From: jsb@at.hal-pc-dot.org.retro.com   
      
   "ed kyle"  wrote in message   
   >   
   > The Glushko/Energomash RD-171 is more powerful than F-1   
   > was.  RD-171 produces 740 metric tons of sea-level, and   
   > 806 tons of vacuum, thrust.  F-1 produced 789 tons of   
   > vacuum thrust.   
   >   
   >  - Ed Kyle   
      
   The RD-171 *looks* like four engines bolted together. The engine has four   
   separate thrust chambers and four nozzles, I believe. Not 100% certain,   
   though.   
      
   Jon   
      
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