About three hours, 15 minutes into the spacewalk, Mike Fossum and Ron Garan completed installing the Robotic Refueling Mission (RRM) experiment onto a platform on Dextre, the Special Purpose Dexterous Manipulator.
In the future, the RRM will demonstrate robotic refueling technology and techniques using Dextre, four unique RRM tools and an RRM enclosure filled with refueling components and activity boards. The tests will demonstrate that remote-controlled robots can perform refueling tasks in orbit, using commands sent from controllers on Earth. RRM is expected to reduce costs and risks, and lay the foundation for future robotic servicing missions.