RE: ISS EVA to jetttison floating point probe

From: Eric Briggs (ebriggs@sympatico.ca)
Date: Thu Nov 03 2005 - 19:31:33 EST

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    This is an interesting event concerning an intriguing effect.  Reference
    James Oberg's 'Starcrossed Orbits' with regards to the Plasma Contact Unit,
    among others.  Given the high voltage of the American PV arrays, without
    devices to ground the ISS to the surrounding plasma astronauts are at risk
    of electrocution, etc.
    
    Cheers
    
    Eric Briggs
    
    -----Original Message-----
    From: Robert Holdsworth [mailto:robbonz1@xtra.co.nz]
    Sent: Friday, November 04, 2005 5:52 AM
    To: Seesat List
    Subject: ISS EVA to jetttison floating point probe
    
    
    It is intended to jettison the floating point probe during the last two
    hours of the EVA on Monday UTC.
    
    Presumably as it is deliberately "launched" it is debris rather than a
    fragment - or will it be an object in its own right?  :-)
    
    We have a very good visible pass during the EVA but the pass appears to be
    too early for the jettison to occur during that it, and presumably the probe
    will be not particularly bright once released.
    
    It is stated as follows:
    
    "McArthur is to jettison the device backwards in relation to the direction
    the station is moving with a smooth motion. He will aim for a velocity of at
    least half a foot per second. He'll try to throw the FPP 30 degrees upward
    and 10 degrees to the left of the back of the station."
    
    Robert
    Wainuiomata
    New Zealand
    41.261S
    147.948E
    
    
    
    
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