Flashcards
VENTILATION study guide
Cards in this deck (29)
- 1what range of temps can the compartments be set to?18 -30 C
- 2What is the COLD position?18 C
- 3What is the HOT position?30 C
- 4how are the zone temperatures controlledby the trim air valves
- 5what controls the packs?ACSC 1 & 2
- 6What modulates the trim air valvesACSC 1 & 2
- 7What 3 conditions cause the pack flow to be higher than the selected on the overhead panel?- in single pack flow - HI
- When the APU is supplying bleed air, PACK FLO high
- If LO flow is selected but the temperature demand cannot be met (so MED is selected to meet temp demand) - 8what happens to the PACKS during engine start?PACK valve closes automatically
- 9what happens to the PACK flow if the APU is supplying bleed air to both packsPACK flow goes to high
- 10when does the pack ram air inlet flap close automatically?during take off - when TO power sets and landing gear struts are compressed
During Landing - when landing gear struts compress if speed is at or above 70 kts - 11when do the pack ram air inlet flaps close automatically?On lift off
20 seconds after the speed drops below 70 kts - 12what happens when the RAM air pushbutton is selected ON?emergency ram air inlet opens
- 13what happens to the opening of the ram air inlet valves when delta P over 1 psi ?= the outflow valve control remains normal, no emergency ram
- 14what happens to the opening of the ram air inlet valves when delta P less than 1 psi ?outflow valve opens to about 50 % when under auto control
- 15what happens when ACSC 1 has a double-lane failure? VALVES REMAIN IN THE POSITION THEY WERE IN WHEN THEY FAILEDPACK FLOW CONTROL VALVE 1 - CLOSE
PACK 1 - FAIL, PACK 2 - HIGH
HOT AIR PRESS REGULATOR VALVE - CLOSE
ALL TRIM AIR VALVES SHUT - 16What happens if ACSC 2 has a double lane failure? VALVES REMAIN IN THE POSITION THEY WERE IN WHEN THEY FAILEDPACK FLOW CONTROL VALVE 2 CLOSES
PACK 2 FAIL - PACK 1 HIGH
CABIN AFT AND FWD TRIM AIR VALVES CLOSE - 17What does ACSC stand for?Air conditioning System Controller
- 18what happens when a duct overheat occursHOT AIR PRESS regulating valve closes
All Trim air valves close - 19what is the Outflow Valve position when the AC is on the ground?OPEN
- 20what is the Outflow Valve position during take off?CLOSE
- 21what is the cabins rate of climb when the AC is in the climb out?Same rate as the AC rate of climb
- 22During Cruise what is the cabin alt?AC level off altitude
or landing field elevation
WHICHEVER IS HIGHER - 23what is the cabins rate of descent when the AC is descending?AC rate of descent
- 24what is the Outflow Valve position after landing?55 s after landing the outflow valve fully opens, 500ft/min
- 25What is the max cabin alt in the cruise?8000 ft
- 26when is the ram air pushbutton used?in the event of a depressurisation as its bypasses the airconditioning unit
- 27how many valves can drive the OFV?3
x2 automatic
x1 manual - 28CPC?CPC?
- 29If a pilot suspects that the selected CPC is malfunctioning, how can the pilot change CPC manually?MODE SEL - MAN
wait 10 seconds
RETURN TO AUTO
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- PILOT A320 TYPE Flashcards on VENTILATION study guide, created by Ella Davies on 17/10/2023.
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- Ella Davies
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