[meteorite-list] Spirit Rover Update: No Wheel Stall in Diagnostic Drive

[Ron Baalke]

http://www.jpl.nasa.gov/news/news.cfm?release=2009-179  

No Wheel Stall in Diagnostic Drive
Jet Propsulsion Laboratory
November 25, 2009

On Sol 2095 (Tuesday, Nov. 24), Spirit performed a set of diagnostic
actions related to a stall of the right-rear wheel on the previous
drive, three days earlier. The diagnostics showed a fully functioning
wheel free of obstruction. The rover was commanded forward with 1.5
meters (4.9 feet) of wheel spin.  The rover moved 2.1 millimeters (0.08
inch) forward, 1.1 millimeters (0.04 inch) to the left, and 0.3
millimeters (0.01 inch) down.

The cumulative results from Sols 2088 to 2095 (Nov. 17 to 24) are 8.1
meters (27 feet) of commanded motion, 15.7 millimeters (0.6 inch) of
forward progress, 9.9 millimeters (0.4 inch) of movement to the left,
and 4.8 millimeters (0.2 inch) of sinkage.

The plan for a drive during the long holiday weekend is another two-step
drive, with each step 2.5 meters (8.2 feet) of commanded wheel spin. All
wheels will be straight and run at the same speed. Results of this
commanded drive will be analyzed Monday, Nov. 30.