Lyappa arm

The Lyappa (or Ljappa) arm, officially Automatic system of re-docking (Russian: Автоматическая система перестыковки (АСПр), romanized: Avtomaticheskaya sistema perestykovki (ASPr)), was a robotic arm used during the assembly of the Soviet/Russian space station Mir.

Both the Wentian and Mengtian modules of the Tiangong space station carry arms to enable them to manoeuvre around the docking hub of the Tianhe core module.

Lyappa arm is needed to control the pitch of the spacecraft and redocking in a different plane.

In addition to this arm used for docking relocation, the Chinarm on Tianhe module could also be used as a backup.

This electromechanical arm, short and powerful, really resembled the paw of a Siberian bear, hence its name.This article about one or more spacecraft of the Russian Federation is a stub.

Lyappa arm on Mir mock-up at the Gagarin Cosmonaut Training Center .
Indexing Robot Arm on Wentian