Re: Orbital express orbit

From: Leo Barhorst (leo.barhorst@tele2.nl)
Date: Mon Mar 12 2007 - 17:20:10 EDT

  • Next message: David Anderman: "Re: Orbital express orbit"

    Perhaps this is outdated? It is from Aug 24, 2006.
    See the 3rd paragraph.
    Separation later in the 3 month mission.
    
    I watched the launch on the internet.
    In a real time simulation they showed the relase of Astro with NextSat still 
    on top of it.
    If I remember well the commentator also said that first test were to 
    performed with the
    sats still attteched, including the manipulator arm. Later on they would 
    separate and
    dock again. No details on the timeline.
    
    On the following URL I found conformation for this.
    http://www.aiaa.org/aerospace/images/articleimages/pdf/AA_Feb07_WIL.pdf.
    
    The DARPA mission is expected to last three
    
    or four months, starting slowly with a few weeks
    
    of systems checks and some fluid transfers
    
    while the two satellites are still mated in their
    
    launch configuration.
    
    "Then we will use the arm, starting slow and
    
    working up to more complicated operations, to
    
    detach NextSat from ASTRO and eject the separation
    
    ring that will help us during the launch.
    
    Then we reattach, do another set of fluid transfers,
    
    then some battery and computer component
    
    replacements (the computer will be on ASTRO,
    
    then taken off, then put back on ASTRO,
    
    but never switched to NextSat)," Geery says.
    
    "Then we start unmated operations, again
    
    starting slow, backing away to 10 m, then remating,
    
    then gradually getting farther away, ultimately
    
    to a baseline of 7 km. But we have designed
    
    for cases up to 200 km, with autonomous
    
    guidance back to dock."
    
    Greetings and clear skies
    Leo Barhorst - Medemblik - The Netherlands
    Homepage: www.satlist.nl
    
    
    
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