A case study of the Inductive Monitoring System (IMS) application to C130 aircraft engine starter system health monitoring was presented to Lockheed Martin Aeronautics in Marietta, GA. This study was performed in collaboration with Comprehensive Engineering Management Solutions (CEMSol), a NASA technology partner and IMS licensee, as proof of concept for additional CEMSol-supported aircraft health monitoring system development.
Lockheed provided C130 data sets extracted from sixteen aircraft over a period of four years. Each of these data sets contained 50 to 250 engine start sequences for each of the four engines on the aircraft, for a total of over 3,000 start events. Each data set also contained one or more starter system failures among the normal operations data. The start sequences containing failures were not identified in advance. The data was analyzed with the IMS and the IMS-derived Outlier Detection Via Estimating Clusters (ODVEC) tools to detect starter system failures and precursors to those failures. The analyses effectively detected anomalies and failure precursors in all of the provided data sets. Lockheed will confirm the IMS/ODVEC results via comparison with their C130 maintenance records and, upon favorable review, plans to expand the IMS application to other aircraft subsystems.
BACKGROUND: IMS and ODVEC are system health monitoring tools developed in the Intelligent Systems Division. They use data mining techniques to analyze operations data collected from a system and automatically build a multivariate nominal operations model for that system. New system data can be compared to this model to detect deviations from previous normal system operation, alerting the operator or analyst to system failures or failure precursors. IMS has been deployed in the International Space Station (ISS) flight control room for several years, providing health monitoring for dozens of ISS subsystems. IMS has also been applied to several other NASA aeronautics and space projects, as well as to multiple commercial applications via NASA technology partners.
NASA PROGRAM FUNDING: MS, ODVEC, and supporting software are developed with funding from the JSC Mission Operations Directorate (MOD), ISS, and Space Shuttle Programs.
Contact: David Iverson