Using model based systems engineering structures for onboard spacecraft electronics

This paper reviews the MBSE progress of the previous year as we transitioned from a few small pilots to more widespread use in our space systems electronics. Efforts have spanned from the FPGA gateware to full payload electronic boxes with most efforts in the structural and requirements pillars of SysML. This describes the evolution of the structure of our models and the common formatting, colors and naming classes that we have developed. This discusses information hiding challenges of presenting diagrams to non-system engineers who are used to complex but artistic PowerPoint slides versus more regular and often font size challenged SysML diagrams. Methods to pull data out of the models for team usage and document generation will be reviewed. Finally, current training approaches and future direction will be described. MBSE is slowly transforming our systems engineering efforts. As foundations are set, we expect the value to multiply as we maintain one source of truth for a program, reuse models and share data between systems and other disciplines in a much more efficient way.