EP4274949A1 - Ensemble de redressement - Google Patents
Ensemble de redressementInfo
- Publication number
- EP4274949A1 EP4274949A1 EP22702500.4A EP22702500A EP4274949A1 EP 4274949 A1 EP4274949 A1 EP 4274949A1 EP 22702500 A EP22702500 A EP 22702500A EP 4274949 A1 EP4274949 A1 EP 4274949A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- aub
- straightening
- vane
- axis
- assembly
- 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.)
- Pending
Links
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02K—JET-PROPULSION PLANTS
- F02K3/00—Plants including a gas turbine driving a compressor or a ducted fan
- F02K3/02—Plants including a gas turbine driving a compressor or a ducted fan in which part of the working fluid by-passes the turbine and combustion chamber
- F02K3/04—Plants including a gas turbine driving a compressor or a ducted fan in which part of the working fluid by-passes the turbine and combustion chamber the plant including ducted fans, i.e. fans with high volume, low pressure outputs, for augmenting the jet thrust, e.g. of double-flow type
- F02K3/06—Plants including a gas turbine driving a compressor or a ducted fan in which part of the working fluid by-passes the turbine and combustion chamber the plant including ducted fans, i.e. fans with high volume, low pressure outputs, for augmenting the jet thrust, e.g. of double-flow type with front fan
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B64—AIRCRAFT; AVIATION; COSMONAUTICS
- B64C—AEROPLANES; HELICOPTERS
- B64C11/00—Propellers, e.g. of ducted type; Features common to propellers and rotors for rotorcraft
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B64—AIRCRAFT; AVIATION; COSMONAUTICS
- B64C—AEROPLANES; HELICOPTERS
- B64C11/00—Propellers, e.g. of ducted type; Features common to propellers and rotors for rotorcraft
- B64C11/001—Shrouded propellers
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B64—AIRCRAFT; AVIATION; COSMONAUTICS
- B64C—AEROPLANES; HELICOPTERS
- B64C11/00—Propellers, e.g. of ducted type; Features common to propellers and rotors for rotorcraft
- B64C11/46—Arrangements of, or constructional features peculiar to, multiple propellers
- B64C11/48—Units of two or more coaxial propellers
-
- 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
- B64D35/04—Transmitting power from power plants to propellers or rotors; Arrangements of transmissions characterised by the transmission driving a plurality of propellers or rotors
-
- 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
- F01D25/16—Arrangement of bearings; Supporting or mounting bearings in casings
- F01D25/162—Bearing supports
-
- 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
- F01D5/00—Blades; Blade-carrying members; Heating, heat-insulating, cooling or antivibration means on the blades or the members
- F01D5/12—Blades
- F01D5/14—Form or construction
- F01D5/141—Shape, i.e. outer, aerodynamic form
- F01D5/146—Shape, i.e. outer, aerodynamic form of blades with tandem configuration, split blades or slotted blades
-
- 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
- F01D9/00—Stators
- F01D9/02—Nozzles; Nozzle boxes; Stator blades; Guide conduits, e.g. individual nozzles
- F01D9/04—Nozzles; Nozzle boxes; Stator blades; Guide conduits, e.g. individual nozzles forming ring or sector
- F01D9/041—Nozzles; Nozzle boxes; Stator blades; Guide conduits, e.g. individual nozzles forming ring or sector using blades
-
- 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
- F01D9/00—Stators
- F01D9/02—Nozzles; Nozzle boxes; Stator blades; Guide conduits, e.g. individual nozzles
- F01D9/04—Nozzles; Nozzle boxes; Stator blades; Guide conduits, e.g. individual nozzles forming ring or sector
- F01D9/042—Nozzles; Nozzle boxes; Stator blades; Guide conduits, e.g. individual nozzles forming ring or sector fixing blades to stators
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02K—JET-PROPULSION PLANTS
- F02K3/00—Plants including a gas turbine driving a compressor or a ducted fan
- F02K3/02—Plants including a gas turbine driving a compressor or a ducted fan in which part of the working fluid by-passes the turbine and combustion chamber
- F02K3/04—Plants including a gas turbine driving a compressor or a ducted fan in which part of the working fluid by-passes the turbine and combustion chamber the plant including ducted fans, i.e. fans with high volume, low pressure outputs, for augmenting the jet thrust, e.g. of double-flow type
- F02K3/062—Plants including a gas turbine driving a compressor or a ducted fan in which part of the working fluid by-passes the turbine and combustion chamber the plant including ducted fans, i.e. fans with high volume, low pressure outputs, for augmenting the jet thrust, e.g. of double-flow type with aft fan
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D29/00—Details, component parts, or accessories
- F04D29/40—Casings; Connections of working fluid
- F04D29/52—Casings; Connections of working fluid for axial pumps
- F04D29/54—Fluid-guiding means, e.g. diffusers
- F04D29/541—Specially adapted for elastic fluid pumps
- F04D29/542—Bladed diffusers
- F04D29/544—Blade shapes
-
- 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
- F05D2220/00—Application
- F05D2220/30—Application in turbines
- F05D2220/32—Application in turbines in gas turbines
- F05D2220/326—Application in turbines in gas turbines to drive shrouded, low solidity propeller
-
- 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
- F05D2220/00—Application
- F05D2220/30—Application in turbines
- F05D2220/32—Application in turbines in gas turbines
- F05D2220/327—Application in turbines in gas turbines to drive shrouded, high solidity propeller
-
- 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
- F05D2220/00—Application
- F05D2220/30—Application in turbines
- F05D2220/32—Application in turbines in gas turbines
- F05D2220/328—Application in turbines in gas turbines providing direct vertical lift
-
- 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
- F05D2220/00—Application
- F05D2220/30—Application in turbines
- F05D2220/36—Application in turbines specially adapted for the fan of turbofan engines
-
- 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
- F05D2220/00—Application
- F05D2220/90—Application in vehicles adapted for vertical or short take off and landing (v/stol vehicles)
-
- 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
- F05D2250/00—Geometry
- F05D2250/30—Arrangement of components
- F05D2250/31—Arrangement of components according to the direction of their main axis or their axis of rotation
- F05D2250/314—Arrangement of components according to the direction of their main axis or their axis of rotation the axes being inclined in relation to each other
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T50/00—Aeronautics or air transport
- Y02T50/60—Efficient propulsion technologies, e.g. for aircraft
Definitions
- the present invention relates to a straightening assembly. It relates more particularly to a straightening assembly configured to straighten an air flow generated by a fan.
- FIG. 1 shows a known rectifying ENS assembly.
- This rectifying ENS assembly is included in a MOD module.
- the MOD module also includes an SOU blower.
- the SOU fan includes AUBSOU fan blades configured to generate an airflow.
- the straightening ENS assembly includes a plurality of straightening vanes AUB.
- Each straightening vane AUB is fixed by one end, called the root end, connected to a hub MO.
- the other end of the AUB straightening vane is called the tip end.
- aerodynamic difficulties are encountered at the level of the ENS straightening assembly.
- the number of straightening vanes AUB must be sufficient to avoid the first acoustic modes generating significant noise.
- the AUB straightening vanes must be close together to guide the flow of the air stream, even at the head where the distance between two consecutive AUB straightening vanes is maximum.
- the radius at the tip of the blade is defined as being the radius between the tip of the straightening vanes AUB and the center of the hub MO.
- French patent application FR-3 090 033 is also known, which describes a turbine engine in which a straightening assembly is placed upstream of several bifurcations.
- these bifurcations do not have the effect of straightening the flow and this straightening is carried out mainly by the straightening assembly.
- These bifurcations mainly have the effect of providing a fairing incorporating a certain number of elements connecting the engine to the aircraft (such as pipes, heat exchangers, electrical cables, mechanical drive shafts, structural parts of the engine suspension system , etc.) and to separate the air flow generated by the SOU fan into several sectors.
- There is therefore a need for a new type of air flow straightening assembly making it possible to maximize a distance separating the root of two successive blades and to minimize a distance separating their heads.
- an air flow straightening assembly comprising a plurality of straightening vanes distributed around an axis of revolution of the straightening assembly, for each righting vane, a chord of the righting vane, taken at the level of the root of the righting vane, not overlapping, in the direction of the axis of revolution, a chord of an adjacent righting vane, taken at the level of the root of the adjacent righting vane, and a chord of the righting vane, taken at the level of the righting vane head, overlapping, in the direction of the axis of revolution, a chord of the adjacent righting vane, taken at the level of the righting vane head adjacent righting vane.
- This straightening assembly makes it possible to double the distance between the root of two successive blades without changing the distance between their heads. This doubling facilitates the fixing of the blades at the level of the hub. This makes it easier to fix the blades, in the case of engines with a very high bypass ratio (UHBR for Ultra High Bypass Ratio in English), in the case of a fan driven by electric motors and in the case of engines without a primary compressor. integrated downstream of the rectifier assembly, for example in the case of a single-channel motor.
- UHBR Ultra High Bypass Ratio in English
- leading edge of part of the straightening vanes is farther from the trailing edge of the fan blades, which makes it possible to limit the noise of the fan.
- the shape of the air outlet channel may possibly be implemented lower and therefore will lead to a reduction in the master torque of the engine and therefore in its mass.
- this arrangement facilitates the installation of the ejection orifice allowing the extraction of the primary air flow when the engine is operating for example at idle.
- This ejection orifice is also known by the English expression Variable Bleed Valve VBV.
- the outlet grilles of the VBV relief valve duct are located near the feet of the OGVs on the interior wall of the secondary flow
- a distance between the head of the straightening vane and the axis of revolution is substantially identical for all the straightening vanes.
- a distance between the root of the straightening vane and the axis of revolution is substantially identical for all the straightening vanes.
- This embodiment is advantageous in the case of a motor in which the rectifier is on the same stream (secondary flow only for a double flow motor or single flow for a single flow motor) for example "monoflow" with generator of remote gas.
- a distance between the root of the straightening vane and the axis of revolution, and a distance between the root of the adjacent straightening vane and the axis of revolution, are different.
- This embodiment is advantageous in the case of an engine in which the OGV roots are in different veins (secondary flow) and upstream of the primary flow, for example double-flow engine.
- Another aspect of the invention relates to a fan module which comprises a fan and a straightening assembly as described above.
- the straightening assembly is placed downstream of the fan.
- turbofan engine comprising the rectifier assembly or the fan module.
- the turbofan engine also includes a power generator.
- Another aspect of the invention relates to a single-flow engine comprising the rectifier assembly or the fan module.
- the mono-flow engine also includes a delocalized power generator.
- Another aspect of the invention relates to an aircraft comprising a turbofan engine or a single-flow engine.
- FIG. 2 represents a first embodiment of the module of the invention.
- FIG. 3 represents a second embodiment of the module of the invention.
- FIGS. 4-a to 4-c represent aircraft implementing the second embodiment of the module of the invention.
- FIG. 5 represents a third embodiment of the module of the invention.
- FIG. 2 represents a fan module MOD comprising a fan SOU and a rectification assembly ENS of the OGV type for “Outlet Guide Vane” in English.
- This module is integrated in a turbine engine (not represented in FIG. 2) allowing for example the motorization of an aircraft (not represented in FIG. 2).
- the upstream and the downstream are defined with respect to the direction of normal flow of the air flow through the turbomachine and more particularly through the fan SOU and the straightening assembly ENS.
- the module MOD has a longitudinal axis X.
- the module MOD is substantially symmetrical with respect to this axis X.
- a axial direction corresponds to the direction of the X axis.
- a radial direction is a direction perpendicular to this X axis and passing through it.
- the terms internal and external are used in reference to a radial direction so that the internal part or face of an element is closer to the X axis than the external part or face of the same element.
- the MOD module When the MOD module is integrated into the turbine engine, the MOD module is placed in the upstream part of the turbine engine.
- the MOD module includes a cylindrical CEXT fan casing.
- An axis of revolution of the fan casing CEXT is Tax X.
- the fan SOU comprises a fan rotor ROT, an upstream part of which is of substantially conical shape.
- the fan SOU comprises fan blades AUBSOU linked to the rotor ROT and extending radially to a zone very close to the inner face of the outer fairing CEXT.
- the SOU fan is used to generate the flow passing through the turbomachine.
- the straightening assembly ENS makes it possible to straighten the flow of air coming from the fan SOU.
- the ENS straightening assembly includes a plurality of straightening AUB vanes that extend radially about the X axis.
- AUB straightening vanes have an EXTP root located at one end of the AUB straightening vane closest to the X axis and an EXTT head located at one end of the AUB straightening vane furthest from the axis X.
- AUB righting vanes have a leading edge, a trailing edge, a lower surface and a lower surface.
- AUB straightening vanes have chords or lines of camber extending from the leading edge to trailing edge. The chord is the line halfway between the intrados surface and the extrados surface of the AUB blade.
- each straightening vane AUB two adjacent straightening vanes AUB are defined, one straightening vane AUB adjacent in the clockwise direction and one straightening vane AUB adjacent in the anti-clockwise direction.
- the clockwise and anti-clockwise directions are taken by considering the ENS straightening assembly with the upstream part oriented towards the user.
- the straightening vane AUB adjacent in the clockwise direction to a first straightening vane AUB is the straightening vane AUB succeeding in the clockwise direction to the first straightening vane AUB and for which the angle between a first axis perpendicular to the axis X and passing through the leading edge at the root of the first straightening vane AUB and a second axis perpendicular to the axis X and passing through the leading edge at the root of the straightening vane AUB adjacent clockwise is minimal.
- the straightening vane AUB adjacent in the anti-clockwise direction to a first straightening vane AUB is the straightening vane AUB succeeding in the counter-clockwise direction to the first straightening vane AUB and for which the angle between a first axis perpendicular to the X axis and passing through the leading edge at the root of the first straightening vane AUB and a second axis perpendicular to the X axis and passing through the leading edge at the root of the Counter-clockwise adjacent AUB righting vane is minimal.
- the AUB straightening vanes are distributed equidistantly around the X axis of revolution of the ENS straightening assembly.
- an angle between a first axis perpendicular to the axis X and passing through the leading edge of a straightening vane AUB and a second axis perpendicular to the axis X and passing through the leading edge of a straightening vane AUB adjacent to the blade has a substantially constant absolute value, whatever the straightening vane AUB considered.
- the chord COP at the level of the root of the straightening vane AUB considered does not overlap axially the chord COP at the level of the root of a straightening vane AUB adjacent to the blade of AUB turnaround considered.
- the COT chord at the tip of the AUB straightening vane considered overlaps axially the COT chord at the tip of an AUB straightening vane adjacent to the AUB turnaround considered.
- the COP chord at the root level overlaps axially the COP chord at the root level of a straightening vane AUB twice adjacent (clockwise or anti-clockwise) to the straightening vane AUB considered.
- straightening vane AUB twice adjacent in the anti-clockwise direction to a first straightening vane AUB it is understood the straightening vane AUB adjacent in the anti-clockwise direction to an anti-clockwise straightening vane AUB adjacent in the clockwise direction at the first AUB righting vane.
- the AUB straightening vanes are divided into two groups of identical size.
- the AUB straightening vanes of a first group have the leading edge, at the level of the head of the straightening vane AUB, located at a first substantially identical axial position.
- the straightening vanes AUB of a second group have the leading edge, at the level of the head of the straightening vane AUB, located at a second substantially identical axial position.
- the first axial position is closer to the fan SOU than the second axial position. This first axial position is therefore upstream of the second axial position.
- the straightening vanes AUB are distributed around the X axis by placing alternately a straightening vane AUB of the first group and a straightening vane AUB of the second group.
- the straightening vanes AUB of the first group are fixed at the level of the foot to an external surface of a first hub MOI of substantially axisymmetric shape.
- An axis of revolution of the first MOI hub is identical to the axis X.
- the first MOI hub has a first diameter.
- the righting vanes AUB of the second group are fixed at the level of the foot to the surface of a second hub M02 also of substantially axisymmetric shape.
- An axis of revolution of the second hub M02 is identical to the axis X.
- the second hub M02 has a second diameter.
- the first diameter is less than the second diameter.
- the first hub MOI extends along the X axis from the fan SOU.
- the second hub M02 extends along the X axis from a position downstream of the fan SOU.
- the upstream end of the second hub M02 is called the separating spout.
- the space between the outer surface of the first hub MOI and the inner surface of the second hub M02 forms the start of a primary stream in which a primary flow circulates.
- the space comprised between the external surface of the second hub M02 and the internal surface of the fan casing CEXT forms a secondary stream in which a secondary flow circulates.
- the MOD module has a diameter of between 25 and 130 inches (ie between 63.5 cm and 330.2 cm) and comprises between 10 and 26 AUBSOU fan blades.
- the straightening assembly ENS comprises an even number of straightening vanes AUB which are grouped into two groups (one comprising the even straightening vanes AUB and the other the odd straightening vanes AUB).
- the position of the head of the even and odd AUB straightening vanes is substantially unchanged (successive straightening vanes are close together at the level of the fan casing).
- the odd straightening vanes extend from the outer casing to the inner surface of the flow while the even straightening vanes stop at the splitter spout (on the middle surface that bisects the flow).
- the edge of the slat is positioned axially between the leading edge of the even righting vanes and the trailing edge of the odd righting vanes.
- the feet of the even and odd AUB straightening vanes are offset longitudinally so that the air flows between two AUB straightening vanes of the same group.
- the width of the vein at the level of the root of the straightening vanes AUB is doubled, which makes it possible to integrate a greater number of straightening vanes AUB, for example they can be increased by 5% to 10%.
- the odd AUB straightening vanes straighten all the airflow generated by the SOU fan, while the even AUB straightening vanes straighten only the secondary flow.
- FIG. 3 represents an embodiment in which the straightening assembly ENS comprises only the first hub MOI.
- the set of straightening vanes AUB are fixed at the level of the foot to the outer surface of a first hub MOI.
- the straightening vanes AUB of a first group have the leading edge, at the level of the head of the straightening vane AUB, located at a first substantially identical longitudinal position.
- the straightening vanes AUB of a second group have the leading edge, at the level of the tip of the straightening vane AUB, located at a second substantially identical longitudinal position.
- the first longitudinal position is closer to the fan SOU than the second axial position.
- an external diameter of the rotor ROT of the fan SOU is substantially equal to the external diameter of the hub MOI.
- the module MOD only comprises a single vein and this module MOD is connected to a delocalized power generator.
- the assembly comprising the MOD module and the delocalized power generator, then forms a single-flow motor.
- FIG. 3 therefore represents the module MOD comprising the fan SOU and the rectifier assembly ENS in a monoflow case.
- the straightening vanes AUB still an even number, are grouped into two groups with a position of the heads that is substantially unchanged.
- the feet of the even and odd AUB straightening vanes are offset longitudinally.
- the MOD module does not have a splitter. Fixing the AUB righting vanes to the foot level is made on the same outer surface of the MOI hub but at a different position, so that the leading edge of the even AUB righting vanes is behind the trailing edge of the odd AUB righting vanes.
- Figures 4-a to 4-c represent such an assembly comprising the MOD module and a delocalized GEN power generator.
- This delocalized power generator GEN can, for example, be a gas turbine, an electric motor or any other device making it possible to supply a rotating shaft with a torque.
- the delocalized GEN power generator mechanically drives the MOD module via a transmission shaft.
- the power generator GEN can be placed outside the MOD module or be positioned in a nacelle comprising the MOD module (for example for a vertical take-off aircraft, known by the acronym VTOL in English Vertical Take-Off and Landing, figure 4-c)
- FIG. 5 shows another embodiment of the MOD module.
- all of the straightening vanes AUB are fixed, by the foot, to the second hub M02.
- This second M02 hub is on the inside of the secondary vein.
- the ENS straightening assembly only straightens the secondary airflow.
- the MOD module is the upstream part of a turboshaft engine.
- the straightening vanes EUB only make it possible to straighten the second stream.
- this invention makes it possible, in the case of a dual-flow blower to supply a secondary flow and a primary flow, to have the separation nozzle positioned in three different ways: upstream of the set of straightening vanes AUB, more particularly upstream of the leading edge of the set of straightening vanes AUB, between the trailing edge of the odd straightening vanes AUB and the leading edge of the vanes peers AUB straightening vanes, downstream of the AUB straightening vanes, more particularly downstream of the trailing edge of all the AUB straightening vanes.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Aviation & Aerospace Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Physics & Mathematics (AREA)
- Geometry (AREA)
- Fluid Mechanics (AREA)
- Structures Of Non-Positive Displacement Pumps (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR2100204A FR3118786B1 (fr) | 2021-01-11 | 2021-01-11 | Ensemble de redressement |
| PCT/FR2022/050019 WO2022148928A1 (fr) | 2021-01-11 | 2022-01-04 | Ensemble de redressement |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| EP4274949A1 true EP4274949A1 (fr) | 2023-11-15 |
Family
ID=74669145
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP22702500.4A Pending EP4274949A1 (fr) | 2021-01-11 | 2022-01-04 | Ensemble de redressement |
Country Status (5)
| Country | Link |
|---|---|
| US (1) | US12000310B2 (fr) |
| EP (1) | EP4274949A1 (fr) |
| CN (1) | CN116783117A (fr) |
| FR (1) | FR3118786B1 (fr) |
| WO (1) | WO2022148928A1 (fr) |
Family Cites Families (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3536414A (en) * | 1968-03-06 | 1970-10-27 | Gen Electric | Vanes for turning fluid flow in an annular duct |
| GB2407136B (en) * | 2003-10-15 | 2007-10-03 | Alstom | Turbine rotor blade for gas turbine engine |
| US7547186B2 (en) * | 2004-09-28 | 2009-06-16 | Honeywell International Inc. | Nonlinearly stacked low noise turbofan stator |
| US7374403B2 (en) * | 2005-04-07 | 2008-05-20 | General Electric Company | Low solidity turbofan |
| FR3005120A1 (fr) * | 2013-04-24 | 2014-10-31 | Aircelle Sa | Structure de redressement de flux pour nacelle |
| US20180017019A1 (en) * | 2016-07-15 | 2018-01-18 | General Electric Company | Turbofan engine wth a splittered rotor fan |
| US10458426B2 (en) * | 2016-09-15 | 2019-10-29 | General Electric Company | Aircraft fan with low part-span solidity |
| FR3070448B1 (fr) * | 2017-08-28 | 2019-09-06 | Safran Aircraft Engines | Aube de redresseur de soufflante de turbomachine, ensemble de turbomachine comprenant une telle aube et turbomachine equipee de ladite aube ou dudit ensemble |
| GB201803571D0 (en) * | 2018-03-06 | 2018-04-18 | Rolls Royce Plc | Component |
| FR3090033B1 (fr) | 2018-12-18 | 2020-11-27 | Safran Aircraft Engines | Ensemble d’aube directrice de sortie et de bifurcation pour turbomachine |
-
2021
- 2021-01-11 FR FR2100204A patent/FR3118786B1/fr active Active
-
2022
- 2022-01-04 WO PCT/FR2022/050019 patent/WO2022148928A1/fr not_active Ceased
- 2022-01-04 CN CN202280009721.1A patent/CN116783117A/zh active Pending
- 2022-01-04 EP EP22702500.4A patent/EP4274949A1/fr active Pending
- 2022-01-04 US US18/271,539 patent/US12000310B2/en active Active
Also Published As
| Publication number | Publication date |
|---|---|
| WO2022148928A1 (fr) | 2022-07-14 |
| CN116783117A (zh) | 2023-09-19 |
| US20240052751A1 (en) | 2024-02-15 |
| US12000310B2 (en) | 2024-06-04 |
| FR3118786A1 (fr) | 2022-07-15 |
| FR3118786B1 (fr) | 2023-10-20 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| FR3130897A1 (fr) | Turbomachine d’aéronef | |
| EP4069944B1 (fr) | Raccordement electrique d'une machine electrique dans une turbomachine d'aeronef | |
| FR3130896A1 (fr) | Turbomachine d’aéronef | |
| FR3027053B1 (fr) | Stator de turbomachine d'aeronef | |
| FR2994452A1 (fr) | Turbomachine comportant une pluralite d'aubes radiales fixes montees en amont de la soufflante | |
| EP3594503B1 (fr) | Turbomachine | |
| EP4377203B1 (fr) | Hélice pour ensemble propulsif d'aéronef, ensemble propulsif et procédé d'utilisation d'un tel ensemble propulsif | |
| EP3412876B1 (fr) | Compresseur a géométrie variable de turbomachine axiale | |
| EP4274949A1 (fr) | Ensemble de redressement | |
| WO2024200946A1 (fr) | Turbomachine comprenant des rangees d'aubes statoriques et un diffuseur dans un canal où circule un troisieme flux | |
| FR3131600A1 (fr) | Ensemble propulsif pour un aéronef | |
| BE1030724B1 (fr) | Ensemble pour turbomachine | |
| EP4229286B1 (fr) | Système propulsif aéronautique ayant un rendement propulsif amélioré | |
| BE1032189B1 (fr) | Aube pour compresseur de turbomachine d'aeronef, compresseur, turbomachine | |
| EP4630673A1 (fr) | Ensemble propulsif pour un aéronef | |
| WO2024052631A1 (fr) | Aube directrice destinée à être fixée sur une virole de stator d'un moteur à turbine à gaz, assemblage de stator de moteur à turbine à gaz et moteur à turbine à gaz | |
| FR3154100A1 (fr) | Soufflante carénée pour une turbomachine d’aéronef | |
| FR3115560A1 (fr) | Element de carenage pour entourer un obstacle dans un ecoulement de fluide | |
| WO2025093843A1 (fr) | Aube de redresseur avec une fente | |
| FR3116559A1 (fr) | Turbomachine comprenant une turbine à section variable | |
| FR3099518A1 (fr) | Ensemble redresseur pour un compresseur de turbomachine | |
| BE1024743A1 (fr) | Compresseur basse pression de turbomachine axiale |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: UNKNOWN |
|
| STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: THE INTERNATIONAL PUBLICATION HAS BEEN MADE |
|
| PUAI | Public reference made under article 153(3) epc to a published international application that has entered the european phase |
Free format text: ORIGINAL CODE: 0009012 |
|
| STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: REQUEST FOR EXAMINATION WAS MADE |
|
| 17P | Request for examination filed |
Effective date: 20230720 |
|
| AK | Designated contracting states |
Kind code of ref document: A1 Designated state(s): AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR |
|
| DAV | Request for validation of the european patent (deleted) | ||
| DAX | Request for extension of the european patent (deleted) | ||
| STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: EXAMINATION IS IN PROGRESS |
|
| 17Q | First examination report despatched |
Effective date: 20250806 |