WO2022180327A1 - Procede et dispositif de generation d'alarme pour la surveillance d'un filtre a huile dans un aeronef - Google Patents
Procede et dispositif de generation d'alarme pour la surveillance d'un filtre a huile dans un aeronef Download PDFInfo
- Publication number
- WO2022180327A1 WO2022180327A1 PCT/FR2022/050292 FR2022050292W WO2022180327A1 WO 2022180327 A1 WO2022180327 A1 WO 2022180327A1 FR 2022050292 W FR2022050292 W FR 2022050292W WO 2022180327 A1 WO2022180327 A1 WO 2022180327A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- alarm
- filter
- temperature
- oil
- aircraft
- Prior art date
Links
- 238000000034 method Methods 0.000 title claims abstract description 41
- 238000012544 monitoring process Methods 0.000 title description 3
- CMFIWMWBTZQTQH-IDTAVKCVSA-N 9-[(2r,3r,4s,5s)-3,4-dihydroxy-5-(2-methylpropylsulfanylmethyl)oxolan-2-yl]-3h-purin-6-one Chemical compound O[C@@H]1[C@H](O)[C@@H](CSCC(C)C)O[C@H]1N1C(NC=NC2=O)=C2N=C1 CMFIWMWBTZQTQH-IDTAVKCVSA-N 0.000 claims abstract description 9
- 230000006870 function Effects 0.000 claims description 33
- 239000002245 particle Substances 0.000 claims description 16
- 239000003344 environmental pollutant Substances 0.000 claims description 15
- 231100000719 pollutant Toxicity 0.000 claims description 15
- 238000012546 transfer Methods 0.000 claims description 14
- 238000004590 computer program Methods 0.000 claims description 11
- 230000008569 process Effects 0.000 claims description 3
- 239000003921 oil Substances 0.000 description 88
- 238000005259 measurement Methods 0.000 description 8
- 230000035699 permeability Effects 0.000 description 6
- 230000000875 corresponding effect Effects 0.000 description 5
- 230000001960 triggered effect Effects 0.000 description 5
- 238000004891 communication Methods 0.000 description 4
- 238000013461 design Methods 0.000 description 4
- 238000006467 substitution reaction Methods 0.000 description 4
- 238000001914 filtration Methods 0.000 description 3
- 238000004364 calculation method Methods 0.000 description 2
- 239000010705 motor oil Substances 0.000 description 2
- 230000003287 optical effect Effects 0.000 description 2
- 230000004044 response Effects 0.000 description 2
- 230000006399 behavior Effects 0.000 description 1
- 230000033228 biological regulation Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 230000002596 correlated effect Effects 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 238000004377 microelectronic Methods 0.000 description 1
- 239000011148 porous material Substances 0.000 description 1
- 238000011144 upstream manufacturing Methods 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D35/00—Filtering devices having features not specifically covered by groups B01D24/00 - B01D33/00, or for applications not specifically covered by groups B01D24/00 - B01D33/00; Auxiliary devices for filtration; Filter housing constructions
- B01D35/14—Safety devices specially adapted for filtration; Devices for indicating clogging
- B01D35/143—Filter condition indicators
- B01D35/1435—Filter condition indicators with alarm means
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02C—GAS-TURBINE PLANTS; AIR INTAKES FOR JET-PROPULSION PLANTS; CONTROLLING FUEL SUPPLY IN AIR-BREATHING JET-PROPULSION PLANTS
- F02C7/00—Features, components parts, details or accessories, not provided for in, or of interest apart form groups F02C1/00 - F02C6/00; Air intakes for jet-propulsion plants
- F02C7/06—Arrangements of bearings; Lubricating
-
- 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
- F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
- F05D—INDEXING SCHEME FOR ASPECTS RELATING TO NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES, GAS-TURBINES OR JET-PROPULSION PLANTS
- F05D2260/00—Function
- F05D2260/80—Diagnostics
Definitions
- the present invention relates to the general field of aeronautics.
- Such a filter captures the pollutant particles present in the oil thanks to a filtering element made of a porous material. This capture of the particles leads to a change in the permeability of the material which results, under constant operating conditions (e.g. at constant flow and viscosity of the oil), by an increase in the differential pressure at the level of the filter.
- Figure 1 illustrates a typical behavior of evolution of the differential pressure DP at the level of an oil filter as a function of the mass m of pollutant particles contained in the filter. This phenomenon, called clogging, increases the resistance of the filter to the passage of oil and increases its pressure drops. This may take more or less time depending on the exposure of the filter to particulate pollution.
- the first alarm is raised when the differential pressure DP exceeds a first alarm threshold SIBi corresponding to the critical mass mc-i; and a second alarm can be raised when the differential pressure DP exceeds a second alarm threshold SIB 2 corresponding to the critical mass mc 2 .
- the eminent bypass alarm thresholds SIB are lower than the effective bypass threshold SEB.
- FIG. 2 illustrates, for example, the response of an aircraft filter in take-off regime on a hot day and on a cold day for an engine regime RM d .
- the curves in FIG. 2 are examples of filter permeability curves for this engine speed RM d .
- the differential pressure DP at the level of the oil filter is substantially twice as great on a cold day, as on a hot day.
- the ambient temperature is likely to vary greatly, for example if the aircraft takes off from a hot country to land in a cold country.
- the SIB threshold is set relatively high enough not to trigger an alarm too early on a cold day, there is a risk of not triggering an alarm on a hot day.
- the invention relates to an alarm mechanism which does not have these drawbacks.
- the present invention responds in particular to this need by proposing a method for generating an alarm in an aircraft, this method being implemented in an alarm generation device on board the aircraft and comprising:
- the invention relates to an alarm generation device in an aircraft, this device comprising:
- a module for obtaining a differential pressure at the level of the filter and - an alarm generation module configured to generate an alarm if the differential pressure exceeds an alarm threshold determined according to said information and said temperature.
- variable alarm thresholds which depend on parameters intrinsic to the oil filter, namely the oil flow in the filter and the temperature of the oil inside the filter.
- the temperature representative of a temperature of the oil inside the filter is delivered by a temperature sensor capable of measuring the temperature of the oil in the filter.
- the temperature representative of a temperature of the oil inside the filter is delivered by a temperature sensor capable of measuring the temperature of the oil in the circuit but outside the filter.
- the oil temperature measured outside the filter may be different from the oil temperature inside the filter.
- the information representative of an oil flow inside the oil filter is supplied by a flow meter at the inlet of the oil filter, for example a turbine.
- the information representative of an oil flow inside the oil filter is a position of a joystick delivering a setpoint to the engine of the aircraft.
- This setpoint is, for example, a speed or thrust or power setpoint.
- the word "sensor” designates any type of component or equipment capable of delivering a measurement or a state of an operating parameter of a state.
- the alarm generation device does not make any calculations to determine the intrinsic parameters of the filter: either the device has sensors to directly obtain the intrinsic parameters of the filter, or the device overcomes these parameters by using substitution parameters accessible by sensors of the device.
- the parameters obtained by the sensors of the alarm generation device allow the device to determine an alarm threshold adapted to the aircraft speed and the temperature conditions.
- the invention relates to a method for creating a model intended to be used by an alarm generation device on board an aircraft, this alarm generation device being configured to generate at least an alarm when a differential pressure at the level of an oil filter of the aircraft exceeds an alarm threshold, this method comprising:
- the invention relates to a device for creating a model intended to be used by an alarm generation device on board an aircraft, this alarm generation device being configured to generate at least one alarm when differential pressure at an oil filter of the aircraft exceeds an alarm threshold, this device comprising:
- this model allowing the alarm generation device to obtain said alarm threshold from:
- the creation method comprises a step of determining a heat transfer function making it possible to estimate the temperature of the oil inside the (intrinsic) filter from a (substitute) temperature measured by a sensor of the alarm generation device at a point of an oil circuit of the aircraft outside the filter, said heat transfer function being used to generate said model.
- the creation method comprises a step of determining a hydraulic transfer function making it possible to estimate the flow rate of oil inside the filter from the position d a joystick delivering a setpoint (for example speed, thrust or power) to the engine of the aircraft, said hydraulic transfer function being used to generate said model.
- a setpoint for example speed, thrust or power
- the position of the joystick can be obtained by a sensor.
- the creation method comprises, for at least one oil flow in the filter, a step of determining a function for determining the differential pressure at the level of the filter as a function the temperature of the oil in the filter and a mass of particles of a pollutant contained in the filter, said function being used to generate said model.
- the creation method comprises a step of determining the alarm threshold according to a critical mass of pollutant particles contained in the filter.
- the model is obtained for a single position of the setpoint lever, namely, in this example, for a position corresponding to the take-off regime.
- take-off is the phase of flight in which the differential pressure at the level of the filter is maximum. It can be measured with an average performance sensor.
- the filtering system of the aircraft comprises a high-performance differential pressure sensor, usable measurements can be obtained even with a low pressure drop at the level of the oil filter.
- the different steps of the alarm generation method and the different steps of the creation method are determined by computer program instructions.
- the invention also relates to a computer program on an information medium, this program being capable of being implemented in a surveillance system or more generally in a computer, this program comprising instructions adapted to the implementation of the steps of a method as described above.
- This program can use any programming language, and be in the form of source code, object code, or intermediate code between source code and object code, such as in a partially compiled form, or in no any other desirable shape.
- the invention also relates to an information medium readable by a computer, and comprising instructions of a computer program as mentioned above.
- the information medium can be any entity or device capable of storing the program.
- the medium may comprise a storage means, such as a ROM, for example a CD ROM or a microelectronic circuit ROM, or even a magnetic recording means, for example a hard disk.
- the information medium can be a transmissible medium such as an electrical or optical signal, which can be conveyed via an electrical or optical cable, by radio or by other means.
- the program according to the invention can in particular be downloaded from an Internet-type network.
- the information medium may be an integrated circuit in which the program is incorporated, the circuit being adapted to execute or to be used in the execution of the method in question.
- FIG. 1 already described illustrates the evolution of the differential pressure in a filter as a function of the mass of pollutant particles contained in the filter at a given oil flow;
- FIG. 2 already described represents the responses of an oil filter as a function of the ambient temperature;
- FIG. 3 represents an alarm generation device according to the invention in its environment
- FIG. 4 represents the hardware architecture of an alarm generation device according to the invention.
- FIG. 5 represents the hardware architecture of a creation device according to the invention
- FIG. 6 represents, in the form of a flowchart, the main steps of a creation process in accordance with the invention.
- Figure 7 shows filter permeability curves for different oil temperatures in a filter
- figure 8 represents alarm thresholds associated with the permeability curves of figure 7;
- FIG. 9 represents a network of curves defining alarm thresholds as a function of the temperature measured in the motor
- FIG. 10 represents, in the form of a flowchart, the main steps of an alarm generation method according to the invention.
- FIG. 11 represents the functional architecture of an alarm generation device according to the invention.
- FIG. 12 represents the hardware architecture of a creation device according to the invention.
- Figure 3 shows an alarm generation device 10 according to a first embodiment of the invention in its environment.
- This device 10 is incorporated in a computer 100 of an aircraft. It is configured to generate A alarms, intended for the cockpit of the aircraft when it detects an imminent bypass situation of an oil filter 2.
- the oil filter 2 is used to filter the oil 3 injected into an engine 4 of the aircraft via a circuit 5 comprising in particular a reservoir 6, a supply pump 7, a heat exchanger 8 and pipes connecting these different pieces of equipment.
- the engine 4 is a turbojet but no limitation is attached to the type of engine considered.
- the alarm generation device 10 has the hardware architecture of a computer. It comprises a processor 10A, a random access memory 10B, a read only memory 10C, a non-volatile flash memory 10D, input/output means 10E as well as communication means 10F.
- a differential pressure sensor 11 which in this example is a sensor of the gauge bridge type installed between the inlet and the outlet of the filter 2. Any other type of differential pressure sensor can be used.
- the alarm generation device 10 comprises a temperature sensor 12 capable of measuring the temperature TM of the oil at a point in the circuit 5.
- the senor 12 is placed at the inlet of the motor 4, that is to say at the coldest part of the circuit 5, downstream of the heat exchanger 8. It is recalled that oil 3 is heated by motor 4 and cooled by heat exchanger 8.
- this temperature sensor 12 is not used only by the invention. It can for example also be used to generate an alarm when the oil temperature TM exceeds a threshold.
- the terms “downstream” and “upstream” are understood here with respect to the direction of circulation of the fluid 3 in the circuit 5.
- the temperature sensor 12 therefore does not directly measure the temperature TF at the level of the filter 2 (intrinsic temperature).
- the alarm generation device 10 comprises a sensor 18 to obtain the position POS of a lever 13 delivering a setpoint to the engine MOT, for example a speed setpoint (takeoff, idle , ascent, cruise, descent, ).
- the non-volatile flash memory 10D comprises, for at least one position POS d of the joystick 13, a network of curves RC d defining the alarm thresholds SIBj d for triggering the alarm A,, depending on the temperature TM measured in circuit 5 by sensor 12.
- the creation device 20 has the hardware architecture of a computer. It comprises a processor 20A, a random access memory 20B, a read only memory 20C, a non-volatile flash memory 20D, input/output means 20E as well as communication means 20F.
- the read only memory 20C of the creation device 20 constitutes a recording medium in accordance with the invention, readable by the processor 20A and on which is recorded a computer program PROGc in accordance with the invention, comprising instructions for the execution of steps E10 to E70 of a creation method P c in accordance with the invention and which will be described with reference to FIG. 6.
- This device 20 is configured to generate networks of RC d curves which are stored in the non-volatile flash memory 10D of the alarm generation device 10 on board the aircraft.
- the temperature TF of the oil in the filter can be estimated from:
- the oil flow rate QF in filter 2 is estimated from:
- the estimation of the oil flow QF can also take into account the temperature of the oil in the pump 7. This temperature can be estimated from the temperature measured by the sensor of temperature 12.
- the temperature transfer function FTT (respectively the hydraulic transfer function FTQ) is determined from a digital thermal model (respectively from a digital hydraulic model ) taking into account the particular characteristics of the components of the oil circuit 5, this model being validated, refined or adjusted with actual measurements on an instrumented engine during the design phase.
- the engineers in charge of the design of the filtering system have, for at least one oil flow QF d in the filter 2, data making it possible to estimate the differential pressure DP at the level of filter 2 depending on:
- the method for creating the oil system comprises a step E30 of determining the differential pressure DP d at the level of the filter 2 as a function of the oil temperature TF in the filter 2 and the mass m of pollutant particles contained in filter 2, for an oil flow QF d in filter 2.
- the method for creating the oil system comprises, for at least one position POS d of the lever 13, a step E40 of determining a function f d making it possible to obtain the differential pressure DP d at the level of filter 2 according to:
- the creation method includes a step E50 to determine the critical mass me, of pollutant particles contained in the filter at these instants H,.
- - m u is the mass of particles supposed to be deposited in the filter per unit time.
- FIG. 10 represents the main steps of an alarm method in accordance with the invention, implemented by the alarm device 10 on board the aircraft.
- the alarm device 10 permanently obtains (general step F10):
- the alarm device 10 determines whether there exists in its non-volatile memory 10D a network of curves RC d for the position POS d of the joystick 13.
- the alarm device 10 determines from the network of curves RC d and the temperature TM, the alarm threshold SIBj d for the alarm A, .
- the alarm device 10 compares the differential pressure DP measured by the sensor 11 at the temperature TM with the alarm threshold SIBj d .
- the alarm device 10 determines that the differential pressure DP measured by the sensor 11 is greater than the alarm threshold SIBi d , it triggers the alarm A, during a step F50.
- the creation device 20 creates a single network of curves RCi, corresponding to the take-off regime.
- Take-off is the engine speed in which the flow in the filter 2 is the greatest. The risks of clogging are increased and it is relevant to monitor the filter during this phase.
- this mode was advantageous because it is the one in which the sensor 11 measures a pressure difference DP at the level of the filter 2 the most important.
- This embodiment of the invention is therefore less sensitive to measurement errors; it does not require a high precision sensor 11 .
- the alarm thresholds SIBj d are represented in the form of networks of curves RC d , but this is not limiting. Any data structure, for example a table, an abacus, etc. making it possible to express, for a given engine speed RM d , the alarm threshold SIBj d as a function of the temperature measured by a sensor of the device 10 can be used as a replacement for this network of curves.
- the creation device 20 estimates the temperature TF of the oil in the filter 2 from the temperature measured by the sensor 12 at the inlet of the engine 4.
- the oil temperature TF in filter 2 can be estimated from an oil temperature measured at another point in circuit 5.
- a measurement of the ambient temperature can be used to consolidate the estimation of the temperature TF.
- the temperature TF can also be measured by a specific temperature sensor capable of directly measuring the temperature in the filter. In this case, step E10 described previously is not necessary.
- the creation device 20 estimates the flow rate QF of oil in the filter 2 from the position of the lever 13 which supplies the instructions to the motor 4.
- the circuit 5 comprises a flow regulator controlled by the computer 100.
- the command sent by the computer to regulate the flow or a status datum returned to the computer 100 by the regulator can be used to estimate the flow QF in the filter 2.
- the flow rate QF of oil in the filter can be measured at the inlet of the filter 2, or at another place in the circuit, by a flowmeter, for example by a turbine. In this case, step E20 described previously is not necessary.
- the read only memory 10C of the alarm device 10 constitutes a recording medium in accordance with the invention, readable by the processor 10A and on which is recorded a computer program PROG A in accordance with the invention, comprising instructions for the execution of steps F10 to F50 of an alarm generation method in accordance with the invention and which will be described with reference to FIG. 10.
- the computer program PROG A defines functional modules of the alarm device 10 represented in FIG. 11 (software modules here), namely in particular:
- an MF10 module configured to obtain:
- a delivered temperature representative of a temperature of the oil inside the filter 2 for example a temperature measured at another point in the circuit or in the filter itself
- an alarm generation module MF50 configured to generate an alarm A, if the differential pressure DP exceeds an alarm threshold SIBj d determined according to the information (i) and the temperature (ii).
- the creation device 20 also has the hardware architecture of a computer. It comprises a processor 20A, a random access memory 20B, a read only memory 20C, a non-volatile flash memory 20D, input/output means 20E as well as communication means 20F.
- the read only memory 20C of the creation device 20 constitutes a recording medium in accordance with the invention, readable by the processor 20A and on which is recorded a computer program PROGc in accordance with the invention, comprising instructions for the execution of steps E10 to E70 of a creation method P c in accordance with the invention as described with reference to FIG. 6.
- the computer program PROG c recorded in the ROM 20C defines functional modules of the creation device 20 represented in FIG. 12 (software modules here), namely in particular:
- an MGM module for generating a model (network of curves, table, chart, etc.) enabling the alarm generation device 10 to obtain an alarm threshold
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Aviation & Aerospace Engineering (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Lubrication Details And Ventilation Of Internal Combustion Engines (AREA)
- Control Of Turbines (AREA)
- Fluid-Pressure Circuits (AREA)
Abstract
Description
Claims
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN202280016859.4A CN116888354A (zh) | 2021-02-24 | 2022-02-18 | 用于生成用于监测航空器中的油过滤器的警报的方法和装置 |
US18/547,642 US20240226783A9 (en) | 2021-02-24 | 2022-02-18 | Method and device for generating an alarm for monitoring an oil filter in an aircraft |
EP22710654.9A EP4298330A1 (fr) | 2021-02-24 | 2022-02-18 | Procede et dispositif de generation d'alarme pour la surveillance d'un filtre a huile dans un aeronef |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FRFR2101796 | 2021-02-24 | ||
FR2101796A FR3120096A1 (fr) | 2021-02-24 | 2021-02-24 | Procédé et dispositif de génération d’alarme pour la surveillance d’un filtre à huile dans un aéronef |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2022180327A1 true WO2022180327A1 (fr) | 2022-09-01 |
Family
ID=74871732
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/FR2022/050292 WO2022180327A1 (fr) | 2021-02-24 | 2022-02-18 | Procede et dispositif de generation d'alarme pour la surveillance d'un filtre a huile dans un aeronef |
Country Status (5)
Country | Link |
---|---|
US (1) | US20240226783A9 (fr) |
EP (1) | EP4298330A1 (fr) |
CN (1) | CN116888354A (fr) |
FR (1) | FR3120096A1 (fr) |
WO (1) | WO2022180327A1 (fr) |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2949352A1 (fr) * | 2009-08-31 | 2011-03-04 | Snecma | Surveillance d'un filtre servant au filtrage d'un fluide dans un moteur d'aeronef |
US20120074069A1 (en) * | 2010-07-19 | 2012-03-29 | Hanilton Sundstrand Corporation | Smart filter monitor |
FR3013389A1 (fr) * | 2013-11-15 | 2015-05-22 | Snecma | Systeme de controle de l'ouverture d'un systeme de derivation pour l'alimentation en fluide d'une turbomachine |
FR3030624A1 (fr) * | 2014-12-18 | 2016-06-24 | Snecma | Procede et dispositif d'obtention d'une pression differentielle de reference d'un fluide traversant un filtre d'un moteur d'aeronef |
-
2021
- 2021-02-24 FR FR2101796A patent/FR3120096A1/fr active Pending
-
2022
- 2022-02-18 CN CN202280016859.4A patent/CN116888354A/zh active Pending
- 2022-02-18 WO PCT/FR2022/050292 patent/WO2022180327A1/fr active Application Filing
- 2022-02-18 EP EP22710654.9A patent/EP4298330A1/fr active Pending
- 2022-02-18 US US18/547,642 patent/US20240226783A9/en active Pending
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2949352A1 (fr) * | 2009-08-31 | 2011-03-04 | Snecma | Surveillance d'un filtre servant au filtrage d'un fluide dans un moteur d'aeronef |
US20120074069A1 (en) * | 2010-07-19 | 2012-03-29 | Hanilton Sundstrand Corporation | Smart filter monitor |
FR3013389A1 (fr) * | 2013-11-15 | 2015-05-22 | Snecma | Systeme de controle de l'ouverture d'un systeme de derivation pour l'alimentation en fluide d'une turbomachine |
FR3030624A1 (fr) * | 2014-12-18 | 2016-06-24 | Snecma | Procede et dispositif d'obtention d'une pression differentielle de reference d'un fluide traversant un filtre d'un moteur d'aeronef |
Also Published As
Publication number | Publication date |
---|---|
US20240131457A1 (en) | 2024-04-25 |
CN116888354A (zh) | 2023-10-13 |
FR3120096A1 (fr) | 2022-08-26 |
US20240226783A9 (en) | 2024-07-11 |
EP4298330A1 (fr) | 2024-01-03 |
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