Patents by Inventor Jasraj CHAHAL
Jasraj CHAHAL has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
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Patent number: 11852083Abstract: An electronic controller for an engine and a propeller, a control system and related methods are described herein. The control system comprises the controller having a first channel and a second channel independent from and redundant to the first channel. Each channel comprises a control processor configured to receive first engine and propeller parameters and to output, based on the first engine and propeller parameters, at least one engine control command and at least one propeller control command. Each channel also comprises a protection processor configured to receive second engine and propeller parameters and to output, based on the second engine and propeller parameters, at least one engine protection command and at least one propeller protection command. The control system comprises sensors for measuring the parameters of the engine and/or the propeller and effectors configured to control the engine and the propeller.Type: GrantFiled: June 30, 2022Date of Patent: December 26, 2023Assignee: PRATT & WHITNEY CANADA CORP.Inventors: Jasraj Chahal, Brant Duke, Carmine Lisio, Jim R. Jarvo, Giancarlo Zingaro
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Publication number: 20230323790Abstract: A method for calibrating a position sensor of a variable vane assembly for a gas turbine engine includes positioning an actuator member in at least one predetermined position, determining a first measured position of the actuator member in the at least one predetermined position with a first channel of a position sensor, determining a second measured position of the actuator member in the at least one predetermined position with a second channel of a position sensor, determining a measured position difference between the first measured position and the second measured position, and calibrating the second channel of the position sensor by adjusting the second measured position by the measured position difference to determine a second calibrated position.Type: ApplicationFiled: April 12, 2022Publication date: October 12, 2023Inventors: Jasraj Chahal, Philippe Beauchesne-Martel, Sean McCarthy
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Patent number: 11761385Abstract: A method is provided involving a turbine engine. During this method, data is received indicative of twist of a shaft of the turbine engine. The data is monitored over time to identity one or more reversal events while the turbine engine is operating, where each of the reversal events corresponds to a reversal in a value sign of the data. Shaft shear is identified in the shaft based on occurrence of N number of the reversal events.Type: GrantFiled: July 12, 2021Date of Patent: September 19, 2023Assignee: PRATT & WHITNEY CANADA CORP.Inventors: Sean McCarthy, Jasraj Chahal, Philippe Beauchesne-Martel, Roja Tabar
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Publication number: 20230251165Abstract: The method can include monitoring a current value of a rate of reduction of rotation speed of the shaft; providing a threshold value of a rate of reduction of rotation speed of the shaft; and generating a signal indicative of the shaft shear event when the current value exceeds threshold value.Type: ApplicationFiled: February 4, 2022Publication date: August 10, 2023Inventors: Philippe BEAUCHESNE-MARTEL, Jeremie HEBERT, Pramuk FERNANDO, Jasraj CHAHAL
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Patent number: 11691748Abstract: Herein provided are methods and systems for producing reverse thrust in a multi-engine propeller aircraft, comprising: obtaining, at a first engine controller of a first engine of the aircraft, a first power request for the first engine for producing reverse thrust; determining, at the first engine controller, a first blade angle for a first propeller coupled to the first engine; obtaining, at the first engine controller and from a second engine controller of a second engine of the aircraft, a second power request for the second engine and a second blade angle for a second propeller coupled to the second engine; and when the second power request is indicative of a request for producing reverse thrust and when the first and second blade angles are beyond a predetermined threshold, commanding, via the first engine controller, the first engine to produce reverse thrust based on the first power request.Type: GrantFiled: October 15, 2018Date of Patent: July 4, 2023Assignee: PRATT & WHITNEY CANADA CORP.Inventors: Jasraj Chahal, Carmine Lisio, Darragh McGrath, Giancarlo Zingaro
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Patent number: 11619139Abstract: The method can include: monitoring a current value of a rate of reduction of torque of the shaft; providing a threshold value for the rate of reduction of torque of the shaft; and generating a signal indicative of the shaft shear event when the current value exceeds the threshold value.Type: GrantFiled: February 4, 2022Date of Patent: April 4, 2023Assignee: PRATT & WHITNEY CANADA CORP.Inventors: Philippe Beauchesne-Martel, Jeremie Hebert, Pramuk Fernando, Jasraj Chahal
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Publication number: 20230010174Abstract: A method is provided involving a turbine engine. During this method, data is received indicative of twist of a shaft of the turbine engine. The data is monitored over time to identity one or more reversal events while the turbine engine is operating, where each of the reversal events corresponds to a reversal in a value sign of the data. Shaft shear is identified in the shaft based on occurrence of N number of the reversal events.Type: ApplicationFiled: July 12, 2021Publication date: January 12, 2023Inventors: Sean McCarthy, Jasraj Chahal, Philippe Beauchesne-Martel, Roja Tabar
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Publication number: 20220333535Abstract: An electronic controller for an engine and a propeller, a control system and related methods are described herein. The control system comprises the controller having a first channel and a second channel independent from and redundant to the first channel. Each channel comprises a control processor configured to receive first engine and propeller parameters and to output, based on the first engine and propeller parameters, at least one engine control command and at least one propeller control command. Each channel also comprises a protection processor configured to receive second engine and propeller parameters and to output, based on the second engine and propeller parameters, at least one engine protection command and at least one propeller protection command. The control system comprises sensors for measuring the parameters of the engine and/or the propeller and effectors configured to control the engine and the propeller.Type: ApplicationFiled: June 30, 2022Publication date: October 20, 2022Inventors: Jasraj CHAHAL, Brant DUKE, Carmine LISIO, Jim R. JARVO, Giancarlo ZINGARO
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Patent number: 11414175Abstract: Methods and systems for operating an aircraft powerplant comprising an engine coupled to a variable-pitch propeller capable of generating forward and reverse thrust are described herein. A request to enable a mode for automated reverse thrust is received. Reverse thrust conditions are determined to have been met when the aircraft is on-ground, a blade angle of the propeller is below a blade angle threshold and a position of a power lever is at a selected idle region of the power lever. Reverse thrust of the propeller is triggered when the mode for automated reverse thrust is enabled and the reverse thrust conditions have been met.Type: GrantFiled: April 1, 2019Date of Patent: August 16, 2022Assignee: PRATT & WHITNEY CANADA CORP.Inventors: Giancarlo Zingaro, Sean McCarthy, Jasraj Chahal, Benjamin Bregani, Carmine Lisio
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Patent number: 11408357Abstract: An electronic controller for an engine and a propeller, a control system and related methods are described herein. The control system comprises the controller having a first channel and a second channel independent from and redundant to the first channel. Each channel comprises a control processor configured to receive first engine and propeller parameters and to output, based on the first engine and propeller parameters, at least one engine control command and at least one propeller control command. Each channel also comprises a protection processor configured to receive second engine and propeller parameters and to output, based on the second engine and propeller parameters, at least one engine protection command and at least one propeller protection command. The control system comprises sensors for measuring the parameters of the engine and/or the propeller and effectors configured to control the engine and the propeller.Type: GrantFiled: August 20, 2019Date of Patent: August 9, 2022Assignee: PRATT & WHITNEY CANADA CORP.Inventors: Jasraj Chahal, Brant Duke, Carmine Lisio, Jim R. Jarvo, Giancarlo Zingaro
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Patent number: 11377223Abstract: Herein provided are methods and systems for a method for controlling autothrottle of an engine. A digital power request is obtained from an autothrottle controller, the digital power request based on an autothrottle input to the autothrottle controller. A manual input mode for the engine is terminated, the manual input mode based on a second power request obtained from a manual input associated with the engine. An autothrottle mode for the engine is engaged to control the engine based on the digital power request.Type: GrantFiled: October 29, 2018Date of Patent: July 5, 2022Assignee: PRATT & WHITNEY CANADA CORP.Inventors: Giancarlo Zingaro, Carmine Lisio, Jasraj Chahal, Saadi Daftari
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Patent number: 11313286Abstract: An electronic controller for an engine and a propeller, a control system and related methods are described herein. The controller comprises a first channel and a second channel independent from and redundant to the first channel. Each channel having a control processor configured to receive first engine and propeller parameters and to output, based on the first engine and propeller parameters, at least one engine control command comprising instructions for controlling an operation of the engine and at least one propeller control command comprising instructions for controlling an operation of the propeller.Type: GrantFiled: August 20, 2019Date of Patent: April 26, 2022Assignee: PRATT & WHITNEY CANADA CORP.Inventors: Jasraj Chahal, Brant Duke, Carmine Lisio, Jim R. Jarvo, Giancarlo Zingaro
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Patent number: 11002238Abstract: Methods and systems for starting an aircraft propulsion engine are described herein. Operation of the engine is controlled by an engine controller having a first channel and a second channel. An engine start request is received on the second channel while the first channel is inactive. It is determined which one of the first channel and the second channel was used to conduct a last successful engine start. Responsive to determining that the last successful engine start was conducted on the second channel, a predetermined time period is waited to elapse and for the first channel to reinitialize before commanding, via the first channel, an engine start based on the engine start request.Type: GrantFiled: February 13, 2019Date of Patent: May 11, 2021Assignee: PRATT & WHITNEY CANADA CORP.Inventors: Michael Youssef, Alexandre Charest, Giancarlo Zingaro, Jasraj Chahal, Carmine Lisio, Darragh McGrath
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Patent number: 10899433Abstract: A system and method for feathering an aircraft propeller are provided. A first feather solenoid and a second feather solenoid each comprising at least one solenoid coil and a solenoid valve coupled to the actuator and to the at least one solenoid coil are provided. At least one controller is configured to selectively energize and de-energize the at least one solenoid coil. The solenoid valve of the first feather solenoid is configured to be activated when the at least one solenoid coil of the first feather solenoid is energized and the solenoid valve of the second feather solenoid is configured to be activated when the at least one solenoid coil of the second feather solenoid is de-energized. The solenoid valve is configured to, when activated, modulate the supply of hydraulic fluid to an actuator for adjusting a blade pitch of the propeller towards a feather position.Type: GrantFiled: July 10, 2018Date of Patent: January 26, 2021Assignee: PRATT & WHITNEY CANADA CORP.Inventors: Jasraj Chahal, Carmine Lisio, Jim R. Jarvo, Darragh McGrath, Giancarlo Zingaro
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Patent number: 10864980Abstract: A system and method for feathering an aircraft propeller are provided. The aircraft propeller is coupled to an actuator for setting a blade pitch of the propeller. The blade pitch is controlled by modulating a supply of hydraulic fluid to the actuator. At least one feather solenoid is provided that comprises a first solenoid coil, a second solenoid coil, and a solenoid valve coupled to the actuator and to the first and the second solenoid coil. At least one controller is configured to selectively energize and de-energize the first and the second solenoid coil. The solenoid valve is configured to be activated when the first solenoid coil and the second solenoid coil are de-energized and to, when activated, modulate the supply of hydraulic fluid to the actuator for adjusting the blade pitch of the propeller towards a feather position.Type: GrantFiled: July 10, 2018Date of Patent: December 15, 2020Assignee: PRATT & WHITNEY CANADA CORP.Inventors: Jasraj Chahal, Carmine Lisio, Darragh McGrath, Giancarlo Zingaro
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Publication number: 20200362723Abstract: System and method for detecting an uncommanded high thrust (UHT) event in an aircraft. The method comprises enabling a UHT function associated with an engine when an enabling condition has been met. When the UHT function is enabled, the UHT event is detected when a power lever of the aircraft is at a given position, a parameter indicative of engine speed or power is above a first threshold, and a rate of change of the engine speed is above a second threshold. In response to detecting the UHT event, an alert is output to trigger accommodations to the UHT event for the engine.Type: ApplicationFiled: May 13, 2019Publication date: November 19, 2020Inventors: Jasraj CHAHAL, Zachary MOUNIR FATY, Carmine LISIO, Darragh MCGRATH, Giancarlo ZINGARO
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Publication number: 20200324877Abstract: Methods and systems for feathering a propeller are described herein. A solenoid is configured to cause a propeller to feather when the solenoid is energized. An electronic controller is connected to the solenoid through a first electrical connection for energizing the solenoid to feather the propeller. A secondary mechanism is connected to the solenoid through a second electrical connection for energizing the solenoid to feather the propeller. The second electrical connection is independent from the first electrical connection.Type: ApplicationFiled: April 9, 2019Publication date: October 15, 2020Inventors: Jasraj CHAHAL, Carmine LISIO, Darragh MCGRATH, Michael YOUSSEF, Giancarlo ZINGARO
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Publication number: 20200307774Abstract: Methods and systems for operating an aircraft powerplant comprising an engine coupled to a variable-pitch propeller capable of generating forward and reverse thrust are described herein. A request to enable a mode for automated reverse thrust is received. Reverse thrust conditions are determined to have been met when the aircraft is on-ground, a blade angle of the propeller is below a blade angle threshold and a position of a power lever is at a selected idle region of the power lever. Reverse thrust of the propeller is triggered when the mode for automated reverse thrust is enabled and the reverse thrust conditions have been met.Type: ApplicationFiled: April 1, 2019Publication date: October 1, 2020Inventors: Giancarlo ZINGARO, Sean MCCARTHY, Jasraj CHAHAL, Benjamin BREGANI, Carmine LISIO
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Publication number: 20200256304Abstract: Methods and systems for starting an aircraft propulsion engine are described herein. Operation of the engine is controlled by an engine controller having a first channel and a second channel. An engine start request is received on the second channel while the first channel is inactive. It is determined which one of the first channel and the second channel was used to conduct a last successful engine start. Responsive to determining that the last successful engine start was conducted on the second channel, a predetermined time period is waited to elapse and for the first channel to reinitialize before commanding, via the first channel, an engine start based on the engine start request.Type: ApplicationFiled: February 13, 2019Publication date: August 13, 2020Inventors: Michael YOUSSEF, Alexandre CHAREST, Giancarlo ZINGARO, Jasraj CHAHAL, Carmine LISIO, Darragh MCGRATH
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Publication number: 20200232395Abstract: Methods and systems for operating a gas turbine engine coupled to an aircraft propeller are described herein. A request for reverse of the propeller thrust is received from a power lever of the aircraft. A blade angle of the propeller is determined. Reverse thrust of the propeller is inhibited when the blade angle exceeds a threshold. Reverse thrust of the propeller based on the request is enabled when the blade angle is below the threshold.Type: ApplicationFiled: January 17, 2019Publication date: July 23, 2020Inventors: Jasraj CHAHAL, Carmine LISIO, Darragh MCGRATH, Giancarlo ZINGARO