Re: MIR deorbit simulation (a bit off topic) ...

From: bcitron@space.com
Date: Mon Feb 26 2001 - 19:20:20 PST

  • Next message: bcitron@space.com: "Re: MIR deorbit simulation (a bit off topic) ..."

    Hi Dean,
    
    The latest deorbit date is March 16th plus or minus two days.  You can find the latest deorbit date info from Moscow and NASA on our Home Page at www.mirreentry.com.  I enjoyed your animation but it shows the spash area near Fiji and the actual center of the debris footprint will be at 140W and 47S, 2,000 miles further down range.
    
    Bob Citron 
    
    
    On Mon, 26 February 2001, Dean Schrage wrote:
    
    > 
    > Hi all,
    > 
    > I have been working orbit mechanics for a communications experiment for 
    > about 2 years now.  With all the interest in MIR and reentry, I got to 
    > wondering if it was possible to model the reentry process, complete with 
    > retro burn and splat.  Well, I took my existing orbital code and added the 
    > necessary components and it appears to work.  I can now simulate a 
    > ballistic reentry and the motion post-impact.  I have posted a page and 
    > some animations which can be found at the following URL:
    > 
    > http://www.d3experiment.homepage.com/MIRDeorbit
    > 
    > I am interested in obtaining more information on the expected day of the 
    > deorbit.  If anyone has the current plans perhaps you could follow-post 
    > them.  I have done some searching but couldn't find anything more than CNN 
    > updates.  What I would like to do is update the initiation vector as time 
    > goes on and then reissue the simulation to get new ballistic trajectories.
    > 
    > One item as indicated in the above link, it is not very easy to get a 
    > controlled deorbit, i.e. too much retro and it falls out fast, too little 
    > and you miss the hoop.  Of course, I am a beginner at deorbiting LEO sats 
    > so if anyone else has applied experience I would be happy to get a few 
    > pointers.  All feedback is welcome.
    > Best Regards
    > 
    > 
    > Dean Schrage
    > 
    > 
    > ********************************************
    > 
    >              Dean S. Schrage
    > 
    >            Zin Technologies Inc.
    > NASA Glenn Research Center Group
    >       3000 Aerospace Parkway
    >         Brook Park, OH 44142
    > 
    > www.D3Experiment.homepage.com
    > 
    >       dean.schrage@grc.nasa.gov
    >               (216) 977-0373
    >               (216) 977-0350 FAX
    > 
    > 
    > ********************************************
    > 
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