Associated Press
Astronauts flexed the giant arms of the International Space Station's new robot for the first time, testing the brakes and maneuvering the appendages into position for a Monday night space walk.
All the brakes on the Canadian-built robot named Dextre passed the test but one in the wrist joint of its left arm. That brake slipped a tad more than engineers wanted, but officials weren't concerned.
"In the long term it's not going to affect the operation of Dextre in any significant way," said Pierre Jean, Canada's acting space station program manager.
Astronauts Richard Linnehan and Robert Behnken planned to spend Monday's space walk adding a tool holster and other accouterments for Dextre, which is designed to assist spacewalking astronauts in maintaining the station.
They were hoping for a less challenging outing than Linnehan and fellow spacewalker Michael Foreman endured over the weekend to install Dextre's 11-foot (3.4-meter) arms. The pair had to use a pry bar and brute force to free one of the arms from the transport bed where it was latched down for launch.
Still, Foreman said his first space walk was one of the most "rewarding, exhilarating and difficult" experiences of his life.
Linnehan said it has been surreal to work around the giant white robot, which to him looks like a prop from a Star Wars movie.
"But it isn't sci-fi, it's reality, and it's happening up here right now," he said.
Dextre—short for dexterous and pronounced like Dexter—may someday take over some of the tougher chores from spacewalkers, like lugging around big replacement parts.
A total of five spacewalks are planned for the shuttle Endeavour's nearly two-week visit to the space station, the most ever performed during a joint shuttle-station flight.
While some of the astronauts prepared for Monday night's outing, other crewmembers stowed equipment that was brought to the station aboard the storage compartment segment of Japan's Kibo lab. That will pave the way for the shuttle Discovery to deliver the one-billion-U.S.-dollar-lab in May.
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