Prevention of Compressor Stall on Rolls Royce M250 Engines C20 Series Using Trend Monitoring Analysis

摘要

This paper outlines the analysis of three compressor stall events that could have been prevented based on trend monitoring analysis applied to a Rolls Royce M250 C20-B engine, which was powering an MD 369D Helicopter. The engine data collection provided by a private helicopter operator shows a direct connection between the reduction in recorded torque and further stall events. The continuous analysis of the engine parameters could anticipate inflight component malfunctions by detecting sudden changes in the trend lines of the main parameters of this kind of engines, providing a reliable predictive maintenance method.