Assessment of the State-of-the-Art of System-Wide Safety and Assurance Technologies

Since its initiation, the System-wide Safety & Assurance Technologies (SSAT) Project has been focused on developing multidisciplinary tools and techniques that are verified and validated to ensure prevention of loss of property and life in NextGen and enable proactive risk management through predictive methods. To this end, four technical challenges have been listed to help realize the goals of SSAT, namely (i) assurance of flight critical systems, (ii) discovery of precursors to safety incidents, (iii) assuring safe human-systems integration, and (iv) prognostic algorithm design for safety assurance. The objective of this report is to provide an extensive survey of SSAT-related research accomplishments by researchers within and outside NASA to get an understanding of what the state-of-the-art is for technologies enabling each of the four technical challenges. We hope that this report will serve as a good resource for anyone interested in gaining an understanding of the SSAT technical challenges, and also be useful in the future for project planning and resource allocation for related research. NASA/TM—2017-219515 1 Assessment of the State-of-the-Art of System-Wide Safety and Assurance Technologies Indranil Roychoudhury Stinger Ghaffarian Technologies, Inc. Moffett Field, California 94035 Mary S. Reveley National Aeronautics and Space Administration Glenn Research Center Cleveland, Ohio 44135 Nipa Phojanamongkolkij National Aeronautics and Space Administration Langley Research Center Hampton, Virginia 23681 Karen M. Leone Vantage Partners, LLC Brook Park, Ohio 44142