From: alain245@videotron.ca   
      
   On Jul/25/2020 at 19:37, JF Mezei wrote :   
   > On 2020-07-25 14:49, Alain Fournier wrote:   
   >> Not nearly as important as recovering the first stage, but still   
   >> recovering the nose cone reduces yet again launch costs for SpaceX.   
   >> Their fairing recovery ships caught both halves of the nose cone on   
   >> their launch Monday.   
   >   
   >   
   > How is this done?   
   >   
   > is there logic on the fairing to control parachutes to steeer to the   
   > location of ship with the net?   
   >   
   > Or does the ship with the net have high speed capability to position   
   > itself under the arriving fairing?   
      
   My understanding is that it is the latter, the ships are high speed and   
   go to where the fairing will fall.   
      
   > In the first case, I assume the awaiting ships are pre-positioned to   
   > area where the fairings are expected to drop based on wind etc.   
   >   
   >  From orbital mechanics point of view, was this a question of SpaceX   
   > learning how long it takes for the fairings to tumble in space before   
   > they "hit" atmosphere and start to fall? Or it is a calculated thing?   
      
      
   Alain Fournier   
      
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