From: henry@spsystems.net   
      
   In article <88d21cfd.0401201857.60275b60@posting.google.com>,   
   ed kyle  wrote:   
   >> The RD-171 *looks* like four engines bolted together...   
   >   
   >Four thrust chambers, but all are driven by a single   
   >monster turbopump.  That makes it a single engine   
   >according to most sources.   
      
   Not everyone agrees with that definition, however, and it gets you into   
   trouble when you try to apply it everywhere.  (How many engines in the   
   classic Atlas?  Hint:  the pump configuration changed several times.)   
   --   
   MOST launched 30 June; science observations running     |   Henry Spencer   
   since Oct; first surprises seen; papers pending.        | henry@spsystems.net   
      
   --- SoupGate-Win32 v1.05   
    * Origin: you cannot sedate... all the things you hate (1:229/2)