A consortium of European companies led by Airbus has developed an autonomous robotic arm set to launch to the ISS, integrating seamlessly with the Russian segment.
The International Space Station currently features two robotic arms: the 17-meter Canadarm2, recently impacted by space debris, and the 10-meter Japanese Experiment Module Remote Manipulator System. These versatile, multi-jointed arms end in identical "hands" that enable station maintenance. Either end can serve as an anchor, allowing the other to perform tasks.
This design provides flexibility across the U.S. segment, but neither arm can access the Russian segment. That changes soon with the July 15 launch of the European Robotic Arm (ERA), developed by Airbus for the European Space Agency (ESA). It will arrive aboard Russia's new Nauka multipurpose module ("science" in Russian).
The ERA consists of two symmetrical sections, each over five meters long, crafted from aluminum and carbon fiber for a lightweight 630 kilograms. Its dual "hands" enable free movement along the station's exterior. Capable of handling up to eight-ton payloads, it can also transport astronauts and cosmonauts during spacewalks for maintenance.
Operators can control it in real time from inside the station or program it for independent operations. An onboard infrared camera allows structural inspections, streaming live footage to the crew.
Nauka marks Russia's first dedicated research module, complete with crew quarters and an airlock for experiments. At around 24 metric tons, it's 20% larger than the Zvezda service module, the station's biggest Russian component.
The launch timing raises questions, as Russia plans to exit the ISS by 2025. Ars Technica's Eric Berger reports NASA officials speculating this could secure additional U.S. funding.
NASA has relied on SpaceX's Crew Dragon for astronaut transport, ending dependence on Russian vehicles. Yet, past seat sales on Soyuz capsules significantly funded Russia's program.
Since the ISS's first elements launched in 1998, U.S. and Russian segments have been interdependent for attitude control, power, and critical systems. NASA suspects Russia may seek extra "maintenance" funds with Nauka's addition.
