320系列气动系统

航空

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航空

PNEUMATIC MENU System Presentation 1/28
PNEUMATIC MENU
System Presentation 2/28
Pneumatic
System
The A320 pneumatic system supplies
high pressure air for :
• air conditioning
• wing anti icing
• water pressurization
• hydraulic reservoir pressurization
• engine starting
Wing anti
icing
Air
conditioning
Water
pressurization
Hydraulic
reservoir
pressurization
Engine
starting
PNEUMATIC MENU
System Presentation 3/28
Pneumatic
System
GGRROOUUNNDDAAIIRR
AAPPUU
EENNGGIINNEESS
High pressure air can be supplied
from three sources :
• the engine bleed system
• the APU
• an external high pressure ground
power unit
Wing anti
icing
Air
conditioning
Water
pressurization
Hydraulic
reservoir
pressurization
Engine
starting
PNEUMATIC MENU
System Presentation 4/28
Pneumatic
System
BMC 1 BMC 2
The pneumatic system is controlled
and monitored by 2 Bleed Monitoring
Computers (BMC).
There is one BMC for each engine
bleed system.
Both BMC are interconnected and if
one fails, the other takes over most of
its functions.
PNEUMATIC MENU
System Presentation 5/28
BMC 2
There are air leakage detection
loops installed in the vicinity of the hot
air ducts in the fuselage, wings and
pylons.
If a leak is detected, a signal is sent
to the BMC which automatically isolate
the affected area.
BMC 1
PNEUMATIC MENU
System Presentation 6/28
In flight, the primary source for high
pressure air is the engines.
Both engines bleed systems are
similar.
PNEUMATIC MENU
System Presentation 7/28
Air is bled from two compressor stages
of the engine, the Intermediate Pressure
(IP) port and the High Pressure (HP) port.
IIPP HHPP
PNEUMATIC MENU
System Presentation 8/28
There is a HP valve which can cut off
bleed air from the high pressure port.
It is automatically controlled by the
system.
IP HP
PNEUMATIC MENU
System Presentation 9/28
The High Pressure section (HP) is only
used when there is insufficient pressure
from the Intermediate output (IP), i.e.
when the engines are at idle.
Once the engine speed is high enough,
the IP pressure is sufficient and the HP
valve closes.
IP HP
PNEUMATIC MENU
System Presentation 10/28
The air extracted from the compressor
then goes to a bleed valve which acts as a
shut off and pressure regulating valve.
IP HP
BLEED
VALVE
PNEUMATIC MENU
System Presentation 11/28
Since the temperature of the bleed air is
high, it passes through a precooler before
being distributed to the users.
The precooler uses cool air from the
engine fan to regulate the temperature.
IP HP
BLEED
VALVE
Precooler
PNEUMATIC MENU
System Presentation 12/28
ENG 2 has an identical BLEED
SYSTEM.
IP HP
BLEED
VALVE
Click on the blue box to
display the engine 2 bleed
system.
Precooler
ENG 1
PNEUMATIC MENU System Presentation 13/28
IP HP
BLEED
VALVE
Precooler
ENG 1
HP IP
BLEED
VALVE
Precooler
ENG 2
PNEUMATIC MENU
System Presentation 14/28
IP HP HP IP
BLEED
VALVE
BLEED
VALVE
Both systems are connected by a
crossbleed duct.
A crossbleed valve permits their
interconnection or isolation.
X BLEED
VALVE
Precooler Precooler
ENG 1 ENG 2
PNEUMATIC MENU
System Presentation 15/28
IP HP HP IP
BLEED
VALVE
BLEED
VALVE
The APU can also be used for
BLEED air supply.
This is usually done on ground for
air conditioning and for engine start.
However, APU BLEED air is also
available in flight.
X BLEED
VALVE
APU
Precooler Precooler
ENG 1 ENG 2
PNEUMATIC MENU
System Presentation 16/28
IP HP HP IP
BLEED
VALVE
BLEED
VALVE
APU BLEED air is controlled by the
APU bleed valve which operates as a
shut off valve.
X BLEED
VALVE
APU BLEED
VALVE
APU
Precooler Precooler
ENG 1 ENG 2
PNEUMATIC MENU
System Presentation 17/28
ENG 1 ENG 2
APU
GPU
IP HP HP IP
BLEED
VALVE
BLEED
VALVE
X BLEED
VALVE
Should the APU not be available,
a high pressure ground power unit
can be connected.
This completes the pneumatic
system. We will now show you how
system information is displayed to the
pilots.
APU BLEED
Precooler VALVE
Precooler
PNEUMATIC MENU
System Presentation 18/28
APU
IIP HP HP IIP
PPrreeccoooolleerr PPrreeccoooolleerr
GND
The pneumatic system is displayed
on the ECAM BLEED page.
Click on the diagram to display
the ECAM BLEED page...
PNEUMATIC MENU
System Presentation 19/28
APU
IIP HP HP IIP
PPrreeccoooolleerr PPrreeccoooolleerr
GND
Information on the pneumatic
system is displayed on the lower part
of the ECAM BLEED page.
Note : we have shaded the upper
part of the ECAM BLEED page
because it is related to the AIR
CONDITIONING chapter. This will be
covered in a later module.
PNEUMATIC MENU
System Presentation 20/28
Let’s identify the system
components on the ECAM page now :
• The IP and HP ports,
• the HP valves,
PNEUMATIC MENU
System Presentation 21/28
• the engine bleed valves,
• the precoolers,
• the APU bleed valve,
PNEUMATIC MENU
System Presentation 22/28
• the crossbleed valve
• the high pressure ground
connection.
PNEUMATIC MENU
System Presentation 23/28
The following information is also
displayed :
• bleed air pressure
• bleed air temperature
• engine identification numbers
PNEUMATIC MENU
System Presentation 24/28
Controls for the pneumatic system are
part of the AIR COND panel, located on
the overhead panel.
Again, we have shaded those controls
which belong to the AIR CONDITIONING
chapter.
PNEUMATIC MENU
System Presentation 25/28
Each engine bleed valve is
controlled by its associated pb sw on
the AIR COND panel.
PNEUMATIC MENU
System Presentation 26/28
The APU bleed valve is controlled
by its associated pb sw.
PNEUMATIC MENU
System Presentation 27/28
The X BLEED selector enables the
pilot to open and close the crossbleed
valve manually or to let the system
operate the X BLEED valve
automatically.
PNEUMATIC MENU System Presentation 28/28
You will learn to interpret all the
indications and operate these
controls in the normal and abnormal
operation modules.
NEXT
Module
completed !
PNEUMATIC MENU System Presentation 29/28
LLIISSTTOOFFSSUUBBJJEECCTTSS
EXIT
AUDIO GLOSSARY FCOM
RETURN
SSYYSSTTEEMMIINNTTRROODDUUCCTTIIOONN
EECCAAMMBBLLEEEEDDPPAAGGEE
BLEED CONTROLS AND
INDICATIONS
AAIIRRCCOONNDDPPAANNEELLLLOOCCAATTIIOONN

txc2004701

谢谢楼主的辛勤与无私

yw_1221

很实用的东东。谢谢。

bocome

320系列气动系统

tissle

好资料，学习了。。。

diguo

好东西，好好学习一下