PIA13236: New Wheels
 Mission:  Mars Science Laboratory (MSL)
 Spacecraft:  Curiosity
 Product Size:  1904 x 1075 pixels (w x h)
 Produced By:  JPL
 Other  
Information: 
JPL News Release 2010-221
 Full-Res TIFF:  PIA13236.tif (6.149 MB)
 Full-Res JPEG:  PIA13236.jpg (266.6 kB)

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Original Caption Released with Image:

In this picture, engineers are preparing Curiosity's wheels for installation. Six new wheels were installed onto the rover on June 28 and 29, in the Spacecraft Assembly Facility at NASA's Jet Propulsion Laboratory, Pasadena, Calif., where the rover is being assembled.

These wheels are 50 centimeters (20 inches) in diameter, making them larger than the wheels of a car. Each wheel has its own motor, giving the rover independent six-wheel drive. The rover can swerve and turn in place a full 360 degrees. The suspension system is based on the "rocker-bogie" system, which was used on the Spirit and Opportunity rovers and the earlier Pathfinder missions. This system allows the rover can roll over large rocks and dips without tipping over. The rover can also climb steep hills, up to 45 degrees. Curiosity's wheels have "cleats," similar to those soccer players have on their shoes, which provide grip and prevent the rover from slipping while going over rocks or climbing up hills of soft sand.

Curiosity is the centerpiece of NASA's Mars Science Laboratory mission, which is expected to launch in late 2011, and touch down wheels-first in summer 2012.

Image Credit:
NASA/JPL-Caltech

Image Addition Date:
2010-07-07