The Storm, Dust storm of 2007 |
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The Storm, Dust storm of 2007 |
 Aug 24 2007, 06:50 AM
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#496
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 Member  Group: Members Posts: 101 Joined: 29-January 06 Member No.: 667  |
Opportunity: Daily Update - 8/23/07
Brightening Skies Bolster Opportunity Opportunity Status for sol 1256 - 1265 QUOTE Opportunity is healthy and remains perched near the rim of "Victoria Crater." The rover was on a low-power schedule that alternated between a 3-sol plan and a 4-sol plan.
Tau (atmospheric opacity) has begun to stabilize this week at around 3.7, resulting in solar array energy between 230-240 watt hours. Therefore in the upcoming week, the team will return to nominal planning. |
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Aug 25 2007, 02:06 PM
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#497
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Junior Member Group: Members Posts: 35 Joined: 8-July 05 Member No.: 432 |
Lets all hope that the vibrations of movement will shake most of the dust off..
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Aug 25 2007, 02:19 PM
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#498
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Founder Group: Chairman Posts: 14432 Joined: 8-February 04 Member No.: 1 |
Unlikely - they're not exactly SUV's doing 60mph over rough ground.
Doug |
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Aug 25 2007, 03:57 PM
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#499
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 Senior Member Group: Members Posts: 1281 Joined: 18-December 04 From: San Diego, CA Member No.: 124 |
-------------------- Lyford Rome
"Zis is not nuts, zis is super-nuts!" Mathematician Richard Courant on viewing an Orion test |
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Aug 26 2007, 04:27 AM
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#500
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Member Group: Members Posts: 279 Joined: 19-August 07 Member No.: 3299 |
QUOTE (bergadder @ Aug 25 2007, 09:06 AM)  Lets all hope that the vibrations of movement will shake most of the dust off.. Rover is runing very very slow on a very smooth floor. You can see all spherules are almost sunken under the trail. Hence the rover won't have much vibration unless it get over on a rock and somewhat fast. These conditions won't happen. Now the engineers are testing with a new technique "blobs away" campaign to remove dust from the lens. |
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Aug 26 2007, 02:58 PM
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#501
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 Member Group: Members Posts: 428 Joined: 21-August 06 From: Northern Virginia Member No.: 1062 |
QUOTE (lyford @ Aug 25 2007, 08:57 AM) http://www.sciencedaily.com/releases/2002/...20611071940.htm QUOTE One such activator is a dust wiper, reminiscent of a tiny windshield wiper, that can perform a variety of tasks, such as cleaning the solar panels of a spacecraft. The wiper may be included in a future space mission. Seems like it might be possible. |
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Aug 26 2007, 03:28 PM
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#502
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Founder Group: Chairman Posts: 14432 Joined: 8-February 04 Member No.: 1 |
The electrostatic based cleanign which I've seen videos off at IAC, and mentioned again at EPSC seems the best way to go about it...no moving parts...thin, light, simple.
Doug |
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Aug 26 2007, 03:39 PM
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#503
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 Member Group: Members Posts: 754 Joined: 9-February 07 Member No.: 1700 |
QUOTE The wiper may be included in a future space mission. that, or perhaps a French maid minibot 
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Aug 26 2007, 08:12 PM
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#504
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 Senior Member Group: Members Posts: 3419 Joined: 9-February 04 From: Minneapolis, MN, USA Member No.: 15 |
I still think a small compressor, a thin-walled tank (since it doesn't have to hold that much pressure) and a series of lightweight tubes arrayed at crucial spots around the solar panels makes the most sense. A couple of kg mass investment lets you create your own cleaning events.
You could even re-use a tank used during coast for other purposes. All you need is a vessel that can be pumped up to three to four times the ambient atmospheric pressure and then released through the blower pipes. You can use a very small, very light pump, since you won't have to clean your panels but every few hundred sols, so you don't need to spend an awful lot of time or power at any one given time pumping it up. I still believe such a system could be designed and implemented that only weighs a kg or two, and considering how much of an impact such a system could have on a solar-powered vehicle, it would be well worth the investment. -the other Doug -------------------- “The trouble ain't that there is too many fools, but that the lightning ain't distributed right.” -Mark Twain
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Aug 26 2007, 08:27 PM
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#505
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 Senior Member Group: Members Posts: 2921 Joined: 14-February 06 From: Very close to the Pyrénées Mountains (France) Member No.: 682 |
O Doug,
I say, here is a working version of what you mean. Pipes on ...YouTubes  http://www.youtube.com/watch?v=XgGtjNqrdHA -------------------- |
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Aug 29 2007, 10:20 PM
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#506
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 Administrator Group: Admin Posts: 5172 Joined: 4-August 05 From: Pasadena, CA, USA, Earth Member No.: 454 |
From the "tooting my own horn" department:
Cornell Chronicle online: New images reveal threatening conditions that two rovers face in giant Martian dust storm The release includes versions of my tau-image montages for Opportunity which are, unfortunately, already a week old. I posted more up-to-date versions for both Spirit and Opportunity in the blog just now. --Emily -------------------- My website - My Patreon - @elakdawalla on Twitter - Please support unmannedspaceflight.com by donating here.
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Aug 29 2007, 10:41 PM
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#507
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Founder Group: Chairman Posts: 14432 Joined: 8-February 04 Member No.: 1 |
Horn tooting MORE than justified - it's a brilliant way of showing what's going on. Those dim-suns (sounds like a tasty dish) combined with the dim-skies previously done - they're just face-slappingly good at getting across how much the situation sucks.
Doug |
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Aug 30 2007, 12:59 AM
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#508
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 Interplanetary Dumpster Diver Group: Admin Posts: 4404 Joined: 17-February 04 From: Powell, TN Member No.: 33 |
Cool! They really help people visualize it - the problem that often occurs is that because images of darker scenes are often longer exposures or have been equalized, effects like this are often hidden. Great work!
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Aug 30 2007, 02:17 AM
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#509
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Administrator Group: Admin Posts: 5172 Joined: 4-August 05 From: Pasadena, CA, USA, Earth Member No.: 454 |
It works because Jim gave me the RADs and because of the awesomeness of IMG2PNG. Thanks Bjorn!
--Emily -------------------- My website - My Patreon - @elakdawalla on Twitter - Please support unmannedspaceflight.com by donating here.
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| Guest_AlexBlackwell_* |
Aug 30 2007, 02:18 AM
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#510
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Guests |
QUOTE (elakdawalla @ Aug 29 2007, 04:17 PM) It works because Jim gave me the RADs and because of the awesomeness of IMG2PNG. Thanks Bjorn! We should rename IMG2PNG as "The Bjorn Supremacy." |
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