Simulation models as a unified source of knowledge for safety assessments of aerospace systems

摘要

During the operation of aerospace systems, the system's safety is an extremely important aspect. Therefore, safety considerations are a central aspect during the system's development. Several standard techniques like failure mode and effect analysis (FMEA), fault tree analysis (FTA) or reliability block diagrams are used to assess the safety aspects of the system under development. When the system is operational, it is supervised by a failure detection, identification, and recovery (FDIR) system. Unfortunately, even in today's development processes, there is no unified source of knowledge to support these tasks. This may lead to inconsistent results of safety assessments during development or even incorrect results during online supervision of the operational system. This paper describes an approach to use simulation models as a single and consistent source of knowledge for safety assessments during the system's development as well as for online supervision of the system during its operation.