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Unread 20-02-2010, 20:59
Ian Curtis Ian Curtis is offline
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Re: Kinda stupid question...

Quote:
Originally Posted by Taylor View Post
I'm surprised nobody has brought up that Hydrogen is half the weight of Helium, and would be a much more efficient weight-loser.
I also noticed somebody brought up the weight of the balloons that would hold the He/H. If you cover them in tape first, they won't tear when you swiss-cheesify them.
Hydrogen is only half the weight of Helium, but since buoyancy is proportional to the difference in density, the gain in buoyancy is only ~9%. Not to mention if you plan on filling your robot with hydrogen, you better be darn sure your robot won't short anywhere -- that would be quite the show.
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Last edited by Ian Curtis : 20-02-2010 at 23:45.
 


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