From: nospam@127.0.0.1   
      
   On 1/26/2021 3:05 PM, Snidely wrote:   
   > David Spain submitted this gripping article, maybe on Tuesday:   
   > SN8's pressurization system may have relied on gas from the generators   
   > /beginning with propellants from the main tank/ (either charging during   
   > ascent or using residualt).  I'm not sure how much detail was revealed   
   > about this part.  SN9 will use helium (in COPDs, apparently) as an   
   > interim fix; long term fix has not been revealed (and wasn't settled on   
   > at the time of Elon's tweet about SN9+helium).   
      
   Pressurization gas provided from the turbopump preburners was the   
   original design.   
      
   Helium is going to be a little hard to come by on Mars.   
      
   Dave   
      
   --- SoupGate-Win32 v1.05   
    * Origin: you cannot sedate... all the things you hate (1:229/2)