
Q

What is the function of the GND ALT position of the DSPLY FAN selector located on the center pedestal?

A

If allows the fan normally used in flight to cool the CRT’s on the ground in the event the ground fan fails

37
Q

What is the function of the STDBY position of the DSPLY FAN selector located on the center pedestal?

A

Power is removed from both fans

38
Q

What is provided to cool the electronics in the avionics bay?

A

2 Avionics fans

39
Q

What is the function of the Ground Valve?

A

It opens on the ground to allow the air that cools the CRT’s and the avionics bay to be dumped overboard, and also ensures that the aircraft is fully depressurized on the ground

40
Q

When does the ground valve open and close?

A

It closes when the passenger and galley doors are closed, and opens with WOW at touchdown

41
Q

How long is departure field elevation maintained after departure?

A

For 10 minutes above altitudes 6,000 above the takeoff field elevation

42
Q

What is the function of the Pneumatic Safety Valves?

A

To provide overpressure and negative pressure relief

43
Q

How can the pilots manually switch between CPC 1 and 2?

A

Press PRESS CONTROL switchlight twice

44
Q

What is the Cabin Pressure Controller (CPC)

A

2 CPC’s control all the automatic pressurization process

45
Q

What is the function and location of the outflow valve?

A

Located at the aft pressure bulkhead and controls the discharge of the air from the aircraft

46
Q

How fast does the ground valve open if the EMER DEPRESS is pushed while on the ground?

A

2 seconds

47
Q

What is the max altitude the cabin will go to if the EMER DEPRESS is pushed in flight?

A

14,500ft ±500 ft

CRJ-700 (21 decks)

Brainscape helps you reach your goals faster, through stronger study habits.
© 2024 Bold Learning Solutions. Terms and Conditions