Robonaut 2 set to move freely about space station

Mar 14, 2014 by Elizabeth Howell, Universe Today
Robonaut R2A waving goodbye as Robonaut R2B launches into space aboard STS-133 from the Kennedy Space Center. R2 is the first humanoid robot in space. Credit: Joe Bibby

Legs—yes, legs—are on the manifest for the next SpaceX Dragon flight. The commercial spacecraft is expected to blast off March 16 with appendenges for Robonaut 2 on board, allowing the humanoid to move freely around station. After some initial tests in June will come R2′s first step, marking a new era in human spaceflight.

What's exciting about R2 is not only its ability to take over simple tasks for the astronauts in , but in the long run, to head "outside" to do spacewalks. This would greatly reduce risk to the astronauts, as extravehicular activity is one of the most dangerous things you can do outside (as a spacesuit leak recently reminded us.)

When installed, Robonaut will have a "fully extended leg span" of nine feet (wouldn't we love to see the splits with that). Instead of a foot, each seven-jointed leg will have an "end effector" that is a sort of clamp that can grab on to things for a grip. It's similar to the technology used on the Canadarm robotic arm, and also like Canadarm, there will be a vision system so that controllers know where to grasp.

The robot first arrived on station in February 2011 and (mostly while tied down) has done a roster of activities, such as shake hands with astronaut Dan Burbank in 2012 (a humanoid-human first in space), say hello to the world with sign language, and do functions such as turn knobs and flip switches. During Expedition 34/35 in 2012-13, astronaut Tom Marshburn even made Robonaut 2 catch a free-floating object through teleoperation.

A ground version of NASA’s Robonaut 2 (left) flashes a Star Trek Vulcan salutation along with George Takei, a star of the original series, in 2012. “It was a keen demonstration of Robonaut 2’s manual dexterity. The gesture is difficult for many humans to make,” Takei wrote on Facebook. Credit: NASA/James Blair

Eventually NASA expects to use the robot outside the station, but more upgrades to Robonaut 2′s upper body will be needed first. The robot could then be used as a supplement to spacewalks, which are one of the most dangerous activities that humans do in space.

NASA Expedition 35 astronaut Tom Marshburn (background) performs teleoperation activitites with Robonaut 2 aboard the International Space Station in 2013. Credit: NASA

Closer to Earth, NASA says the technology has applications for items such as exoskeletons being developed to help people with physical disabilities.

Explore further: SpaceX supply run to space station postponed

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