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┃ ┃ ┣━━━━┳━━━━┫
┃ A~7-~'M" A321 ┃ PRESSURIZATION ┃SEQ 001 ┃REV 32 ┃
┃ FLIGHT CREW OPERATING MANUAL ┃ ┃ ┃ ┃
┗━━━━━━━━━━━━━━━━┻━━━━━━━━━━┻━━━━┻━━━━┛
The cabin pressurization system has four general functions :
- Ground function : Fully opens the outflow valve on ground.
- Prepressurization : During takeoff, increases cabin pressure to avoid a surge in cabin
pressure during rotation.
- Pressurization in flight : Adjusts cabin altitude, and rate of change to provide passengers
with a comfortable flight.
- Depressurization : After touchdown, gradually releases residual cabin overpressure
before the ground function fully opens the outflow valve.
The system consists of :
- Two Cabin Pressure Controllers (CPC)
- One outflow valve, with an actuator that incorporates three motors (two for automatic
operation, one for manual operation)
- One control panel
- Two safety valves
Any one of the three independent electric motors may power the outflow valve.
Normally, one of the two cabin pressure controllers operates the outflow valve by means
of its associated automatic motor.
In case of ditching, an override switch on the control panel allows the flight crew to close
the outflow valve and all valves below the flotation line.
The flight crew can set the system to operate automatically, semi-automatically, or
manually.
In normal operation, cabin pressurization is fully automatic.
AUTOMATIC OPERATION
The flight crew monitors the operation of the system, but does
pressure in the cabin follows external schedules that the system
the Flight Management and Guidance System (FMGS).
When FMGS data is not available for automatic pressurization,
select the landing field elevation.
nothing to control it. Air
receives as signals from
the crew only needs to
The pressurization system then uses the manually-selected landing field elevation for
internal schedules.
MANUAL OPERATION
In manual mode, the flight crew controls the cabin altitude via the manual motor of the
outflow valves, by operating controls on the pressurization control panel.
CCM ALL
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┃ ┃ ┃1.21.20 P 2 ┃
┃ ┃ ┣━━━━━┳━━━━━┫
┃I ~-~ A318 ┃l AIR COPRESSURIZATION ┃SEQ 100 1 ┃I REV 23 ┃
┃ aw aw ,, ~L,~ A319 ┃ ┃ ┃ ┃
┃ Lii,~ A320 ┃ ┃ ┃ ┃
┃ A~7-~'M" A321 ┃ ┃ ┃ ┃
中国航空网 www.aero.cn
航空翻译 www.aviation.cn
本文链接地址：
AIRBUS A320 Flight Crew Operating Manual1(105)
