home bbs files messages ]

Forums before death by AOL, social media and spammers... "We can't have nice things"

   rec.arts.sf.science      Real and speculative aspects of SF scien      45,986 messages   

[   << oldest   |   < older   |   list   |   newer >   |   newest >>   ]

   Message 44,923 of 45,986   
   els.dallas@gmail.com to els.d...@gmail.com   
   Re: Coilgun projectile velocities in spa   
   03 Apr 17 15:52:45   
   
   [continued from previous message]   
      
   It takes between 6.09 MJ and 6.8 MJ to vaporize 1 kg of steel. So using Luke's   
   2.5% waste heat number and the higher 6.8 MJ number, then attempting to dump   
   2.72 GJ into the 10 kg projectile will result in it being vaporized. More   
   depressing is that at    
   the quoted inefficiency, attempting to dump over 99 MJ into the 10 kg   
   projectile will result in it melting.   
      
   --- SoupGate-Win32 v1.05   
    * Origin: you cannot sedate... all the things you hate (1:229/2)   

[   << oldest   |   < older   |   list   |   newer >   |   newest >>   ]


(c) 1994,  bbs@darkrealms.ca