WO2024084151A1 - Procédé et module de détection de l'état d'un dispositif d'accouplement, turbomachine et aéronef associés - Google Patents
Procédé et module de détection de l'état d'un dispositif d'accouplement, turbomachine et aéronef associés Download PDFInfo
- Publication number
- WO2024084151A1 WO2024084151A1 PCT/FR2023/051569 FR2023051569W WO2024084151A1 WO 2024084151 A1 WO2024084151 A1 WO 2024084151A1 FR 2023051569 W FR2023051569 W FR 2023051569W WO 2024084151 A1 WO2024084151 A1 WO 2024084151A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- electric machine
- coupling device
- rotation speed
- rotating shaft
- comparison
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Ceased
Links
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01D—NON-POSITIVE DISPLACEMENT MACHINES OR ENGINES, e.g. STEAM TURBINES
- F01D15/00—Adaptations of machines or engines for special use; Combinations of engines with devices driven thereby
- F01D15/10—Adaptations for driving, or combinations with, electric generators
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B64—AIRCRAFT; AVIATION; COSMONAUTICS
- B64D—EQUIPMENT FOR FITTING IN OR TO AIRCRAFT; FLIGHT SUITS; PARACHUTES; ARRANGEMENT OR MOUNTING OF POWER PLANTS OR PROPULSION TRANSMISSIONS IN AIRCRAFT
- B64D35/00—Transmitting power from power plants to propellers or rotors; Arrangements of transmissions
- B64D35/02—Transmitting power from power plants to propellers or rotors; Arrangements of transmissions specially adapted for specific power plants
- B64D35/021—Transmitting power from power plants to propellers or rotors; Arrangements of transmissions specially adapted for specific power plants for electric power plants
- B64D35/022—Transmitting power from power plants to propellers or rotors; Arrangements of transmissions specially adapted for specific power plants for electric power plants of hybrid-electric type
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B64—AIRCRAFT; AVIATION; COSMONAUTICS
- B64D—EQUIPMENT FOR FITTING IN OR TO AIRCRAFT; FLIGHT SUITS; PARACHUTES; ARRANGEMENT OR MOUNTING OF POWER PLANTS OR PROPULSION TRANSMISSIONS IN AIRCRAFT
- B64D27/00—Arrangement or mounting of power plants in aircraft; Aircraft characterised by the type or position of power plants
- B64D27/02—Aircraft characterised by the type or position of power plants
- B64D27/30—Aircraft characterised by electric power plants
- B64D27/33—Hybrid electric aircraft
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B64—AIRCRAFT; AVIATION; COSMONAUTICS
- B64D—EQUIPMENT FOR FITTING IN OR TO AIRCRAFT; FLIGHT SUITS; PARACHUTES; ARRANGEMENT OR MOUNTING OF POWER PLANTS OR PROPULSION TRANSMISSIONS IN AIRCRAFT
- B64D45/00—Aircraft indicators or protectors not otherwise provided for
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01D—NON-POSITIVE DISPLACEMENT MACHINES OR ENGINES, e.g. STEAM TURBINES
- F01D15/00—Adaptations of machines or engines for special use; Combinations of engines with devices driven thereby
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01D—NON-POSITIVE DISPLACEMENT MACHINES OR ENGINES, e.g. STEAM TURBINES
- F01D17/00—Regulating or controlling by varying flow
- F01D17/02—Arrangement of sensing elements
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01D—NON-POSITIVE DISPLACEMENT MACHINES OR ENGINES, e.g. STEAM TURBINES
- F01D17/00—Regulating or controlling by varying flow
- F01D17/02—Arrangement of sensing elements
- F01D17/06—Arrangement of sensing elements responsive to speed
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01D—NON-POSITIVE DISPLACEMENT MACHINES OR ENGINES, e.g. STEAM TURBINES
- F01D17/00—Regulating or controlling by varying flow
- F01D17/02—Arrangement of sensing elements
- F01D17/08—Arrangement of sensing elements responsive to condition of working-fluid, e.g. pressure
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01D—NON-POSITIVE DISPLACEMENT MACHINES OR ENGINES, e.g. STEAM TURBINES
- F01D21/00—Shutting-down of machines or engines, e.g. in emergency; Regulating, controlling, or safety means not otherwise provided for
- F01D21/02—Shutting-down responsive to overspeed
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01D—NON-POSITIVE DISPLACEMENT MACHINES OR ENGINES, e.g. STEAM TURBINES
- F01D25/00—Component parts, details, or accessories, not provided for in, or of interest apart from, other groups
- F01D25/28—Supporting or mounting arrangements, e.g. for turbine casing
- F01D25/285—Temporary support structures, e.g. for testing, assembling, installing, repairing; Assembly methods using such structures
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B64—AIRCRAFT; AVIATION; COSMONAUTICS
- B64D—EQUIPMENT FOR FITTING IN OR TO AIRCRAFT; FLIGHT SUITS; PARACHUTES; ARRANGEMENT OR MOUNTING OF POWER PLANTS OR PROPULSION TRANSMISSIONS IN AIRCRAFT
- B64D45/00—Aircraft indicators or protectors not otherwise provided for
- B64D2045/0085—Devices for aircraft health monitoring, e.g. monitoring flutter or vibration
Definitions
- TITLE Method and module for detecting the state of a coupling device, turbomachine and associated aircraft
- the invention relates to the detection of the operating state of a coupling device connecting two shafts together.
- the invention relates more particularly to a module for controlling the operation of the coupling device, a turbomachine comprising a coupling device and such a module, an aircraft comprising such a turbomachine and a method for controlling the operation of the coupling device.
- An aircraft is generally equipped with a turbomachine comprising at least one rotating shaft, at least one gas turbine, at least one compressor and a combustion chamber.
- the turbomachine may include an electric machine, for example with permanent magnets.
- the current generated by the electromotive force causes heating of the loop in which the current flows, which is likely to cause a fire on board the aircraft.
- the coupling device In order to guarantee a high level of availability and operational reliability of the coupling device, it is necessary to periodically check its operation to ensure that during a disconnection command, the coupling device separates the drive shaft and the rotor shaft. In particular, during a disconnection instruction following the detection of a breakdown of the electrical machine, it is necessary to have confirmation of the disconnection of the coupling device. It is therefore necessary to have a method of adaptive verification of the operating state of the coupling device.
- the present invention aims to overcome all or part of these drawbacks.
- the subject of the present invention is a method for controlling the operation of a coupling device for an aircraft turbomachine, the turbomachine comprising a rotating shaft and an electrical machine, the coupling device being configured to connect a rotor shaft of the electric machine with the rotating shaft and having two operating states, a coupled state so as to secure the rotor shaft and the rotating shaft and a decoupled state so as to separate the rotor shaft and the rotating shaft, the method comprising the following steps: determining a control state of the coupling device; determination of the rotation speed of the electrical machine; determination of the rotation speed of the rotating shaft; a first comparison of the rotation speed of the electric machine determined with a temporal evolution profile of the rotation speed of the electric machine determined from the rotation speed of the rotary shaft and the control state of the coupling device, the first comparison being implemented to determine an operating deviation; a second comparison of the operating deviation with a detection threshold; And according to the result of the second comparison step, an identification of the existence or absence of a failure of the coupling device; the second comparison step compris
- Determining the value of the detection threshold as a function of the control parameter, the operating deviation and the rotation speed of the electric machine makes it possible to take into account the conditions of use of the turbomachine in order to improve detection. of a failure of the coupling device.
- control parameter is chosen from the exterior temperature, the altitude of the aircraft and a parameter representative of a type of failure of the electrical machine.
- the first comparison step comprises a preliminary step of determining a chart of temporal evolution profiles of the rotation speed of the electric machine as a function of the rotation speed of the rotating shaft and the state of control of the coupling device.
- the second comparison step comprises the calculation of the gradient of the operating deviation and a step of calculating the gradient of the temporal evolution profile prior to the second comparison step, the value of the detection threshold being determined from the control parameter, the gradient of the operating deviation, and the gradient of the rotational speed of the determined electrical machine.
- the method comprises a step of delaying the result of the second comparison step.
- the method comprises, prior to the step of determining the rotation speed of the electric machine, controlling the electric machine in engine mode when the turbomachine is stopped.
- the method includes blocking the rotation of the rotating shaft when the electric machine operates in motor mode.
- the present invention also relates to a module for controlling the operation of a coupling device for an aircraft turbomachine, the turbomachine comprising a rotary shaft and an electrical machine, the coupling device being configured to connect a rotor shaft of the electric machine to the rotating shaft and having two operating states, a coupled state so as to secure the rotor shaft and the rotating shaft and an uncoupled state so as to separate the rotor shaft and the rotating shaft, the module comprising: first determination means configured to determine a control state of the coupling device; second determination means configured to determine the rotation speed of the electric machine, third determination means configured to determine the rotation speed of the rotating shaft; first comparison means configured to compare the rotation speed of the electric machine to a temporal evolution profile of the rotation speed of the electric machine determined from the rotation speed of the rotating shaft and the state for controlling the coupling device, the first comparison means being configured to determine an operating deviation; second comparison means configured to compare the operating deviation with a detection threshold; and means
- the present invention also relates to a turbomachine for an aircraft comprising a rotary shaft, an electric machine, and a coupling device configured to connect a rotor shaft of the electric machine to the rotary shaft and having two operating states, one coupled state so as to secure the rotor shaft and the rotating shaft and an uncoupled state so as to separate the rotor shaft and the rotating shaft, the turbomachine comprising a control module as defined above.
- the subject of the present invention is an aircraft comprising a turbomachine as defined above.
- FIG 1 schematically illustrates an aircraft according to the invention
- FIG 2 schematically illustrates a control module according to the invention
- FIG 3 schematically illustrates a method for controlling the operation of a coupling device of an aircraft turbomachine according to the invention.
- Figure 1 schematically represents an aircraft 2 comprising a turbomachine 4, the aircraft 2 being for example an airplane, a helicopter or an airplane with vertical takeoffs and landings.
- the turbomachine 4 comprises at least one rotating shaft, here a rotating shaft 6 on which a fan 8, a compressor 10, a combustion chamber 12 and a turbine 14 are mounted.
- the turbomachine 4 comprises an electric machine 16 and a coupling device 18 connecting the rotor shaft of the electric machine 16 to the rotary shaft 6, for example via a gearbox having a predetermined transmission ratio.
- the coupling device 18 can, however, directly connect the rotor shaft of the electric machine 16 to the rotating shaft 6.
- the electric machine 16 comprises for example a synchronous machine with permanent magnets associated with a power electronics converter or an electromagnet machine.
- the electric machine 16 includes a rotor shaft (not shown).
- the electric machine 16 has a wound rotor.
- the coupling device 18 comprises two operating states, namely a so-called “coupled” state in which the rotor shaft and the rotating shaft 6 are joined and a so-called “decoupled” state in which the rotor shaft and the rotating shaft 6 are separated.
- the turbomachine 4 further comprises a control device 20 capable of controlling the coupling device 18 so that the coupling device 18 is in a coupled state or an uncoupled state.
- the electrical machine 16 comprises a diagnostic sensor 22.
- the diagnostic sensor 22 can be a temperature sensor capable of detecting overheating of the electrical machine 16, a force sensor capable of detecting a bearing failure of the electrical machine 16, an electrical sensor capable of detecting a short circuit of the electrical machine 16, a pressure sensor or an oil level sensor.
- the diagnostic sensor 22 can be considered as a set of different sensors chosen from the temperature sensor, the force sensor, the pressure sensor, the oil level sensor and the electrical sensor for example.
- the turbomachine 4 comprises a temperature sensor 24 capable of measuring the temperature outside the turbomachine 4 and an altitude sensor 26 capable of measuring the altitude at which the turbomachine 4 is located.
- the coupling device 18 is controlled by a control module 28.
- This control module 28 comprises, as illustrated in Figure 2, first means 30 for determining the control state of the coupling device 18, second determination means 32 capable of determining the speed of rotation of the electric machine 16, third determination means 34 capable of determining the speed of rotation of the rotary shaft 6.
- the first determination means 30 are for example electronically connected to the control device 20.
- the second determination means 32 comprise for example a rotation speed sensor capable of measuring the rotation speed of the rotor shaft of the electric machine 16.
- the third determination means 34 comprise for example a rotation speed sensor capable of measuring the rotation speed of the rotary shaft 6.
- the control module 28 further comprises first comparison means 36 configured to compare the rotation speed of the electrical machine 16 with a temporal evolution profile of the rotation speed of the electrical machine 16 determined from the speed of rotation of the rotary shaft 6 and the control state of the coupling device 18.
- the first comparison means 36 are thus configured to determine an operating deviation.
- first comparison means 36 may comprise a software architecture intended to implement a comparison algorithm.
- Such first comparison means 36 can be in the form of logic circuits forming a comparator for example.
- Second comparison means 38 for example in the form of a comparator or a software architecture integrating a second comparison algorithm, ensure the comparison between the operating deviation and a detection threshold.
- the second comparison means 38 determine the value of the detection threshold from at least one control parameter P, the operating deviation and the rotation speed of the electric machine 16.
- the control module 28 comprises means for determining a failure 40, for example software means, configured to identify the existence or absence of a failure of the device coupling 18 according to the result delivered by the second comparison means 38. They are electronically connected to an indicator light or to an alarm system, which may be audible, of the aircraft 2 to warn an operator of the failure.
- the means for determining a failure 40 are able to stop the turbomachine 4 in the event of detection of a failure of the change of state of the coupling device 18, the electric machine 16 no longer rotating when the turbomachine 4 is stopped.
- Figure 3 schematically represents a method for controlling the operation of the coupling device 18.
- combustion chamber 12 generates hot gases driving the turbine 14.
- the first determination means 30 and the control device 20 determine a control state of the coupling device 18.
- the control state of the device coupling device 18 is delivered in the form of a control instruction in the coupled state or in the decoupled state of the coupling device 18.
- a rotation speed sensor of the second determination means 32 measures the rotation speed of the rotor shaft of the electric machine 16.
- the rotation speed of the electric machine 16 is for example recorded in a memory of the second determination means 32.
- the rotation speed of the rotating shaft 6 is determined.
- a rotation speed sensor of the third determination means 34 measures the rotation speed of the rotating shaft 6.
- the rotation speed of the measured rotating shaft 6 is for example recorded in a memory of the third determination means 34.
- Steps 42, 44 and 46 can be carried out simultaneously or successively.
- the first comparison means 36 then compare the rotation speed of the electric machine 16 to a temporal evolution profile of the rotation speed of the electric machine 16 determined from the rotation speed of the rotating shaft 6 and the control state of the coupling device 18 to determine an operating deviation (step 48).
- the operating difference is for example equal to the difference between the rotation speed of the electric machine 16 and the temporal evolution profile.
- This difference can be an instantaneous difference or a sum of the difference between the rotation speed of the determined electric machine 16 and the temporal evolution profile over a predetermined duration.
- the temporal evolution profile includes the evolution of the rotation speed of the rotating shaft 6 when the coupling device 18 is in a coupled state or the evolution of the rotation speed of the rotating shaft 6 when the coupling device 18 is in an uncoupled state. It is obtained for example from a model of the coupling device 18 operating reliably or for example from a technical sheet of the electrical machine 16.
- the temporal evolution profile is extracted from a chart of temporal evolution profiles of the rotation speed of the electric machine 16.
- the chart is determined prior to the first comparison step as a function of the rotation speed of the rotary shaft 6 and the control state of the coupling device 18.
- the chart of temporal evolution profiles makes it possible to quickly determine the temporal evolution profile used during the first comparison step 48.
- the second comparison means 38 compare the operating deviation to a detection threshold.
- the detection threshold is variable and is determined from a control parameter P, the operating deviation and the rotation speed of the electric machine 16.
- the control parameter P includes for example the temperature outside the aircraft 2 measured by the temperature sensor 24, the altitude of the aircraft 2 measured by the altitude sensor 26.
- the exterior temperature of the aircraft 2 makes it possible to determine the viscosity of the oil of the electrical machine 16 and/or the viscosity of the oil of the turbomachine 4.
- the electric machine 16 When the viscosity of the cooling oil of the electric machine 16 is high, the electric machine 16 has greater inertia. When the viscosity of the oil of the turbomachine 4 is high and the coupling device 18 is in a coupled state, the electric machine 16 has greater inertia.
- the control parameter P may include a parameter representative of a type of failure of the electrical machine 16.
- the second comparison means 38 modify the value of the threshold to take into account the change in behavior of the electrical machine 16 as a result of the overheating.
- the second comparison means 38 modify the value of the threshold to take into account the change in behavior of the electrical machine 16 following the failure of the bearing.
- the second comparison means 38 modify the value of the threshold to take into account the change in behavior of the electrical machine 16.
- the second comparison means 38 modify the value of the threshold to take into account the change in behavior of the electrical machine 16.
- the parameter P can include several quantities among the external temperature of the aircraft 2, the altitude of the aircraft 2 and the parameter representative of a type of failure.
- the method comprises calculating the gradient (V) of the operating deviation and a step of calculating the gradient of the temporal evolution profile prior to the second comparison step 50, the value of the detection threshold being determined at from the control parameter P, the gradient of the operating deviation, and the gradient of the temporal evolution profile of the rotation speed of the electric machine 16.
- a failure of the coupling device 18 can be detected (step 52). If, for example, the operating deviation is greater than the variable detection threshold, then the coupling device 18 is considered to be faulty. If the operating deviation is less than the detection threshold, then the coupling device 18 is considered to be functional.
- the result delivered by the second comparison means 38 is stored in a memory for a predetermined duration and steps 42, 44, 46, 48 and 50 are repeated, then the result delivered by the second comparison means 38 is compared to the result stored in memory. If the two results are identical and representative of a failure, the means for determining a failure 40 signal the failure. Otherwise, the failure determination means 40 signal the absence of failure.
- the control method is for example implemented following a change of state of the coupling device 18 to decouple the electrical machine 16 following a breakdown of the electrical machine 16, or when switching on carrying out an operational test of the coupling device 18 or to ensure that the coupling device 18 is still in the operating state controlled by the control device 20.
- the method begins with a step 56 of controlling the electric machine 16 in motor mode so that the electric machine 16 uses electrical power to generate mechanical rotational power.
- control device 20 controls the electric machine 16 in motor mode so that the electric machine 16 generates mechanical power sufficient to rotate the rotor shaft of the electric machine 16, but insufficient to rotate the rotating shaft 6.
- Steps 42, 44 and 46 described above are then carried out.
- the temporal evolution profile includes the rotation speed of the decoupled electric machine 16.
- a propeller brake is for example activated to prevent the rotation of the rotary shaft 6.
- the blocking step 58 also makes it possible to prevent an incorrect assessment of the operating state of the coupling device 18 when the rotary shaft 6 is rotated by the wind "windmilling" in English.
- Adjusting the value of the detection threshold according to the control parameter P, the operating deviation and the rotation speed of the electric machine 16 makes it possible to take into account the conditions of use of the turbomachine 4 in order to improve the detection of a failure of the coupling device 18.
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Aviation & Aerospace Engineering (AREA)
- Control Of Positive-Displacement Air Blowers (AREA)
- Control Of Electric Motors In General (AREA)
Abstract
Description
Claims
Priority Applications (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202380074222.5A CN120077191A (zh) | 2022-10-20 | 2023-10-10 | 用于检测联接装置的状态的方法和模块、以及相关联的涡轮机和飞行器 |
| US19/121,796 US20260109470A1 (en) | 2022-10-20 | 2023-10-10 | Method and module for detecting the state of a coupling device, and associated turbine engine and aircraft |
| EP23793447.6A EP4605637A1 (fr) | 2022-10-20 | 2023-10-10 | Procédé et module de détection de l'état d'un dispositif d'accouplement, turbomachine et aéronef associés |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FRFR2210868 | 2022-10-20 | ||
| FR2210868A FR3141208A1 (fr) | 2022-10-20 | 2022-10-20 | Procédé et module de détection de l’état d’un dispositif d’accouplement, turbomachine et aéronef associés |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| WO2024084151A1 true WO2024084151A1 (fr) | 2024-04-25 |
Family
ID=84369662
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| PCT/FR2023/051569 Ceased WO2024084151A1 (fr) | 2022-10-20 | 2023-10-10 | Procédé et module de détection de l'état d'un dispositif d'accouplement, turbomachine et aéronef associés |
Country Status (5)
| Country | Link |
|---|---|
| US (1) | US20260109470A1 (fr) |
| EP (1) | EP4605637A1 (fr) |
| CN (1) | CN120077191A (fr) |
| FR (1) | FR3141208A1 (fr) |
| WO (1) | WO2024084151A1 (fr) |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR3099789A1 (fr) * | 2019-08-05 | 2021-02-12 | Safran Aircraft Engines | Procédé de détection de pannes d’un système de régulation et de protection contre la survitesse pour turbomachine |
| US20210179282A1 (en) * | 2019-12-12 | 2021-06-17 | Rolls-Royce Plc | Aircraft hybrid propulsion system |
| US20220063825A1 (en) * | 2020-08-31 | 2022-03-03 | General Electric Company | Hybrid electric aircraft engine |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US10822101B2 (en) * | 2017-07-21 | 2020-11-03 | General Electric Company | Vertical takeoff and landing aircraft having a forward thrust propulsor |
| JP7057760B2 (ja) * | 2019-01-18 | 2022-04-20 | 株式会社日立インダストリアルプロダクツ | 回転電機の異常診断システム |
| US12571360B2 (en) * | 2021-04-14 | 2026-03-10 | General Electric Deutschland Holding Gmbh | Three-stream gas turbine engine with embedded electric machine |
| US12344389B2 (en) * | 2021-07-09 | 2025-07-01 | Rtx Corporation | Electric machines for aircraft engine fault detection |
-
2022
- 2022-10-20 FR FR2210868A patent/FR3141208A1/fr active Pending
-
2023
- 2023-10-10 EP EP23793447.6A patent/EP4605637A1/fr active Pending
- 2023-10-10 CN CN202380074222.5A patent/CN120077191A/zh active Pending
- 2023-10-10 US US19/121,796 patent/US20260109470A1/en active Pending
- 2023-10-10 WO PCT/FR2023/051569 patent/WO2024084151A1/fr not_active Ceased
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR3099789A1 (fr) * | 2019-08-05 | 2021-02-12 | Safran Aircraft Engines | Procédé de détection de pannes d’un système de régulation et de protection contre la survitesse pour turbomachine |
| US20210179282A1 (en) * | 2019-12-12 | 2021-06-17 | Rolls-Royce Plc | Aircraft hybrid propulsion system |
| US20220063825A1 (en) * | 2020-08-31 | 2022-03-03 | General Electric Company | Hybrid electric aircraft engine |
Also Published As
| Publication number | Publication date |
|---|---|
| FR3141208A1 (fr) | 2024-04-26 |
| CN120077191A (zh) | 2025-05-30 |
| EP4605637A1 (fr) | 2025-08-27 |
| US20260109470A1 (en) | 2026-04-23 |
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