Prelim Flashcards
(241 cards)
1
Q
Examples of artificial environment system
A
- Air Conditioning System
- Pneumatic System
2
Q
Purpose of the artificial environment system
A
For the comfort of the passengers or to sustain their lives
3
Q
Purpose of Cabin Environment System (3)
A
- Passenger Comfort
- Maintenance Comfort
- Prolong the Aircraft Service
4
Q
The pressure inside and outside the aircraft must be ___
A
Equal
5
Q
Each type of aircraft will have specific requirements according to the altitudes and speeds at which the aircraft is flown.
A
Flight Physiology
6
Q
Study of how the body and mind work in a flying environment.
A
Flight Physiology
7
Q
Study of how our organs function. And what keeps them from functioning in an abnormal environment.
A
Flight Physiology
8
Q
An integral part of human factors and safe flight.
A
Flight Physiology
9
Q
It has a direct effect on human performance.
A
Flight Physiology
10
Q
Turbine Engine powered aircraft are efficient at high altitudes, but the human body is unable to exist in this cold and oxygen-deficient air.
A
Atmosphere
11
Q
Physical mixture of gases
A
Atmosphere
12
Q
Percentage of oxygen
A
21%
13
Q
Percentage of nitrogen
A
78%
14
Q
Percentage of all other gases
A
1%
15
Q
5 Layers of the Atmosphere
A
- Troposphere
- Stratosphere
- Mesosphere
- Thermosphere
- Exosphere
16
Q
The Layer of Atmosphere:
Layer closest to Earth’s surface.
A
Troposphere
17
Q
The Layer of Atmosphere:
Layer closest to Earth’s surface.
A
Troposphere
18
Q
The Layer of Atmosphere:
Cessna or smaller aircraft can be seen
A
Troposphere
19
Q
The Layer of Atmosphere:
This is where the jet aircraft and weather balloons fly.
A
Stratosphere
20
Q
The Layer of Atmosphere:
Larger aircraft and commercial aircraft.
A
Stratosphere
21
Q
The Layer of Atmosphere:
Hard to study layer.
A
Mesosphere
22
Q
The Layer of Atmosphere:
Scientists do know that meteors burn up in this layer.
A
Mesosphere
23
Q
The Layer of Atmosphere:
Considered part of the Earth’s atmosphere.
A
Thermosphere
24
Q
The Layer of Atmosphere:
Air density is low that most of this layer is what is normally thought of as outer space.
A
Thermosphere
25
The Layer of Atmosphere:
| Aurora, spacecraft
Thermosphere
26
The Layer of Atmosphere:
| Highest layer and extremely thin
Exosphere
27
The Layer of Atmosphere:
| Where the atmosphere merges into outer space.
Exosphere
28
The Layer of Atmosphere:
| Satellites
Exosphere
29
Must be continually supplied with food and oxygen.
Human Respiration and Circulation
30
Must have their waste carried away and removed from the body.
Human Respiration and Circulation
31
Human Respiration and Circulation:
| The lungs expand and the atmospheric pressure forces air into fill them.
Understand
32
Human Respiration and Circulation:
Two importance considerations in providing sufficient oxygen:
o Enough oxygen
o Sufficient pressure
Prioritize
33
Human Respiration and Circulation:
| Abnormal breathing if oxygen is not properly supplied.
Hypoxia (Flight)
34
To provide pure oxygen to supplement the ever-decreasing amount of oxygen available in the atmosphere.
Oxygen System
35
To pressurize the aircraft to create an atmosphere that is like experienced naturally at lower altitudes.
Oxygen System
36
Designed to store or to generate a supply of pure oxygen and to regulate, dilute as required, and then distribute that oxygen to crew or passengers.
Oxygen System
37
Types of Oxygen System:
| At normal room temperature and pressure.
Compressed Gas
38
Types of Oxygen System:
| Contained under pressure, usually in the cylinder.
Compressed Gas
39
Types of Oxygen System:
| A device used to provide oxygen therapy to people that require greater oxygen concentrations.
Portable Oxygen Concentrator
40
Types of Oxygen System:
| Acts as a nebulizer
Portable Oxygen Concentrator
41
Types of Oxygen System:
| Oxygen can be made liquid by lowering the temperature to below -183 Celsius or by placing gaseous oxygen under pressure.
Liquid Oxygen System
42
One of the artificial environments
Aircraft Pressurization System
43
Achieved by directing air into the cabin from either the compressor section of a jet engine, from a turbo-supercharger, or from an auxiliary compressor.
Aircraft Pressurization System
44
Air is ___, and the aerodynamic drag is ___ in high altitudes.
- thin
| - low
45
Deals with compressed air or pressurized gas as a source of power.
Pneumatic
46
The gas that is used in a pneumatic system.
Air
47
Sources of pneumatic power, pressurized air:
- Engine
- APU
- GPU
48
Sources of pneumatic power, pressurized air:
| Provides enough air for combustion purposes and for the pneumatic system.
Engine
49
Sources of pneumatic power, pressurized air:
| Airflow is continuously entering (relative wind)
Engine
50
Sources of pneumatic power, pressurized air:
| Used most of the time to pressurized
Engine
51
Sources of pneumatic power, pressurized air:
| Used when the engine starts because the engine does not have a continuous airflow yet.
APU
52
Sources of pneumatic power, pressurized air:
| For emergency situations with limited power.
APU
53
Sources of pneumatic power, pressurized air:
| If ___ is not enough ram air turbine can be a back-up
APU
54
Sources of pneumatic power, pressurized air:
| If APU is not enough ____ can be a back-up
Ram Air Turbine
55
Sources of pneumatic power, pressurized air:
| Delivered via connectors, the High-Pressure Ground Connectors.
GPU
56
Sources of pneumatic power, pressurized air:
| Ground power unit
GPU
57
Sources of pneumatic power, pressurized air:
| External power
GPU
58
Sources of pneumatic power, pressurized air:
| Used in ground only
GPU
59
Sources of pneumatic power, pressurized air:
| Used for maintenance
GPU
60
On aircraft pneumatic energy is used for: (5)
* Engine starting
* Cabin pressurization and air conditions
* Wing anti-icing
* Water reservoir pressurization
* Hydraulic reservoir pressurization
61
Reciprocating Engine Aircraft:
| Pressurization air for smaller piston-engine aircraft is provided by ___ from the engine turbochargers.
Bleed air
62
Turbine Engine Aircraft:
| A good source of air to pressurize the cabin.
Compressor
63
Turbine Engine Aircraft:
| The air from the compressor in a turbine engine provides ___ aside from pressurization.
Heat
64
Turbine Engine Aircraft:
| ___ may be used directly, or it may be used to drive a turbo compressor.
Compressor bleed air
65
Electronic regulators and electrically actuated outflow valves perform the same function as pneumatic systems, only the ____ is different.
Power source
66
Electrical signals are sent to the cabin pressure controller from the cockpit control panel to set the:
o Mode of operation,
o Desired cabin altitude
o Either standard or local barometric pressure.
Electronic Regulators
67
Electronic Regulators:
| Electrical signals are sent to the cabin pressure controller from the cockpit control panel to set the:
o Mode of operation,
o Desired cabin altitude
o Either standard or local barometric pressure.
68
To keep the aircraft cabin pressure at a safe level, any incoming air is held within the cabin.
Outflow Valve
69
The engines produce ___ to fly the aircraft.
Thrust
70
If ___ is increased pressure increases as well.
Thrust
71
If thrust is increased ___ increases as well.
Pressure
72
2 Valves of Pneumatic System Schematic
* Pressure Regulator/Bleed Valve
| * Built-In Pre-cooler (Fan-Air Valve)
73
Distribution Components
* Wing duct (left and right)
* Pylon duct (left and right)
* APU duct
* Crossover duct (cross bleed manifold)
* Pneumatic ducts
74
Distribution Components:
| Crossover duct is also known as
Cross bleed manifold
75
Distribution Components:
| The pneumatic ducts are monitored by a?
Leak Detection System
76
Pressurization and Zones:
| Areas that are pressurized:
* Cockpit
* Passenger compartment
* Avionics computer and cargo
77
Pressurization and Zones:
| Areas that are not pressurized
* Radome
* Landing gear bays
* Tail cone
78
A flight hazard that destroys the smooth airflow across the aircraft’s lifting and control surfaces.
Ice
79
A flight hazard that decreases their ability to produce lift, increases the weight of the aircraft, and increases induced drag.
Ice
80
A hazard that affects the pilot's ability to see clearly.
Rain
81
Deals with the operating and maintaining of aircraft ice prevention and removal system.
Ice and Rain Protection
82
Deals with procedures and equipment for ground ice and snow removal.
Ice and Rain Protection
83
Ice Formation and Classification:
| This is reduced when the aircraft operates in the rain during take-off or approach.
Reduce Visibility
84
Ice Formation and Classification:
| To solve reduced visibility, there are two systems in the aircraft.
o A windshield wiper for each pilot
| o A rain repellant system
85
Ice Formation and Classification:
| The aerodynamic quality of the aircraft is reduced.
Ice Buildup
86
Ice Formation and Classification:
| The aircraft weight increases
Ice Buildup
87
Ice Formation and Classification:
| Effects of Ice Buildup
o The aerodynamic quality of the aircraft is reduced
| o Its weight increases
88
Ice Formation and Classification:
| The engine can also get problems and the ice can block the ____ for the air data system.
Probes
89
Ice Formation and Classification:
| ___ on the windshields will decrease the visibility more than the rain.
Ice
90
Ice Formation and Classification:
| Types of ice differ in their way of building up and structure.
Classification of Ice
91
Ice Formation and Classification:
| Clouds have no ice but have ___ water droplets.
Supercooled
92
Ice Formation and Classification:
| When clouds' water droplets hit the aircraft, they change from ___ to ___.
- Liquid water
| - Solid ice
93
```
Ice Formation and Classification:
It affects the following aircraft parts:
o Wings airplanes
o Rotors of helicopters
o Propellers
o Stabilizer of airplanes
o Stabilizers of helicopters
```
Clear Ice or Glaze
94
Ice Formation and Classification:
| This is produced when temperature of the droplets is between 0 and -10 degrees Celsius.
Clear Ice or Glaze
95
Ice Formation and Classification:
| Where does the ice buildup (clear ice) begins?
Leading edge of the surface.
96
Ice Formation and Classification:
| This is produced when the temperature of the droplets is below -10 degrees Celsius.
Rime Ice
97
Ice Formation and Classification:
| These are very cold droplets that freeze immediately and build up on the leading edge only.
Rime Ice
98
Ice Formation and Classification:
| When you fly at a higher speed in this condition, the rime ice layer forms a typical ____ shape.
Double horn
99
Ice Formation and Classification:
| Builds on the surface of aircraft that are packed outside in the cold nights.
Frost
100
Ice Formation and Classification:
| Frosts can have negative effects: (3)
o Decrease of lift
o Increase of weight
o Increase of drag
101
These are pieces of dirt that may damage the fan blades or inlet blades.
Engine Ice Formation
102
A disturbed airflow reduces the performance of the engine and can lead to a ___.
Compressor stall
103
Ice Formation and Classification (6)
- Reduce Visibility
- Ice Buildup
- Classification of Ice
- Clear Ice or Glaze
- Rime Ice
- Frost
104
Types of Oxygen (3)
- Compressed Gas
- Portable Oxygen Concentrator
- Liquid Oxygen System
105
Types of Ice Detection (3)
- Thermal Anti-Ice System
- Electronic Ice Detector
- Optical Ice Detector
106
Types of Ice Detection:
| Can only do their task when they are switched on before any ice build-ups during flights.
Thermal Anti-Ice System
107
Types of Ice Detection:
It is not permitted to keep this system on all the time. Because taking hot air from the engines reduces their performance and economy.
Thermal Anti-Ice System
108
Types of Ice Detection:
| It works by manually pressing the corresponding buttons on the control panel.
Thermal Anti-Ice System
109
Types of Ice Detection:
Thermal Anti-Ice System -
Source of thermal air
Pneumatic and electrical air
110
Types of Ice Detection:
| Installed near the air data probes and therefore not visible to the pilot.
Electronic Ice Detector
111
Types of Ice Detection:
When this component detects ice, it generates a message in the cockpit and can automatically activate the ice protection system.
Electronic Ice Detector
112
Types of Ice Detection:
| Visual indicator
Optical ice Detector
113
Types of Ice Detection:
When the pilots see ice on this detector, then there is probably ice on the other parts of the aircraft. Therefore, pilots must switch on the thermal anti-ice system.
Optical ice Detector
114
Types of Ice Detection:
| Front windscreens where it is in sight of both pilots.
Optical ice Detector
115
Removal of ice buildup.
De-Icing
116
Prevention of ice buildup.
Anti-Icing
117
Ice protection that is mainly performed on the ground when the aircraft is made ready for its journey.
De-Icing
118
Types of De-Icing (4)
- Pneumatic De-Icing
- Electrical De-Icing
- Chemical De-Icing
- Hot Air De-Icing
119
Types of De-Icing:
| Used in propeller-driven airplanes and some helicopters in flight.
Pneumatic De-Icing
120
Types of De-Icing:
Pneumatic de-icing system usually uses this at the leading edges of the wing and the stabilizers, which normally have the shape of the leading-edge structure.
Rubber boots
121
Types of De-Icing:
| Used in some airplanes and some large helicopters in flight.
Electrical De-Icing
122
Types of De-Icing:
| Each heated stall has its own temperature control circuit.
Electrical De-Icing
123
```
Types of De-Icing:
Its components are:
o Heating mats in the slats
o Control unit
o Temperature sensors
```
Electrical De-Icing
124
Types of De-Icing:
| Components of Electrical De-Icing (3)
o Heating mats in the slats
o Control unit
o Temperature sensors
125
Types of De-Icing:
| Applied on airplanes to remove frost from the airfoil and the fuselage on the ground.
Chemical De-Icing
126
Types of De-Icing:
| Commonly performed in both commercial and general aviation.
Chemical De-Icing
127
Types of De-Icing:
| Chemical De-Icing fluids (2)
De-icing or anti-icing fluids
128
Types of De-Icing:
| Mixture of glycol and water
Chemical De-Icing
129
Types of De-Icing:
Chemical De-Icing -
Prevents a new ice build-up for a limited time, depending on the weather conditions.
Anti-icing fluids
130
Types of De-Icing:
| Applied on airplanes to remove frost from specific devices on the ground.
Hot Air De-Icing
131
Types of De-Icing:
| Chemical de-icing can damage some engine types. For this reason, this system is used instead.
Hot Air De-Icing
132
Types of De-Icing:
(Hot Air De-Icing)
Releases hot air
Hot air blower
133
Types of De-Icing:
| Other critical devices that may be damaged in de -icing process (3)
o APU inlet and exhaust
o Carbon Brakes
o Radome
134
Ice protection that is mainly performed during flight.
Anti-Icing
135
Types of Anti-Icing (5)
- Pneumatic/Hot Air Anti-Icing
- Hot Oil Anti-Icing
- Chemical Anti-Icing
- Electrical Anti-Icing
- Telescoping Duct
136
Types of Anti-Icing:
| Applied in flight
Pneumatic/Hot Air Anti-Icing
137
Types of Anti-Icing:
(Pneumatic/Hot Air Anti-Icing)
Uses hot air which is already regulated by the bleed valve of the pneumatic system.
Wing Anti-Ice
138
Types of Anti-Icing:
(Pneumatic/Hot Air Anti-Icing)
Uses bleed air from the corresponding engine.
Engine Anti-Ice
139
Types of Anti-Icing:
(Pneumatic/Hot Air Anti-Icing)
Must make sure that ice pieces from the fuselage do not hit the engine.
Centre Engines
140
Types of Anti-Icing:
| Used in some small airplanes after and in helicopters
Hot Oil Anti-Icing
141
Types of Anti-Icing:
| Used for engine anti-icing
Hot Oil Anti-Icing
142
Types of Anti-Icing:
| This system leads the hot oil from the engine through hollow struts in the engine air intake.
Hot Oil Anti-Icing
143
Types of Anti-Icing:
| The struts heat up to prevent icing of the air intake area.
Hot Oil Anti-Icing
144
Types of Anti-Icing:
| Applied on airplanes after de-icing on ground and on some propeller driven airplanes in flight.
Chemical Anti-Icing
145
Types of Anti-Icing:
| Used in some propeller-driven aircraft
Chemical Anti-Icing
146
Types of Anti-Icing:
| Used in all aircraft in flight
Electrical Anti-Icing
147
Types of Anti-Icing:
| A probe heat system prevents blocking of data probes.
Electrical Anti-Icing
148
Types of Anti-Icing:
(Electrical Anti-Icing)
It prevents blocking of data probes.
Probe heat system
149
Types of Anti-Icing:
| A window heat system prevents ice on the windshield that would reduce visibility.
Electrical Anti-Icing
150
Types of Anti-Icing:
| A line and drain mast heat system prevents frozen water lines.
Electrical Anti-Icing
151
Types of Anti-Icing:
(Electrical Anti-Icing)
It prevents ice on the windshield that would reduce visibility.
Window heat system
152
Types of Anti-Icing:
(Electrical Anti-Icing)
It prevents frozen water lines.
Line and drain mast heat system
153
Types of Anti-Icing:
| Necessary to supply the wing anti-ice duct.
Telescoping Duct
154
Types of Anti-Icing:
| Is short when the slats are retracted
Telescoping Duct
155
Types of Anti-Icing:
| Is long when slats are extended.
Telescoping Duct
156
Types of Anti-Icing:
| Used for jet aircraft/engines
Telescoping Duct
157
Types of Anti-Icing:
| Telescoping Duct is ___ when the slats are retracted.
short
158
Types of Anti-Icing:
| Telescoping Duct is ___ when slats are extended.
long
159
Types of Anti-Icing:
| Telescoping Duct is short when the slats are ___.
retracted
160
Types of Anti-Icing:
| Telescoping Duct is long when slats are ___.
extended
161
Results of Ice Buildup (6)
* Poor aerodynamic
* More aircraft weight
* Engine problems
* Blocked air data probes
* Reduced visibility
* Frozen water lines
162
Rain Removal Systems (2)
- Windshield wiper
| - Rain Repellant
163
Rain Removal Systems:
| Removes water mechanically.
Windshield Wiper
164
Rain Removal Systems:
| Rain repellant fluid or special windshield coating.
Rain Repellant
165
Rain Removal Systems:
| Mixture of glycol and water
Rain Repellant
166
Rain Removal Systems:
| Rain Repellant is a mixture of
Glycol and water
167
Aircraft Oxygen Systems (3)
- Crew oxygen system
- Passenger oxygen system
- Portable oxygen system
168
A system that is used when there is depressurization or accidents.
Aircraft Oxygen System
169
As the altitude increases the air pressure and density of air ____.
Decreases
170
The volume you breathe stays the same but at about ___ ft. the amount of usable oxygen has halved.
18,000
171
At this altitude, you would have trouble staying alive.
18,000 ft.
172
At ___ ft. the amount of usable oxygen you inhale is about a quarter of that at sea level.
33,000
173
Loss of cabin pressure.
Rapid decompression
174
When the AC is cruising, the cabin pressure is maintained at about ____ ft.
8,000
175
At what feet humans compensate for the lack of oxygen by breathing faster.
10,000 ft.
176
At what feet the first effects of altitude will show, such as exhaustion and sleepiness.
14,000 ft.
177
At what feet is the zone of incomplete compensation.
15,000-20,000 ft.
178
At 15,000-20,000 ft. what are the zone of incomplete compensation
```
o Loss of concentration
o Partial memory loss
o Feel a sense of well being
o Muscle would ache
o Loss of judgment
```
179
Types of Oxygen (3)
- Aviators Breathing Oxygen
- Medical Oxygen
- Technical Oxygen
180
At low temperatures, any moisture in our oxygen would ___.
freeze
181
Characteristics of Oxygen:
| Used on aircraft because it is very dry
Aviators Breathing Oxygen
182
Characteristics of Oxygen:
| Never used on aircraft as it contains water droplets and would therefore freeze.
Medical Oxygen
183
Characteristics of Oxygen:
| Used in the medical field.
Medical Oxygen
184
Characteristics of Oxygen:
| Should never be used for breathing as it is contaminated.
Technical Oxygen
185
Characteristics of Oxygen:
| Used in welding.
Technical Oxygen
186
Characteristics of Oxygen:
| For industrial work.
Technical Oxygen
187
Characteristics of Oxygen (3)
- Invisible/dry
- Odorless
- Non-flammable
188
It supplies the cockpit crew with oxygen it is always available.
Crew Oxygen System
189
Types of Aircraft Oxygen System:
It consists of 1 or more high-pressure oxygen bottles (4 maximum). These are stored in the lower deck, either in the avionics compartment or in the cargo compartment.
Crew Oxygen System
190
Where does the crew oxygen system locate?
Avionics compartment or cargo compartment (typically on the left hand).
191
Types of Aircraft Oxygen System:
| Attached to each bottle is a pressure regulator.
Crew Oxygen System
192
Oxygen is stored in cylinders known as ___.
Oxygen bottles
193
Oxygen bottles are made up of? (2)
- Steel alloy
| - Composite material: Kevlar
194
What color are oxygen bottles?
Dark Green
195
Oxygen bottles store ___ psi.
1850-1900
196
Each oxygen bottle has a slow-opening shut-off valve that opens and closes the bottle. The valve should either be ___.
fully opened or fully closed
197
Oxygen Bottles:
| A disk which is a safety device is also known as
Frangible Disk
198
Oxygen Bottles:
| If the frangible disk is damaged, what color will be shown in the discharge indicator?
Yellow
199
Oxygen Bottles:
| If the frangible disk is normal, what color will be shown in the discharge indicator?
Green
200
Oxygen Bottles:
| What does the direct reading pressure gauge indicate?
The bottle pressure
201
Oxygen Bottles:
| What indicates the bottle pressure?
The direct reading pressure gauge
202
Oxygen Bottles:
| What controls the psi that will flow to the oxygen mask of the pilots.
Pressure regulator transmitter assembly
203
Oxygen Bottles:
| What is the pressure range of the oxygen received by pilots?
65-94 psi.
204
Oxygen Bottles:
| What shows the psi of the oxygen bottle?
Door/Oxy ECAM page
205
Oxygen Bottles:
| What is the use of the door/oxy ECAM page?
It shows the psi of the oxygen bottle.
206
* The oxygen is transported to the cockpit via lines and manifold.
* A pressure regulator is located near the oxygen bottles to reduce the length of high-pressure lines.
Distribution
207
Distribution:
| The oxygen is transported to the cockpit via ____.
lines and manifold
208
Distribution:
| A pressure regulator is located near the oxygen bottles to reduce the ____.
length of high-pressure lines
209
Distribution:
| Where is the pressure regulator located?
Near the oxygen bottles
210
Distribution:
| Green indication
Normal
211
Distribution:
| Amber indication
Low pressure
212
Distribution:
| Yellow indication
Overpressure
213
Types of Aircraft Oxygen System:
Pilot of Crew Oxygen System:
Has a microphone connector.
Crew Oxygen Mask
214
Types of Aircraft Oxygen System:
Pilot of Crew Oxygen System:
How many seconds can a flight crew put their mask on?
5 seconds
215
Types of Aircraft Oxygen System:
Pilot of Crew Oxygen System:
• The mask itself consists of a quick donning mask:
o Harness (inflatable)
o Facepiece
o Microphone
216
Types of Aircraft Oxygen System:
Pilot of Crew Oxygen System:
Diluter demand regulator (3 selection)
- Normal
- 100% oxygen
- Emergency
217
Types of Aircraft Oxygen System:
Pilot of Crew Oxygen System:
Crew Oxygen Mask parts (5)
* Smoke goggles
* Integrated microphone
* Harness inflation control valve
* Press to test/emergency knob
* N-100% lever
218
Types of Aircraft Oxygen System:
Pilot of Crew Oxygen System:
Pull the grip of the mask to inflate the harness
Access
219
Types of Aircraft Oxygen System:
Pilot of Crew Oxygen System:
Where is the crew oxygen mask located?
Stowage box, side console (near the armrest of the pilot)
220
Types of Aircraft Oxygen System:
Pilot of Crew Oxygen System:
Where is the location of the crew oxygen bottle?
Lower deck or avionics compartment
221
Types of Aircraft Oxygen System:
| It is only used if the cabin depressurized.
Passenger Oxygen System
222
Types of Aircraft Oxygen System:
Passenger Oxygen System:
Where are oxygen masks located?
- Every seat (passenger service unit)
- All lavatories
- Every attendant station
223
Types of Aircraft Oxygen System:
Passenger Oxygen System:
PSU means
Passenger service unit
224
Types of Aircraft Oxygen System:
Passenger Oxygen System:
It is ____ supplied if cabin depressurization occurs.
automatically
225
Types of Aircraft Oxygen System:
Passenger Oxygen System:
How long is the oxygen supply available?
15 minutes
226
Types of Aircraft Oxygen System:
Passenger Oxygen System:
System activation
- The system is normally activated automatically by a pressure switch in the pressurized area.
- Manually switch the "masked man on".
- The flight crew can use the manual release tool to activate the oxygen supply
- Must be pulled by the passengers
227
Types of Aircraft Oxygen System:
Passenger Oxygen System:
2 ways that oxygen is supplied to the system
- Chemical System
| - Gaseous System
228
Types of Aircraft Oxygen System:
| Normally stored in the cockpit and near the exits in the passenger compartment.
Portable Oxygen System
229
Types of Aircraft Oxygen System:
| It provides a portable supply of breathing oxygen that is independent of the fixed systems.
Portable Oxygen System
230
Types of Aircraft Oxygen System:
| It is intended for emergency and first-aid use.
Portable Oxygen System
231
Types of Aircraft Oxygen System:
| 2 types of Portable Oxygen Systems
- Portable breathing equipment (PBE)
| - Portable oxygen bottle
232
Turbine Engine Aircraft:
| A good source of air to pressurize the cabin.
Compressor in a turbine engine
233
Turbine Engine Aircraft:
| What does hot air provides? (2)
Pressurization and heat
234
Turbine Engine Aircraft:
| Compressor bleed air may be used (2)
- Directly
| - Drive a turbo compressor
235
Turbine Engine Aircraft:
| Used directly or may be used to drive a turbo compressor.
Compressor bleed air
236
Turbine Engine Aircraft:
| It flows through the nozzle of a jet pump at a high velocity.
Compressor bleed air
237
Turbine Engine Aircraft:
| It draws air in from the outside of the aircraft
Compressor bleed air
238
Turbine Engine Aircraft:
| Taken in and compressed
Outside air
239
Turbine Engine Aircraft:
| It is mixed with the engine compressor bleed air that has been used to drive the turbo compressor.
Outside air
240
Turbine Engine Aircraft:
| It enters the cabin after being mixed with engine compressor bleed air.
Outside air
241
Turbine Engine Aircraft:
| Process of the outside air before it enters the cabin (3)
- Taken in
- Compressed
- Mixed with the engine compressor bleed air
