Several key areas of improvement in effect design, development, verification, and validation of fault management processes have been identified in NASA’s Fault Management Handbook. The majority of these guidelines are focused on making the modeling tools more user friendly and reducing the modeling cost and time, as well as enhancing the analytic capabilities.

The ability to detect, diagnose, and respond to faults and anomalies in a timely and cost-effective fashion is a major concern in space missions. Several of the recent mission programs have encountered major cost overruns and schedule slips during test and verification of fault management objectives. These cost and time overruns could be attributed to lack of transparency and lack of availability of a collaborative platform for information sharing early on in the development cycle.

The overall target of this project is towards better utilization of TEAMS® (Testability Engineering and Mainten ance System) in NASA’s Fault Manage ment (FM) initiative through enhancement of its capabilities. It specifically addresses the key requirement of reducing the cost and time of diagnostic model development, maintenance, and analyses. Key focus is on efficient library implementation of modeling constructs, automation, and enhancement of analyses.

The major emphasis of this project is to reduce the cost and time required for TEAMS Model Development, primarily focusing on introducing capabilities for reuse of modeling elements for productivity improvements. It also will enhance analytic capabilities by introducing a Batch Analysis capability along with options for interfacing with applications to manipulate and export the information/ results/reports for post-analysis, evaluation, and model validation purposes. Finally, it will improve the Failure Modes, Effects, and Criticality Analysis (FMECA) Process by introducing capabilities in TEAMS Designer for ensuring consistency and coverage of FMECA-related aspects of a design. Integration of missions and phases with all relevant analysis will be a major element in this task.

Because capabilities planned to be introduced through this effort enhance both design-phase and post-design-phase fault management-related utility of TEAMS, utilization in a range of space missions and applications is anticipated. In addition to NASA applications, the capabilities will make TEAMS a worthy candidate for providing decision support for fault management diagnostics and operations for systems on military aircraft, surface ships, submarines, and even modern ground-fighting vehicles. Addi tion ally, nascent commercial space systems, civilian aircraft and maritime systems, transportation, power generation, and distribution equipment are potential areas for commercial application.

This work was done by Sudipto Ghoshal and Deepak Haste of Qualtech Systems for Marshall Space Flight Center. For more information, contact Ronald C. Darty, Licensing Executive in the MSFC Technology Transfer Office, at This email address is being protected from spambots. You need JavaScript enabled to view it.. Refer to MFS-33304-1.


NASA Tech Briefs Magazine

This article first appeared in the April, 2016 issue of NASA Tech Briefs Magazine.

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