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┃I  ~-~ A318                     ┃I      AIR CAIR/CONDITIONING  ┃SEQ 105 1 ┃I REV 28  ┃
┃ aw aw ,, ~% A319               ┃                              ┃          ┃          ┃
┃ Lli,~ A320                     ┃                              ┃          ┃          ┃
┃      A~7-~'M" A321             ┃                              ┃          ┃          ┃
┃   FLIGHT CREW OPERATING MANUAL ┃                              ┃          ┃          ┃
┗━━━━━━━━━━━━━━━━┻━━━━━━━━━━━━━━━┻━━━━━┻━━━━━┛
Temperature regulation is automatic and controlled by one zone controller and two pack
controllers.
PACK CONTROLLER
Each pack controller regulates the temperature of its associated pack, in accordance with
a demand signal from the zone controller, by modulating the bypass valve and the ram air
inlet flaps.
The ram air inlet flaps close during takeoff and landing to avoid ingestion of foreign matter.
Note : During takeoff, the ram air inlet flaps close when TO. power is set and
       the main landing gear struts are compressed.
       During landing they close as soon as the main landing gear struts are compressed,
       as long as speed is at or above 70 knots.
        They open 20 seconds after the speed drops below 70 knots.
The pack controllers also regulate flow by modulating the associated pack flow contro
valve.
ZONE CONTROLLER
PACK FLOW CONTROL
The crew can use the PACK FLOW selector to adjust the pack flow for the number of
passengers and for external conditions.
Whatever the crew selects, the system delivers high flow for any of the following
circumstances :
- in single-pack operation,
- when the APU is supplying bleed air.
The system delivers normal flow if the crew selects LO flow and the temperature demand
cannot be satisfied.
Engine pressure demand
When the cooling demand
the zone controller sends a
ncrease the minimum idle
APU flow demand
n one zone cannot be satisfied, if the bleed pressure is too low,
pressure demand signal to both Engine Interface Units (EIU) to
and to raise the bleed pressure.
When the APU bleed valve is open, the zone controller signals the APU's Electronic Control
Box (ECB) to increase the APU flow output when any zone temperature demand cannot be
satisfied.
CCM ALL
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┃I  -~ A318                      ┃AIR COND/PRESS/VENT ┃1.21.10     P 7   ┃
┃  .*,,.8, ,, ~L,~ A319          ┃                    ┃                  ┃
┃ Lii,~ A320                     ┃                    ┃                  ┃
┃                                ┃                    ┣━━━━┳━━━━┫
　
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本文鏈接地址：AIRBUS A320 Flight Crew Operating Manual1(92)