Maintenance of the ISS robotic arm
On Tuesday, June 30, NASA astronauts Chris Williams and Jessica Meir are scheduled to perform a planned extravehicular activity (EVA) to service the large robotic arm, Canadarm2, attached to the International Space Station (ISS). The operation forms part of a routine maintenance program aimed at preserving the station’s long‑term operational capability.
Objectives of the EVA
The crew members will inspect mechanical joints, secure any loose hardware, and replace a malfunctioning hinge that limits the arm’s range of motion. Canadarm2 is essential for docking supply vehicles, repositioning modules, and conducting numerous scientific experiments.
Live broadcast
The EVA will be streamed live via NASA’s official channels, allowing the public to follow the activity in real time. Throughout the walk, the astronauts will maintain continuous radio contact with mission control in Houston to address any issues immediately.
Technical specifics
- Canadarm2 measures roughly 17 meters in length and weighs about 1.8 tonnes.
- Williams and Meir will use specially designed tools to adjust the precise connections.
- The spacewalk is expected to last approximately six hours.
Implications for the ISS
Restoring full functionality to the arm ensures the ISS can continue to receive future modules and resupply missions. A operational Canadarm2 is also a prerequisite for upcoming external experiments and missions that rely on robotic assistance.