The Start of the Drive East, Up to Cambridge Bay |
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The Start of the Drive East, Up to Cambridge Bay |
 Jul 14 2010, 03:15 PM
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#121
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 The Poet Dude  Group: Moderator Posts: 5551 Joined: 15-March 04 From: Kendal, Cumbria, UK Member No.: 60  |
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Jul 14 2010, 03:21 PM
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#122
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 Member Group: Members Posts: 808 Joined: 10-October 06 From: Maynard Mass USA Member No.: 1241 |
Driving east on 7075-aluminum wheels ...
Here is the cleat on the machined wheel One function is bolt down access to secure the MER to its ride; the other is visual odometry (Wheels made by Next Intent, San Luis Obispo, CA) -------------------- CLA CLL
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Jul 14 2010, 04:04 PM
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#123
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 Senior Member Group: Members Posts: 4246 Joined: 17-January 05 Member No.: 152 |
QUOTE (brellis @ Jul 14 2010, 04:18 AM)  Looking at the tread marks, it looks like they stop and dig in on a regular basis -- what causes this? Does the rover stop after every wheel rotation? I know it's getting rather late in the rover mission now, but is it worth considering a FAQ for (non-Spirit-extraction) questions like this? For everyone who posts a question like this, I'm sure there are many readers who wonder but don't post. I'm sure we could come up with a good batch of questions. I guess the real question is: Volunteers? |
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Jul 15 2010, 12:10 AM
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#124
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 Member Group: Members Posts: 813 Joined: 8-February 04 From: Arabia Terra Member No.: 12 |
QUOTE (jamescanvin @ Jul 14 2010, 07:05 AM) And another one tosol (2300!)... ...and 2301!  No doubt this helped: QUOTE Love those Martian dust busters! A recent wind gust cleaned Oppy’s solar panels giving her a little power boost for the road. http://twitter.com/MarsRovers/status/18558575893 |
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Jul 15 2010, 12:58 AM
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#125
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 Member Group: Members Posts: 754 Joined: 9-February 07 Member No.: 1700 |
Has a dust devil ever been confirmed to have dumped dust onto a rover?
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Jul 15 2010, 03:57 AM
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#126
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Solar System Cartographer Group: Members Posts: 10153 Joined: 5-April 05 From: Canada Member No.: 227 |
Dust storms dump dust, but dust devils only raise it. Most of these cleaning events are probably just gusts, not really dust devils.
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 PD: 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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Jul 15 2010, 04:14 AM
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#127
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Member Group: Members Posts: 754 Joined: 9-February 07 Member No.: 1700 |
Gotcha on the gust factor.
If the devils only raise the dust, does it only fall during the storms? I guess I'm wondering if there are "dirtying" events, separate from the big storms. |
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Jul 15 2010, 04:27 AM
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#128
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Founder Group: Chairman Posts: 14432 Joined: 8-February 04 Member No.: 1 |
Dust is being put into and dropping out of the atmosphere all the time basically. DD's are especially good at picking it up. Major dust storms kick up more dust and then, as they clear, dump that dust back down again.
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Jul 15 2010, 05:42 AM
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#129
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 Member Group: Members Posts: 691 Joined: 21-December 07 From: Clatskanie, Oregon Member No.: 3988 |
QUOTE (PDP8E @ Jul 14 2010, 07:21 AM) Here is the cleat on the machined wheel At first, that image of the real CNC Machined wheel you provided looked a heck of a lot like ScooterLords rendered wheel. Damn did he do a good job! http://www.unmannedspaceflight.com/index.p...t=0&start=0 |
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Jul 15 2010, 10:05 AM
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#130
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Senior Member Group: Members Posts: 2998 Joined: 30-October 04 Member No.: 105 |
And visual confirmation of the recent cleaning event... Sol2299.
--Bill
Attached thumbnail(s)
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Jul 15 2010, 11:55 AM
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#131
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Member Group: Members Posts: 691 Joined: 21-December 07 From: Clatskanie, Oregon Member No.: 3988 |
Judging from the dust streaks, the gust looks like it came from the East.
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Jul 15 2010, 01:05 PM
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#132
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Solar System Cartographer Group: Members Posts: 10153 Joined: 5-April 05 From: Canada Member No.: 227 |
Tim Parker has posted a new route map updated to 2300:
http://marsrovers.jpl.nasa.gov/mission/tm-...B_Sol2300_1.jpg Looking to the east there's a patch of rough-looking drifts, so I would imagine a detour to the south will be coming up very soon. 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 PD: 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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Jul 15 2010, 02:19 PM
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#133
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Junior Member Group: Members Posts: 90 Joined: 23-February 09 From: Edmonton, Alberta Member No.: 4611 |
Scott @marsroverdriver had some interesting Oppy comments on Twitter last night
#Opportunity is 40% of the way from Victoria to Endeavour. I have an idea to speed up our drives as much as 30%. Discussion tomorrow. #A 30% speedup would shave 2-3 months off our trip to Endeavour -- maybe even more than that. Worth a try! Phyllosilicates, here we come! Like that kind of talk  |
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Jul 15 2010, 03:04 PM
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#134
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Senior Member Group: Members Posts: 4246 Joined: 17-January 05 Member No.: 152 |
QUOTE (Bill Harris @ Jul 15 2010, 11:05 AM) And visual confirmation of the recent cleaning event... Sol2299. Good catch, Bill! I didn't even bother checking the pics, since usually Oppy's cleaning events have been pretty subtle. I can't wait to hear the numbers on this event. Edit: here's a before-and-after comparison:
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Jul 15 2010, 03:14 PM
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#135
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 Senior Member Group: Admin Posts: 4763 Joined: 15-March 05 From: Glendale, AZ Member No.: 197 |
QUOTE (Bill Harris @ Jul 15 2010, 02:05 AM) And visual confirmation of the recent cleaning event... Sol2299. Anyone have the latest power numbers? Are we back up to 900 WHrs yet for some midnight astronomy? -------------------- If Occam had heard my theory, things would be very different now.
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