Comprehensive Safety Design for Time-critical HTV-X Automated Docking Operations

抄録

We plan to conduct an automated docking demonstration using the HTV-X on-orbit demonstration platform. This is a preliminary technology demonstration to contribute to resupply to Gateway, the manned lunar orbit base. Since docking could cause a catastrophic hazard such as ISS collision in case of failure, comprehensive safety analysis is necessary. Since the HTV-X and the docking system are both complex systems, and they must work properly together, we have adopted STPA, which can comprehensively analyze each other's behavior with guide words. In addition, we also proposed an STPA extensible framework for Multiple Controller problem based on this case study.