320系列机组课程增压系统

航空

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航空

PRESSURIZATION MENU System Presentation 1/32
PRESSURIZATION System Presentation 2/32
The pressurization system on the A320 normally operates
automatically to adjust the cabin altitude and rate of
change of altitude to ensure maximum passenger comfort
and safety.
MENU
PRESSURIZATION MENU System Presentation 3/32
PRESSURIZATION MENU System Presentation 4/32
PRESSURIZATION MENU System Presentation 5/32
PRESSURIZATION System Presentation 6/32
The pressurized areas are;
• the cockpit
• the avionics bay
• the cabin
• and the cargo compartments.
MENU
PRESSURIZATION System Presentation 7/32
Pack 1 Pack 2
The Pressurized Areas
The concept of the system is simple.
Air is supplied from the Air Conditioning Packs to the
pressurized areas.
MENU
PRESSURIZATION System Presentation 8/32
The Pressurized Areas
Outflow
Valve
An Outflow valve is used to regulate the amount of air
allowed to escape from the pressurized areas.
Pack 1 Pack 2
MENU
PRESSURIZATION System Presentation 9/32
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Automatic control of the outflow valve is provided by two
Cabin Pressure Controllers. Each controller has an
electric motor to move the outflow valve.
CPC 1 CPC 2
Electric
Motor
Electric
Motor
Pack 1 Pack 2
MENU
PRESSURIZATION System Presentation 10/32
SYS 1 SYS 2
A controller/ motor combination is known as a system .
Only one system will operate at any one time with the
other system acting as backup.
CPC 1 CPC 2
Pack 1 Pack 2
MENU
PRESSURIZATION System Presentation 11/32
A third motor is installed for use in the event of both
automatic systems failing and requires a manual input to
open or close the outflow valve.
Manually Controlled
Motor
MAN
Pack 1 Pack 2
MENU
PRESSURIZATION System Presentation 12/32
SYS 1
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To avoid excessive cabin differential pressure safety
valves are installed.
Pack 1 Pack 2
MENU
PRESSURIZATION System Presentation 13/32
Cabin
Differential Pressure
Let us look at the operation of the outflow valve for an aircraft in
cruise and what happens to cabin differential pressure, cabin
altitude, and Cabin Vertical speed. We will start with Cabin
Differential Pressure.
If the outflow valve is closed, or only allowing a small amount of
air to escape, then the cabin differential pressure will increase.
SYS 1
Pack 1 Pack 2
MENU
PRESSURIZATION System Presentation 14/32
Now let’s look at what happens to Cabin Altitude .
If the outflow valve is closed, or only allowing a small
amount of air to escape, then the Cabin Altitude will
descend.
SYS 1
Pack 1 Pack 2
Cabin Altitude
MENU
PRESSURIZATION System Presentation 15/32
Cabin Altitude
We can also see what the cabin is doing by reference to
vertical speed. When the outflow valve closes the cabin
altitude will decrease with a Vertical Speed.
SYS 1
Cabin
Vertical Speed
Pack 1 Pack 2
MENU
PRESSURIZATION System Presentation 16/32
SYS 1
If the outflow valve is fully open, a lot of air is allowed to
escape, the cabin pressure will decrease, the cabin
altitude will climb with a Vertical Speed.
Pack 1 Pack 2
Cabin Altitude
Cabin
Vertical Speed
Cabin
Differential Pressure
MENU
PRESSURIZATION System Presentation 17/32
Pack 1 Pack 2
SYS 1
The crew can monitor all cabin pressure functions on the
ECAM CAB PRESS Page.
MENU
PRESSURIZATION System Presentation 18/32
Let’s look at the information, associated with the
pressurization system, that is presented on the CAB
PRESS page. The pack indication is displayed green
when the associated pack is on.
MENU
PRESSURIZATION System Presentation 19/32
The Outflow valve position can be monitored, and the
system controller in use is shown.
MENU
PRESSURIZATION System Presentation 20/32
There is a single indication for the safety valves.
We will look at how this indication changes in the
Abnormal operation module.
MENU
PRESSURIZATION System Presentation 21/32
The Cabin Differential Pressure, or Delta P, shows the
difference, in PSI, between the cabin pressure and
external pressure.
This differential pressure will be at zero on the ground
and increase as the aircraft climbs.
MENU
PRESSURIZATION System Presentation 22/32
The Cabin Vertical Speed shows the rate of change, in
Ft/Min, of cabin altitude.
For passenger comfort the pressurization system will aim
to keep this rate of change as small as possible.
MENU
PRESSURIZATION System Presentation 23/32
The Cabin Altitude is also shown.
MENU
PRESSURIZATION System Presentation 24/32
The Vent, Inlet and Extract indications are associated with
the Avionics Ventilation System and will be discussed in a
separate module.
MENU
PRESSURIZATION System Presentation 25/32
ECAM CRUISE Page
On the ECAM Cruise Page there are indications of;
• Cabin Differential pressure
• Cabin vertical speed
• Cabin altitude
MENU
PRESSURIZATION System Presentation 26/32
There is also an indication of cabin vertical speed on the
ECAM Door page. Note that this indication is only
displayed when the aircraft is airborne.
ECAM DOOR/OXY Page
MENU
PRESSURIZATION System Presentation 27/32
On the overhead panel there is a CABIN PRESS panel
containing controls to operate the Pressurization system.
Under normal conditions no pilot action is required on this
panel during flight.
MENU
PRESSURIZATION System Presentation 28/32
The Pressurization MODE Select switch has two settings:
Automatic and Manual.
MENU
PRESSURIZATION System Presentation 29/32
The normal position for this switch is, lights out. In this
position the pressurization system is in Automatic mode.
MENU
PRESSURIZATION System Presentation 30/32
MAN
The use of Manual Mode and the Manual Vertical Speed
control will be discussed in the abnormal operation
module.
MENU
PRESSURIZATION System Presentation 31/32
The Landing Elevation selector normally remains in the
Auto position. Landing elevation, which is required by the
Pressurization system, is then provided by the FMGS
based upon elevation of the destination airport. If the
landing elevation is not available from the FMGS, then it
can be set manually using this selector. You will use this
selector in the abnormal operation modules.
MENU
PRESSURIZATION System Presentation 32/32
The guarded Ditching switch is provided to close all
valves below the waterline so that the aircraft can be
sealed in the unlikely event of a ditching.
MENU NEXT
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PRESSURIZATION MENU System Presentation 33/32
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EXIT
AUDIO GLOSSARY FCOM
RETURN
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EECCAAMMIINNDDIICCAATTIIOONNSS
PRESSURIZATION CONTROL
PANEL

bocome

非正常操作

tissle

好资料，学习中。。。

diguo

好东西。好好学习一下