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Shape-memory alloy tracks enable Mars rover to travel.(Metals)
Advanced Materials & Processes, August, 2003
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A robotic micro-rover designed to travel the surface of Mars is said to move on tracks made of Nitinol (nickel-titanium) shape memory alloy. Scheduled to travel to Mars around the year 2010, the vehicle will weigh only 30 kg, and will be powered by sunlight. Its mission is to drill beneath the surface to search for microbes.
The two single-loop tracks are similar to those on a military tank, but they, have no bogey wheels and no links. According to Dr. Alex Ellery of Kingston University, London, England, "When distorted in any way, the ...
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