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EMB-135BJ > Pneumatics & Air Conditioning > Flashcards

Flashcards in Pneumatics & Air Conditioning Deck (25)
0

Air for the pneumatic system is received from the ___ th (low pressure) and ___ th (high pressure) stage bleed air, the _______ and ________ air sources.

9

14

APU

ground

1

The pneumatic system distributes air for the following systems:
______________ ____________
______________ ____________

Engine Starting

Air Conditioning

Pressurization

Ice Protection

2

High pressure 14th stage bleed air is normally used for ______ engine thrust and ___________ system operation.

low

thermal anti-ice

3

A _________ limits the bleed air temperature to a maximum 299ºC by using engine _______ air.

pre-cooler

Fan

4

The crossbleed valve opens in the auto position in the event of _______ or _______ start operations

ice conditions

engine

5

In normal operations, the _____ pack valve automatically closes in icing conditions below _________ feet.

#1

24,600

6

The environmental control units (ECUs) consist of 2 ____________ (ACMs) which air condition the aircraft.

Air Cycle Machines

7

The APU can supply bleed air for pressurization and temperature control on the _________ or in ________.

Ground

air

8

APU bleed air is connected to the ________ side of the pneumatic system

left

9

The APU bleed valve is electrically ________ if the left engine bleed is open or the right engine bleed valve is open with the CBV selected open.

Closed

10

An ________ inscription illuminates above the white stripe in the APU bleed button to indicated that the APU bleed valve is ______.

Open

Open

11

The ground air connection for engine starting is located on the _______ aft side of the aircraft

Right

12

The temperature indication for bleed air down stream of the pre-cooler can be found on the _______ page of the _______.

ECS

MFD

13

The _______ are installed forward of the aircraft wing root inside the wing-to-fuselage fairing.

ECUs

14

The temperature in the cockpit and cabin may be controlled __________, or ___________ through control knobs located on the _________ panel.

Automatically

Manually

overhead

15

When the cabin knob is in automatic (knob pushed in) and in the ______ detent, cabin temperature can be directly controlled by either the temperature controller in the Galley or by the controller at the VIP seats

Attd

16

In the automatic mode the temperature is controlled between _____ ºC and _____ºC

18

29

17

There are ____ electrical recirculation fans that are powered through the ______ buses. The recirculation fan on/off button is located on the __________ panel.

2

shed

overhead

18

Recirculation air is pulled from beneath the cabin _________ and mixed with air from the ______. If the _______ valve is deselected, the associated recirculation fan is also ___________.

Floor

ACM

Pack

Inoperative

19

The Gasper fan provides air through the individual outlets and also provides ventilation for:
_____________
_____________
_____________

Aft Avionics Bay

Relay Boxes

O2 Compartment

20

The Gasper fan can be turned off when the aircraft is _______ but not when the aircraft is ________________.

Airborne

On the ground

21

An automatic system cools the nose ________ __________ where most of the electronic equipment is installed.

avionics compartment

22

The "BLD 1(2) OVTEMP" caution message means the associated __________ downstream temperature is above 305ºC.

pre-cooler

23

The "PACK 1(2) OVLD" message means the associated ECU _________ temperature is above 470ºF (243ºC), or ECU ______ pressure is above 55 psig. Which cause the associated pack to ___________

compressor

inlet

Shutdown

24

The "Pack 1(2) OVHT" message means the associated ECU outlet temperature is above _______ which causes the associated pack to _____________

93ºC

shutdown