BEIJING, March 20 -- The robot Dextre has a prime
parking spot at the international space station and should be able to keep it
for at least a few months.
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Spacewalker Rick Linnehan with the earth
in the background works to complete the assembly of the Canadian Space
Agency's two-armed robotic system Dextre during an extravehicular
excursion from the International Space Station in this image from NASA TV
March 15, 2008.(Xinhua/Reuters Photo) Photo
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Astronauts
moved the mechanical hulk to its new perch outside NASA's Destiny lab on Tuesday
night, wrapping up nearly a week of robotic work.
Before they could relocate the robot, astronauts
aboard the linked shuttle Endeavour and space station had to fold up Dextre's
two arms, both of which have seven joints. It was a slow process that took an
hour for each arm. The move itself, on the end of the space station's mechanical
arm, went fairly quickly.
Dextre - a 3.6-meter giant with 3.35-meter arms - was
launched into space in nine pieces aboard a transport bed, or pallet, that
served as the robot-construction zone. Three spacewalks were needed to put the
robot together.
The Canadian Space Agency supplied the US$200
million-plus robot, conceived as an assistant to spacewalking astronauts. It may
be months, or possibly even a year, before the robot is put to the test. That's
how long it will take to check out the robot and allow an appropriate job to
present itself.
Dextre's initial checkout went well, with just one
minor flaw. When the waist joint was commanded to turn, it moved in the wrong
direction, said flight director Kwatsi Alibaruho. Engineers believe the problem
can be remedied easily with software.
(Source: Shanghai Daily/Agencies)