NASA Jet Propulsion Laboratory California Institute of Technology JPL HOME EARTH SOLAR SYSTEM STARS & GALAXIES SCIENCE & TECHNOLOGY JPL Email News RSS Mobile Video
Follow this link to skip to the main content
JPL banner - links to JPL and CalTech
left nav graphic Overview Science Technology The Mission People Spotlights Events Multimedia All Mars
Mars for Kids
Mars for Students
Mars for Educators
Mars for Press
+ Mars Home
+ Rovers Home
Features
Spotlight On Mars - Image
Tilt Parameters End First Extrication Drive
November 17, 2009
Read the Spotlight 'Team  Prepares to Uplink Commands to Spirit'

Image and Caption

The preliminary results from the first extrication drive for Spirit on Sol 2088 (Nov. 17, 2009) indicate the rover stopped less than 1 second after it began, sensing more vehicle lateral tilt than permitted.

A tight limit on vehicle roll and pitch of less than 1 degree change was set for this first drive. As the rover began its first move, it sensed that its roll was outside the allowed limit and safely stopped the drive.

The project is starting cautiously, setting initial parameters with very tight limits with the knowledge that these hair triggers may stop the rover frequently. As the project gains confidence with extrication, these limits may be relaxed. From this limited drive the team now has a more accurate measurement of vehicle roll and pitch that will be used for subsequent drive planning. Analysis is continuing. Completion of planning for the next drive will be no sooner than Wednesday, Nov. 18.

The attempt to extract Spirit from the Martian sand trap is expected to take weeks or months, with uncertain probability of success.

#2009-168

Image credit: NASA/JPL-Caltech//USGS

USA.gov
PRIVACY    |     FAQ    |     SITEMAP    |     CREDITS