Raytheon Technologies Corporation

United Technologies Corporation

Rtx Corporation

Sheridon Everette Haye

Edward Thomas Rocco

Zaffir A Chaudhry

Allan J Volponi

Gregory S Hagen

Yan Chen

Danbing Seto

Robert H Luppold

Jun Liu

Lichu Zhao

An assembly for a gas turbine engine according to an example of the present disclosure may include at least one rotatable airfoil, at least one vibration sensor operable to detect vibration of the at least one airfoil at one or more rotational frequencies, and a controller operatively coupled to the at least one vibration sensor. The controller may be operable to determine an accretion level associated with accretion of glass on the at least one airfoil in response to comparing vibration of the at least one airfoil at the one or more rotational frequencies to a vibratory pattern associated with accretion of glass. A method of operation is also disclosed.

Accretion detection systems and associated methods for gas turbine engines

An oil debris monitoring sensor includes a multiple of passages within the housing, each of the multiple of passages surrounded by a set of coils to detect a particle. A method for determining a presence of a particle in a system includes a) installing a single sensor in-line with an oil flow path; b) communicating oil through a multiple of passages within the housing of the single sensor; c) detecting a particle through the single sensor; and d) isolating the particle to one of the multiple of passages within the sensor housing.

Multi-passage oil debris monitor to increase detection capability in high oil flow systems

A drive system of a gas turbine engine includes a first drive shaft and a second drive shaft operable to rotate within the gas turbine engine, a first sensor operable to detect rotation of the first drive shaft, a second sensor operable to detect rotation of the second drive shaft, and a processing system coupled to the first sensor and the second sensor. The processing system is operable to determine a timing variation based on output of the first sensor and output of the second sensor, determine a torsional deflection between the first drive shaft and the second drive shaft based on the timing variation, and detect a health status of the drive system based on the torsional deflection.

Gas turbine engine drive system health monitor

A method for actively calculating and monitoring the oil debris monitor phase angle includes sensing a noise from an in-line oil debris monitor sensor in an oil flow path, generating a polar plot of an I and Q channel data from only the noise. Linear regression of noise is then utilized from the I and Q channel data for calculating a slope of regression form the linear regression and converting the slope to a phase angle.

Active oil debris monitor phase angle calculation and monitoring system

A method for determining the presence of a particle while actively calculating and monitoring oil debris monitor phase angle in an oil system including collecting I and Q channel data from an oil debris monitor sensor, performing a fast Fourier transform on the I and Q channel data, extracting a shape from the fast Fourier transform, and determining whether a particle is present from the shape.

Active oil debris monitor particle detection and monitoring system

A method for fault diagnosis of a bearing includes detecting, using an oil debris monitor (ODM) sensor, ODM data corresponding to an amount of debris flowing downstream from the bearing. The method also includes detecting, using a vibration sensor, vibration data corresponding to vibration of the bearing during use. The method also includes determining, by a controller, a vibration stage flag corresponding to a severity of damage of the bearing based on the vibration data. The method also includes determining, by the controller, a severity level of the damage of the bearing based on a combination of the vibration stage flag and the ODM data. The method also includes outputting, by an output device, the severity level.

Integrated vibe/ODM fusion and trending analysis for prognostic health management of engine bearing

An aircraft sensor system includes a first sensor configured to detect a parameter of an aircraft system and a first micro electro-mechanical-system (MEMS) disposed local to a first component within the aircraft system. The first MEMS is communicatively connected to a controller, and is configured to trigger in response to a corresponding parameter exceeding a threshold. The controller is connected to an output of the first sensor and includes a non-transitory memory storing instructions configured to cause the controller to increase a sampling rate of the first sensor to a sampling rate corresponding to the first component for at least a predetermined length of time in response to the first MEMS being triggered.

System for active data acquisition management in a gas turbine engine

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.

Distress detection in dynamically and thermally coupled systems

A method for determining the presence of a particle while actively calculating and monitoring oil debris monitor phase angle in an oil system including collecting I and Q channel data from an oil debris monitor sensor; determining whether the I and Q data is symmetric; processing the I and Q channel data to identify a ferrous and nonferrous signal in response to the I and Q data being symmetric; processing the ferrous and nonferrous signals to determine if a particle is present; determining a symmetry factor from the I and Q channel data in response to the particle being present and confirming that the particle is present from the symmetry factor.

An optical foreign object detection (FOD) system for a gas turbine engine includes a multiple of emitters arranged about an inner periphery of a fan cowl, a multiple or receivers arranged about the inner periphery of the fan cowl, each of the multiple of receivers receiving a beam from one of the multiple of emitters to form a beam matrix; and a control system in communication with the multiple of emitters and the multiple of receivers, the control system operable to detect a minimum sized object in response to breaking at least one beam of the beam matrix.

Detection system for gas turbine engine

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.

Gas turbine engine drive system torsional health monitoring

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.

Vibration induced noise suppression device

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.

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Mansfield, CT, United States of America

Sheridon Everette Haye