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Questions about the different choices that aircraft designers (typically aerospace engineers) make in order to create an aircraft.
4
votes
1
answer
618
views
What are the specific number of passengers and conditions required to select HI, NORM, or LO...
On the Airbus A320 there is a pack flow knob and you can either select HI(120%), NORM (100%), or LO (80%). You choose which one according to the number of passengers and ambient conditions. Obviously …
2
votes
3
answers
3k
views
How does the pressure change in the Air Cycle Machine?
In this picture:
#3 says:
"Air expanding to ambient pressure turns expansion turbine, is greatly cooled, and drives compressor."
I understand all of that except for the "air expanding to ambi …