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Weather Balloons w/ Fuel Cell

Oh the Balloonity!
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Yes yes, we know hydrogen is flammable and stuff. However I think there'd be nothing wrong with a weather balloon that used the hydrogen keeping it aloft to power fuel cell and give it a controlled descent.

After all, helium prices are expected to rise.

Madai, Apr 29 2013

my original blather......... Your_20own_20Vulcan_20bomber
[not_morrison_rm, May 01 2013]

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       [+] Helium is an unreplaceable commodity on Earth so I don't see why we're using it up in the first place.   

       Anyways brilliant idea. I think Honda's FC tech has fuel cell weight down to 1lb/kW, so added to an EM (also'ish at 1hp/lb) the weight is equivalent to an IC engine of the same power, at 2-3x's the efficiency; plus better weight distribution.
FlyingToaster, Apr 29 2013
  

       Er, I have bored everyone already with hydrogen balloon/fuel cell, but I was blathering on about Biefeld–Brown drive, as it's the lightest.
not_morrison_rm, Apr 29 2013
  
      
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