Re: Rocket fuel dump photographed from Sweden

From: Scott Tilley via Seesat-l <seesat-l_at_satobs.org>
Date: Sun, 13 Nov 2016 13:48:04 -0800
Hi Chris

Here's a potpourri of upper stage events from the recent geo insertion 
of the latest GSSAP pair.

https://www.youtube.com/watch?v=QsKqsv69yJ8

It presumably shows insertion burn, deployment of both payloads, CCAM 
and then fuel dump.  Which should give you a sense of what all these 
events generally look like.

Regards,

Scott Tilley


On 11/13/2016 1:37 PM, Chris Jones via Seesat-l wrote:
> On 11/11/16 7:17 PM, Jonathan McDowell via Seesat-l wrote:
>> This is obviously the Centaur AV-062 rocket stage venting after the
>> Worldview-4 launch
>
> I have a question about this.  (I'm not (quite) disputing that this is
> what it is.)
>
> Everything that I read that referenced the Centaur post-Cubesat deploy
> said that the Centaur would burn to depletion and end up in solar orbit.
> Certainly Space-Track is currently only showing 8 objects from this
> launch, with the A object identified as Worldview 4 and the other 7 with
> object type TBA and no assigned name other than Object <letter>.  If we
> assume they are the Cubesats, then the Centaur rocket body is not 
> cataloged.
>
> My question is this:  Is there a meaningful difference between the
> appearance of a fuel dump and a rocket burn?  To me, a propellant dump
> is a non-combustion event while a burn is (sort of obviously) a
> combustion event.  This picture looks like what I've always associated
> with the appearance of a propellant dump, but I can't recall if I've
> seen a picture of an upper stage firing, so I don't know if they look
> the same.
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Received on Sun Nov 13 2016 - 15:48:34 UTC

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