Abstract: A sensor for sensing debris in a lubrication flow through a lubrication channel in a gas turbine engine, the sensor including: a housing; external electronics communicating sensed data to a signal processor; internal electronics within the housing, the internal electronics being electronically connected to the external electronics, the internal electronics including a plurality of sensor coils adjacently disposed in a lubrication flow-wise direction; and internal damping material separating the plurality of sensor coils from the housing.

Abstract: According to an aspect, a method includes configuring a predictive system model with a plurality of component models to correspond with a modeled state of a mechanical system. A set of perturbation inputs is applied to one or more of the component models to produce a plurality of prediction results. The prediction results are compared to a targeted mode of the mechanical system. A set of configuration parameters of the mechanical system is captured in combination with one or more of the perturbation inputs that most closely results in the prediction results matching the targeted mode of the mechanical system.

Abstract: A distress detection system includes a data repository operable to collect sensor data from a monitored system. The distress detection system also includes an analysis system with a processing system operable to access a first parameter of a first system of the monitored system from the data repository and access a second parameter of the first system of the monitored system from the data repository. The processing system is also operable to apply fuzzy reasoning rules to evaluate a combination of the first parameter and the second parameter to determine an in-range interaction with respect to a second system of the monitored system as fuzzy metric data points, classify a component of the second system as being in distress based on comparing the fuzzy metric data points to a limit line, and assert a component distress indicator responsive to classifying the component of the second system as being in distress.

Abstract: A drive system of a gas turbine engine includes at least one drive shaft operable to rotate within the gas turbine engine, a phonic wheel coupled to the at least one drive shaft, a speed sensor operable to detect rotation of the phonic wheel indicative of rotation of the at least one drive shaft, and a processing system coupled to the speed sensor. The processing system is operable to detect a phonic wheel pulse train indicative of rotation of the at least one drive shaft via the speed sensor, determine a torsional mode of the at least one drive shaft based on the phonic wheel pulse train, and record one or more trends of the torsional mode indicative of a health status of the drive system.

Abstract: A sensor for sensing debris in a lubrication flow through a lubrication channel in a gas turbine engine, the sensor including: a housing; external electronics communicating sensed data to a signal processor; internal electronics within the housing, the internal electronics being electronically connected to the external electronics, the internal electronics including a plurality of sensor coils adjacently disposed in a lubrication flow-wise direction; and internal damping material separating the plurality of sensor coils from the housing.

Abstract: According to an aspect, a method includes configuring a predictive system model with a plurality of component models to correspond with a modeled state of a mechanical system. A set of perturbation inputs is applied to one or more of the component models to produce a plurality of prediction results. The prediction results are compared to a targeted mode of the mechanical system. A set of configuration parameters of the mechanical system is captured in combination with one or more of the perturbation inputs that most closely results in the prediction results matching the targeted mode of the mechanical system.