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MRO in glitch mode
nprev
post Nov 8 2009, 11:17 AM
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The fix sounds reasonable--stretching out the response time to prevent the fault protection system from triggering a reset from what are presumed to be very transient alarms. They're proceeding with extremely prudent caution & diligence, though.

'Desensitizing' an FPS response must be done with great care just in case this transient condition isn't behaving precisely as they think it is based on ground modeling. Gotta be pretty confident that allowing the condition to persist longer won't do real damage (possibly in unexpected ways) before making such a change.


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briv1016
post Nov 8 2009, 12:16 PM
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But is MRO's time better spent optimized for pure science instead of both science and relay?
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djellison
post Nov 8 2009, 03:12 PM
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MRO doing relay is a much much smaller impact on MRO, than Odyssey doing relay is an impact on Odyssey. Relay on Odyssey could take a couple of hours out of every day for downlink. (a 15 minutes 128 kbps pass can take a long time at 33kbps to downlink )

At worst - it's a couple of minutes for MRO.

In terms of total science done - there's less loss by asking MRO to do it. It's a BIT impact on Odysseys downlink budget - it's an accounting error for MRO.

And of course - there's science value IN the relay itself - i.e. the data returned from the rovers.
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briv1016
post Nov 8 2009, 04:38 PM
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It comes down to the value of time on each spacecraft. Have we finally reached a tipping point that "x" amount of time on MRO is less valuable then "x+n" amount of time on Odyssey?
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djellison
post Nov 8 2009, 05:09 PM
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It's the impact for downlink that's massively, the dominant force here. It's a double digit percentage hit on Mars Odyssey's downlink to do MER. It's less than a single digit on MRO.

It's not time - it's data volume.
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briv1016
post Nov 25 2009, 10:25 PM
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Team Plans Uplink of Protective Files

http://marsprogram.jpl.nasa.gov/mro/newsro.../20091124a.html
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djellison
post Dec 8 2009, 08:17 PM
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Via @HiCommander

QUOTE
MRO is out of safe mode. Instruments, including #HiRISE, still safed for a short while longer.
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machi
post Dec 17 2009, 05:01 PM
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MRO is back!
http://www.nasa.gov/mission_pages/MRO/news/mro20091216.html


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mcaplinger
post Dec 23 2009, 10:18 PM
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The MARCI weather reports are back.

http://www.msss.com/msss_images/latest_weather.html


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Disclaimer: This post is based on public information only. Any opinions are my own.
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