General Electric Company

Rajesh Kumar Undipalli

Ravindra Shankar Ganiger

David Raju Yamarthi

Narayanan Payyoor

Kudum Shinde

Tod Robert Steen

Peeyush Pankaj

Ankita Sinha

Venkata Subramanya Sarma Devarakonda

Himanshu Gupta

Manoj Nayani

Praveen Thirumalasetty

Hrishi Ragesh

Aman Srivastava

Dinesh Rakwal

A gas turbine engine includes a fan section having a plurality of fan blades, the fan section configured to generate an airflow through the gas turbine engine, an airflow passage having a core passage and a bypass passage separate from the core passage, a low-speed shaft coupled to and configured to rotate the plurality of fan blades, and a sensor assembly coupled to the gas turbine engine and configured to detect torsional vibration in the low-speed shaft. The sensor assembly includes a plurality of dynamic pressure sensors in the airflow passage. The plurality of dynamic pressure sensors detect a dynamic pressure of the airflow passage that is indicative of the torsional vibration in the low-speed shaft. A damping system is configured to dampen the torsional vibration in the low-speed shaft based on a correlation of a measured torsional vibration and an experimental torsional vibration.

Gas turbine engine having a sensor assembly to detect torsional vibration

Systems and techniques that facilitate predictive core rub diagnostics are provided. A sensor component can collect real-time operation parameters of a gas turbine engine. An analysis component can statistically combine first values, second values, and third values to yield a rub indicator for the engine. The first values can be based on a first comparison of fundamental mode placements of the engine, derived from the real-time operation parameters, and baseline fundamental mode placements. The second values can be based on a second comparison of a vibration spectrum of the engine, derived from the real-time operation parameters, and a baseline vibration spectrum. The third values can be based on a third comparison of the real-time operation parameters of the engine and baseline operation parameters. A classification component can generate a rub classification report indicating presence of rubbing in the engine, based on the rub indicator.

Core rub diagnostics in engine fleet

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Bengaluru, India

Rajesh Kumar Undipalli