NASA 'troubleshooting' transporter for space station's robotic arm [Updated]
by Eric Berger from Ars Technica - All content on (#78PHZ)
Recently, the astronauts on board the International Space Station performed a routine "walk-off" maneuver with the large, 58-foot-long robotic arm attached to the orbiting laboratory.
The robotic arm, known as Canadarm2 because it was supplied by the Canadian Space Agency, is something of a modern engineering miracle-it can effectively move around the exterior of the large space station like an inchworm because both ends are essentially identical.
However, after this particular walk-off maneuver, the robotic arm, along with the mobile transporter that guides it along the main truss of the space station, engineers noted some issues with operations.