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Pneumatics And Airconditioning Flashcards

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1
Q

What part of the air cycle machine where air is expanded and cooled

A

Turbine

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2
Q

Sources of pneumatics in flight

A

Engine, APU

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3
Q

Used to regulate engine bleed air pressure

A

Bleed valve

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4
Q

Used to distribute pneumatics

A

Pneumatic ducts

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5
Q

Where are the pressurized zones

A

Cockpit, cabin, cargo, avionics compartment

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6
Q

Where are the unpressurized area

A

Landing gear bays, radome, tail cone

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7
Q

Different functions of air conditioning system

A

Cools, pressurizes, heats, ventilates

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8
Q

What is the reasonable cabin altitude

A

8,000 ft

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9
Q

What regulates the supply of pressure that correspond to the flight altitude

A

Outflow valve

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10
Q

Computer that regulates the amount of trim air that is mixed with the called air that flows out through the pack

A

Zone controller

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11
Q

Computer that regulates the temperature of the cold air that gives the pack

A

Pack controller

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12
Q

Cooling device that is considered to be very effective

A

Heat exchanger

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13
Q

Cooling device that is used when engine bleed air is not available

A

Vapor cycle machine

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14
Q

Cooling device that is used in most jet aircraft

A

Air cycle machine

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15
Q

Recirculation system consist of

A

Filter, check valve, fan

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16
Q

What are the different components of the air cycle machine

A

Turbine, compressor, fan

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17
Q

Used to minimize the amount of ozone in the cabin that can harm person

A

Ozone converter

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18
Q

Control valve that determines the amount of air going to the cabin

A

Pack flow control valve

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19
Q

Part of the air cycle machine that causes the air to expand causing the pressure and temperature to decrease

A

Turbine

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20
Q

What are the negative effects of water in the cabin?

A

Corrosion and discomfort

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21
Q

Where can we see the pack controllers?

A

Located in the avionics compartment

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22
Q

Distribute cold air from the pack to different zones in the cabin

A

Mixing unit

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23
Q

What are the 2 different ways to distribute cold air to the cockpit?

A

Directly from the pack or by aerodynamic way

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24
Q

Supplies ambient air to pack when all packs fail

A

Emergency ram air inlet

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25
This allows individual control of all zones
Trim air valve
26
System that remove hot, humid, and stale air
Ventilation system / extraction fan
27
Different cargo compartment types for air conditioning
Ventilated, nonventilated, heated, and unheated
28
How to ventilate cargo compartments
Blower fan and extraction fan
29
How to heat cargo compartment
Bleed air or electrical heaters
30
Ways to cool avionics compartment
a.) Heat exchanger (using aircraft skin) b.) Extractor valve (nilalabas yung init) c.) Discharged cabin air (pinapasok ung cold air from cabin)
31
Cabin rate that we shouldn't exceed
+500 ft and -300 ft
32
This means that pressure in the cabin is lower than the ambient pressure
Negative differential pressure
33
What cabin altitude will oxygen masks automatically release from passenger cabin seats
14,000 ft
34
What cabin altitude will relief valve open?
15,000 ft
35
For safety reasons, how many persons do we need inside the cockpit during cabin pressurization test
2
36
Installed in the cargo compartment to avoid excessive pressure difference between different pressurized areas
Blowout panels
37
Cabin pressure regulation failure this valve protects the aircraft structures against structural damage in excessive differential pressure
Safety valve
38
Principles of cooling or heat transfer
Heat is a form of energy where it cannot be destroyed nor made. It can only be transformed. Heat can only flow from an object to a cooler object
39
What is the relationship between pressure and altitude
Pressure decreases as altitude increases
40
What is the relationship between humidity and temperature
Humidity increases as temperature increases
41
Parts/components of recirculation system
Check valve, filter, and fan
42
It isolates the bleed air from the Left to Right- Wing pneumatic ducts?
Cross bleed valve (Airbus) or Isolation Valve (Boeing)
43
Which computer controls the Isolation Valve?
Pneumatic Controller (PC)
44
What is the role of Bleed Valves?
For Pressure Regulation function, shutoff function, check valve function, overtemperature control function
45
When is the LP Valve used?
When the Pneumatic system is in the normal condition wherein the LP stage is sufficient source of bleed air
46
Which computer controls the HP Valve?
Pneumatic Controller (PC)
47
If there a leakage on our Pneumatics what are the indications?
FAULT is illuminated on the overhead panel and Amber color + closed valves indication on the ECAM
48
Does the APU Bleed Valve regulate the PSI?
No, it only has a shutoff function and it is controlled by Pneumatic controller and push button S/W on the cockpit
49
Computer for ducting and monitored by?
Pneumatic Controller and monitored by Leak Detection system which is Loop Detector
50
Where are the sources of our Pneumatic supply?
HP Ground Supply (Ground Cart), APU, Engine (HP or LP Compressor)
51
What are the two valves used on some aircraft for Pressure regulating system?
Pressure Regulator Valve, Bleed Valve
52
Which computer controls the Fan Air Valve?
Pneumatic Controller
53
What is the purpose of the Fan Air Valve?
It is used to allow more or less fan air from the engine fan duct to pass the precooler
54
What is the purpose of manual override control in the HP Valve?
Locks the HP valve in a closed position if there is a fault in the operation of the valve
55
What are the primary components of Air Cycle Machine
Compressor, Turbine, and Fan
56
What is the composition of Heat Exchanger?
Primary and Secondary Heat Exchanger
57
What cools the Primary and Secondary Heat Exchanger?
Ram Air
58
What the normal Cabin Altitude?
8.000 feet
59
What is the function of the Turbine in the ACM?
It expands the air, causing the pressure and temperature to decrease
60
What is the function of the Ozone Converter?
To minimize the amount of ozone in the Cabin by using a catalyst which converts the ozone to harmless oxygen
61
How do we control the air temperature in our Primary and Secondary Heat Exchanger?
By adjusting the opening RAM air inlet door and RAM air exit door
62
What are the components of Recirculation System?
Check Valve, Recirculation Fan, Air Filter
63
What do you call to the Passengers individual Air supply system below the hat racks?
Gasper System
64
How do we detect ice formation in our Air Conditioning system?
Out Pressure transmitter send differential pressure information between the water separator inlet and outlet to the PACK controller
65
What component do we use in an event of all PACKS system inoperative?
Emergency RAM Air Inlet door flap
66
What are the three ways to shut down the Trim Air Valve?
When the PACK is not working. Trim Air Valve is blocked in open position, or Air Pressure Regulator is Closed
67
What is function of Isolation Valves?
They must close in the event of cargo fire to stop the airflow
68
What are the Cargo Heating system in the Aircraft?
Heating system using either by Hot Bleed Air or Electrical Heaters
69
What computer is used to control the ventilation of our avionics compartment?
Avionics Equipment Ventilation Computer (AEVC)
70
The Source of air for cooling of E/E Compartment during ground?
Ambient Air/RAM Air
71
The source of air for cooling of E/E Compartment during flight?
Cabin Air
72
The Source of air for cooling of E/E Compartment during smoke event?
Air Conditioning
73
What happens to our air during Inboard Mode?
Air flows through E/E Compartment then goes to the underfloor area (FWD Cargo Compartment)
74
What happens to our air during Outboard mode?
Air goes out of the aircraft through Overboard Valve
75
What kind of Heat Exchanger is used on our system?
Air to Air Heat Exchanger
76
Where is our Air Conditioning System is located?
Center Wing Box
77
When does the Extraction Fans open?
When the Aircraft is energized
78
When does the Extraction Fans closes?
When there's enough differential pressure is present to transport the air
79
Protection Function during 10,000 ft cabin altitude?
Flight Crew gets a warning to put on the oxygen masks
80
Protection Function during 14,000 ft cabin altitude?
Oxygen masks automatically released from the passenger cabin ceiling
81
Protection Function during 15,000 ft cabin altitude?
Outflow Valves must close automatically
82
What safety procedure we do before turning ON the Air Conditioning system on ground?
We need at least 1 open door or window

M11 (14 decks)

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