From: schillin@spock.usc.edu   
      
   Sander Vesik  wrote:   
   > Are there any known issues with running multiple HET   
   > (Hall Effect Thruster) in parallel to get increased   
   > performance? Is it being already used somewhere?   
      
      
   I've seen it done, and it seems to work just fine.  Ground tests   
   only, so far.  And I happen to have the paper on my desk.   
      
   "The Air Force Clustered Hall Thruster Program", W.A. Hargus Jr and   
   G. Reed, AIAA-2002-3678, 38th AIAA Joint Propulsion Conference, 2002   
      
      
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