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OPAG meeting November 2008
Guest_PhilCo126_*
post Nov 14 2008, 11:52 AM
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http://www.lpi.usra.edu/opag/nov2008Meetin...tions/TSSM3.pdf
Page cannot be found sad.gif
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jamescanvin
post Nov 14 2008, 11:58 AM
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http://www.lpi.usra.edu/opag/nov2008Meetin...tions/TSSM3.pdf


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infocat13
post Nov 15 2008, 04:45 AM
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QUOTE (jamescanvin @ Nov 14 2008, 06:58 AM) *





The URL seems to work for me unsure.gif indeed the front page of the PDF document shows our Intrepid Saturn explorer with two solar arreys!
I think I will go and look at the March OPAG PDF documents to see how this compares. Are we saving on RTG'S( I think not)
and what would be the trade here? would the wieght of the solar array and its launch costs make up for any savings on supplamenting the RTG's?
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mchan
post Nov 15 2008, 06:53 AM
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The two arrays are part of the SEP stage.
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infocat13
post Nov 15 2008, 07:27 AM
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QUOTE (mchan @ Nov 15 2008, 02:53 AM) *
The two arrays are part of the SEP stage.



Ahhhhhhh!
inner solar system orbit!
the Eveej trajectory!
got it
thanks
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SFJCody
post Nov 18 2008, 05:40 PM
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I'm no chemist, so the following is probably completely wrong, but it seems to me that when this warm plutonium powered machine from our silicate world drops into Kraken Mare it might quickly be wreathed in ethane steam. This might make post splashdown imaging problematic.
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ngunn
post Nov 18 2008, 05:49 PM
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I understood the lake boat would be battery powered and short-lived, like Huygens.
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SFJCody
post Nov 18 2008, 05:51 PM
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QUOTE (ngunn @ Nov 18 2008, 05:49 PM) *
I understood the lake boat would be battery powered and short-lived, like Huygens.


Ah, OK. I hope it's well insulated!
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centsworth_II
post Nov 18 2008, 06:03 PM
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QUOTE (SFJCody @ Nov 18 2008, 12:40 PM) *
This might make post splashdown imaging problematic.

A wet landing will certainly pose lens contamination problems. They probably won't even know what types of contamination to prepare for. Even with a dry landing, the thick atmosphere can carry any number of contaminants onto a lens.
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rlorenz
post Nov 18 2008, 08:26 PM
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QUOTE (centsworth_II @ Nov 18 2008, 01:03 PM) *
A wet landing will certainly pose lens contamination problems. They probably won't even know what types of contamination to prepare for. Even with a dry landing, the thick atmosphere can carry any number of contaminants onto a lens.


Huygens didnt seem to have any issues....

But in any case, imaging isnt a major priority for the TSSM lake lander - it is north polar winter
when it descends, so twilight imaging I guess. For the spectacular vistas, see the montgolfiere
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Mariner9
post Nov 19 2008, 01:27 AM
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QUOTE (centsworth_II @ Nov 18 2008, 10:03 AM) *
A wet landing will certainly pose lens contamination problems.



Fortunately I understand the engineers at ESA have spent a lot of time and research on a solution to this.


It's called a lenscap. rolleyes.gif



All kidding aside, I would imagine that any contaminents would only spash up on the initial contact with the ocean. After things settle down, it is a comparatively simple matter to jetison the lenscap and be able to take those fabulous photos of ... uh.... well, uh ...

That brings up the next problem.... what exactly would you take pictures of? You think the surface of the ocean looks dull on Earth, imagine a place with lower light levels and virtually no wind gusts.
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nprev
post Nov 19 2008, 02:59 AM
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At the risk of sounding heretical, I would almost trade an imager for a basic underliquid sonar mapping capability...but upon further reflection, nah. We don't know enough about the liquid's composition to design such an instrument (though a depth sounder would be a must-have; the observed transmission properties would set some additional constraints on the material's composition, and I'm assuming that they'll try some sort of chemical analysis).

As for imagery...I vote IR!


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Juramike
post Nov 19 2008, 03:50 AM
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QUOTE (nprev @ Nov 18 2008, 09:59 PM) *
sonar mapping capability...but upon further reflection...


<ouch!> laugh.gif


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Some higher resolution images available at my photostream: http://www.flickr.com/photos/31678681@N07/
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nprev
post Nov 19 2008, 04:12 AM
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tongue.gif ...how'd I know that Mike would catch that... biggrin.gif


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infocat13
post Nov 20 2008, 07:52 AM
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so we do an experiment?
NASA JPL ESA build a engineering flight article and.........................................
emerse it in a liquid ethane/organic carbin mixture make and run experiments with different theorys on turbity
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