Rat Status, RAT status |
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Rat Status, RAT status |
 Jun 16 2005, 01:11 PM
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Member  Group: Members Posts: 252 Joined: 27-April 05 Member No.: 365  |
Over at Astrobiology magazine's web site they have the 4th installment of Joy Crisps' presentation and there are some nice nuggets of information in them. She says they believe that Spirit's RAT is about shot, having done 15 grindings, mostly in hard basaltic rocks, while Opportunity's RAT has done 22 grindings but appears to be in good shape still.
http://www.astrobio.net/news/modules.php?o...order=0&thold=0 |
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Jun 17 2005, 06:09 PM
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Newbie Group: Members Posts: 2 Joined: 9-April 05 Member No.: 230 |
[quote=Burmese,Jun 16 2005, 06:11 AM]
*** Spirit's RAT is about shot, *** Has there been a decision to discontinue the use of the Spirit RAT? Recent rocks that looked like good science have been brushed but not drilled. Or do they happen to belong to rock types that look about the same externally as they would internally, based on previous pre- and post-RAT results? What happens if you use a worn-out RAT? Does it just fail to drill effectively, or is there a risk of damage to the arm that suggests it is better to not to try? Steve Pendleton |
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Jun 17 2005, 06:15 PM
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#3
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 Member Group: Members Posts: 578 Joined: 5-November 04 From: Denmark Member No.: 107 |
QUOTE (anorthosite @ Jun 17 2005, 06:09 PM) What happens if you use a worn-out RAT? Does it just fail to drill effectively, or is there a risk of damage to the arm that suggests it is better to not to try? Steve Pendleton  I think the last time they used it they could feel some jittering that perhaps was caused by a worn down RAT. If it jitter too much it could maybe damage the robotic arm 
-------------------- "I want to make as many people as possible feel like they are part of this adventure. We are going to give everybody a sense of what exploring the surface of another world is really like"
- Steven Squyres |
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