Re: aerospace corp decay predictions for Atlas rocket and Goce

From: Marco Langbroek (marco.langbroek@online.nl)
Date: Wed Nov 06 2013 - 14:46:38 UTC

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    Kevin Fetter schreef op 6-11-2013 15:08:
    > Atlas-2A R/B
    >
    > http://www.aerospace.org/cords/reentry-predictions/upcoming-reentries/2000-022b/
    >
    > GOCE Satellite
    >
    > http://www.aerospace.org/cords/reentry-predictions/upcoming-reentries/2009-013a/
    
    
    Note that re-entry estimates for GOCE should be approached very cautiously, as I 
    have pointed out on my blog. The spacecraft has an unusual aerodynamic design 
    that highly reduces drag for as long as the attitude control mechanism keeps 
    working. Once that control mechanism goes and it loses its drag-reducing 
    attitude, the drag parameters will drastically change (more so than with regular 
    satellites), speeding up decay considerably. It will suddenly drop like a brick
    
    So GOCE is a special case.
    
    - Marco
    
    
    -----
    Dr Marco Langbroek  -  SatTrackCam Leiden, the Netherlands.
    e-mail: sattrackcam@langbroek.org
    
    Cospar 4353 (Leiden):   52.15412 N, 4.49081 E (WGS84), +0 m ASL
    Cospar 4354 (De Wilck): 52.11685 N, 4.56016 E (WGS84), -2 m ASL
    Station (b)log: http://sattrackcam.blogspot.com
    Twitter: @Marco_Langbroek
    -----
    
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