Re: Centaur tumble(2007-27B/31702)

From: Robert Holdsworth via Seesat-l <seesat-l_at_satobs.org>
Date: Tue, 4 Apr 2017 12:04:55 +1200
We have excellent predicted passes but dreadful weather owing to the
remains of a cyclone heading this way from Australia.

Unlikely to be able to take a look for several days!

Robert
Wainuiomata
New Zealand
S 41.244
E 174.946



On 4 April 2017 at 09:08, Chris Jones via Seesat-l <seesat-l_at_satobs.org> wrote:
> On 04/03/17 4:46 PM, Tristan Cools via Seesat-l wrote:
>
>> Has someone recently oberved 2007-27B/31702, an Atlas second stage
>> Centaur rocket ?  At the time of launch it under-performed placing a
>> NOSS duo in a lower than intended orbit.  I presume there must be
>> some fuel left over.
>
>
> Given the Centaur's propellants (LH2 and LOX), I would be surprised if
> either of those had lasted 10 years, even without any attempt to
> passivate the the stage.  The RCS uses a hydrazine monopropellant, which
> could probably survive if it weren't dumped (the Wikipedia article says
> 340 pounds are carried, split between two bladder tanks).
>
> Since I expect they would have attempted to dump the propellants, if
> that were successful, there shouldn't be propellants left over.
>
>
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Received on Mon Apr 03 2017 - 19:06:01 UTC

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