Some Statistics for Spirit & Oppy, As the journey continues on Mars |
Some Statistics for Spirit & Oppy, As the journey continues on Mars |
Jan 4 2007, 12:36 AM
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Senior Member Group: Members Posts: 2922 Joined: 14-February 06 From: Very close to the Pyrénées Mountains (France) Member No.: 682 |
Some statistics as on Dec 31st 2006
Total Pictures : 170.026 Total Sols : 2110 (11.7 times more than scheduled) Pics/Sol/Rover : 81 Total distance : 16.684 meters (13.9 times more than scheduled) meter/Sol/Rover : 7.9 Cost/sol (Assuming 800 millions USD) : 379.147 USD Post/UMSF’ers/Sol/Rover : -------------------- |
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Nov 24 2009, 04:44 PM
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Martian Photographer Group: Members Posts: 353 Joined: 3-March 05 Member No.: 183 |
Keep in mind that the whole 'Bambi circling its dead mother' imagery was always more poetic than predictive. The code said to return to the lander; the result of certain keep-outs was that circling would occur on perfect terrain. But where Sojourner was on sol 83, Ender was on the most likely first direction. That is significant because Ender & Wedge almost ended Sojourner's travels much earlier, with a rover driver threatening to turn off all safety checks and command enough wheel turns to grind the rock to dust if that's what it took to move again. That terrain, the best entrance to the Rock Garden, was nearly non-navigable. An unattended rover with fault protections (tilt, etc) on had zero chance of passage. (My guess in '97 was right against Ender--wouldn't have won the pool, but close.)
Note that Sojourner got stuck somewhere around 6x nominal mission. The response to both Opportunity and Spirit being stuck has been much more cautious, despite being even further "past warranty". I think the real explanation is a somewhat different culture (despite a similar cast & crew); equally, though, it is clear that the MERs each had more future potential from continued roving, compared to Sojourner with the Rock Garden abandoned. Also, I have 7 m (sol) and 104 m (mission--before the last couple m) for Sojourner. |
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