XPost: sci.space.shuttle   
      
   If I understand correctly, the real issue is that it's very difficult to   
   find ways to dump all that excess energy more slowly.  Aerodynamic braking   
   is just about the only technique available, and if it is done more   
   gradually (i.e., at a shallower angle), the vehicle tends to just bounce   
   back out into space in some semi-random trajectory.   
      
   Have there been any attempts to make a more gradual, controlled re-entry   
   that heats less and doesn't bounce?   
      
   /kenw   
      
   Ken Wallewein   
   K&M Systems Integration   
   Phone (403)274-7848   
   Fax   (403)275-4535   
   kenw@kmsi.net   
   www.kmsi.net   
      
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