Spirit retrospective, - a few details from my current project |
Spirit retrospective, - a few details from my current project |
Jan 20 2012, 09:13 PM
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#1
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Solar System Cartographer Group: Members Posts: 10256 Joined: 5-April 05 From: Canada Member No.: 227 |
I'm working on Spirit at the moment. I will post a few examples of things as I go.
Right now the important job is updating the contemporary route map by locating the stops on HiRISE images. The existing maps at JPL, for the early part of the mission, were plotted on MOC images with inferior resolution and lighting, so I find many locations were about 15 or 20 m out. So at every site I am making circular panoramas (examples later) for comparison with HiRISE. Here's a first example, a map of the route during the Primary Mission. I have added a few extra placenames from the MER Analyst's Notebook at PDS. Phil -------------------- ... because the Solar System ain't gonna map itself.
Also to be found posting similar content on https://mastodon.social/@PhilStooke Maps for download (free PDF: https://upload.wikimedia.org/wikipedia/comm...Cartography.pdf NOTE: everything created by me which I post on UMSF is considered to be in the public domain (NOT CC, public domain) |
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Jan 20 2012, 09:35 PM
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#2
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Member Group: Members Posts: 717 Joined: 3-December 04 From: Boulder, Colorado, USA Member No.: 117 |
Gorgeous! Are these for a book?
John |
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Jan 20 2012, 10:22 PM
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#3
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Member Group: Members Posts: 655 Joined: 22-January 06 Member No.: 655 |
I like that a lot Phil - very nice.
There seems to be a trend in many space/astronomy magazine articles and books for over-doing the colour. If it is for a book, please leave it grayscale - it looks more crisp and authoritative imho. I look forward to future posts on your progress. |
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Jan 20 2012, 11:00 PM
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#4
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Merciless Robot Group: Admin Posts: 8789 Joined: 8-December 05 From: Los Angeles Member No.: 602 |
VERY nice work, Phil!!!!
-------------------- 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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Jan 20 2012, 11:26 PM
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#5
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Solar System Cartographer Group: Members Posts: 10256 Joined: 5-April 05 From: Canada Member No.: 227 |
-------------------- ... because the Solar System ain't gonna map itself.
Also to be found posting similar content on https://mastodon.social/@PhilStooke Maps for download (free PDF: https://upload.wikimedia.org/wikipedia/comm...Cartography.pdf NOTE: everything created by me which I post on UMSF is considered to be in the public domain (NOT CC, public domain) |
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Jan 21 2012, 06:47 AM
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#6
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Member Group: Members Posts: 295 Joined: 2-March 04 From: Central California Member No.: 45 |
I wonder if they regret not going around Bonneville to the heat shield. Spirit could have easily made the trip and may have avoided the problem with the wheel that started around sol 125 when making the trek to the hills. Seeing this map reminded me of those heady early days when you had no idea how far they would take Spirit.
-------------------- Eric P / MizarKey
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Jan 21 2012, 07:27 AM
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#7
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Founder Group: Chairman Posts: 14448 Joined: 8-February 04 Member No.: 1 |
How would driving to the heatshield have avoided the wheel problem?
Giving the information available at the time, sprinting to the hills was clearly the right decision to make. |
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Jan 21 2012, 02:53 PM
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#8
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Senior Member Group: Admin Posts: 4763 Joined: 15-March 05 From: Glendale, AZ Member No.: 197 |
Giving the information available at the time, sprinting to the hills was clearly the right decision to make. Given the information we have today it was still the right decision to make. I would also venture that the experience with Spirit's wheel allowed the team to understand the malfunction and take steps to avoid the same with Opportunity on her epic trek. -------------------- If Occam had heard my theory, things would be very different now.
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Jan 21 2012, 04:27 PM
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#9
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Senior Member Group: Members Posts: 2173 Joined: 28-December 04 From: Florida, USA Member No.: 132 |
And don't forget that Spirit made some fantastic discoveries because of that stuck wheel. Particularly the subsurface silica layer.
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Jan 21 2012, 04:52 PM
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#10
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Member Group: Members Posts: 808 Joined: 10-October 06 From: Maynard Mass USA Member No.: 1241 |
(1) Having Spirit driving to its crumbled heat-shield on Bonneville and the eventual wheel failure, are not related
(2) The heat-shield, while visually interesting to us (a man made object on mars!), was smashed up on the rocks and of no real value to the engineers. They could get the same results by dropping a copy over the desert in CA (3) As we learned with OPPY, the heat-shield is a lingering source of volatiles that are not good for scientific instruments (3) Scooting to the hills was the right exploration decision. Here is Spririt's crumbled heat-shield (super res): http://www.unmannedspaceflight.com/index.p...st&id=10115 -------------------- CLA CLL
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Jan 21 2012, 05:07 PM
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#11
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Founder Group: Chairman Posts: 14448 Joined: 8-February 04 Member No.: 1 |
(2) The heat-shield, while visually interesting to us (a man made object on mars!), was smashed up on the rocks and of no real value to the engineers. They could get the same results by dropping a copy over the desert in CA Actually- that's not true. The engineers who looked at the Opportunity heatshield did get some value out of it. If it was of no real value to the engineers - then the geologists in charge would not have stopped to look at it at Meridiani. |
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Feb 4 2012, 12:14 AM
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#12
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Member Group: Members Posts: 866 Joined: 15-March 05 From: Santa Cruz, CA Member No.: 196 |
imho, the wreck of Oppy's heatshield was one of the most interesting stops between Endurance and Victoria. Engineers could analyse for the first time the performance of the ablative material, etc in situ, though i dont know what ever came out of that.. maybe just confirmation they didnt need to change a thing 'hmm yep, it did its job as expected!' not to mention lots of fascinating images of crumpled metal, freshly disturbed soil, remnants of destroyed spacecraft, broken springs and all so curiously tossed asunder manmade derelict debris in such an alien humanless landscape, unforgettable..
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Feb 4 2012, 08:44 AM
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#13
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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 |
Rob Manning recentely wrote about this here (i think) but I'm not able to find what he said. Anybody read this?
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Feb 4 2012, 03:29 PM
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#14
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Senior Member Group: Members Posts: 2173 Joined: 28-December 04 From: Florida, USA Member No.: 132 |
Rob Manning recentely wrote about this here... From these two posts in the same thread: Here and here."Indeed there was a lot of concern when we drove Opportunity to its heatshield after landing (at my and my team's behest). We wanted to learn more about the heatshield performance (we learned a lot!)." "Unfortunately, while the rover was near the heatshield, apparently wind picked up some particulates that got onto the rear Hazcam lenses. It may have been a coincidence and it was only Mars dust but more probably it was char from the heatshield that the wind blew onto the lenses." "In summary we concluded that the char depth of the heat shield material matched our predictions (yea!). We also learned that a piece of a mylar blanket that skirted the heat shield became a "flap" that induced some minor but very noticeable wiggles of the entry vehicle (capsule) during Opportunity's entry just before parachute deployment. The blanket was supposed to fully melt away during entry but we found that part of it did not (it was on Mars still attached to the crumpled heat shield). Its position and size matched our entry dynamic simulations for a flapping flap. Needless to say MSL does not have a blanket covering its heat shield (neither did Phoenix)." |
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Feb 6 2012, 05:43 PM
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#15
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Solar System Cartographer Group: Members Posts: 10256 Joined: 5-April 05 From: Canada Member No.: 227 |
Here's another example of recent work. Hank's Hollow. I may be revising the route a bit but this is tied to the images as much as possible.
Phil -------------------- ... because the Solar System ain't gonna map itself.
Also to be found posting similar content on https://mastodon.social/@PhilStooke Maps for download (free PDF: https://upload.wikimedia.org/wikipedia/comm...Cartography.pdf NOTE: everything created by me which I post on UMSF is considered to be in the public domain (NOT CC, public domain) |
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