Model-Based Systems Engineering (MBSE) is becoming the de-facto methodology for creating Systems Engineering (SE) artefacts for today and tomorrow’s products and services. To ensure successful development of these products and services, their complete lifecycle and operating environment has to be taken into account.
Safety, Reliability and Security are important aspects of any system, and are increasingly being integrated into the development process of a system’s architecture, in both discrete and iterative manners. However, Systems Modelling Language (SysML), as a modelling language for creating MBSE architectures, does not have any elements that allow the creation of these analyses in the standard language model.
This presents how Safety, Reliability, and Security, can be incorporated in the development of a SysML based MBSE architecture, with the help of the Risk Analysis Modelling Language (RAAML) standard managed by the Object Management Group (OMG). It explores the creation and incorporation of safety and cybersecurity artefacts such as Failure Mode and Effect Analysis (FMEA), Fault Tree Analysis (FTA), Hazard Assessment by Risk Analysis (HARA) and Threat Analysis and Risk Assessment (TARA). These artefacts are in compliance with safety and security standards such as ISO26262/21434, and fully traceable to pre-determined requirements or emergent features of the system architecture.