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ROVER WHEELS: Monitoring changes over time, NOTE: Read back through the thread to avoid repeating misconceptions
DeanM
post May 16 2013, 08:35 AM
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[MOD NOTE: This thread follows on a post by Ed Truthan containing a MAHLI mosaic of MSL wheels taken on sol 275.]

Ed: zooming in on that marvellous underbelly MAHLI montage, there appears to be further (and previously noted) deformation of the wheel surfaces.

Damage is most evident in the view of the front-left wheel inner surface.

Such wear has previously been discussed and concerns allayed.

Nevertheless, the front left wheel surface *appears* to have been punctured.

Attached Image


We've only done 700 meters, and have 7000 more to get to Mt Sharp.....

Given that more odometry has now accumulated, is any (re-)new(ed) concern valid?

DeanM
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bobik
post Dec 8 2013, 05:48 PM
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Why not use tires made of a titanium alloy?
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Posts in this topic
- DeanM   ROVER WHEELS: Monitoring changes over time   May 16 2013, 08:35 AM
- - jamescanvin   No, I wouldn't be concerned. Yes there is a ...   May 16 2013, 10:15 AM
|- - MahFL   Your going to have to regularly reassure us.....it...   May 16 2013, 11:12 AM
|- - djellison   QUOTE (MahFL @ May 16 2013, 03:12 AM) You...   May 16 2013, 02:05 PM
|- - mcaplinger   QUOTE (djellison @ May 16 2013, 07:05 AM)...   May 16 2013, 03:03 PM
- - jmknapp   Isn't the "puncture" merely a glint ...   May 16 2013, 02:56 PM
|- - mcaplinger   QUOTE (jmknapp @ May 16 2013, 07:56 AM) C...   May 16 2013, 03:06 PM
- - fredk   QUOTE (DeanM @ May 16 2013, 08:35 AM) the...   May 16 2013, 03:13 PM
- - Ant103   QUOTE The dents may be reflecting bits of bright s...   May 16 2013, 03:59 PM
|- - djellison   QUOTE (Ant103 @ May 16 2013, 07:59 AM) It...   May 17 2013, 09:36 PM
|- - fredk   QUOTE (djellison @ May 17 2013, 09:36 PM)...   May 18 2013, 03:10 PM
|- - Jimbo1955   QUOTE (djellison @ May 17 2013, 04:36 PM)...   May 18 2013, 09:27 PM
|- - mcaplinger   QUOTE (Jimbo1955 @ May 18 2013, 02:27 PM)...   May 19 2013, 01:00 AM
|- - mcaplinger   Doug has seen the damaged VSTB wheels in person an...   May 19 2013, 01:10 AM
- - fredk   Being in shadow means they couldn't reflect th...   May 16 2013, 05:33 PM
|- - PaulH51   I am sure this wheel debate will roll on for some ...   May 16 2013, 07:56 PM
- - mcaplinger   See slide 32 in http://trs-new.jpl.nasa.gov/dspace...   May 16 2013, 08:02 PM
- - Ant103   Okay Doug, thanks for this very clear explanation   May 17 2013, 10:01 PM
- - djellison   Wonder who took those. And the wheels got a lo...   May 18 2013, 04:04 PM
- - jmknapp   Good thing Mars surface gravity is only 0.38g.   May 18 2013, 08:24 PM
- - testguru   Given the level of damage observed so far on the r...   May 18 2013, 08:57 PM
|- - mcaplinger   QUOTE (testguru @ May 18 2013, 01:57 PM) ...   May 19 2013, 01:08 AM
|- - djellison   QUOTE (testguru @ May 18 2013, 01:57 PM) ...   May 19 2013, 01:15 AM
- - Explorer1   Good thing there's no shortage of soft surface...   May 18 2013, 09:32 PM
- - Bill Harris   The likely failure point will not be on the wheel ...   May 19 2013, 01:46 AM
|- - mcaplinger   QUOTE (Bill Harris @ May 18 2013, 06:46 P...   May 19 2013, 02:18 AM
|- - MahFL   QUOTE (mcaplinger @ May 19 2013, 03:18 AM...   May 20 2013, 11:54 AM
|- - Keatah   The MER and MSL builders got a lot of things right...   Oct 7 2013, 02:33 AM
|- - djellison   QUOTE (Keatah @ Oct 6 2013, 07:33 PM) I a...   Oct 10 2013, 01:32 PM
|- - infocat13   QUOTE (djellison @ Oct 10 2013, 09:32 AM)...   Oct 18 2013, 11:16 PM
- - serpens   Cool design. Wheels are NOT a likely failure mode...   May 19 2013, 04:42 AM
|- - djellison   QUOTE (serpens @ May 18 2013, 08:42 PM) H...   May 19 2013, 05:31 AM
|- - stevesliva   QUOTE (djellison @ May 19 2013, 12:31 AM)...   May 20 2013, 02:12 AM
|- - jasedm   QUOTE (djellison @ May 19 2013, 05:31 AM)...   Dec 8 2013, 07:07 PM
- - elakdawalla   OK, that was pretty funny.   May 20 2013, 03:57 AM
- - djellison   Yup - hats off to that one   May 20 2013, 04:03 AM
- - pospa   One question related to this topic, ... I hope. As...   Oct 7 2013, 08:35 PM
- - Gerald   Sol 411 MAHLI x-eyed stereo showing part of a whee...   Oct 10 2013, 07:35 AM
- - xflare   Another hole http://www.midnightplanets.com/web/M...   Oct 16 2013, 10:48 AM
- - djellison   Go to any aerospace grade machine shop.   Oct 19 2013, 01:42 AM
|- - pospa   Or visit directly Next Intent where they produced ...   Oct 19 2013, 08:24 AM
- - Gerald   Sol 463 MAHLI x-eyed stereo of the left central wh...   Nov 25 2013, 03:21 PM
- - elakdawalla   Wow.   Nov 25 2013, 04:29 PM
|- - walfy   The wheel for the glasses:   Nov 25 2013, 05:13 PM
- - Gerald   Sol 469-471 Update On Curiosity From USGS Scientis...   Nov 28 2013, 12:53 PM
|- - MahFL   Well there you go, if the team were concerned abou...   Nov 28 2013, 04:56 PM
|- - mcaplinger   QUOTE (MahFL @ Nov 28 2013, 09:56 AM) if ...   Nov 28 2013, 05:10 PM
|- - djellison   QUOTE (MahFL @ Nov 28 2013, 08:56 AM) Wel...   Nov 28 2013, 05:18 PM
- - bobik   Are there any papers on MSL wheel design trade-off...   Nov 29 2013, 06:39 PM
|- - mcaplinger   QUOTE (bobik @ Nov 29 2013, 11:39 AM) Are...   Nov 29 2013, 06:59 PM
- - Phil Stooke   One way to look at this is that the cleats really ...   Nov 29 2013, 07:37 PM
- - serpens   So one can posit a scenario where rather than pick...   Nov 29 2013, 09:33 PM
- - Explorer1   Who says MSL has no sample cache...   Nov 29 2013, 09:38 PM
- - bobik   It would be interesting to know what other wheel o...   Nov 30 2013, 08:55 AM
|- - pospa   QUOTE (bobik @ Nov 30 2013, 10:55 AM) It ...   Nov 30 2013, 01:01 PM
|- - djellison   QUOTE (pospa @ Nov 30 2013, 05:01 AM) and...   Nov 30 2013, 08:13 PM
|- - pospa   QUOTE (djellison @ Nov 30 2013, 10:13 PM)...   Nov 30 2013, 10:30 PM
||- - djellison   QUOTE (pospa @ Nov 30 2013, 02:30 PM) we...   Nov 30 2013, 11:47 PM
|- - mcaplinger   QUOTE (djellison @ Nov 30 2013, 01:13 PM)...   Dec 1 2013, 12:13 AM
- - djellison   QUOTE (djellison @ Nov 30 2013, 12:13 PM)...   Dec 1 2013, 02:08 AM
|- - mcaplinger   QUOTE (djellison @ Nov 30 2013, 07:08 PM)...   Dec 1 2013, 03:00 AM
- - Gerald   Sol 472-473 Update On Curiosity From USGS Scientis...   Dec 4 2013, 01:04 PM
|- - paxdan   Yes it can and just such an experiement was done u...   Dec 4 2013, 02:04 PM
|- - dilo   A small question: could the recent wheel status wo...   Dec 4 2013, 02:46 PM
|- - djellison   QUOTE (dilo @ Dec 4 2013, 06:46 AM) A sma...   Dec 4 2013, 03:41 PM
|- - dilo   QUOTE (djellison @ Dec 4 2013, 04:41 PM) ...   Dec 4 2013, 08:43 PM
|- - centsworth_II   QUOTE (dilo @ Dec 4 2013, 03:43 PM) ....i...   Dec 4 2013, 08:58 PM
|- - djellison   QUOTE (dilo @ Dec 4 2013, 12:43 PM) howev...   Dec 4 2013, 10:16 PM
- - Gerald   Thanks a lot! So there is a good chance, that ...   Dec 4 2013, 02:35 PM
|- - mcaplinger   QUOTE (Gerald @ Dec 4 2013, 07:35 AM) we ...   Dec 4 2013, 04:41 PM
- - Phil Stooke   No - 472 was the last drive, so we have not seen a...   Dec 4 2013, 03:12 PM
- - dvandorn   I doubt there is a huge amount of straight scienti...   Dec 4 2013, 09:01 PM
- - serpens   Well said Doug, and both areas of analysis are of ...   Dec 4 2013, 10:00 PM
- - Jimbo1955   What surprises me about the wheel damage isn't...   Dec 7 2013, 06:00 PM
|- - mcaplinger   QUOTE (Jimbo1955 @ Dec 7 2013, 11:00 AM) ...   Dec 7 2013, 06:45 PM
|- - djellison   QUOTE (mcaplinger @ Dec 7 2013, 10:45 AM)...   Dec 7 2013, 07:50 PM
- - nprev   Given the fact that much larger holes were manufac...   Dec 7 2013, 07:28 PM
|- - Jimbo1955   QUOTE (nprev @ Dec 7 2013, 03:28 PM) Give...   Dec 7 2013, 10:33 PM
- - serpens   So why not put this thread to bed.   Dec 7 2013, 09:42 PM
- - djellison   Group therapy for the morbidly pessimistic.   Dec 7 2013, 10:06 PM
- - ngunn   Pictures of the wheels are great, particularly whe...   Dec 7 2013, 10:07 PM
- - Phil Stooke   We get that, but the other holes show that the one...   Dec 7 2013, 10:49 PM
- - bobik   Why not use tires made of a titanium alloy?   Dec 8 2013, 05:48 PM
|- - mcaplinger   QUOTE (bobik @ Dec 8 2013, 10:48 AM) Why ...   Dec 8 2013, 06:17 PM
- - nprev   I think that it's safe to say that the admin/m...   Dec 8 2013, 07:23 PM
- - bobik   I am only asking questions to learn about the engi...   Dec 8 2013, 07:30 PM
- - nprev   Nobody's preventing you from doing so; again, ...   Dec 8 2013, 07:50 PM
- - EdTruthan   These stereo views seemed to go better in this thr...   Dec 8 2013, 08:11 PM
- - jasedm   A quick google search unearthed the following: 80+...   Dec 8 2013, 08:16 PM
- - Gerald   I'd like to see more emphasis on the wheels as...   Dec 8 2013, 08:22 PM
|- - stevesliva   QUOTE (Gerald @ Dec 8 2013, 04:22 PM) The...   Dec 8 2013, 08:58 PM
|- - djellison   QUOTE (Gerald @ Dec 8 2013, 12:22 PM) I...   Dec 9 2013, 02:39 AM
- - Gerald   The very surface will be oxidized. I've mainly...   Dec 8 2013, 09:28 PM
- - serpens   Well you are certainly thinking well outside the b...   Dec 9 2013, 02:08 AM
|- - Gerald   QUOTE (serpens @ Dec 9 2013, 03:08 AM) .....   Dec 9 2013, 11:00 AM
|- - djellison   QUOTE (Gerald @ Dec 9 2013, 03:00 AM) If ...   Dec 9 2013, 04:05 PM
- - fredk   Update on wheel condition and diagnostics.   Dec 20 2013, 07:37 PM
- - jvandriel   One of the wheels on Sol 486. Jan van Driel   Dec 20 2013, 09:40 PM
- - atomoid   little punched-out shred in SOL488 image and the a...   Dec 21 2013, 02:43 AM
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