Air management system Flashcards
What is the purpose of the Air Management System?
Regulates and distributes air, maintains safe cabin altitude.
What are the components of the Air Management System?
Pneumatics, Environmental Control System (ECS), Pressurization.
What sources provide air for Pneumatics?
Engines, APU, External air source.
What are the uses of Pneumatics?
ECS, Engine Start, Pressurization, Anti-Ice, Water Pressure.
From which stages do engines provide bleed air?
6th (Low) and 10th (High) stages of the compressor.
What is the function of the pre-cooler in the pylon?
Cools incoming air.
What is engine bleed air used for?
ECS, Anti-ice, Water pressure, Pressurization, Engine start.
What is APU bleed used for?
ECS, Water pressure, Pressurization, Engine start.
What is the purpose of the air conditioning cart?
The air conditioning cart can be used to cool the aircraft’s cabin.
What can be used to start an aircraft’s engine?
A High Pressure Air Start cart or air bottle can be used to start an aircraft’s engine.
What must be done to prevent air contamination when starting with an external air source?
Both packs need to be turned OFF when starting with an external air source.
What does the Environmental Control System (ECS) consist of?
The ECS consists of two packs, one located in each wing to fuselage fairing.
Which engine provides air for pack 1?
Engine 1 provides air for pack 1.
Which engine provides air for pack 2?
Engine 2 provides air for pack 2.
How is incoming air temperature controlled?
Incoming air temperature is set via temperature control knobs in the cockpit or by the Flight Attendant.
What is the maximum altitude a single pack can provide air for the entire ECS?
A single pack can provide air for the entire ECS to a maximum altitude of FL310.
What is the function of the recirc fans?
Recirc fans help reduce the load on the packs by recirculating already-conditioned air.
What is the fresh air to recirculated air ratio provided by recirc fans?
Recirc fans provide 52% fresh air to 48% recirculated air.
When will the recirc fans not work?
The fans will not work when the DUMP button is pressed, smoke is detected, or the respective pack is OFF.
What is the purpose of gasper ventilation?
Gasper ventilation provides personal air to each pilot and passenger position.
How is gasper ventilation supplied?
Gasper ventilation is supplied by air from the right recirc fan.
How are the electronic compartments ventilated?
The forward, central, and aft electronic bays are ventilated with conditioned air from the cabin.
How is the forward cargo bay ventilated?
The forward cargo bay receives air from the cabin and is then vented overboard.
How is the aft cargo bay ventilated?
The aft cargo bay is not vented.