From: henry@spsystems.net   
      
   In article <20040124084602.12501.00005765@mb-m04.aol.com>,   
   Azt28  wrote:   
   >>>And are hypersonics a good idea for anything at all?   
   >>For high-speed cruise within the atmosphere -- assuming you have some   
   >>urgent reason to want to do that -- they look promising...   
   >   
   >I think the sonic boom forbids any hypersonics aircraft service.   
      
   Not if it's military.  And there are some theoretical possibilities for   
   low-boom or no-boom flight, although whether they will work at hypersonic   
   speeds is unclear.   
   --   
   MOST launched 30 June; science observations running     |   Henry Spencer   
   since Oct; first surprises seen; papers pending.        | henry@spsystems.net   
      
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