Engine Health Management in Safran Aircraft Engines

Guillaume Bastard, Jérôme Lacaille, Josselin Coupard, and Yacine Stouky
Submission Type: 
Full Paper
phmc_16_014.pdf595.44 KBSeptember 8, 2016 - 5:53am

Engine Health Management (EHM) is the up to date solution that is used by Aircraft Engine Manufacturers in order to maintain an engine operative through a reduction of operational events that impact its availability for end customers.
The aim of EHM systems is to monitor and forecast the health status of an engine based on operational data in order to reduce the interruption of the clients operations and contribute to provide the best affordable maintenance of an engine.
This paper describes the architecture of an EHM system designed to monitor Safran Aircraft Engines products.
The most advanced engine health monitoring functions from Safran Aircraft Engines are integrated into this EHM system. It is designed to provide for the client services, maintenance cost reduction, avoidance of operations interruption and premature engine damage, and assist the aircrafts operator in continued airworthiness. Safran Aircraft Engines also benefits, by better services contracts drive and optimization, engine data and usage collect, and better proximity and individualized service providing to the clients.
The monitoring functions cover the monitoring of engine operational performances, the essential engine sub-systems (for example fuel system, or control system), the engine trim follow-up, and engine transmission system malfunctions.
The Safran Aircraft Engines EHM functions are split into an airborne component and a ground component hosted in the Support & Services management system. They comply with the OSA-CBM architecture: Data Acquisition (DA), Data Management (DM), State Detection (SD), Health Assessment (HA), Prognostics Assessment (PA), and Advisory Generation (AG). The communication between the airborne and the ground components are done through the use of the aircraft’s system. All the data are sent as soon as they are processed in the airborne system and generally before the end of the aircraft mission by wireless communication means (SATCOM, ACARS, 3G, Wi-Fi…). The ground system decodes and stores all these data in a dedicated database and then the EHM functions compute the trend indicators. These indicators are analyzed by the Customer Support Center team, translated into Customers Notification Reports (CNR) and made visible to the client through a web portal service.
At Safran Aircraft Engines, the EHM is designed to be adaptive and scalable in order to have a premium service on jet engine maintenance to ensure a long lasting lifetime of their engines.

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Submission Keywords: 
Engine Health Management
Prognostic Health monitoring
Submission Topic Areas: 
Health management system design and engineering
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