Wheel Trouble, ...down to 5 good wheels? |
Wheel Trouble, ...down to 5 good wheels? |
  Mar 14 2006, 12:29 AM
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#1
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Junior Member  Group: Members Posts: 90 Joined: 13-January 05 Member No.: 143  |
I hate to be the bearer of bad news, but I just heard that there is a serious problem with Spirit's right front drive actuator after yestersol's drive. (This is the actuator that had high currents in the past and led to the backward-driving strategy.) It will take awhile to evaluate the situation, but early speculation is grim.
In a worst-case scenario, they can still drag the bum wheel along, but don't expect another summit view. Best-case scenario would be a rock or debris jammed in the wheel. This is a heads-up, sorry I can't really give more info at this time. I still thought you all would like to know. |
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Mar 14 2006, 05:53 PM
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#2
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Member Group: Members Posts: 688 Joined: 20-April 05 From: Sweden Member No.: 273 |
Design lesson for future rovers: there should be some simple and reliable mechanism for unclutching a wheel once it is certain that it is inoperable and cannot be recovered. Some kind of pyro mechanism perhaps?
tty |
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Mar 15 2006, 09:49 AM
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#3
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Member Group: Members Posts: 184 Joined: 2-March 06 Member No.: 692 |
QUOTE (tty @ Mar 14 2006, 11:53 AM)  Design lesson for future rovers: there should be some simple and reliable mechanism for unclutching a wheel once it is certain that it is inoperable and cannot be recovered. Some kind of pyro mechanism perhaps? tty In a future mission, how about just blowing off the whole wheel? Pyro wouldn't add much weight. |
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Mar 15 2006, 08:37 PM
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#4
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 Member Group: Members Posts: 646 Joined: 23-December 05 From: Forest of Dean Member No.: 617 |
QUOTE (monty python @ Mar 15 2006, 09:49 AM) In a future mission, how about just blowing off the whole wheel? Pyro wouldn't add much weight. Pyros could malfunction, and go off early - or, worse, simultaneously... Cue bad Micahel Caine impression -- "You're only s'posed to blow the bloody doors off!" -------------------- --
Viva software libre! |
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mars_armer Wheel Trouble Mar 14 2006, 12:29 AM
Myran Thank you for the heads up mars_armer.
With winter... Mar 14 2006, 12:44 AM DFinfrock QUOTE (mars_armer @ Mar 14 2006, 12:29 AM... Mar 14 2006, 01:20 AM Sunspot You mean the wheel will no longer turn at all anym... Mar 14 2006, 01:27 AM
mars_armer QUOTE (Sunspot @ Mar 13 2006, 05:27 PM) Y... Mar 14 2006, 01:44 AM Shaka QUOTE (mars_armer @ Mar 13 2006, 02:29 PM... Mar 14 2006, 01:31 AM Jeff7 Yeah, let's really just hope that it's jus... Mar 14 2006, 03:28 AM BruceMoomaw Do you mean that the wheel won't turn even if ... Mar 14 2006, 04:13 AM Shaka QUOTE (BruceMoomaw @ Mar 13 2006, 06:13 P... Mar 14 2006, 05:15 AM mars_armer QUOTE (Shaka @ Mar 13 2006, 09:15 PM) Do ... Mar 14 2006, 04:37 PM RNeuhaus QUOTE (mars_armer @ Mar 14 2006, 11:37 AM... Mar 15 2006, 12:49 AM BruceMoomaw Under ordinary circumstances that is possible. In... Mar 14 2006, 05:17 AM CosmicRocker Oh, no. So that is one reason why Spirit has move... Mar 14 2006, 07:08 AM djellison QUOTE (CosmicRocker @ Mar 14 2006, 07:08 ... Mar 14 2006, 08:25 AM Bill Harris Oh well, stuff happens. We're all a lot creak... Mar 14 2006, 08:34 AM edstrick I note that both from Husband hill and from the dr... Mar 14 2006, 10:37 AM Marz Poor Spirit, just as she regains the lead in milag... Mar 14 2006, 03:43 PM Bob Shaw QUOTE (tty @ Mar 14 2006, 05:53 PM) Desig... Mar 14 2006, 11:06 PM RNeuhaus QUOTE (tty @ Mar 14 2006, 12:53 PM) Desig... Mar 15 2006, 01:06 AM Ames QUOTE (monty python @ Mar 15 2006, 09:49 ... Mar 15 2006, 10:47 AM odave QUOTE (Ames @ Mar 15 2006, 05:47 AM) But ... Mar 15 2006, 02:16 PM lyford QUOTE (monty python @ Mar 15 2006, 01:49 ... Mar 15 2006, 07:35 PM Bill Harris QUOTE there should be some simple and reliable mec... Mar 14 2006, 06:09 PM alan Something in there?
Mar 14 2006, 07:49 PM Toma B That's good news...if it got in, it can posibl... Mar 14 2006, 08:23 PM helvick [quote name='alan' post='45573' date='Mar 14 2006,... Mar 14 2006, 08:32 PM mars_armer QUOTE (alan @ Mar 14 2006, 11:49 AM) Some... Mar 14 2006, 09:34 PM helvick QUOTE (mars_armer @ Mar 14 2006, 09:34 PM... Mar 14 2006, 09:46 PM helvick QUOTE (helvick @ Mar 14 2006, 09:46 PM) A... Mar 14 2006, 10:05 PM Shaka QUOTE (helvick @ Mar 14 2006, 12:05 PM) A... Mar 14 2006, 10:34 PM helvick QUOTE (Shaka @ Mar 14 2006, 10:34 PM) ...... Mar 14 2006, 10:37 PM Daba QUOTE (helvick @ Mar 14 2006, 11:05 PM) A... Mar 14 2006, 11:28 PM Shaka QUOTE (mars_armer @ Mar 14 2006, 11:34 AM... Mar 14 2006, 09:46 PM Sunspot I thought it might have been a rock at first... bu... Mar 14 2006, 10:55 PM djellison At a first look - it just looks like dust to me - ... Mar 14 2006, 11:05 PM slinted There was a tiny bit of motion between sol 779 and... Mar 14 2006, 11:39 PM ElkGroveDan QUOTE (slinted @ Mar 14 2006, 11:39 PM) T... Mar 15 2006, 01:24 AM djellison That's a very odd motion - at first I thought ... Mar 15 2006, 12:11 AM Bill Harris Not at all good. Slinted's animated-GIF shows... Mar 15 2006, 04:01 AM mars_armer Looks like a drive will be attempted on Sol 781 (d... Mar 15 2006, 04:33 AM edstrick quote: "I've got a little list..... I... Mar 15 2006, 10:49 AM Burmese Yeah, wheel bearing looks likely to me, or some ot... Mar 15 2006, 01:57 PM MahFL Strange co-incidence......today the front left whe... Mar 15 2006, 06:10 PM djellison I gave a talk to some 16-18 y.o. school students t... Mar 15 2006, 06:48 PM Sunspot Still limping along:
http://qt.exploratorium.edu/... Mar 15 2006, 07:54 PM general QUOTE (Sunspot @ Mar 15 2006, 08:54 PM) S... Mar 15 2006, 08:13 PM Marcel QUOTE (Sunspot @ Mar 15 2006, 08:54 PM) S... Mar 15 2006, 08:16 PM Sunspot QUOTE (Marcel @ Mar 15 2006, 08:16 PM) Oh... Mar 15 2006, 08:50 PM Burmese Good, they aren't going to sit still and spend... Mar 15 2006, 08:05 PM elakdawalla Squyres did not mention the wheel trouble in his t... Mar 15 2006, 08:24 PM Shaka QUOTE (elakdawalla @ Mar 15 2006, 10:24 A... Mar 15 2006, 09:07 PM AlexBlackwell QUOTE (Shaka @ Mar 15 2006, 09:07 PM) P.S... Mar 15 2006, 09:10 PM Shaka QUOTE (AlexBlackwell @ Mar 15 2006, 11:10... Mar 15 2006, 09:49 PM djellison QUOTE (Shaka @ Mar 15 2006, 09:49 PM) I s... Mar 15 2006, 10:18 PM odave QUOTE (Shaka @ Mar 15 2006, 04:49 PM) I s... Mar 15 2006, 10:20 PM Shaka QUOTE (odave @ Mar 15 2006, 12:20 PM) See... Mar 15 2006, 11:00 PM ToSeek QUOTE (odave @ Mar 15 2006, 10:20 PM) See... Mar 16 2006, 05:48 PM AlexBlackwell QUOTE (ToSeek @ Mar 16 2006, 05:48 PM) Sh... Mar 16 2006, 05:50 PM helvick QUOTE (AlexBlackwell @ Mar 15 2006, 09:10... Mar 15 2006, 09:54 PM centsworth_II "Looks like she's returning to Home Plate... Mar 15 2006, 09:01 PM Bill Harris >Looks like she's returning to Home Plate
... Mar 15 2006, 10:23 PM djellison I think they moved to the nearest patch that offer... Mar 15 2006, 10:31 PM alan First impression: the right front wheel looks like... Mar 15 2006, 10:34 PM Shaka http://static.flickr.com/41/113051772_e40da86735_o... Mar 15 2006, 11:57 PM CosmicRocker QUOTE (elakdawalla @ Mar 15 2006, 02:24 P... Mar 16 2006, 04:10 AM mars_armer The wheel is definitely looking dead (open circuit... Mar 16 2006, 04:44 PM Sunspot QUOTE (mars_armer @ Mar 16 2006, 04:44 PM... Mar 16 2006, 05:28 PM ToSeek QUOTE (Sunspot @ Mar 16 2006, 05:28 PM) O... Mar 16 2006, 05:50 PM mars_armer > Well, until next summer, at least.
And don... Mar 16 2006, 06:13 PM odave I'm sure the MER engineers will be able to squ... Mar 16 2006, 06:17 PM helvick QUOTE (odave @ Mar 16 2006, 06:17 PM) I... Mar 16 2006, 06:46 PM Bob Shaw QUOTE (helvick @ Mar 16 2006, 06:46 PM) O... Mar 16 2006, 08:46 PM odave Yeah, I know that Ma'adim Vallis is not a real... Mar 16 2006, 06:55 PM Marz QUOTE (odave @ Mar 16 2006, 12:55 PM) Yea... Mar 16 2006, 09:14 PM Shaka QUOTE (Marz @ Mar 16 2006, 11:14 AM) lol ... Mar 16 2006, 10:57 PM djellison The day time temps might be getting to -60 instead... Mar 16 2006, 10:02 PM Jeff7 Can't they just use the routines they develope... Mar 16 2006, 10:46 PM djellison Spirits wheel wasnt stuck back in the 150-350 sol ... Mar 16 2006, 10:50 PM GregM . Mar 17 2006, 03:22 AM Shaka QUOTE (GregM @ Mar 16 2006, 05:22 PM) My ... Mar 17 2006, 04:32 AM RNeuhaus QUOTE (Shaka @ Mar 16 2006, 11:32 PM) As ... Mar 17 2006, 06:11 AM MahFL "We're now in a drive or die situation,... Mar 17 2006, 03:17 PM helvick QUOTE (MahFL @ Mar 17 2006, 03:17 PM) ... Mar 17 2006, 04:08 PM ToSeek QUOTE (helvick @ Mar 17 2006, 04:08 PM) P... Mar 17 2006, 06:23 PM ddeerrff QUOTE (Shaka @ Mar 16 2006, 04:57 PM) Mar... Mar 17 2006, 04:29 AM djellison <360 Whr's per sol and decreasing quite rap... Mar 17 2006, 04:09 PM mars_armer How sure are we of the 280 Whr "death" n... Mar 17 2006, 06:37 PM helvick QUOTE (mars_armer @ Mar 17 2006, 06:37 PM... Mar 17 2006, 07:21 PM Bob Shaw QUOTE (mars_armer @ Mar 17 2006, 06:37 PM... Mar 17 2006, 11:44 PM Sunspot Was Spirit supposed to drive today?
http://qt.e... Mar 17 2006, 07:08 PM djellison QUOTE (Sunspot @ Mar 17 2006, 07:08 PM) W... Mar 17 2006, 08:29 PM akuo QUOTE (Sunspot @ Mar 17 2006, 07:08 PM) W... Mar 17 2006, 08:40 PM Oersted I think we're all happy that the team was pret... Mar 18 2006, 12:00 AM nprev On the weakly positive side, I hope that the wheel... Mar 18 2006, 12:28 AM marsman In today's press release below, there are a fe... Mar 18 2006, 01:39 AM odave QUOTE (marsman @ Mar 17 2006, 08:39 PM) N... Mar 18 2006, 02:42 AM Steve QUOTE (marsman @ Mar 17 2006, 08:39 PM) N... Mar 18 2006, 02:59 AM |
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