Patents by Inventor Lubomir A. Ribarov

Lubomir A. Ribarov 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).

  • Patent number: 12145734
    Abstract: A hybrid propulsion system can include a turbomachine having a compressor, a combustion chamber, and a compressor turbine. The compressor can be connected to the compressor turbine via a first shaft. The system can include a hybrid drive assembly which can include a power turbine in fluid communication with an outlet of the compressor turbine to be driven by compressor turbine exhaust to drive a second shaft that is disconnected from the first shaft. The hybrid drive assembly can also include an electrical machine mechanically coupled to the second shaft either to convert rotational energy to electrical energy or to convert electrical energy to rotational energy of the second shaft.
    Type: Grant
    Filed: December 28, 2020
    Date of Patent: November 19, 2024
    Assignee: Hamilton Sundstrand Corporation
    Inventors: Leo J. Veilleux, Jr., Lubomir A. Ribarov
  • Patent number: 11879394
    Abstract: In at least one aspect of this disclosure, a shut off valve for an ecology fuel return system can include an inlet for receiving a fluid, an outlet for effusing the fluid, and a valve member configured to move between an open position such that the valve member allows fluid to effuse from the outlet and a closed position such that the valve member prevents fluid from effusing from the outlet. The valve member can include a pressure deflector configured to prevent fluid flow from biasing the valve member toward the closed position.
    Type: Grant
    Filed: October 26, 2021
    Date of Patent: January 23, 2024
    Assignee: Hamilton Sundstrand Corporation
    Inventors: Richard J. Carpenter, Leo J. Veilleux, Jr., Lubomir A. Ribarov
  • Publication number: 20230406515
    Abstract: A hydrogen-cooled environmental control system (ECS) is provided and includes a pressurizing system including an electric compressor that compresses RAM air into pressurized warm RAM air for a cabin and a heat exchanger in which the pressurized warm RAM air is selectively cooled by hydrogen flown from a hydrogen fuel tank toward a combustor in accordance with conditions of the pressurized warm RAM air prior to the pressurized warm RAM air reaching the cabin.
    Type: Application
    Filed: May 17, 2022
    Publication date: December 21, 2023
    Inventors: Leo J. Veilleux, JR., Lubomir A. Ribarov
  • Publication number: 20230358191
    Abstract: An electricity generation and propulsion system of an aircraft is provided. The electricity generation and propulsion system includes a fuselage, a hybrid-electric power generation system operably disposed in the fuselage and a ram air turbine (RAT) device. The RAT device is coupled with the hybrid-electric power generation system and is stowable in the fuselage and deployable to an exterior of the fuselage. The RAT device is operable as a RAT when deployed into an airstream that drives rotations of the RAT from which the hybrid-electric power generation system generates electricity, and the RAT device is operable as a propulsor when deployed and driven by the hybrid-electric power generation system.
    Type: Application
    Filed: May 6, 2022
    Publication date: November 9, 2023
    Inventors: Leo J. Veilleux, JR., Lubomir A. Ribarov
  • Publication number: 20230358166
    Abstract: The present disclosure provides hydrogen energy conversion systems, assemblies and methods. More particularly, the present disclosure provides clean energy hydrogen-powered turbine and emergency hybrid power unit (EHPU) systems, assemblies and methods (e.g., for aircraft or the like). The present disclosure provides for a hydrogen based gas turbine coupled with a hydrogen fuel cell architecture. Both the turbine and the fuel cell (FC) can increase or decrease output. Energy storage batteries or ultra-capacitors can store amounts of emergency peak demand and/or emergency energy. This approach coupled with distributed redundant propulsors creates a safe and highly redundant clean aircraft. The fuel cell can act as emergency power and reduce turbine sizing. The batteries provide peak load capacity and additional emergency power. The fuel cell and gas turbine can keep the battery and/or the supercapacitor fully charged until required.
    Type: Application
    Filed: May 4, 2022
    Publication date: November 9, 2023
    Inventors: Leo J. Veilleux, JR., Lubomir A. Ribarov
  • Patent number: 11619560
    Abstract: A fluid flow arrangement includes a manifold defining a fluid passage. A pressure sensor system is in fluid communication with the fluid passage. The pressure sensor system has a first sensor arranged along a first sense line and a second sensor arranged along a second sense line. The first and second sense lines are in fluid communication with the fluid passage. The first sense line has a first resonant frequency and the second sense line has a second resonant frequency. The second resonant frequency is different than the first resonant frequency.
    Type: Grant
    Filed: October 18, 2019
    Date of Patent: April 4, 2023
    Assignee: Hamilton Sundstrand Corporation
    Inventors: Richard J. Carpenter, Aaron V. Price, Russell P. Rourke, Lubomir A. Ribarov, James J. Kamm, Madi Kalibala, Brian K. Burbank
  • Publication number: 20230017990
    Abstract: A fuel delivery system for a gas turbine engine is disclosed which includes a continuously variable drive assembly having a driving portion operatively associated with a gearbox of the gas turbine and a driven portion operatively associated with a fuel pump of the gas turbine, and a governor for controlling a drive ratio of the drive assembly to vary fuel pump flow performance over a range of engine operating conditions.
    Type: Application
    Filed: August 9, 2022
    Publication date: January 19, 2023
    Applicant: Hamilton Sundstrand Corporation
    Inventors: Richard J. Carpenter, Lubomir A. Ribarov, Brandon T. Kovach, Zachary Allen Ray Le Duc, Aaron F. Rickis, Charles E. Reuter, Michael D. Schelonka, William D. Hodge, Christopher J. Davis
  • Patent number: 11557988
    Abstract: A multi-disk brake system comprises an electrical generator disposed therein. The electrical generator is configured to convert mechanical energy to electrical energy. The mechanical energy may be generated during a braking event of the multi-disk brake system. The electric generator may power various electrical components on the aircraft or store the electrical energy in a capacitor bank. The electric generator may also act as a motor and/or power a landing gear in a motor configuration.
    Type: Grant
    Filed: January 28, 2020
    Date of Patent: January 17, 2023
    Assignee: GOODRICH CORPORATION
    Inventors: Lubomir A. Ribarov, Leo J. Veilleux, Jr.
  • Patent number: 11549914
    Abstract: An air data system includes an air data probe and a surface acoustic wave (SAW) sensor attached to the air data probe for detecting particulate accumulation. The air data probe includes a probe head, a strut connected to the head, and a mounting plate connected to the strut. The probe head has an inlet, an interior surface extending from the inlet, and an exterior surface extending from the inlet.
    Type: Grant
    Filed: December 21, 2020
    Date of Patent: January 10, 2023
    Assignee: Hamilton Sundstrand Corporation
    Inventors: Leo J. Veilleux, Jr., Lubomir Ribarov
  • Patent number: 11519336
    Abstract: A starter-generator module for a gas turbine engine includes an inner stator portion with an armature defining a rotation axis and an outer rotor portion disposed about the rotation axis. The outer rotor portion includes a permanent magnet and a gear teeth member. The permanent magnet is disposed about the rotation axis and the gear teeth member is defined on the outer rotor portion such that the gear teeth member transmits rotational energy to an accessory gearbox in a start mode and receives rotational energy from the accessory gearbox in a generate mode.
    Type: Grant
    Filed: September 10, 2020
    Date of Patent: December 6, 2022
    Assignee: Hamilton Sundstrand Corporation
    Inventors: Jacek F. Gieras, Lubomir A. Ribarov
  • Patent number: 11480105
    Abstract: A thermal management system for a gas turbine engine includes a primary vapor compression system including a primary evaporator defining thermal communication between a primary refrigerant and a flow of fuel to cool the fuel. A boost vapor compression system includes a boost heat exchanger defining thermal communication between the primary refrigerant. A boost refrigerant cools the primary refrigerant and a boost condenser in thermal communication with an air stream cools the boost refrigerant.
    Type: Grant
    Filed: April 8, 2020
    Date of Patent: October 25, 2022
    Assignee: RAYTHEON TECHNOLOGIES CORPORATION
    Inventor: Lubomir A. Ribarov
  • Patent number: 11466621
    Abstract: An adaptive thermal management system for a gas turbine engine includes a heat exchanger transferring heat into a coolant, a temperature sensor measuring a temperature of the coolant, and a sensor assembly that measures a parameter of the coolant during operation of the gas turbine engine. The parameter measured by the sensor assembly is indicative of a capacity of the coolant to accept heat from the hot flow. A control valve governs a flow of coolant into the heat exchanger. A controller adjusts the control valve to communicate coolant to the heat exchanger based on a determined capacity of the coolant to accept heat in view of the measured temperature of the coolant and that the measured parameter of the coolant is within a predefined range.
    Type: Grant
    Filed: March 12, 2020
    Date of Patent: October 11, 2022
    Assignee: RAYTHEON TECHNOLOGIES CORPORATION
    Inventor: Lubomir A. Ribarov
  • Patent number: 11459095
    Abstract: A brake system may comprise a hydraulic brake system or a hybrid brake system. The hydraulic brake system may include an inner axle disposed in an inner axle housing. The inner axle housing may include a working fluid therein. The inner axle may comprise a plurality of paddles extending radially from the inner axle. The working fluid may be pressurized and/or create friction with the plurality of paddles. The pressurized working fluid may impede a free rotation of the plurality of paddles.
    Type: Grant
    Filed: January 28, 2020
    Date of Patent: October 4, 2022
    Assignee: GOODRICH CORPORATION
    Inventors: Leo J. Veilleux, Jr., Lubomir A. Ribarov
  • Patent number: 11448130
    Abstract: A thermal management system for a gas turbine engine includes a heat exchanger including a first coolant passage for a first coolant medium and a second coolant passage for a second coolant medium that is different than the first coolant medium. A first hot flow passage is in thermal communication with the first coolant passage. A second hot flow passage is in thermal communication with the second coolant passage all within a common housing. A first valve controls a flow of a hot medium into at least one of the first hot flow passage or the second hot flow passage. A controller configured to operate the first valve to direct the flow of hot medium into one of the first hot flow passage and the second hot flow passage for transferring thermal energy from the flow of hot medium into one of the first coolant medium and the second coolant medium.
    Type: Grant
    Filed: April 8, 2020
    Date of Patent: September 20, 2022
    Assignee: RAYTHEON TECHNOLOGIES CORPORATION
    Inventor: Lubomir A. Ribarov
  • Patent number: 11391210
    Abstract: A thermal management system for a gas turbine engine includes a cooler including a first portion and a second portion, the first portion for cooling a hot flow with a coolant and the second portion for cooling the coolant with a refrigerant. A vapor compression system circulates the refrigerant through the second portion of the cooler. The vapor compression system is a closed system in communication with at least one heat load in addition to the second portion of the cooler.
    Type: Grant
    Filed: April 8, 2020
    Date of Patent: July 19, 2022
    Assignee: RAYTHEON TECHNOLOGIES CORPORATION
    Inventor: Lubomir A. Ribarov
  • Publication number: 20220204171
    Abstract: A hybrid propulsion system can include a turbomachine having a compressor, a combustion chamber, and a compressor turbine. The compressor can be connected to the compressor turbine via a first shaft. The system can include a hybrid drive assembly which can include a power turbine in fluid communication with an outlet of the compressor turbine to be driven by compressor turbine exhaust to drive a second shaft that is disconnected from the first shaft. The hybrid drive assembly can also include an electrical machine mechanically coupled to the second shaft either to convert rotational energy to electrical energy or to convert electrical energy to rotational energy of the second shaft.
    Type: Application
    Filed: December 28, 2020
    Publication date: June 30, 2022
    Applicant: Hamilton Sundstrand Corporation
    Inventors: Leo J. Veilleux, JR., Lubomir A. Ribarov
  • Publication number: 20220196600
    Abstract: An air data system includes an air data probe and a surface acoustic wave (SAW) sensor attached to the air data probe for detecting particulate accumulation. The air data probe includes a probe head, a strut connected to the head, and a mounting plate connected to the strut. The probe head has an inlet, an interior surface extending from the inlet, and an exterior surface extending from the inlet.
    Type: Application
    Filed: December 21, 2020
    Publication date: June 23, 2022
    Inventors: Leo J. Veilleux, Jr., Lubomir Ribarov
  • Patent number: 11267575
    Abstract: Apparatus and associated methods relate to equalizing wearing of a plurality of electrical power generators of an aircraft. Such equalization is achieved by logging operating conditions of at least a powered subset of the electrical power generators and then comparing of the logged operating conditions of each of the plurality of electrical power generators. Based on the comparison of the logged operating conditions, one of the plurality of electrical power generators for use the aircraft is recommended. A signal indicative of the recommended one of the electrical power generators determined is then generated.
    Type: Grant
    Filed: October 18, 2019
    Date of Patent: March 8, 2022
    Assignee: HAMILTON SUNDSTRAND CORPORATION
    Inventors: Leo J. Veilleux, Jr., Lubomir A. Ribarov
  • Publication number: 20220042459
    Abstract: In at least one aspect of this disclosure, a shut off valve for an ecology fuel return system can include an inlet for receiving a fluid, an outlet for effusing the fluid, and a valve member configured to move between an open position such that the valve member allows fluid to effuse from the outlet and a closed position such that the valve member prevents fluid from effusing from the outlet. The valve member can include a pressure deflector configured to prevent fluid flow from biasing the valve member toward the closed position.
    Type: Application
    Filed: October 26, 2021
    Publication date: February 10, 2022
    Applicant: Hamilton Sundstrand Corporation
    Inventors: Richard J. Carpenter, Leo J. Veilleux, JR., Lubomir A. Ribarov
  • Patent number: 11236682
    Abstract: A fuel pump system for a turbomachine engine can include a boost pump driven by an electric motor and configured to be in fluid communication with a fuel tank, a primary pump configured to be driven by a shaft connected to the turbomachine engine, wherein the primary pump is in fluid communication with the boost pump downstream of the boost pump by a boost branch, a bypass flow branch that connects the boost branch to a downstream branch that is downstream of the primary pump, the downstream branch is in fluid communication with one or more metering valves and/or one or more fuel nozzles, and a bypass valve disposed in the bypass flow branch and/or the downstream branch and configured to selectively directly fluidly communicate the boost branch and the downstream branch.
    Type: Grant
    Filed: February 22, 2018
    Date of Patent: February 1, 2022
    Assignee: Hamilton Sundstrand Corporation
    Inventors: Leo J. Veilleux, Jr., Lubomir A. Ribarov