Study on Mechanical Interface Design and Dynamics Simulation of Three-Jaw Orbital Replacement Unit

The orbital replacement unit and its core technology are the technical basis for the future spacecraft to achieve acceptable on-orbit service and support expansion and upgrading. It can realize on-orbit replacement, replenishment of consumables and other operations, effectively extend the service life of the target spacecraft and maintain the continuity of the mission. In this paper, the mechanical structure of the three-jaw docking interface has been taken as the object and designed the docking interface of the orbital replacement unit which is not mainly dependent on the mechanical arm insertion. The dynamic performance of the docking process was simulated as well. The research work can provide a reference for the design and application of the orbital replacement unit.