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Opportunity General Health
Doug M.
post Aug 15 2013, 10:25 AM
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I've been clicking around for a general health status for Opportunity, but haven't been able to find one.


Power -- The solar panels seem to be showing signs of degradation over time but it's not clear how much. NASA reports regularly on power output, tau/opacity and dust levels, but not on the status of the panels themselves. They did clock well over 500 watt-hours as recently as May, so it doesn't look like their performance is a serious issue. As for non-solar power, the radioisotope heaters seem to be fine; they're Pu-238, so they would only have lost about 10% of their power since launch. So the WEB is still toasty.

Motors and joints -- I know we've got one bad wheel motor (which means we spend a lot of time driving backwards) and the bad arm azimuth joint and the separate issue with the arm potentiometer.

Electronics -- There was the flash memory issue earlier this year but I don't know if that was a one-off or a sign of age.

Instruments -- The Mossbauer spectrometer is done because its radioactive cobalt source ran out. MiniTES got dust on its mirror after the big 2007 dust storm and stopped working. AFAICT the other instruments are okay? Pancam, Navcam, Hazcams, and the APXS all seem to be working fine. There was a NASA press release last month that said "Opportunity imaged the Rock Abrasion Tool (RAT) bit to assess remaining bit life", but it didn't say anything about what they saw and I haven't been able to find any more information. Clearly the RAT is still working, at least for now.

What else?


Doug M.

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Posts in this topic
- Doug M.   Opportunity General Health   Aug 15 2013, 10:25 AM
- - fredk   If you mean would the panels still provide the pow...   Aug 15 2013, 02:45 PM
|- - Doug M.   QUOTE (fredk @ Aug 15 2013, 03:45 PM) If ...   Aug 15 2013, 07:39 PM
|- - MoreInput   QUOTE (Doug M. @ Aug 15 2013, 09:39 PM) Y...   Aug 15 2015, 05:43 PM
- - djellison   Note - on the surface, under an atmosphere and, fo...   Aug 15 2013, 08:25 PM
- - fredk   Yeah, a better comparison than the ISS might be th...   Aug 15 2013, 08:44 PM
- - djellison   FWIW - I'd expect that the 'dust factor...   Aug 15 2013, 08:56 PM
- - Aldebaran   (Long term lurker here) It's quite amazing ho...   Dec 30 2013, 11:03 PM
- - pospa   Hi, yesterday was 12th anniversary of Oppy's l...   Jul 8 2015, 08:50 AM
- - craigmcg   Just curious - has anyone created a log of the dec...   Aug 14 2015, 02:52 PM
- - fredk   There are so many things that could go wrong or pa...   Aug 14 2015, 04:05 PM
- - TheAnt   Fredk already covered the question well. IMO opini...   Aug 15 2015, 02:08 PM
- - serpens   One has to give full credit and plaudits to the JP...   Aug 15 2015, 11:13 PM
- - nprev   "Amazing" is not too strong a word at al...   Aug 16 2015, 05:56 AM
- - craigmcg   > Yet even if all instruments and cameras are d...   Aug 17 2015, 11:34 AM
|- - MoreInput   I did not know about a good log for this problems....   Aug 17 2015, 06:22 PM
- - hendric   There's a couple of advantages the MER batteri...   Aug 17 2015, 08:19 PM
- - ddeerrff   Do I remember right that Oppy's wheel motors h...   Jun 3 2017, 02:56 AM
|- - serpens   Yes, both drive and steering motors on Oppy are br...   Jun 3 2017, 07:04 AM
- - RoverDriver   The wear and tear on the brushes is proportional t...   Jun 3 2017, 01:09 PM
|- - peter.neaum   QUOTE (RoverDriver @ Jun 3 2017, 02:09 PM...   Apr 27 2018, 08:02 AM
- - hendric   I envision a ceremony where new rover drivers are ...   Jun 3 2017, 06:16 PM
- - marsophile   Enhanced FHAZ of RF wheel from Sol 5066 (Paralle...   Apr 27 2018, 01:03 AM
- - djellison   If you look at the three subframed Right FHaz imag...   Apr 27 2018, 05:46 AM
|- - marsophile   QUOTE (djellison @ Apr 26 2018, 10:46 PM)...   Apr 28 2018, 05:39 AM
|- - fredk   QUOTE (marsophile @ Apr 28 2018, 06:39 AM...   Apr 29 2018, 02:05 PM
- - stevesliva   "Relatively finite." Are you using induc...   Apr 27 2018, 03:13 PM
|- - peter.neaum   QUOTE (stevesliva @ Apr 27 2018, 03:13 PM...   Apr 27 2018, 09:59 PM
|- - RoverDriver   QUOTE (peter.neaum @ Apr 27 2018, 02:59 P...   Apr 27 2018, 11:18 PM
||- - James Sorenson   QUOTE (RoverDriver @ Apr 27 2018, 03:18 P...   Apr 28 2018, 12:17 AM
||- - RoverDriver   QUOTE (James Sorenson @ Apr 27 2018, 05:1...   Apr 28 2018, 06:46 AM
||- - vjkane   QUOTE (RoverDriver @ Apr 27 2018, 10:46 P...   Apr 28 2018, 07:52 PM
||- - James Sorenson   QUOTE (vjkane @ Apr 28 2018, 12:52 PM) Ma...   Apr 29 2018, 05:50 PM
||- - mcaplinger   QUOTE (James Sorenson @ Apr 29 2018, 09:5...   Apr 29 2018, 08:30 PM
|- - mcaplinger   QUOTE (peter.neaum @ Apr 27 2018, 01:59 P...   Apr 29 2018, 08:35 PM
- - hendric   Looks like some research is being done for low-tem...   May 4 2018, 08:57 PM
- - Explorer1   The meantime... the newest A.J.S. Rayl update show...   May 6 2018, 04:04 PM
- - mcaplinger   QUOTE (Explorer1 @ May 6 2018, 08:04 AM) ...   May 6 2018, 04:44 PM


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