Endeavour Drive - Drivability analysis |
Endeavour Drive - Drivability analysis |
Sep 21 2008, 09:37 PM
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#106
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Special Cookie Group: Members Posts: 2168 Joined: 6-April 05 From: Sintra | Portugal Member No.: 228 |
Now that Opportunity is going that way, I hope we actually get to see the "darkened" or "scraped" terrain southeast of Mini-Endurance, mentioned here. I'm staking this out as my own "El Dorado", ustrax Perhaps in about a year? huumm...promising...somehow it reminded me of Southern Elysium's "frozen sea"... ...And every man has the right and the moral obligation of having an "El Dorado" of his own... -------------------- "Ride, boldly ride," The shade replied, "If you seek for Eldorado!"
Edgar Alan Poe |
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Sep 21 2008, 10:18 PM
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#107
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Senior Member Group: Admin Posts: 4763 Joined: 15-March 05 From: Glendale, AZ Member No.: 197 |
Now that Opportunity is going that way, I hope we actually get to see the "darkened" or "scraped" terrain southeast of Mini-Endurance, mentioned here. I'm guessing a whole bunch of "Anatolia-like" features. Paolo better get plenty of sleep so as not to nod off as he puts down the lead foot through this region. -------------------- If Occam had heard my theory, things would be very different now.
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Guest_Oersted_* |
Sep 21 2008, 10:24 PM
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#108
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Guests |
Let's get the ball (wheels) rolling and get some ideas out. Paolo Paolo, welcome, good to see you here! Could you possibly elaborate on the "new driving techniques that will enable up to 100 m. daily drives" that Steve S. mentioned in the radio programme? - Does it involve the autonomous navigation or something completely different? HiRise image integration with MER roving software? Good luck in the coming endeavour, I wish you six healthy ! |
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Guest_Bobby_* |
Sep 21 2008, 11:12 PM
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#109
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Guests |
Poor Spirit the Forgotten Rover
Before we start heading south of Victoria. I wish they could stop at the small crater on the Southern Part of Victoria Crater. I think that would be an amazing picture. Then time to rove onto The Yellow Brick Road to Endeavour |
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Sep 21 2008, 11:45 PM
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#110
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Senior Member Group: Moderator Posts: 2785 Joined: 10-November 06 From: Pasadena, CA Member No.: 1345 |
Anatolia...... Sweet! Still one of my favorite features. I hope we get a chance to study more of these in detail. -------------------- Some higher resolution images available at my photostream: http://www.flickr.com/photos/31678681@N07/
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Sep 22 2008, 12:47 AM
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#111
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Member Group: Admin Posts: 976 Joined: 29-September 06 From: Pasadena, CA - USA Member No.: 1200 |
Poor Spirit the Forgotten Rover ... Oh, you are so wrong! It is a heart attack every time I drive her but I would not miss any drive with her. It will take a few weeks before we spin her wheels and we have some interesting tricks we would like to try. 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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Sep 22 2008, 01:00 AM
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#112
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Member Group: Admin Posts: 976 Joined: 29-September 06 From: Pasadena, CA - USA Member No.: 1200 |
... Could you possibly elaborate on the "new driving techniques that will enable up to 100 m. daily drives" that Steve S. mentioned in the radio programme? - Does it involve the autonomous navigation or something completely different? HiRise image integration with MER roving software? ... We have several tricks we learned in Duck Bay and while driving Spirit on her way to WH3. The D* planner will allow more intelligent navigation around obstacles and we have also learned to write "intelligent" sequences that react to events that we have found can be recognized by the on-board sensors. As an example, during our treck from Cape Verde to the outcrop in Duck Bay we had some instances where the right side of the vehicle was sinking, therefore slowing down and the rover would stop. The recovery was simple: pull back, turn left, drive forward and then resume the drive. Well, this technique was easy to recognize on board, and the recovery easy enough that we felt confident to let the rover to autonomously do it. I can't recall the sol number, but that technique was actually triggered and recovered the rover from one of these events. It saved us only one sol, but that's the type of tricks we will probably implement. Also, we are prepared (and so should you ) to have embedding events (not like Purgatory, but more like Jammerbugt). We surely will have some other accidents on our way there. The only sensible thing to do is to minimize the consequences! 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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Sep 22 2008, 01:49 AM
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#113
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Member Group: Members Posts: 144 Joined: 17-July 07 From: Canberra Australia Member No.: 2865 |
Thanks for the insights Paolo. I continue to be somewhat in awe of the way the movement control capabilities of the rover are progressively enhanced. What you guys have achieved with a robotic (as opposed to remote control) vehicle, despite all the risk factors involved in pre-programmed logic, is almost unbelievable.
But as with the poets take on Odysseus' journey to Ithaka, don't hurry because wealth (knowledge) will accumulate during the trip. So it is better if the journey lasts for years, then he will not expect Ithaka to make him rich. |
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Sep 22 2008, 02:44 AM
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#114
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Member Group: Admin Posts: 976 Joined: 29-September 06 From: Pasadena, CA - USA Member No.: 1200 |
Here's a comparison of textures, all at 100% from the IAS viewer provided on the HiRISE site. It's not at all useful to view the images at lower resolution. ... This is excellent. Thanks to you all who contributed so far. It will take me a few days to digest all this. I will keep you posted. 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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Sep 22 2008, 03:20 AM
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#115
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Senior Member Group: Admin Posts: 4763 Joined: 15-March 05 From: Glendale, AZ Member No.: 197 |
Here's a comparison of textures, all at 100% from the IAS viewer provided on the HiRISE site. It's not at all useful to view the images at lower resolution. Fantastic idea Phil. I love it. -------------------- If Occam had heard my theory, things would be very different now.
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Sep 22 2008, 04:07 AM
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#116
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Member Group: Members Posts: 530 Joined: 21-March 06 From: Canada Member No.: 721 |
Thanks, Phil for the comparison shots, and Tman for that viewer. Due south does seem a lot more attractive now.
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Sep 22 2008, 06:13 AM
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#118
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Senior Member Group: Members Posts: 2228 Joined: 1-December 04 From: Marble Falls, Texas, USA Member No.: 116 |
... Due south from Victoria is very feasible. The drifts never get as big as to the north, and after a few km they give way to surfaces nearly as smooth as the area near Endurance, but with more flat outcrops - this from the HiRISE image extending furthest south and east. So, south until the drifts disappear, and then southeast via the Endurance-like crater to the isolated hill on Endeavour's rim is very realistic. ... I spent most of the night reconsidering this, and I still agree with you and mhoward, Phil. Your array of HiRise crops was a genius idea for those people who don't have the IAS software or know of the viewer page previously posted for zooming and panning. That general route seems to almost be a no-brainer if the overriding goal to minimize risk, which I think it should be. As we've seen in the past, opportunistic science targets like the cobbles and meteorites are randomly distributed. Ancient craters like Erebus are seen everywhere that bedrock is exposed. Once the rover gets closer to Endeavor, there are some very interesting, previously buried craters that might be worth a visit. I also find the Anatolia-like fractures fascinating. It appears we will see many of them once Opportunity is as far south as mini-Endurance. I'm not sure how important they will be to the scientists unless we find some that are large enough and safe enough to drive down into where Oppy can study a vertical section of rock. Paolo: I hate to add another question to the many being thrown at you, but I think this is an easy one, being MER trivia. Some of us occasionally refer to Opportunity as Oppy, as I did above. It's partially an abbreviation convenience, but also an endearing expression. I always wondered if those of you on the MER team had any nicknames for the rovers, or if nicknames were considered to be in bad form. -------------------- ...Tom
I'm not a Space Fan, I'm a Space Exploration Enthusiast. |
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Sep 22 2008, 06:19 AM
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#119
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Member Group: Members Posts: 813 Joined: 8-February 04 From: Arabia Terra Member No.: 12 |
A consensus is forming! South it is!
I like Phil's comparison shots. What I'm thinking of doing now is taking this and extending it by making a colour coded geologic map overlay for the HiRISE frames based purely on ripple types. I just want to check first to see if anyone else is already working on it because it seems to be the obvious next step. |
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Sep 22 2008, 06:59 AM
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#120
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Senior Member Group: Members Posts: 2228 Joined: 1-December 04 From: Marble Falls, Texas, USA Member No.: 116 |
I'd say, if you can do that, there are many here who would very much like to see your map. I, for one, am dying to see it.
-------------------- ...Tom
I'm not a Space Fan, I'm a Space Exploration Enthusiast. |
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