MSL Approach Phase |
MSL Approach Phase |
Jun 23 2012, 05:32 PM
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#1
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Merciless Robot Group: Admin Posts: 8785 Joined: 8-December 05 From: Los Angeles Member No.: 602 |
We're now 45 days from landing, so as of 23 Jun please post all comments related to the end of the transit to Mars here.
Go Curiosity!!!! -------------------- 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.
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Jul 17 2012, 12:40 AM
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Senior Member Group: Members Posts: 1465 Joined: 9-February 04 From: Columbus OH USA Member No.: 13 |
An important item from the press conference was that due to a malfunction on Odyssey, the first indication of a successful landing might not be until several hours after the landing. Odyssey would have been positioned to receive UHF transmissions from MSL and relay them immediately ("bent pipe" telemetry) , but if Odyssey can't be positioned as desired due to the reaction wheel problem, then MRO will store and forward the data 3-4 hours later. Mars Express will be below the horizon at landing, as will Earth. Odyssey could contact MSL on its next orbit about 1-2 hours after landing.
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Jul 17 2012, 01:42 AM
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#3
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Member Group: Members Posts: 252 Joined: 5-May 05 From: Mississippi (USA) Member No.: 379 |
Odyssey could contact MSL on its next orbit about 1-2 hours after landing. That is the way I understood it from the press conference, however a BBC article suggests something different. --- Nasa may miss Curiosity Mars rover's landing signal By Jonathan Amos Science correspondent, BBC News As things stand, Nasa could be waiting on Odyssey to make a late pass of the landing site, perhaps five to 10 minutes after the rover's planned touch down. This (MSL Landing) is projected to be 22:31 PDT 5 August; .....snip... "If Odyssey is not able to be moved and it still remains late, that means it will fly over [Curiosity] after the spacecraft has landed, and we presumably will [then] be able to see transmissions from it. It would be somewhere between 22:35 and 22:40 PDT," explained Pete Theisinger, the rover project manager at Nasa's Jet Propulsion Laboratory in Pasadena, California. --- Personally, I (in the CDT time zone) think I should plan for an all-niter. Jack |
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