From: jfindley@cinci.nospam.rr.com   
      
   In article <3sfWH.65410$cJ6.13953@fx34.iad>,   
   jfmezei.spamnot@vaxination.ca says...   
   >   
   > On 2021-02-13 19:03, Alain Fournier wrote:   
   >   
   > > For the Columbia-ISS problem, I think that the orbital plane difference   
   > > is much more problematic than the difference in orbital speed at apogee.   
   > > Even if the two were at exactly the same speed, if they aren't going in   
   > > the same direction it is of no use.   
   >   
   >   
   > Was curious on how different the direction is if you phase  Columbia's   
   > orbit to cross ISS's at a point where they both cross equator (or other   
   > point where their direction of travel might be close enough, then fire   
   > all you got left on COlumbia to reduce the gap in direction/speed).   
   >   
   > All of what I had seen in the past was about the fuel cost of matching   
   > orbit so you could dock.   
   >   
   > I was wondering whether a one shot, "spend all the fuel you got" attempt   
   > might give you a few seconds where you pass just below ISS where the   
   > speed difference at that moment wouldn't be so great (after which   
   > Columbia would distance itself at increasing rate of change as it falls   
   > back down and veers to one side)   
      
   The math just does't work.   
      
   Jeff   
      
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