Podcast
Questions and Answers
What is the function of the extraction fan in the forward cargo compartment?
What is the function of the extraction fan in the forward cargo compartment?
- It regulates the cargo temperature when the aft door is open.
- It operates on the ground or when differential pressure is less than 1 PSI. (correct)
- It eliminates the need for heating in the compartment.
- It operates continuously when the isolation valves are closed.
Under which condition is heating unavailable in the forward cargo compartment?
Under which condition is heating unavailable in the forward cargo compartment?
- When the aft cargo door is closed.
- When the hot air valve is fully operational.
- When the forward cargo door is open. (correct)
- When the isolation valves are in the auto position.
How is temperature regulated in the aft cargo compartment?
How is temperature regulated in the aft cargo compartment?
- By constantly running the extraction fan to maintain airflow.
- By using an external cooling unit supplied by the cargo ventilation controller.
- By controlling the trim air valve based on duct inlet and zone temperatures. (correct)
- By adjustments made in the hot bleed air system only.
Which of the following components is NOT displayed on the ECAM Cond Page?
Which of the following components is NOT displayed on the ECAM Cond Page?
What manages the isolation valves and extraction fan in the cargo ventilation system?
What manages the isolation valves and extraction fan in the cargo ventilation system?
In which situation does the extraction fan in the aft cargo compartment run continuously?
In which situation does the extraction fan in the aft cargo compartment run continuously?
What is the role of the trim air valve in the cargo heating system?
What is the role of the trim air valve in the cargo heating system?
What happens to the heating system when the cargo pressure regulating valve is closed in the aft cargo compartment?
What happens to the heating system when the cargo pressure regulating valve is closed in the aft cargo compartment?
Flashcards
Cargo Conditioning System
Cargo Conditioning System
The system that regulates temperature and air flow in the cargo compartments.
Cargo Compartment Air Intake
Cargo Compartment Air Intake
Air is drawn in from the cabin and sent into the cargo compartment.
Cargo Compartment Air Extraction
Cargo Compartment Air Extraction
Air is removed from the cargo compartments to maintain proper pressure and temperature.
Trim Air Valve
Trim Air Valve
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Cargo Ventilation Controller
Cargo Ventilation Controller
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ECAM Cargo Cond Page
ECAM Cargo Cond Page
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Overhead Cargo Heat Panel
Overhead Cargo Heat Panel
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Isolation Valve Push Button Switches
Isolation Valve Push Button Switches
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Study Notes
Cargo Conditioning Overview
- Forward and aft cargo compartments are fully automated for air conditioning and heating.
- Ambient air enters compartments through an inlet isolation valve.
- Air is removed using an extraction fan (ground/low pressure) or discharged overboard via an outlet isolation valve.
- The Cargo Ventilation Controller manages valves and the extraction fan.
Forward Cargo Compartment
- Ventilation System:
- Extraction fan operates when on the ground or differential pressure is below 1 PSI.
- Air is extracted via isolation valves and discharged overboard.
- Heating System (if installed):
- Hot bleed air is supplied by a trim air valve.
- Controller monitors duct inlet and zone temperatures, adjusting the trim air valve for heating regulation.
- Heating is unavailable when the forward cargo door is open or the hot air valve is closed.
Aft Cargo Compartment
- Ventilation System:
- Similar to the forward compartment.
- Extraction fan runs continuously as long as isolation valves are open.
- Heating System (if installed):
- Hot bleed air is supplied via a cargo pressure regulating valve to the trim air valve.
- Controller regulates temperature by controlling the trim air valve.
Pilot Monitoring and Controls
- ECAM Cond Page: Displays inlet/outlet isolation valves, trim air valve, duct inlet temperature, zone temperature, hot air valve status for each cargo compartment.
- Overhead Panel - Cargo Heat Panel:
- Controls cargo heating/ventilation systems (if installed), including isolation valve push-button switches (auto) and temperature selectors.
- Temperature selectors send demand signals to adjust compartment temperature.
- Hot air push button switch controls aft cargo pressure regulating valve.
Operation Summary
- Normal Operation: Push button switches remain in auto position; set temperatures using selectors (mid-position approximately 15°C).
- System Automation: The system manages ventilation and heating based on environmental conditions requiring minimal pilot input.
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