MSL FAQ - The pool of questions |
MSL FAQ - The pool of questions |
Jun 1 2007, 03:11 PM
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Founder Group: Chairman Posts: 14433 Joined: 8-February 04 Member No.: 1 |
Rob Manning and I swopped emails last night - and we think it might make sense to pool all the questions people have about MSL (and specifically MSL's EDL ) into one thread - and then answer as many as make sense either via a Q'n'A in the style of the previous ones I've done with Steve and Jim - or via Rob's typing fingers.
It'll be a few weeks till we sort this out - but submit-away until then Doug |
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Jun 2 2007, 07:53 AM
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Founder Group: Chairman Posts: 14433 Joined: 8-February 04 Member No.: 1 |
There's a few questions that I think I can do a bit of an answer about for now:
Lots of the same question - full scale test of the whole thing. That's not even possible on Earth - that's what makes landing on Mars so hard - you can't practice. You can try and do a chute deployment on Earth using low wind speed at 1000 mbar - similar dynamic pressure to deploying on Mars - but it's not exactly the same. There was a RFP for a large rig to simulate the decent stage from which they would hang a mobility model to test software and the physical process ot touchdown - including slopes. You can test fire engines - you can simulate sloshing or other harmonic issues with pressurised water - but there's no way to simulate the whole thing...you just test systems as best you can - the simulate the system of systems virtually. VKG, MPF, MPL, MER, PHX - none had a full up system test of everything - because you just can't do it here. MARDI movie will be downlinked.....after landing. Product downlink priorities for data to be taken in three years time - that's a bit premature isn't it I'm sure it will be something of a priority from a EPO perspective - but it'll be a big data product so it may take some time. EDL comms will be to MRO and - if it's still around - Odyssey as well I would have thought - the same as Phoenix. And here's the great thing about UHF, MRO and MSL ( and I'm hoping a DESCANO report on this - and the Phoenix one - will happen ) MER2Ody is 128k - or 256k if it's a good pass - typically 10-15 minutes - 50 to 150 Mbits in a pass. MSL2MRO can be up to 2048k - shorter on average than MER passes with Odyssey - but still potentially up to 1000 Mbits or more in a pass. Doug |
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