OPAG meeting November 2008 |
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OPAG meeting November 2008 |
| Guest_PhilCo126_* |
 Nov 14 2008, 11:52 AM
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#16
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Nov 14 2008, 11:58 AM
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#17
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 Senior Member  Group: Moderator Posts: 2127 Joined: 9-February 04 From: UK Member No.: 16 |
-------------------- My MER & MSL Imagery site - Martian Vistas ---- Twitter Feed (including sol by sol updates on Opportunity's activity)
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Nov 15 2008, 04:45 AM
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#18
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Junior Member Group: Members Posts: 90 Joined: 27-August 05 Member No.: 479 |
QUOTE (jamescanvin @ Nov 14 2008, 06:58 AM)  The URL seems to work for me  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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Nov 15 2008, 06:53 AM
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#19
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Member Group: Members Posts: 592 Joined: 26-August 05 Member No.: 476 |
The two arrays are part of the SEP stage.
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Nov 15 2008, 07:27 AM
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#20
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Junior Member Group: Members Posts: 90 Joined: 27-August 05 Member No.: 479 |
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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Nov 18 2008, 05:40 PM
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#21
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 Member Group: Members Posts: 745 Joined: 8-February 04 Member No.: 12 |
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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Nov 18 2008, 05:49 PM
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#22
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 Senior Member Group: Members Posts: 2932 Joined: 4-November 05 From: North Wales Member No.: 542 |
I understood the lake boat would be battery powered and short-lived, like Huygens.
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Nov 18 2008, 05:51 PM
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#23
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Member Group: Members Posts: 745 Joined: 8-February 04 Member No.: 12 |
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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Nov 18 2008, 06:03 PM
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#24
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 Senior Member Group: Members Posts: 1968 Joined: 28-December 04 Member No.: 132 |
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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Nov 18 2008, 08:26 PM
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#25
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 Member Group: Members Posts: 394 Joined: 23-February 07 From: Occasionally in Columbia, MD Member No.: 1764 |
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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Nov 19 2008, 01:27 AM
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#26
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Member Group: Members Posts: 216 Joined: 13-October 05 Member No.: 528 |
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.  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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Nov 19 2008, 02:59 AM
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#27
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 Senior Member Group: Moderator Posts: 6480 Joined: 8-December 05 From: Los Angeles Member No.: 602 |
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! -------------------- A few will take this knowledge and use this power of a dream realized as a force for change, an impetus for further discovery to make less ancient dreams real.
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Nov 19 2008, 03:50 AM
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#28
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 Senior Member Group: Moderator Posts: 2606 Joined: 10-November 06 From: Pasadena, CA Member No.: 1345 |
QUOTE (nprev @ Nov 18 2008, 09:59 PM) sonar mapping capability...but upon further reflection... <ouch!> 
-------------------- Some higher resolution images available at my photostream: http://www.flickr.com/photos/31678681@N07/
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Nov 19 2008, 04:12 AM
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#29
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Senior Member Group: Moderator Posts: 6480 Joined: 8-December 05 From: Los Angeles Member No.: 602 |
 ...how'd I know that Mike would catch that... 
-------------------- A few will take this knowledge and use this power of a dream realized as a force for change, an impetus for further discovery to make less ancient dreams real.
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Nov 20 2008, 07:52 AM
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#30
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Junior Member Group: Members Posts: 90 Joined: 27-August 05 Member No.: 479 |
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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