A DIAGNOSTIC DEMONSTRATOR: A PLATFORM FOR THE EVALUATION OF REAL TIME DIAGNOSTIC DATA DEDICATED TO SPACE ENGINES

摘要

Compared to automotive or aircraft engines, space vehicle engines are produced in much smaller quantities, whereas their complexity is very often higher due to the non-standard propellants they use and power they provide. These aspects have a direct impact on the development process of such systems, making it complex, long and expensive.rnNowadays, the space industry is facing commercial challenges where the requirements in terms of time-to-market and costs are continuously reduced. These industries must therefore adapt their development methodologies to meet these requirements. The implementation of Prognostics and Health Management (PHM) techniques at the earliest stage of a new engine development is one of the key aspects considered by the French Space Agency (CNES) to improve the competitiveness of the engine manufacturers by providing more reliable, cost effective and market adapted products. In the frame of CNES R&T program in collaboration with SNECMA, Vibro-Meter has developed an affordable platform dedicated to the development and deployment of advanced prognostic and diagnostic functions on space vehicle engines. This platform will permit a better understanding of the failure modes and Physics of Failure (PoF) of the engine under test and will speed-up the development of such engines by implementing real-time engine failure detection and decreasing the need for post-test analyses.rnThis paper provides details on the key requirements considered for the development of the DIAgnostic DEMonstrator Health Monitoring System (DIADEM HMS), its main characteristics and some performance and operational results obtained with typical PHM algorithms. Future works and a roadmap to the development of space-graded Engine Health Monitoring System are also provided.