posted on Jan, 9 2012 @ 09:38 AM
Update: January 9, 2012
Everything is going relatively well with the Mars Science Lab (MSL), which is on its way to Mars.
On January 11, it will be making its first engine burn since launch on November 26. This engine burn is the largest planned maneuver on its cruise to
Mars. It's designed to put the MSL on the proper course for Mars.
Oddly enough, when the spacecraft was launched it was intentionally put on a trajectory to MISS Mars. This was because NASA did not want the upper
stage of the launch vehicle (which is also on a similar trajectory) to impact Mars. The upper stage of the launch vehicle can't be sterilized as well
as the probe:
The trajectory resulting from the mission's Nov. 26, 2011, launch intentionally misses Mars to prevent the upper stage of the launch vehicle from
hitting the planet. That upper stage was not cleaned the way the spacecraft itself was to protect Mars from Earth's microbes.
The probe itself is sterilized to keep it from contaminating Mars, and to make sure the science results are "clean" result.
There was an unexpected event on November 29 when a computer reset was triggered by using star-identifying software. NASA engineers are trying to
diagnose the cause, but the spacecraft itself has redundant back-up systems, so right now this does not seem like a mission-limiting event.
Diagnostic work continues in response to the reset triggered by use of star-identifying software on the spacecraft on Nov. 29. In tests at JPL,
that behavior has been reproduced a few times out of thousands of test runs on a duplicate of the spacecraft's computer, but no resets were triggered
during similar testing on another duplicate. The spacecraft itself has redundant main computers. While the spacecraft is operating on the "A side"
computer, engineers are beginning test runs of the star-identifying software on the redundant "B side" computer to check whether it is susceptible to
the same reset behavior.
Here is a link to the story on the engine burn maneuver and the reset issue:
marsprogram.jpl.nasa.gov...
The MSL Curiosity is scheduled to arrive on Mars in 209 days from today. It will land in August. I'll try to keep you updated as to how the burn
maneuver went.
edit on 1/9/2012 by Soylent Green Is People because: (no reason given)