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CRJ Pneumatics
Environmental Control Systems CRJ- For Advanced Systems
Question | Answer |
---|---|
How many bleed air pneumatic systems | 2 |
10th stage bleed is used for | Starting, air-conditioning, pressurization |
14th stage bleed air is used for | Anti ice, thrust reverses |
Any source of bleed air can pressurize manifold when | Isolation valve is open |
If electrical power is lost the 10 th stage SOV will | Close due to spring loading |
APU bleed air is controlled by the | LCV |
The two ACM packs revive bleed air from | 10th stage or apu |
How many ram air ducts are there for cooling of bleed air | 1 |
Pack bleed air is cooled by | Heat exchangers and acm |
Ram air taken from the scoop is used for cooling | Heat exchangers bleed air |
Cabin pressure is maintained by | 2 outflow valves |
Outflow valves maintain a psi differential of | 8.4 psi |
Pressing emer depr causes | Outflow valves to open |
Landing field elevation knob is used to | Set destination airport altitude |
In manual mode the up position allow sthe outflow valves | to Open and cabin altitude to increase |
In manual mode down position the outflow valves | Close and the cabin altitude decreases |
How is bleed air directed to wing leading edge for anti ice | Piccolo tubes |
Where do wings and cowls get bleed air | 14th stage |