Data-Driven Modeling of Vibrations in Turbofan Engines Under Different Operating Conditions

What is it about?

Vibrations in commercial aircraft engines are of utmost importance as they directly translate to aviation health and safety, and hence are continuously monitored both online and offline for potential abnormalities. Notably, this is of increased interest with the abundance of air transportation in today’s world. However, there is limited understanding of the occurrences of higher vibration in aircraft engines. Vibration engineers often face ambiguity in interpreting these normal that higher vibrations. This can often lead to a lengthy investigative process resulting in higher downtime and increased testbed occupancy, ultimately leading to revenue loss. It is often hypothesized that prior engine running conditions such as shutdown/cooling time between one engine run to another engine run affect the vibration profile. Nonetheless, there exists a gap in literature tying together various historical operational conditions, temperature, pressures, and current operational conditions with the expected vibration in the engine.

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