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+--- Thread: new emergency suggestion (/showthread.php?tid=5495)
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new emergency suggestion - Sovek - 22-10-2005
Ok, I know its possible for a third party program (in my case, panel) to open doors, so how about a door comes loose or something and is blown away,
would make for an intresting failure, not to mention the cost of fixing it.
so how bout it dan?
Re: new emergency suggestion - kvuo - 22-10-2005
in a pressurized airliner, a door cant "come loose". they seal on the inside. higher pressure inside, lower pressure outside.. 8 psi or so..
You couldn't open a door by hand on an airliner at altitude if you tried -- with 3 of your friends.
Re: new emergency suggestion - Nuttycomputer - 22-10-2005
Besides the fact that you've also got the air pushing on it as the aircraft is moving. It's like sticking your hand out a window of a moving
car. Your hand get's blown back.
Re: new emergency suggestion - Dutch64 - 22-10-2005
And i think it would just be "another decompression"
It's in there already
Re: new emergency suggestion - Sovek - 22-10-2005
so in that case when you press SHFT+E it shouldnt open the door.
Re: new emergency suggestion - Nuttycomputer - 23-10-2005
Technically but Flight Simulator doesn't simulate that because in the program itself it has no impact on flight.
Re: new emergency suggestion - kvuo - 23-10-2005
shift-E shouldn't open a door -- FS9 is incorrect.. also, the wind outside "air pushing on it" should have no effect either (there is really no
outside air pushing on it). the door is pushed from the inside out by cabin pressure. there is a tremendous amount of pressure
differential in an airliner at high altitude, all supplied by bleeds on the compressor stages of the engines.
for a door, figure 6 feet by 3 feet by 8 psi, I figure somewhere around 20,000 lbs of force keeping the door closed.
Re: new emergency suggestion - jeffrey11190 - 23-10-2005
Quote:kvuo wrote:\
shift-E shouldn't open a door -- FS9 is incorrect.. also, the wind outside "air pushing on it" should have no effect either (there
is really no
outside air pushing on it). the door is pushed from the inside out by cabin pressure. there is a tremendous amount of pressure
differential in an airliner at high altitude, all supplied by bleeds on the compressor stages of the engines.
for a door, figure 6 feet by 3 feet by 8 psi, I figure somewhere around 20,000 lbs of force keeping the door closed.
could it still open.Somehow
Re: new emergency suggestion - alphaone - 23-10-2005
Quote:kvuo wrote:wait a minute... isn't that backwards? The higher pressure wants to rush to the lower pressure, to equalize. So the door would want to come open.
in a pressurized airliner, a door cant "come loose". they seal on the inside. higher pressure inside, lower pressure outside.. 8 psi or so..
You couldn't open a door by hand on an airliner at altitude if you tried -- with 3 of your friends.
Think about diving bells. Positive vs negative pressure.
Re: new emergency suggestion - SWAFO - 23-10-2005
Quote:alphaone wrote:
Quote:kvuo wrote:wait a minute... isn't that backwards? The higher pressure wants to rush to the lower pressure, to equalize. So the door would want to
in a pressurized airliner, a door cant "come loose". they seal on the inside. higher pressure inside, lower pressure
outside.. 8 psi or so..
You couldn't open a door by hand on an airliner at altitude if you tried -- with 3 of your friends.
come open.
Think about diving bells. Positive vs negative pressure.
I'm with alphaone on this one! I think you've got it backwards KVUO. Then again, I'm not certain, it just sounds like Alphaone's
explanation would make more sense (based on my very limited knowledge of physics, or whatever you would call this issue
)Re: new emergency suggestion - AeroJim - 23-10-2005
well in a C172 you could open the door and fly with it/
Re: new emergency suggestion - fruitfly - 23-10-2005
Quote:alphaone wrote:
Quote:kvuo wrote:wait a minute... isn't that backwards? The higher pressure wants to rush to the lower pressure, to equalize. So the door would want to
in a pressurized airliner, a door cant "come loose". they seal on the inside. higher pressure inside, lower pressure
outside.. 8 psi or so..
You couldn't open a door by hand on an airliner at altitude if you tried -- with 3 of your friends.
come open.
Think about diving bells. Positive vs negative pressure.
Precisely! So they make the door opening somewhat smaller than the door itself. You can't just swing the door open. There's a
mechanism that first pushes the door inside the airplane, rotates it and vertically slides it out through a small opening on the airframe that
is of the same highth as the door. PMDG 747 has it nicely animated.
Re: new emergency suggestion - Dutch64 - 23-10-2005
Yep, kvuo and fruitfly are right, doors first need to 'come in' a bit before they can be opened to the outside and since the pressure inside is much
higher than outside it won't happen.
Furthermore, the high speed of wind on the outside of the plane will cause a very small vacuum layer just outside the door which will even make the
effect of the 'pressure difference' stronger.
Re: new emergency suggestion - fruitfly - 24-11-2005
well, well, well..... what do you say, just when we had reached an agreement, this happened:
http://www.cnn.com/2005/WORLD/asiapcf/11/21/australia.tourist.ap/index.html
Unfortunately they wouldn't let her finish the experiment ........
Re: new emergency suggestion - pagir - 24-11-2005
I can't understand why she was prosecuted for that: for myself, I prefer when my guests go outside to smoke a cigarette
Pagir