Going To Mogollon..., ...and points South |
Going To Mogollon..., ...and points South |
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Senior Member ![]() ![]() ![]() ![]() Group: Members Posts: 2998 Joined: 30-October 04 Member No.: 105 ![]() |
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. ![]() ![]() ![]() 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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Guest_Sunspot_* |
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Founder ![]() ![]() ![]() ![]() Group: Chairman Posts: 14432 Joined: 8-February 04 Member No.: 1 ![]() |
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Member ![]() ![]() ![]() Group: Members Posts: 290 Joined: 26-March 04 From: Edam, The Netherlands Member No.: 65 ![]() |
Mobility wise, Opportunity is in fairly good health. Once they get that arm stowed, we'll be under way I'm sure. Doug I don't understand why they completely stow the arm as soon as a long drive needs to be done. Why is this so important ? Do they really think something will break while the arm is in "half stowed" position (over the solar panel) ? They drive 5 mm's a second. It's not " bumping", it is like a snail creeping across the terrain ! I've been asking this to myself for a long time. Maybe i oversee something, but the risk of another winding breaking in the faulty joint (thereby completely disabling the possibility to UNstow the IDD for the rest of the mission) looks much higher to me, than the chance of breaking something because of driving in the alternative (half stowed) position. There are two primairy windings in these motors aren't there ? There's only one left. And forcing a higher current trough it at this stage (while materials are getting old) doesn't make sense to me. I'm puzzled. It has been unstowed AFTER a pretty bad situation of stalls and erronous behaviour. LEAVE IT THERE ! Or maybe i'm not informed well enough.... ![]() |
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#5
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Founder ![]() ![]() ![]() ![]() Group: Chairman Posts: 14432 Joined: 8-February 04 Member No.: 1 ![]() |
I don't understand why they completely stow the arm as soon as a long drive needs to be done. Why is this so important ? Do they really think something will break while the arm is in "half stowed" position (over the solar panel) ? They drive 5 mm's a second. It's not " bumping", it is like a snail creeping across the terrain ! If you hunt back in the movie archive at the JPL site, you'll see some rover driving videos - ditto the NOVA programs - and given that there's essentially a tiny tiny bit of suspension within the wheels but nothing else - it's quite a rough ride even over the fairly flat rocks and terrain we have here. Given that suprisingly bumpy ride, the mass of the instruments on the IDD, and the leverage they'd have on the joints and motors when in the 'hover' position, there is a real risk of damage to IDD joints, motors, even the front of that array and the nearest instrument. Hence the high-park for short drives, and the proper drive for longer driving campaigns. Doug |
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