Nasa's Seven Story Robots Will Have A Tender Touch

One of the biggest challenges in readying NASA's space shuttles for flight is assembling the solid rockets. After each mission, the reusable rocket casings are retrieved from the ocean, refilled with new propellant, and reassembled into 126-foot-tall boosters. Soon, NASA plans to turn to three giant, computer-controlled robots for help with the job. The 70-foot-tall robots will inspect, clean, dry, and line new and refurbished solid-rocket boosters. Despite their size, they will work at tolerances of 50-to-100 thousandths of an inch.

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