Post Solar Conjunction/Santorini Study Drive, The second leg in our Journey to Endeavor Crater |
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Post Solar Conjunction/Santorini Study Drive, The second leg in our Journey to Endeavor Crater |
 Mar 19 2009, 03:22 AM
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#511
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 Member  Group: Admin Posts: 976 Joined: 29-September 06 From: Pasadena, CA - USA Member No.: 1200  |
QUOTE (centsworth_II @ Mar 18 2009, 07:01 PM)  "Due to an unanticipated interaction.... Opportunity did not drive backwards toward its goal. Instead, the rover drove forward some distance..." Yikes! If that had happened during the circumnavigation of Victoria crater, while backing away from a precipice!  When we were driving around VC we had a triple layer of safety including monitoring of the tilt and position of the wheels. The limits we were using would have stopped the rover right away in case of unexpected change in rover attitude. When driving straight towards the crater rim the commanded motion was always less than the distance to the rim, and we were defining areas that were considered by the flight software as impenetrable. These limits are implemented even on the plains but are quite a bit looser to allow for climbing small ripples. Moreover, the areas that are really rover obstacles or that can potentially be a danger to the rover are much far apart. Palo -------------------- Disclaimer: all opinions, ideas and information included here are my own,and should not be intended to represent opinion or policy of my employer.
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Mar 23 2009, 03:15 AM
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#512
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 Senior Member Group: Members Posts: 1887 Joined: 20-November 04 From: Iowa Member No.: 110 |
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| Guest_Oersted_* |
Mar 23 2009, 02:12 PM
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#513
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Guests |
Surely the onboard software would have cut the drive short, had it been heading for a precipice. Still, this one must have caused some red cheeks at the JPL... And, yes, that drive direction was pretty difficult to explain.
 If it was due to human error it's the first blunder I recall seeing in five years of Rover operations, so that is a good performance by any standard.
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Mar 23 2009, 05:11 PM
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#514
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Member Group: Admin Posts: 976 Joined: 29-September 06 From: Pasadena, CA - USA Member No.: 1200 |
QUOTE (Oersted @ Mar 23 2009, 06:12 AM) Surely the onboard software would have cut the drive short, had it been heading for a precipice. Still, this one must have caused some red cheeks at the JPL... And, yes, that drive direction was pretty difficult to explain. If it was due to human error it's the first blunder I recall seeing in five years of Rover operations, so that is a good performance by any standard.What I meant to say is that we try to have several layers of safety checks which are set tighter when the situation is more precarious. I won't comment on the  cheeks.Paolo -------------------- Disclaimer: all opinions, ideas and information included here are my own,and should not be intended to represent opinion or policy of my employer.
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Mar 24 2009, 10:45 PM
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#515
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 Senior Member Group: Moderator Posts: 2262 Joined: 9-February 04 From: Melbourne - Oz Member No.: 16 |
The raws for the first Resolution pan (another much larger and closer pan is currently being taken
) are all down. Here is my version: James -------------------- |
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Mar 24 2009, 11:12 PM
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#516
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 Senior Member Group: Moderator Posts: 3431 Joined: 11-August 04 From: USA Member No.: 98 |
Nice job! I had a go at that pan and it seemed unusually difficult to get a good result, due I guess to the difference in contrast between the various JPG images. I'm particularly impressed that you managed to keep the horizon detail without losing the foreground detail.
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Mar 24 2009, 11:18 PM
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#517
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 Senior Member Group: Admin Posts: 4763 Joined: 15-March 05 From: Glendale, AZ Member No.: 197 |
Wow. The dunes are disappearing
-------------------- If Occam had heard my theory, things would be very different now.
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Mar 24 2009, 11:55 PM
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#518
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Member Group: Members Posts: 384 Joined: 4-January 07 Member No.: 1555 |
QUOTE (alan @ Mar 22 2009, 08:15 PM) Are the blueberries back? .... Yes indeed, and they don't appear to be particularly dispersed, do they? More randomly distributed, I'd guess. -- HDP Don |
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Mar 26 2009, 01:41 PM
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#519
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 Senior Member Group: Members Posts: 1619 Joined: 12-February 06 From: Bergerac - FR Member No.: 678 |
Hi,
The view of Resolution Crater in color, only the horizon view.  And the last RAT, colorized with color pic taken the same sol (1833):  http://www.astrosurf.com/merimages/opportu...-2009.html#last James, very good pic, especially with the tracks of the rover on the sandy dunes .
-------------------- |
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Mar 28 2009, 02:30 PM
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#520
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Member Group: Members Posts: 530 Joined: 21-March 06 From: Canada Member No.: 721 |
I found this comment from Scott's blog eerily prescient:
"Opportunity is driving today. Only a few sols out of their crater and they're going to break our one-sol drive-distance record: 48m tomorrow, or so. And they'll better that record on future sols. Before long, they'll set a record we have no hope of breaking." Was this just a comment on some planned drives to Endurance, or did he know even this early about long term plans to hightail it across the plains to Victoria? I wonder...  Speaking of driving.... Soon? |
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Mar 28 2009, 02:42 PM
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#521
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Founder Group: Chairman Posts: 14432 Joined: 8-February 04 Member No.: 1 |
Just look at Meridiani and Gusev. There's no way that Spirit was ever going to match one hard days drive across to Endurance.
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Mar 28 2009, 03:45 PM
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#522
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Senior Member Group: Moderator Posts: 4279 Joined: 19-April 05 From: .br at .es Member No.: 253 |
> Speaking of driving.... Soon?
Nothing on the weekend's plan for this side of the planet. |
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Mar 29 2009, 02:38 AM
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#523
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Member Group: Admin Posts: 976 Joined: 29-September 06 From: Pasadena, CA - USA Member No.: 1200 |
QUOTE (Tesheiner @ Mar 28 2009, 08:45 AM) > Speaking of driving.... Soon? Nothing on the weekend's plan for this side of the planet. Mid week at the earliest. The transmission is kind of sticky and we have trouble engaging the reverse. Paolo. -------------------- Disclaimer: all opinions, ideas and information included here are my own,and should not be intended to represent opinion or policy of my employer.
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Mar 29 2009, 12:46 PM
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#524
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 Member Group: Members Posts: 578 Joined: 5-November 04 From: Denmark Member No.: 107 |
What is this supposed to mean?
-------------------- "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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Mar 29 2009, 01:02 PM
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#525
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Founder Group: Chairman Posts: 14432 Joined: 8-February 04 Member No.: 1 |
http://en.wikipedia.org/wiki/Humor
What isn't funny - is your full inline quote. I've cleared it up for you. |
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