Robotics Work Successful, Station Returned to Full Power

Special Purpose Dextrous Manipulator
The International Space Station’s Canadarm2 and Dextre, also known as the Special Purpose Dextrous Manipulator (SPDM), was used to replace a failed Main Bus Switching Unit and restore full power capability to the station.

This morning, Robotics Ground Controllers in Mission Control Houston successfully completed an operation to remove a failed Main Bus Switching Unit-3 and replace it with a spare. The MBSU in question had failed on April 29 and reduced the station’s power supply by about 25%. There were no immediate concerns for the crew or the station. The crew had installed a series of jumpers in Node 1 following the failure to reroute power to experiments and hardware and ensure limited impact to continued station operations. Since the successful replacement, the MBSU was powered up and checked out successfully with all station systems back to nominal power configuration, including redundant power to the Canadarm2 robotic arm.

The completion of the robotics work marks the second time an MBSU was swapped out by means other than a spacewalk. The International Space Station continues to be a critical test bed where NASA is pioneering new methods to explore space, from complex robotic work to refueling spacecraft in flight and developing new robotic systems to assist astronauts on the frontier of space. Technologies like these will be vital as NASA looks to return astronauts to the Moon by 2024.

NASA’s commercial cargo provider SpaceX is targeting 3:11 a.m. EDT on Friday, May 3, for the launch of its 17th resupply mission to the International Space Station. Packed with more than 5,500 pounds of research, crew supplies and hardware, the SpaceX Dragon spacecraft will launch on a Falcon 9 rocket from Space Launch Complex 40 at Cape Canaveral Air Force Station.

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