Spacecraft docking dynamic features by using a peripheral mechanism with accumulation of approach kinetic energy

Up to now, several docking systems have been developed under the International Docking System Standard (IDSS) by national space agencies and private companies. Docking mechanisms of these systems are based on different design and control principles. Thus a new peripheral docking mechanism, with more simple kinematics and design than that used in previous APAS docking unit, has been developed by Rocket and Space Corporation Energia. An accumulation of spacecraft approach kinetic energy instead of traditional damping is used in this mechanism. It allows to move forward the docking ring for capture improvement and to ensure slowdown. Main features of spacecraft docking dynamic process with the use of this mechanism are described in this paper.