Re: B747 technical questions

Date:         01 Aug 97 04:04:17 
From: (Gerard Foley)
Organization: The Greater Columbus FreeNet
References:   1 2 3 4 5
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Gary Welch ( wrote:

: Nitrogen is somewhat lighter than oxygen.  The difference may seem trivial
: but I've read that the air in the tires of a 747 weighs in the 100s of
: pounds (I've heard of Helium being used in some aircraft).

   I'm surprised if ordinary rubber tires will hold helium, which diffuses
pretty easily.  Aren't the shells of blimps treated to prevent this?