From: filip.larsen@nospam.dk   
      
   Reza wrote   
      
   > Assume there is no plane change.  Simply it is required to put a   
   > satellite from its LEO orbit with inclination angle of zero into the   
   > final GEO orbit using a bielliptic transfer.  The satellite must go   
   > through the following orbits:   
   >   
   > Initial circular LEO orbit --> first elliptic transfer orbit --> first   
   > circular transfer orbit --> second elliptic transfer orbit --> the   
   > final circular orbit.   
   >   
   > It seems that the satellite requires four burns rather than three.   
   > Could someone please tell me whether the above order is right? Why we   
   > need three burns rather than four (as given in other postings)? Where   
   > the burns occur?   
      
   In general, if you have a sequence of n matched orbits you need n-1   
   maneuvers to go from first to last orbit in the sequence. In your case   
   you list a sequence of 5 orbits and you therefore need 4 maneuvers in   
   total. I believe that with "bi-elliptic transfer" one normally means the   
   sequence:   
      
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