QUOTE (dvandorn @ Aug 29 2006, 04:51 AM)
at Overgaard, last time there was an IDD issue, was inappropriately long. I think it's time to be a touch less cautious and a touch more bold.
Just a touch, mind you...
We got the first full filter panorama of the mission, and found THE best evidence for morphology indicative of running water at all. Without that 'caution' - we would not have had either. Frustrating...yes.
Just wondering - how would you propose we investigate Victoria dragging an IDD that's snapped off because we've been a touch more bold?
When it comes to the IDD, I would exercise extreme caution wherever possible. We HAVE to have it intact when we get to Victoria or the journey for the past 500 sols will have been little more than a sight seing tour.
I'll commit the crime of using days not sols - but it will make sense. Sat, Sun and Mon were scheduled, as we all know, all on Friday. The longevity of this mission is sustainable only by using 5 day weeks. So Tuesday is the first possible day when they can command a sequence in the knowledge of the IDD problem.
"If the IDD is unusable"...they don't know yet. Do you? They will hopefully find out in the next 24 hrs. They have scheduled diagnostics at the first possible Opportunity.
"And/or drop the MB onto the wheel scuf "...the last IDD sequence they commanded didn't work. They need to find out why. It may be that we've lost another winding on that motor. It may be that they just had a current limit set too low. We don't know enough at this point to make any decision on what is the next best step.
They're troubleshooting at the first POSSIBLE opportunity, there has been no "Sitting here" - it's just how the scheduling and the IDD fault clashed badly. We've lost 3 sols. That's it. They're being as bold given the timing, as it is humanly possible to do - commanding IDD motion on the very first sol they could after discovering the problem. They could have run some static diagnostics...but they're actually moving a broken arm at the first possible chance. They couldn't BE more bold.
A reality check : the initial MER design specification cited that they would loose 1 sol out of every 3 due to sequencing, communication or other technical issues.
There's conclusion jumping and unjustified criticism in buckets in this thread.
Doug