Engine Health Management System for Advanced Diagnostic Monitoring of Gas Turbine Engines

Period of Performance: 11/13/1995 - 11/13/1997


Phase 2 SBIR

Recipient Firm

Stress Technology, Inc.
Rochester, NY 14623
Principal Investigator

Research Topics


A prototype USAF Engine Health Management (EHM) system will be developed and ground tested during this Phase II program. The EHM system, developed in conjunction with Rolls-Royce Inc., will be capable of real-time mechanical diagnostics, aero-thermal performance monitoring, and "engine signature" based life accumulation. For the first time, the integration of artificial intelligence based, real-time diagnosis and advanced life prediction analysis will be brought together in an intelligent engine health monitor. The EHM system will greatly assist the 2-level maintenance concept and prove to be a vital link to the IHPTET initiative. The modular EHM system will consist of four principal operating subsystems, they are the data management, health, diagnostic, and engine life modules. The real-time operation of the four modules will be performed simultaneously within a parallel computing structure. Data transfer among the modules will be accomplished automatically, within a single computing platform. The flexibility of this modular approach will allow for the routine development of an EHM system for any chosen USAF engine. EHM system modules can be developed for any class of engine, with engine specifics being incorporated into the engine diagnostic networks after initial system installation. The prototype EHM system will be ground test verified on the F405 (Adour) engine during accelerated mission testing at Rolls-Royce plc in Bristol, England and during U.S. Navy T45 pass-off testing. At the conclusion of this program, the EHM system will provide the USAF with verified, real-time diagnosis of critical engine components and life usage estimates associated with the F405 (Adour) engine. A Phase III effort will extend the principles demonstrated during this program to include the development and commercialization of a dedicated, flight worthy EHM system for a chosen USAF engine. Engine manufacturers as well as semiconductor and embedded electronic system developers have already expressed interest in teaming with STI to accomplish this.