MRO in glitch mode |
  |
MRO in glitch mode |
 Nov 8 2009, 11:17 AM
Post
#16
|
|
 Senior Member  Group: Moderator Posts: 6482 Joined: 8-December 05 From: Los Angeles Member No.: 602  |
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. -------------------- A few will take this knowledge and use this power of a dream realized as a force for change, an impetus for further discovery to make less ancient dreams real.
|
 |
 
|
|
Nov 8 2009, 12:16 PM
Post
#17
|
|
 Member Group: Members Posts: 237 Joined: 18-December 07 From: New York Member No.: 3982 |
But is MRO's time better spent optimized for pure science instead of both science and relay?
|
|
|
|
|
Nov 8 2009, 03:12 PM
Post
#18
|
|
 Administrator Group: Chairman Posts: 13250 Joined: 8-February 04 Member No.: 1 |
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. |
|
|
|
|
Nov 8 2009, 04:38 PM
Post
#19
|
|
|
Member Group: Members Posts: 237 Joined: 18-December 07 From: New York Member No.: 3982 |
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?
|
|
|
|
|
Nov 8 2009, 05:09 PM
Post
#20
|
|
|
Administrator Group: Chairman Posts: 13250 Joined: 8-February 04 Member No.: 1 |
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. |
|
|
|
|
Nov 25 2009, 10:25 PM
Post
#21
|
|
|
Member Group: Members Posts: 237 Joined: 18-December 07 From: New York Member No.: 3982 |
|
|
|
|
|
Dec 8 2009, 08:17 PM
Post
#22
|
|
|
Administrator Group: Chairman Posts: 13250 Joined: 8-February 04 Member No.: 1 |
Via @HiCommander
QUOTE MRO is out of safe mode. Instruments, including #HiRISE, still safed for a short while longer.
|
|
|
|
|
Dec 17 2009, 05:01 PM
Post
#23
|
|
 Member Group: Members Posts: 557 Joined: 27-February 08 From: Heart of Europe Member No.: 4057 |
-------------------- |
|
|
|
|
Dec 23 2009, 10:18 PM
Post
#24
|
|
|
Senior Member Group: Members Posts: 1043 Joined: 13-September 05 Member No.: 497 |
-------------------- Disclaimer: This post is based on public information only. Any opinions are my own.
|
|
|
|
|
|
Lo-Fi Version | Time is now: 26th May 2013 - 05:53 AM |
|
RULES AND GUIDELINES Please read the Forum Rules and Guidelines before posting. IMAGE COPYRIGHT |
OPINIONS AND MODERATION Opinions expressed on UnmannedSpaceflight.com are those of the individual posters and do not necessarily reflect the opinions of UnmannedSpaceflight.com or The Planetary Society. The all-volunteer UnmannedSpaceflight.com moderation team is wholly independent of The Planetary Society. The Planetary Society has no influence over decisions made by the UnmannedSpaceflight.com moderators. |
SUPPORT THE FORUM Unmannedspaceflight.com is a project of the Planetary Society and is funded by donations from visitors and members. Help keep this forum up and running by contributing here. |
|
