NASA has been adopting MBSE vigorously in its Systems Engineering (SE) practices for its Space Missions through the use of the System Markup Language (SysML), to better define a system’s design and operations through a model-centric approach as opposed to a document-centric approach. Fault Management (FM) is an operational subset of SE, and an engineering activity focused on the detection, isolation, diagnosis and response/recovery in the event of faults and anomalies during system operations. It is imperative that while a system is being engineered during its design, adequate FM measures are incorporated in its design so that “fault protection” is an integral part and not an “afterthought” in the project life-cycle. Given the structural and functional complexities of modern space systems, such as those of NASA’s missions for lunar exploration such as the Gateway and other human exploration missions in development, SE processes need to have extensive FM support and analytic capabilities right at the onset of system design, to capture their operational relevance during missions. The key focus of the Systems Engineering Handbook is System Level Analysis across the entire Life Cycle performed within Cost and Schedule constraints.
Qualtech Systems, Inc. (QSI) proposes a TEAMS-FM (Fault Management) “plugin” capability with the SysML modeling environment, called “TEAMS-FM”, that (1) provides a capability to perform FM analysis of a system design in SysML, (2) enables the FM design to be evaluated in an operational context by performing System Health Management (SHM), (3) supports Trade Studies to evaluate the merits of a architecture such as Sensor Placement, Fault Protection, etc. and (4) enables a “System” level assessment and visualization of FM qualities in the SysML Diagrams. Through this effort, TEAMS-FM brings powerful FM capabilities of TEAMS® toolset within the familiar environment of SysML without disrupting the workflow of engineering teams that conduct MBSE.
The proposed technology will facilitate effective MBSE and allow NASA to better plan and execute future Space Missions. It can also operate as part of NASA’s next generation cis-lunar infrastructure, including the Gateway, and deep space human exploration such as the Habitat, allowing NASA to utilize the SE, FM and mission satisfiability information for improved mission execution, safety and success. The Gateway has simulation and vehicle models, relevant to this MBSE effort. Europa is also strong candidate for demonstrating the capabilities.
DoD, USAF, US Navy, Commercial Aviation (SpaceX), NORAD, Space Command ground segments, JSF fleet, Navy platforms, Submarine Commands and BMD systems, UAVs, UMGs and unmanned submersible vehicle markets, manufacturers of DoD and Military’s remotely guided weapons and reconnaissance systems, OEM customers of semiconductor manufacturing and medical diagnostic equipment, are potential applications.