The constraints of a document-based engineering approach limit designers to chronicling the development of systems with written descriptions and illustrations that fail to keep pace as the design progresses. A transformational shift from the documentation-based approach is Model-Based Systems Engineering (MBSE), an emerging disciplined innovation for blueprinting architectures of complex systems. With MBSE, the system model is independent of the views a modeler creates for acquisition stakeholders and when the model changes, the modeling tool automatically updates established views to reflect the changes. Further, the effectiveness of MBSE is exhibited when there is a common architecture for establishing the reuse of components across many similar systems. For these reasons, vehicle training simulations seemingly are an ideal target application for MBSE. Several disciplines are involved with the development of common vehicle training simulation components – engineering, physics, image generation, computational systems, instructional design, test, and graphical modeling languages such as Systems Modeling Language (SysML) so participants can communicate in a standardized manner. The paper is a focused exploration of MBSE capabilities for acquiring training simulations. To illustrate a possible approach for modeling vehicle training simulations, a basic architecture with sample stakeholder views is presented complete with use case diagrams for conveying stakeholder expectations, activity diagrams for specifying uses cases, and structure diagrams for depicting system decomposition. Implications are reviewed for using an MBSE approach to manage requirements vice the document-based approach.
Policy, Standards, Management, and Acquisition
Model Based Systems Engineering for Acquiring Vehicle Training Simulations
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