From: bondage@frontiernet.net   
      
   dajpe@aol.com wrote:   
   >   
   > For decades now, companies have been using jets of water under   
   > extremely high pressure to cut through various material, including   
   > steel. The water jet can emerge from a tiny 1mm nozzle at speeds of   
   > 3,000 feet per second, using something like 50,000 PSI of pressure.   
   > Could this jet be used in space for propulsion?  It would seem to me   
   > that any mass ejected from a spacecraft at 3 times the speed of sound   
   > would produce quite a bit of thrust.   
      
      Thrust to weight ratio? How massive are those water cutters, for the   
   'thrust' they produce?   
      
      
      
      
   --   
      
      You know what to remove, to reply....   
      
   --- SoupGate-Win32 v1.05   
    * Origin: you cannot sedate... all the things you hate (1:229/2)