Question about planes

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Question about planes

Post  mariposa12 on Thu Oct 29, 2009 3:07 pm

why are airplanes pressurized? They carry heavy loads of items and things and how can they stay up? Its amazing how humans create this.
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Re: Question about planes

Post  firey on Thu Oct 29, 2009 4:25 pm

Uhm, okay well I always thought people knew stuff like this...


1. The reason they are pressurized it because air closer to the ground is far different than the air where a plane would fly. They need to pressurize it so that:

A) The plane is not crushed by the air, and so that B) the humans in the aircraft can still breathe properly.

2. The uplift of air on the plane based on its wings allows the plane to stay up (Same concept as a boat with a heavy load in water)
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Re: Question about planes

Post  Eclipse on Thu Nov 05, 2009 2:00 pm

Well, in an effort to make this philosophical, are humans meant to fly? Does our mechanical prowess give us this right, and should we use it? Today, a disease can spread from continent to continent in mere hours when such a thing would be unheard of in the past. Has flying really helped or hurt us as a race?
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