Patents by Inventor Thomas Klonowski

Thomas Klonowski 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: 11391203
    Abstract: The invention relates to an aircraft propulsion system, comprising a main transmission unit (12) and at least two turbojet engines connected to the main transmission unit (12), respectively a first turbojet engine (14a) and a second turbojet engine (14b), each turbojet engine comprising a free turbine (24a, 24b), characterized in that the first turbojet engine (14a) comprises a heat exchanger (30) configured to recover some of the thermal energy from the exhaust gas at the outlet of the free turbine, and in that the propulsion system comprises at least one computer (28a, 28b) configured to control the two turbojet engines and to limit the acceleration and the deceleration of the first turbojet engine (14a) when neither of the turbojet engines is broken down, in order to limit the reactor power transients at the heat exchanger (30).
    Type: Grant
    Filed: June 7, 2019
    Date of Patent: July 19, 2022
    Assignee: SAFRAN HELICOPTER ENGINES
    Inventors: Olivier Audrey David Lafargue, Thomas Klonowski, Antoine Pascal Moutaux
  • Publication number: 20220204173
    Abstract: An electrical energy supply network of an aircraft equipped with a plurality of electrical loads to be supplied includes at least two generators of a turbogenerator of the aircraft, each suitable for providing an electrical energy source, and at least one stator associated with a rectifier. The stators of the generators are mounted in parallel on at least two distribution buses designed to supply the plurality of electrical loads. The supply network also includes contactors suitable for electrically connecting or disconnecting the distribution buses from each other.
    Type: Application
    Filed: April 23, 2020
    Publication date: June 30, 2022
    Applicant: SAFRAN HELICOPTER ENGINES
    Inventors: Thomas Barraco, Thomas Klonowski, Vincent Poumarede
  • Publication number: 20220185497
    Abstract: Methods for controlling an electrical power supply network for an aircraft, include pre-charging at least one capacitor in a normal operating mode when a gas turbine is available, pre-charging the at least one capacitor in a backup operating mode when the gas turbine is not available, and discharging the at least one capacitor at the end of use of the electrical power supply network when the at least one capacitor is charged.
    Type: Application
    Filed: April 10, 2020
    Publication date: June 16, 2022
    Applicant: SAFRAN HELICOPTER ENGINES
    Inventors: Thomas Barraco, Thomas Klonowski, Vincent Poumarede
  • Publication number: 20220190686
    Abstract: An assembly including a winding and a cooler in contact with conductors of the winding, the cooler including a container forming a heat dissipator and including a phase change material having the ability to absorb a surplus quantity of heat when the conductors of the winding are subject to an increase in their current density and the heat dissipator is composed of at least two hollow parts separate and nestable with one another and intended to house the phase change material.
    Type: Application
    Filed: February 19, 2020
    Publication date: June 16, 2022
    Applicants: SAFRAN, SAFRAN HELICOPTER ENGINES
    Inventors: Sabrina AYAT, Camel SERGHINE, Thomas KLONOWSKI
  • Publication number: 20220177144
    Abstract: A hybrid propulsion unit for an aircraft with multi-rotor rotary wings includes an electrical generator driven by an internal combustion engine, a rectifier configured to convert an AC current sent by the electrical generator into DC current, a DC-AC converter, an electrical network connecting the rectifier to the converter and including a high-voltage DC current bus, electric motors powered by propeller converters coupled to the electric motors, electrical energy storage connected to the electrical network, the electrical storage including at least one primary storage element and at least one secondary storage element.
    Type: Application
    Filed: March 30, 2020
    Publication date: June 9, 2022
    Applicant: SAFRAN HELICOPTER ENGINES
    Inventors: Thomas Klonowski, Thomas Bruno Barraco
  • Publication number: 20220177147
    Abstract: A hybrid propulsion system for a multi-rotor rotary-wing aircraft, including: an internal combustion engine, an electric machine coupled to the internal combustion engine, a rectifier connected to the electric machine, a converter, an electric network connecting the rectifier to the converter, electric motors connected to the converter, rotary-blade assemblies coupled to the electric motors, wherein the system includes: a detector configured to detect a reduction in a demand for electrical power within the system to below a predetermined value, a bypass circuit configured to bypass the electric machine when the detector detects a reduction in the demand for electrical power.
    Type: Application
    Filed: April 10, 2020
    Publication date: June 9, 2022
    Inventors: Thomas KLONOWSKI, Lois Pierre Denis VIVE, Camel SERGHINE
  • Publication number: 20220153423
    Abstract: A hybrid/electric propulsion architecture for a multi-rotor rotary wing aircraft, including an electricity generator driven by an internal combustion engine, and configured to operate in motor mode, a rectifier configured to convert an alternating current delivered by the electricity generator into direct current, an electrical network including a high voltage direct current (HVDC) bus, electrical energy storage means connected to the electrical network, during electrical energy regeneration on the HVDC bus, depending on the state of charge of the storage means: the storage means are configured to recover electrical energy, the storage means and the rectifier are configured to recover electrical energy, and the electricity generator operating in motor mode is configured to recover electrical energy.
    Type: Application
    Filed: February 24, 2020
    Publication date: May 19, 2022
    Inventors: Thomas KLONOWSKI, Thomas Michel Andre Gerard BARRACO, Camel SERGHINE
  • Patent number: 11316394
    Abstract: The invention relates to an electrical machine comprising a stator (1) and a rotor (2) designed to be rotated in relation to each other, said rotor (2) or said stator comprising a plurality of permanent magnets (5), at least one permanent magnet comprising at least one fluid-propagation channel (10) extending longitudinally inside the permanent magnet, the propagation channel comprising a fluid inlet and a fluid outlet, the fluid inlet being bell-mouthed and oriented in a preferential direction of rotation of the permanent magnet.
    Type: Grant
    Filed: November 14, 2018
    Date of Patent: April 26, 2022
    Assignee: SAFRAN HELICOPTER ENGINES
    Inventors: Thomas Klonowski, Camel Serghine, Jean-Luc Charles Gilbert Frealle, Sebastien Combebias, Jean-Julien Camille Vonfelt
  • Publication number: 20220085706
    Abstract: The present invention relates to an electric machine for an aircraft, comprising a stator and a rotor that is rotationally mobile with respect to the stator, the rotor or the stator comprising a plurality of permanent magnets, the machine comprising a device for demagnetising a permanent magnet, suitable for achieving a temporary increase in the temperature of the permanent magnet, in order to limit, during the temporary increase in temperature, an exciting magnetic flux generated by the permanent magnet. The present invention furthermore relates to an assembly comprising an assembly comprising such an electric machine and a hot-fluid source suitable for delivering hot fluid to the demagnetising device of the electric machine. The hot-fluid source may be a gas stream of a turbine engine.
    Type: Application
    Filed: December 19, 2019
    Publication date: March 17, 2022
    Applicant: SAFRAN HELICOPTER ENGINES
    Inventors: Camel SERGHINE, Thomas KLONOWSKI, Loïs Pierre Denis VIVE
  • Patent number: 11264854
    Abstract: An electric machine includes a stator and a rotor configured to be driven in rotation in relation to one another. The rotor includes a plurality of permanent magnets, and the stator further includes a magnetic circuit including poles extending toward the rotor. The machine includes windings of conducting elements around each pole and at least one heat sink arranged inside a conducting element and/or between the conducting elements. The heat sink includes a phase change material.
    Type: Grant
    Filed: May 3, 2018
    Date of Patent: March 1, 2022
    Assignee: SAFRAN HELICOPTER ENGINES
    Inventors: Thomas Klonowski, Camel Serghine
  • Publication number: 20210376677
    Abstract: The invention relates to an electrical machine comprising a stator (1) and a rotor (2) designed to be rotated in relation to each other, said rotor (2) or said stator comprising a plurality of permanent magnets (5), at least one permanent magnet comprising at least one fluid-propagation channel (10) extending longitudinally inside the permanent magnet, the propagation channel comprising a fluid inlet and a fluid outlet, the fluid inlet being bell-mouthed and oriented in a preferential direction of rotation of the permanent magnet.
    Type: Application
    Filed: November 14, 2018
    Publication date: December 2, 2021
    Applicant: SAFRAN HELICOPTER ENGINES
    Inventors: Thomas KLONOWSKI, Camel SERGHINE, Jean-Luc Charles Gilbert FREALLE, Sebastien COMBEBIAS, Jean-Julien Camille VONFELT
  • Publication number: 20210362869
    Abstract: The invention relates to an aircraft power architecture comprising a power transmission gearbox (12), located in a first compartment (30), a gas turbine (14), located in a second compartment (32) comprising a gas generator (18) and a free turbine (22) connected to the power transmission gearbox (12) by a power shaft (26) of the gas turbine (14), and an accessory gearbox (16), the gas turbine (14) being set into the main transmission gearbox (12), characterized in that the gas turbine (14) comprises a first electric machine (38), and in that the accessory gearbox (16) is placed in the first compartment (30) and comprises a second electric machine (42) configured to supply energy to the accessory equipment and to receive electrical energy transmitted via the first electric machine (38).
    Type: Application
    Filed: May 9, 2019
    Publication date: November 25, 2021
    Inventors: Olivier LAFARGUE, Thomas KLONOWSKI
  • Publication number: 20210246827
    Abstract: The invention relates to an aircraft propulsion system, comprising a main transmission unit (12) and at least two turbojet engines connected to the main transmission unit (12), respectively a first turbojet engine (14a) and a second turbojet engine (14b), each turbojet engine comprising a free turbine (24a, 24b), characterized in that the first turbojet engine (14a) comprises a heat exchanger (30) configured to recover some of the thermal energy from the exhaust gas at the outlet of the free turbine, and in that the propulsion system comprises at least one computer (28a, 28b) configured to control the two turbojet engines and to limit the acceleration and the deceleration of the first turbojet engine (14a) when neither of the turbojet engines is broken down, in order to limit the reactor power transients at the heat exchanger (30).
    Type: Application
    Filed: June 7, 2019
    Publication date: August 12, 2021
    Inventors: Olivier Audrey David LAFARQUE, Thomas KLONOWSKI, Antoine Pascal MOUTAUX
  • Patent number: 11085376
    Abstract: The invention concerns an assembly comprising: a fuel supply circuit (15, 15a, 15b) configured to supply fuel to a turbine heat engine, an electronic module (14, 14a, 14b), a power source (13, 13a, 13b) for supplying power to the electronic module (14, 14a, 14b), and a heat exchanger (16, 16a, 16b) positioned to allow a flow of heat from the electronic module (14, 14a, 14b) to the fuel supply circuit (15, 15a, 15b), the assembly being characterised in that the electronic module (14, 14a, 14b) comprises a phase-change material (PCM), configured to change state when the temperature of same reaches a predetermined phase-change temperature (Tf).
    Type: Grant
    Filed: June 12, 2017
    Date of Patent: August 10, 2021
    Assignee: SAFRAN HELICOPTER ENGINES
    Inventors: Thomas Klonowski, Camel Serghine
  • Patent number: 11047312
    Abstract: An electrical generator is housed in an annular cavity between the casing and the propeller shaft of a turboprop, while imposing little or no additional space requirement and with lightweight ancillary equipment. The rotor of the generator is mounted on an autonomous shaft end. A flange of the outer casing is removable in order to access the generator and to enable its easy removal and remounting.
    Type: Grant
    Filed: February 28, 2018
    Date of Patent: June 29, 2021
    Assignee: SAFRAN HELICOPTER ENGINES
    Inventors: Thomas Klonowski, David Cazaux, Olivier Lafargue
  • Publication number: 20210139154
    Abstract: In the field of multi-rotor rotary-wing aircraft a propulsion system for such an aircraft includes a reconfigurable electric network for supplying the electric motors driving the rotors. The system includes: a supply source, a supply bus connected to the supply source, at least four drive units each including an electric motor and its control circuit, and an electrical ring network including: an electrical line which is interrupted at each drive unit and whose ends are connected to the supply bus, and, for each drive unit, a first switch and a second switch that are connected between the control circuit and the electrical line, on either side of the interruption.
    Type: Application
    Filed: March 25, 2019
    Publication date: May 13, 2021
    Inventors: Thomas KLONOWSKI, Thomas BARRACO, Camel SERGHINE
  • Publication number: 20210003079
    Abstract: An electrical generator is housed in an annular cavity between the casing and the propeller shaft of a turboprop, while imposing little or no additional space requirement and with lightweight ancillary equipment. The rotor of the generator is mounted on an autonomous shaft end. A flange of the outer casing is removable in order to access the generator and to enable its easy removal and remounting.
    Type: Application
    Filed: February 28, 2018
    Publication date: January 7, 2021
    Inventors: Thomas KLONOWSKI, David CAZAUX, Olivier LAFARGUE
  • Patent number: 10807724
    Abstract: The electrical machine according to the invention is a dual machine, and comprises a first machine which can be reversed and a second machine functioning through induction between two windings. The second machine can be used for de-icing a propeller, the induction-receiving winding being mounted on the propeller shaft. The first electrical machine can function as an electrical engine to ‘taxi’ the aircraft. In certain embodiments, the winding mounted on the stator is common to the two machines and different magnetic flows are utilised to control them. A separate functioning of the two machines and a very good integration into the aircraft engine, with space-saving and low mass, are possible.
    Type: Grant
    Filed: October 2, 2017
    Date of Patent: October 20, 2020
    Assignee: SAFRAN HELICOPTER ENGINES
    Inventors: Thomas Klonowski, Olivier Lafargue, Antoine Moutaux, Jean-Julien Camille Vonfelt, Bertrand Nogarede
  • Patent number: 10731504
    Abstract: An electric actuator for inlet guide vanes of a gas turbine engine, the electric actuator including a fixed portion secured to a stationary portion of the engine and a movable portion that is mechanically connected to the inlet guide vanes, stationary electromagnets distributed at regular intervals around the periphery of the movable portion and fastened to the fixed portion, and movable electromagnets arranged between the stationary electromagnets, each movable electromagnet being secured on either side to first and second piezoelectric elements, the movable electromagnets and the first and second piezoelectric elements having a degree of freedom of movement relative to the movable portion and having inside faces forming a common line of contact that is tangential to the movable portion.
    Type: Grant
    Filed: August 24, 2017
    Date of Patent: August 4, 2020
    Assignee: SAFRAN HELICOPTER ENGINES
    Inventors: Jean-Julien Camille Vonfelt, Thomas Klonowski, Antoine Moutaux
  • Patent number: 10686358
    Abstract: The invention relates to the field of magnetohydrodynamic generators, and more precisely to such a generator (10) comprising a working fluid flow passage (11) that is defined by a first wall (12) and a second wall (13), an ionizing device (14) for ionizing the working fluid, a pair of arms (15), each connecting together the first and second walls (12, 13) downstream from said ionizing device (14) so as to define, within the flow passage (11), a channel (16) between said arms (15) and said walls (12, 13), said channel (16) being arranged to be traversed by a portion of the working fluid after it has been ionized, a magnet for generating a magnetic field (B) oriented in a direction that is perpendicular to the flow of the working fluid through the channel (16) defined by the pair of arms (15) and said walls (12, 13), and at least one pair of electrodes (17), each of the electrodes (17) in each pair being arranged on a respective side of the channel (16) defined by the pair of arms (15) and said walls (12, 13),
    Type: Grant
    Filed: September 1, 2016
    Date of Patent: June 16, 2020
    Assignee: Safran Helicopter Engines
    Inventors: Camel Serghine, Thomas Klonowski, Stéphane Beddok, Stéphane Richard