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Old 12th Feb 2023, 06:32
  #294 (permalink)  
lucille
 
Join Date: Jun 2001
Location: sierra village
Posts: 675
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Can some boffin here calculate the volume of a H2 filled ballon with the buoyancy to support a 1500kg payload at 60,000ft.

It has to be some stupendous amount as would the surface are of fabric needed to co rain it.

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