XPost: sci.electronics.design, sci.physics, sci.space.policy   
   From: jfindley@cinci.nospam.rr.com   
      
   In article <2KnWz.136226$EP.47973@fx23.am4>, spamjunk@blueyonder.co.uk   
   says...   
   > > Fun is not a practical transportation device.   It's awfully hard to get   
   > > a glider to fly arbitrary routes thousands of miles long.  It's trivial   
   > > with a jet airliner.   
   >   
   > Sure, but what does that have to do with the original point,   
   > viz "Remove the engines and airplanes don't go up."   
   > The can, and do, go up - occasionally higher than commercial   
   > airliners other than Concorde.   
   >   
      
   Look at the *original* topic.  I.e. the subject line:   
      
       Ion drive for aircraft imminent.   
      
   In other words, an ion *engine*.  Somewhere along the way the original   
   topic got distorted and has become a love/hate glider fest.   
      
   Jeff   
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