Pressurization question (aircraft systems HW
02-10-2013, 09:59 PM
#1
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Pressurization question (aircraft systems HW
I have no idea what to do about this, my proffessor never gave me any tips on how to solve this, it isn't even in our systems book!
A cabin door which has a width of 26" and a height of 70" will produce a force on the structure of ____Lbs when the cabin differential pressure is at 7.3p.s.i
I understand the cabind pressure differential but no clue about the resultant force.
A cabin door which has a width of 26" and a height of 70" will produce a force on the structure of ____Lbs when the cabin differential pressure is at 7.3p.s.i
I understand the cabind pressure differential but no clue about the resultant force.
02-10-2013, 10:47 PM
#3
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02-10-2013, 11:23 PM
#4
Day puke
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The real lesson to learn there is why a pilot should always insure that cabin pressure equals outside air pressure prior to opening the door.
For example, a 0.1 psi difference when the flight attendant opens the door: 26*70*0.1=182 pounds of force. If she/he as a good grip on the handle, she/he will end up face down on the ramp.
Just food for thought.
For example, a 0.1 psi difference when the flight attendant opens the door: 26*70*0.1=182 pounds of force. If she/he as a good grip on the handle, she/he will end up face down on the ramp.
Just food for thought.
02-11-2013, 12:43 AM
#5
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On behalf of our young "Hawker driving" scholar, thanks Jungle! Kids these days.
02-11-2013, 01:32 PM
#7
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To avoid landing pressurized, the system would pressurize to 100' ABOVE airport elevation.
Joe
02-11-2013, 02:47 PM
#8
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HSLD, I think you have the explanation backwards on this one. Many pressurization systems land 100' below field elevation to maximize smoothness in the pressurization schedule, but it leaves the airplane pressurized to a slight extent. Most aircraft that I have flown then slowly dump this residual pressurization by a weight on wheels switch.
To avoid landing pressurized, the system would pressurize to 100' ABOVE airport elevation.
Joe
To avoid landing pressurized, the system would pressurize to 100' ABOVE airport elevation.
Joe
Sorry for the typo.
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