Robotics

The International Space Station has several robotic arms

The International Space Station has several robotic arms. The main purpose of these arms is to reduce the number of spacewalks. Even though the spacesuits used for spacewalks protect against most of the dangers of space, there is still a high risk performing spacewalks, such as high-energy rays. In addition, spacewalks are time consuming, require a high level of training and are expensive.

The European Robotic Arm (ERA) is one of the robotic arms on board the ISS. It will be used to install and replace solar arrays, inspect and assemble modules and to support and transfer astronauts performing spacewalks.

Although smaller than Canada's “Canadarm2”, ERA is a large robot by any standards – it is about 11.3 m long and weighs 630 kg. It has the capacity of handling up to 8000 kg. The arm is almost like a human arm with joints and the ability to grip, hold and twist – but it runs on wires and motors, and is symmetrical.

The European Robotic Arm (ERA)

On both sides of its “elbow” it has:

The robotic arm can be controlled either from the inside of the Space Station via two computers, or from the outside via a control panel and a computer. Cameras are mounted on the robotic arm to allow the astronauts to monitor and control the movements of the arm.

The Cupola with its circular top-window and six trapeze shaped windows.

The Space Station will have a special control room for robotic activities. The dome-like structure is called Cupola, and the seven windows make it easy for the astronauts to monitor all movements of the robotic arms. The Cupola is one of the European contributions to the Station and will, in addition to the control function, work as an observatory where the astronauts can enjoy the panoramic view.