Robotic Refueling Mission Resumes After Brief Pause

RRM_demo_illustrationRobotic Refueling Mission (RRM) Updates
Via Canadian Space Agency


Robotic Refueling Mission (RRM) Robotics to Resume on January 17

The Canadian Space Agency (CSA) has cleared the International Space Station’s robotic arm, Canadarm2, to continue work on the Robotic Refueling Mission (RRM) following a short delay to verify software settings in the robotic arm’s control system.

Robotics engineering teams had discovered an intermittent anomaly in the software that controls Canadarm2, which could potentially have caused the system to use the wrong parameters while in motion, a particular concern when the arm must work close to other structures (as is the case with RRM). After detailed analysis, the CSA identified steps that can be taken to ensure Canadarm2’s software selects the right parameters, thereby ensuring it is safe to proceed.

Canadarm2 and Dextre, the International Space Station’s robotic handyman, will resume Day 2 operations of RRM tomorrow. Because Dextre successfully stowed the tertiary cap in the RRM module on Tuesday, the robot’s next step will be to cut two sets of wires on the safety cap. The goal of RRM is to demonstrate how robots could service and refuel satellites to extend their useful lifetime.


Temporary pause in the operations for the Robotic Refueling Mission

The Canadian Space Agency (CSA) yesterday evening requested a temporary pause in the operations for the Robotic Refueling Mission. An intermittent difference in the software that controls of Canadarm2, the International Space Station’s Canadian-built Remote Manipulator System, requires further analysis to ensure safe operations. Canadarm2 and the Special Purpose Dexterous Manipulator, or Dextre, has temporarily been placed in a safe configuration while engineering teams on the ground assess the data. The CSA will provide a status shortly to determine when work can safely resume.