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GOCE
Vultur
post Apr 9 2009, 03:01 AM
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And now the gravity instrument is on, too.

It looks like this will be doing very valuable science, though maybe not as immediately exciting as planetary exploration...
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Rakhir
post May 27 2009, 08:43 AM
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GOCE achieves drag-free perfection

I really like this amazing satellite smile.gif
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gwiz
post May 27 2009, 09:33 AM
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Not quite the "first" they claim, though. Beaten by three decades:

http://oai.dtic.mil/oai/oai?verb=getRecord...ifier=AD0766456
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dilo
post May 27 2009, 03:08 PM
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Thanks for the info, gwiz! For Triad satellite, it seems they used traditional thrusters for compensatoin of non-gravitational forces, I wonder if is really effective like the continuous ion thruster...
Anyway, any link to the full article?
PS: I'm really intrigued by the final phrase "A significant bias force is found acting in the local vertical direction." Pioneer effect again??? rolleyes.gif

EDIT: I found this article telling that Triad residual acceleration is within 1e-11g... any info on the actual GOCE residual acceleration? (they only claim is 10-fold better than requested).


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gwiz
post May 27 2009, 03:36 PM
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QUOTE (dilo @ May 27 2009, 04:08 PM) *
Anyway, any link to the full article?

Can't find a free copy, but the link you found is probably comparable.
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kto
post Jun 25 2009, 10:05 AM
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i've heard that lowering the orbit did not go as well as planned; does anybody know if this is because of the unexpected solar minimum, and what, if any, are the resulting delays?
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ngunn
post Oct 1 2009, 09:13 PM
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Positive news:

http://www.spacedaily.com/reports/GOCE_Del...p_Ever_999.html

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stevesliva
post Oct 2 2009, 06:01 AM
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ESA's got the bigger visual -- a nice reminder that I have a supervolcano in my back yard.
http://www.esa.int/images/gradient_picture.jpg
Makes me wonder what the big sharp peaks in central africa are.

From their version:
http://www.esa.int/esaCP/SEMNBNKIWZF_index_0.html

(Actually, I don't believe science daily did much other than add their own attribution.)
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stevesliva
post Jun 29 2010, 10:10 PM
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New BBC article.
http://news.bbc.co.uk/2/hi/science/nature/8767763.stm

Seems to be a differently balanced use of the same colors. Odd.

And of course, the same releases available at the ESA page here:
http://www.esa.int/SPECIALS/GOCE/index.html
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stevesliva
post Sep 3 2010, 08:55 PM
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Interesting mission-extending software patching going on with GOCE:
http://spaceflightnow.com/news/n1008/29goce/

Apparently separate and different failures in discrete components of each redundant computer system is driving them to create software patches that use the functioning components of each computer to restore operations. Neat.
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