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Mars Lander Puts Arm and Other Tools to Work

By Design World Staff | May 29, 2008

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TUCSON, Ariz. – NASA’s Mars lander is returning more detailed images from the Martian surface and is now preparing its instruments for science operations.

Phoenix transmitted a 360-degree panorama of its frigid Martian world, freed its nearly 8-foot robotic arm, tested a laser instrument for studying dust and clouds, and transmitted its second weather report on Wednesday evening.

mars lander 5-29.jpg
This panoramic view taken by NASA’s Phoenix Mars Lander shows the sweeping plains of the Martian polar north.


“We’ve imaged the entire landing site, all 360 degrees of it. We see it all,” said Phoenix principal investigator Peter Smith, University of Arizona, Tucson. “You can see the lander in a fish-eye view that goes all the way out to the entire horizon “We are now making plans for where to dig first, and what we’ll save for later.”


“We’re pleased that we successfully unstowed the robotic arm. In fact, this is the first time we have moved the arm in about a year,” said Matthew Robinson of NASA’s Jet Propulsion Laboratory in Pasadena, Calif. The arm deployment brings the Phoenix mission to a significant milestone.

Another milestone for the mission included the activation of the laser instrument called light detection and ranging instrument, or lidar.


“The Canadians are walking on moonbeams. It’s a huge achievement for us,” said Jim Whiteway Canadian Science lead from York University, Toronto. The lidar is a critical component of Phoenix’s weather station, provided by the Canadian Space Agency. The instrument is designed to detect dust, clouds and fog by emitting rapid pulses of green laser-like light into the atmosphere. The light bounces off particles and is reflected back to a telescope.


“One of the main challenges we faced was to deliver the lidar from the test lab in Ottawa, Canada, to Mars while maintaining its alignment within one one-hundredth of a degree,” said Whiteway. “That’s like aiming a laser pointer at a baseball at a distance from home plate to the center field wall, holding that aim steady after launch for a year in space, then landing,” he added.


Lidar data shows dust aloft to a height of 3.5 kilometers (2 miles). The weather at the Phoenix landing site on the second day following landing was sunny with moderate dust, with a high of minus 30 degrees Celsius (minus 22 degrees Fahrenheit) and a low of minus 80 (minus 112 degrees Fahrenheit).


The Phoenix mission is led by Smith at the University of Arizona with project management at JPL and development partnership at Lockheed Martin, Denver. International contributions come from the Canadian Space Agency; the University of Neuchatel, Switzerland; the universities of Copenhagen and Aarhus, Denmark; Max Planck Institute, Germany; and the Finnish Meteorological Institute. For more about Phoenix, visit: http://www.nasa.gov/phoenix .

::Design World::


Filed Under: Aerospace + defense, Data acquisition + DAQ modules, Electronics • electrical, Mechatronics

 

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