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Going To Mogollon..., ...and points South
Bill Harris
post Jan 20 2006, 02:30 PM
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QUOTE (Tesheiner @ Jan 20 2006, 05:38 AM)
It was already said that those structures seen on previous hazcam pics (well, in all sort of cameras and filters...) were delicate.

[attachment=3535:attachment] (138k)
But what about these ones? It looks like the smallest touch could broke them.

[attachment=3536:attachment] (138k)
PS: It's time to open a new thread, don't you think so?
*


Good idea. That topic was "tired" and had the cord showing. smile.gif biggrin.gif tongue.gif

Delicate, to be sure. One thing I've noticed is that the "ledge-forming" rocks are a layer and extend to the right and left of where we camped out. I wonder if that feature is related to the bluff at Mogollon Rim?

We need to check out the "mobile dust" at that site and see if there has been more movement during the stopover.
--Bill


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mars_armer
post Feb 18 2006, 04:17 PM
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Actually, the present strategy means the arm is never permanently stowed. It only gets stowed during a long drive, then immediately unstowed to the ready position at the end of the drive. This is to ensure that the arm is unstowed if/when the joint 1 motor finally gives out.

The joint 1 motor (with the broken winding) is difficult to operate because its electrical properties fluctuate as the motor goes through a turn, as the broken wire commutates. This only causes trouble when the motor is starting or stopping, as it has to overcome the magnetic detents.
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Cugel
post Feb 18 2006, 06:34 PM
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QUOTE (mars_armer @ Feb 18 2006, 05:17 PM) *
Actually, the present strategy means the arm is never permanently stowed. It only gets stowed during a long drive, then immediately unstowed to the ready position at the end of the drive. This is to ensure that the arm is unstowed if/when the joint 1 motor finally gives out.

The joint 1 motor (with the broken winding) is difficult to operate because its electrical properties fluctuate as the motor goes through a turn, as the broken wire commutates. This only causes trouble when the motor is starting or stopping, as it has to overcome the magnetic detents.


Question: does this mean that when the joint motor does fail and the arm can not be stowed anymore, there will be no more long drives for Opportunity? And can we conclude from this that the team has decided that a rover without IDD has less scientific value than a relatively static platform with IDD?
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hugh
post Feb 19 2006, 07:30 AM
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QUOTE (Cugel @ Feb 18 2006, 06:34 PM) *
can we conclude from this that the team has decided that a rover without IDD has less scientific value than a relatively static platform with IDD?

I'm wondering about this too. I certainly hope not. Even without the IDD arm the rover still has all the cameras except the MI, plus the mini-TES. The RAT is at or near the end of its useful life. The whole point of having a rover is to have mobility, so to be mobile should have priority, and the sooner the better.
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Posts in this topic
- Bill Harris   Going To Mogollon...   Jan 20 2006, 02:30 PM
- - lyford   Does it look like there was any piled deposition o...   Jan 20 2006, 05:28 PM
- - Bill Harris   Ed, it may very well be that sand has piled up n t...   Jan 20 2006, 07:03 PM
- - Tesheiner   An article at Space.com: http://www.space.com/mis...   Jan 21 2006, 06:10 PM
- - Sunspot   ..week or so?   Jan 21 2006, 07:40 PM
- - ilbasso   They didn't say which week.   Jan 22 2006, 05:16 AM
- - CosmicRocker   Well, that pretty much confirms that more MIs of t...   Jan 22 2006, 06:48 AM
- - Bill Harris   > I am really anxious to get to Mogollon, but i...   Jan 22 2006, 07:54 AM
|- - ElkGroveDan   QUOTE (Bill Harris @ Jan 22 2006, 07:54 AM)We...   Jan 22 2006, 03:20 PM
- - Bill Harris   Foo. --Bill   Jan 22 2006, 06:30 PM
- - alan   QUOTE (Tesheiner @ Jan 21 2006, 12:10 PM)An a...   Jan 29 2006, 08:54 PM
|- - Shaka   QUOTE (alan @ Jan 29 2006, 10:54 AM)Oppy leav...   Jan 29 2006, 09:26 PM
- - dot.dk   QUOTE (alan @ Jan 29 2006, 08:54 PM)Oppy leav...   Jan 29 2006, 09:42 PM
|- - Shaka   QUOTE (dot.dk @ Jan 29 2006, 11:42 AM)From: h...   Jan 30 2006, 01:27 AM
- - jvandriel   The last images are down and here is the 360 degre...   Jan 30 2006, 09:50 AM
- - slinted   Since this is the thread for "...and points s...   Jan 31 2006, 12:21 AM
|- - jamescanvin   QUOTE (slinted @ Jan 31 2006, 11:21 AM)Since ...   Jan 31 2006, 01:52 AM
- - Bill Harris   I have long commented jokingly that the "rout...   Jan 31 2006, 12:39 AM
- - SigurRosFan   No Mogollon Rim close-up's?? http://athena.co...   Jan 31 2006, 09:47 PM
|- - Toma B   QUOTE (SigurRosFan @ Feb 1 2006, 12:47 AM)No ...   Jan 31 2006, 09:57 PM
|- - Shaka   QUOTE (SigurRosFan @ Jan 31 2006, 11:47 AM)No...   Jan 31 2006, 09:59 PM
- - Sunspot   According to the latest rover article at the Plane...   Feb 1 2006, 06:32 PM
|- - Nirgal   looks like they finally decided to switch the prio...   Feb 1 2006, 09:15 PM
|- - tacitus   QUOTE (Nirgal @ Feb 1 2006, 03:15 PM)looks li...   Feb 1 2006, 10:12 PM
|- - Nirgal   QUOTE (tacitus @ Feb 2 2006, 12:12 AM)Don...   Feb 2 2006, 12:53 AM
|- - Tesheiner   QUOTE (Nirgal @ Feb 2 2006, 01:53 AM)What I...   Feb 2 2006, 08:46 AM
- - RNeuhaus   The real interesting thing from Mogollon rim is th...   Feb 1 2006, 09:59 PM
- - Bill Harris   I will agree. If it hadn't been for the IDD p...   Feb 2 2006, 11:04 AM
- - Bill Harris   Presented here is a 3x vertical exaggeration from ...   Feb 16 2006, 02:01 PM
|- - Bob Shaw   Anyone know what the strategy is for Opportunity r...   Feb 16 2006, 02:32 PM
- - Tesheiner   QUOTE (Bob Shaw @ Feb 16 2006, 03:32 PM) ...   Feb 16 2006, 02:45 PM
|- - helvick   QUOTE (Tesheiner @ Feb 16 2006, 02:45 PM)...   Feb 16 2006, 03:47 PM
- - Burmese   http://www.newscientistspace.com/article.ns?id=dn8...   Feb 16 2006, 03:33 PM
- - Bill Harris   Also since this site a only a couple of degrees So...   Feb 16 2006, 03:49 PM
- - djellison   Power 19% further out will be 41% lower, I think ...   Feb 16 2006, 03:51 PM
|- - helvick   QUOTE (djellison @ Feb 16 2006, 03:51 PM)...   Feb 16 2006, 07:02 PM
|- - Nirgal   QUOTE (helvick @ Feb 16 2006, 08:02 PM) T...   Feb 16 2006, 07:45 PM
- - Phil Stooke   Burmese quoted a story from New Scientist, ...   Feb 16 2006, 05:26 PM
- - Tesheiner   Not only that, but the rover would have to make th...   Feb 16 2006, 05:35 PM
|- - Toma B   QUOTE (Tesheiner @ Feb 16 2006, 08:35 PM)...   Feb 16 2006, 06:59 PM
||- - Marcel   B)-->QUOTE(Toma B @ Feb 16 2006, 07:59 PM...   Feb 16 2006, 07:47 PM
||- - Nirgal   QUOTE (Marcel @ Feb 16 2006, 08:47 PM) Bu...   Feb 16 2006, 08:16 PM
|||- - Marcel   QUOTE (Nirgal @ Feb 16 2006, 09:16 PM) Im...   Feb 16 2006, 08:37 PM
||- - helvick   Victoria is apparently somewhere between 2500 and ...   Feb 16 2006, 08:29 PM
|||- - Marz   QUOTE (helvick @ Feb 16 2006, 02:29 PM) V...   Feb 16 2006, 10:48 PM
|||- - Marslauncher   So didnt I read that we should have had a drive? h...   Feb 17 2006, 02:20 AM
||||- - Shaka   QUOTE (Marslauncher @ Feb 16 2006, 04:20 ...   Feb 17 2006, 03:49 AM
||||- - jamescanvin   QUOTE (Shaka @ Feb 17 2006, 02:49 PM) ......   Feb 17 2006, 05:58 AM
|||||- - tacitus   Are they still trying to stow the arm completely o...   Feb 17 2006, 07:11 AM
|||||- - Tesheiner   QUOTE (tacitus @ Feb 17 2006, 08:11 AM) A...   Feb 17 2006, 09:07 AM
||||- - Tesheiner   QUOTE (Shaka @ Feb 17 2006, 04:49 AM) The...   Feb 17 2006, 08:56 AM
|||- - helvick   QUOTE (Marz @ Feb 16 2006, 10:48 PM) Yike...   Feb 18 2006, 10:16 PM
||- - bergadder   QUOTE (Marcel @ Feb 16 2006, 02:47 PM) --...   Feb 17 2006, 04:23 AM
||- - Marslauncher   I fully support science days and investigation, I ...   Feb 17 2006, 05:38 AM
|- - djellison   QUOTE (Tesheiner @ Feb 16 2006, 05:35 PM)...   Feb 16 2006, 08:44 PM
- - Sunspot   The tech probs are really stacking up...Im beginin...   Feb 17 2006, 09:33 AM
|- - djellison   QUOTE (Sunspot @ Feb 17 2006, 09:33 AM) ...   Feb 17 2006, 09:43 AM
|- - Marcel   QUOTE (djellison @ Feb 17 2006, 10:43 AM)...   Feb 17 2006, 08:09 PM
|- - djellison   QUOTE (Marcel @ Feb 17 2006, 08:09 PM) I ...   Feb 17 2006, 08:32 PM
|- - mars_armer   The simulations that have been run with an unstowe...   Feb 17 2006, 09:54 PM
|- - jamescanvin   QUOTE (mars_armer @ Feb 18 2006, 08:54 AM...   Feb 17 2006, 10:14 PM
|- - Jeff7   QUOTE (jamescanvin @ Feb 17 2006, 05:14 P...   Feb 18 2006, 01:47 AM
- - Bill Harris   QUOTE Imo, it's one of those two outcrops at t...   Feb 17 2006, 11:10 AM
|- - Tesheiner   QUOTE (Bill Harris @ Feb 17 2006, 12:10 P...   Feb 17 2006, 12:23 PM
- - Bill Harris   "We'll get there eventually..." ...   Feb 17 2006, 01:33 PM
- - Bill Harris   I picked up a "proper" L2 Pancam today a...   Feb 17 2006, 05:02 PM
- - djellison   Looks like a little slice of a baby Burns Cliff in...   Feb 17 2006, 05:10 PM
- - Marz   I was just surfing the sol 734 images and noticed ...   Feb 17 2006, 07:55 PM
- - Bill Harris   The dark-toned dune is Payson. Zane Grey is the l...   Feb 17 2006, 08:06 PM
- - tacitus   I suppose one thing the stowing problems might mea...   Feb 18 2006, 08:37 AM
- - mars_armer   Actually, the present strategy means the arm is ne...   Feb 18 2006, 04:17 PM
|- - Cugel   QUOTE (mars_armer @ Feb 18 2006, 05:17 PM...   Feb 18 2006, 06:34 PM
||- - hugh   QUOTE (Cugel @ Feb 18 2006, 06:34 PM) can...   Feb 19 2006, 07:30 AM
|||- - Nirgal   Question: does this mean that when the joint motor...   Feb 19 2006, 10:27 PM
||- - Toma B   QUOTE (Cugel @ Feb 18 2006, 09:34 PM) Que...   Feb 20 2006, 07:03 AM
|- - RNeuhaus   QUOTE (mars_armer @ Feb 18 2006, 11:17 AM...   Feb 19 2006, 03:49 AM
|- - djellison   QUOTE (RNeuhaus @ Feb 19 2006, 03:49 AM) ...   Feb 19 2006, 09:35 AM
- - Holder of the Two Leashes   Probably get just a little bit more science done t...   Feb 19 2006, 09:13 PM
- - Sunspot   We're a couple of days away from spending 3 mo...   Feb 20 2006, 12:41 AM
- - alan   QUOTE (Nirgal @ Feb 19 2006, 04:27 PM) Qu...   Feb 20 2006, 12:51 AM
|- - tacitus   QUOTE (alan @ Feb 19 2006, 06:51 PM) I su...   Feb 20 2006, 02:23 AM
|- - hugh   QUOTE (tacitus @ Feb 20 2006, 02:23 AM) W...   Feb 20 2006, 08:39 AM
|- - djellison   QUOTE (hugh @ Feb 20 2006, 08:39 AM) Not ...   Feb 20 2006, 09:12 AM
- - Bill Harris   It would be nice to have the IDD instruments, but ...   Feb 20 2006, 02:48 AM
|- - ElkGroveDan   QUOTE (Bill Harris @ Feb 20 2006, 02:48 A...   Feb 20 2006, 03:17 AM
- - neb   QUOTE (Bill Harris @ Feb 19 2006, 07:48 P...   Feb 20 2006, 03:21 AM
|- - Shaka   QUOTE (neb @ Feb 19 2006, 05:21 PM) Bill:...   Feb 20 2006, 04:46 AM
|- - ElkGroveDan   QUOTE (Shaka @ Feb 20 2006, 04:46 AM) I w...   Feb 20 2006, 04:28 PM
- - djellison   If the IDD breaks, then do what can be done with w...   Feb 20 2006, 08:34 AM
|- - JTN   QUOTE (djellison @ Feb 20 2006, 08:34 AM)...   Feb 20 2006, 02:00 PM
|- - jabe   QUOTE (JTN @ Feb 20 2006, 02:00 PM) Could...   Feb 20 2006, 02:09 PM
|- - djellison   QUOTE (JTN @ Feb 20 2006, 02:00 PM) Could...   Feb 20 2006, 03:11 PM
- - jvandriel   A panoramic view of Mogollon. Taken on Sol 734 wi...   Feb 20 2006, 11:50 AM
- - Bill Harris   QUOTE They need to find a way to stow it and get m...   Feb 20 2006, 12:20 PM
|- - sranderson   Unfortunately, we haven't found anything new w...   Feb 20 2006, 07:28 PM
- - centsworth_II   If the IDD breaks while extended they could drive ...   Feb 20 2006, 03:28 PM
- - odave   I hate contributing more negative waves to the dis...   Feb 20 2006, 03:31 PM
|- - djellison   QUOTE (odave @ Feb 20 2006, 03:31 PM) I h...   Feb 20 2006, 04:50 PM
- - Tesheiner   Will we see "Oppy leaves Olympia (aka Purgato...   Feb 20 2006, 05:30 PM
- - djellison   Again - you're making the mistake in assuming ...   Feb 20 2006, 08:00 PM
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