Aircraft pulling water vapor out of the air

[sciwizam]

Originally posted by: ViviTheMage

Originally posted by: sciwizam
Bit Off-topic: Can anyone ID the song here?

http://www.youtube.com/watch?v...u8djZ4&feature=related

.......

A+++, would ask again!

http://www.youtube.com/watch?v...2Amvj0&feature=related

@ 0:43 :Q

 

[BrunoPuntzJones]

Originally posted by: sciwizam
Bit Off-topic: Can anyone ID the song here?

http://www.youtube.com/watch?v...u8djZ4&feature=related

Blur - Song 2

 

[soccerballtux]

Originally posted by: Train
extremely low pressure above the wings, the same thing that causes the lift.

Low pressure causes h20 to condensate, similar to low pressure weather systems often causing fog

I don't know about low pressure, but I know a lot of the time it's from HIGH pressure. Think about it, what's going to cause water to evaporate and boil at a lower temperature? Lower pressure (that's why on the back of the pizza boxes it has a different temperature for if you live like 5k feet above sea level or whatever.

Low air pressure means there is less pressure keeping the water molecules down in a cup of water. Higher pressure means there is more force keeping the water from evaporating.

 

[rudder]

Originally posted by: FleshLight

Originally posted by: Train
extremely low pressure above the wings, the same thing that causes the lift.

Low pressure causes h20 to condensate, similar to low pressure weather systems often causing fog

Yeah the plane creates pressure differentials in the air. When the area with the lower pressure reaches the condensation vapor pressure, the water vapor condenses and precipitates.

But I want to know if the plane were on a treadmill... would the vapor condense?

 

[Train]

Originally posted by: soccerballtux

Originally posted by: Train
extremely low pressure above the wings, the same thing that causes the lift.

Low pressure causes h20 to condensate, similar to low pressure weather systems often causing fog

I don't know about low pressure, but I know a lot of the time it's from HIGH pressure. Think about it, what's going to cause water to evaporate and boil at a lower temperature? Lower pressure (that's why on the back of the pizza boxes it has a different temperature for if you live like 5k feet above sea level or whatever.

Low air pressure means there is less pressure keeping the water molecules down in a cup of water. Higher pressure means there is more force keeping the water from evaporating.

Uhh, high pressure ABOVE the aircrafts wing would make the plane crash, or not take off at all.

 

[AlienCraft]

Originally posted by: Epic Fail
The plane is sweating from flying on a treadmill.

Dammit Jim !

HAha great minds think alike

 

[soccerballtux]

Originally posted by: Train

Originally posted by: soccerballtux

Originally posted by: Train
extremely low pressure above the wings, the same thing that causes the lift.

Low pressure causes h20 to condensate, similar to low pressure weather systems often causing fog

I don't know about low pressure, but I know a lot of the time it's from HIGH pressure. Think about it, what's going to cause water to evaporate and boil at a lower temperature? Lower pressure (that's why on the back of the pizza boxes it has a different temperature for if you live like 5k feet above sea level or whatever.

Low air pressure means there is less pressure keeping the water molecules down in a cup of water. Higher pressure means there is more force keeping the water from evaporating.

Uhh, high pressure ABOVE the aircrafts wing would make the plane crash, or not take off at all.

Are you saying water doesn't boil and evaporate more readily at higher altitudes? What do you think happens to water in space? It boils even though the water has no heat except it's own.

My guess is there is lower pressure when the plane is adjusting pitch up, this causes the water vapor in the air to become cold enough to both make up for the lower pressure, AND then condense.

Low pressure does not cause water to condense.

Why do you think industrial air compressors blow air out every 5 or so minutes? Because they have to clear out the water that was in the air, that condensed, and is now at the bottom of the air tank.

 

[Savij]

Originally posted by: soccerballtux

Originally posted by: Train

Originally posted by: soccerballtux

Originally posted by: Train
extremely low pressure above the wings, the same thing that causes the lift.

Low pressure causes h20 to condensate, similar to low pressure weather systems often causing fog

I don't know about low pressure, but I know a lot of the time it's from HIGH pressure. Think about it, what's going to cause water to evaporate and boil at a lower temperature? Lower pressure (that's why on the back of the pizza boxes it has a different temperature for if you live like 5k feet above sea level or whatever.

Low air pressure means there is less pressure keeping the water molecules down in a cup of water. Higher pressure means there is more force keeping the water from evaporating.

Uhh, high pressure ABOVE the aircrafts wing would make the plane crash, or not take off at all.

Are you saying water doesn't boil and evaporate more readily at higher altitudes? What do you think happens to water in space? It boils even though the water has no heat except it's own.

My guess is there is lower pressure when the plane is adjusting pitch up, this causes the water vapor in the air to become cold enough to both make up for the lower pressure, AND then condense.

Low pressure does not cause water to condense.

Why do you think industrial air compressors blow air out every 5 or so minutes? Because they have to clear out the water that was in the air, that condensed, and is now at the bottom of the air tank.

http://en.wikipedia.org/wiki/Pv%3Dnrt
http://www.lsbu.ac.uk/water/phase.html

 

[Train]

Originally posted by: soccerballtux
...

Are you saying water doesn't boil and evaporate more readily at higher altitudes?

higher altitude = lower air pressure, not higher. I'm not sure what point your trying to make. But there sure as hell aint high pressure on top of an airplane wing, I think thats been demonstrated enough.