WO2014006310A1 - Redresseur de turbomachine avec aubes à profil ameliore - Google Patents
Redresseur de turbomachine avec aubes à profil ameliore Download PDFInfo
- Publication number
- WO2014006310A1 WO2014006310A1 PCT/FR2013/051531 FR2013051531W WO2014006310A1 WO 2014006310 A1 WO2014006310 A1 WO 2014006310A1 FR 2013051531 W FR2013051531 W FR 2013051531W WO 2014006310 A1 WO2014006310 A1 WO 2014006310A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- blade
- leading edge
- height
- curve
- turbomachine
- Prior art date
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
- 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
-
- 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
-
- 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
- F01D1/00—Non-positive-displacement machines or engines, e.g. steam turbines
- F01D1/02—Non-positive-displacement machines or engines, e.g. steam turbines with stationary working-fluid guiding means and bladed or like rotor, e.g. multi-bladed impulse steam turbines
- F01D1/04—Non-positive-displacement machines or engines, e.g. steam turbines with stationary working-fluid guiding means and bladed or like rotor, e.g. multi-bladed impulse steam turbines traversed by the working-fluid substantially axially
-
- 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
- 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
- F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
- F05B—INDEXING SCHEME RELATING TO WIND, SPRING, WEIGHT, INERTIA OR LIKE MOTORS, TO MACHINES OR ENGINES FOR LIQUIDS COVERED BY SUBCLASSES F03B, F03D AND F03G
- F05B2250/00—Geometry
- F05B2250/70—Shape
- F05B2250/71—Shape curved
-
- 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
- F05D2240/00—Components
- F05D2240/10—Stators
- F05D2240/12—Fluid guiding means, e.g. vanes
- F05D2240/121—Fluid guiding means, e.g. vanes related to the leading edge of a stator vane
-
- 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 invention relates to the field of turbomachine rectifiers and turbomachines comprising such rectifiers.
- a turbomachine with a double flow for aeronautical propulsion is represented in FIG. 1. It comprises a fan 10 delivering a flow of air, a central part of which, called the primary flow F P , is injected into a compressor 12 which supplies a turbine 14 driving the turbine. blower.
- the peripheral part, called the secondary flow F s , of the air flow is in turn ejected to the atmosphere to provide a part of the thrust of the turbomachine 1, after having passed a ring of vanes arranged downstream of the blower.
- This ring called the rectifier 20 (also known by the acronym OGV for "Outlet Guide Valve”), straighten the air flow at the output of the fan, while limiting losses to the maximum.
- a decrease of 0.1% of the losses (for example pressure decrease) in the rectifier can lead to a 0.2 point increase in efficiency of the assembly comprising the fan and the rectifier, the correspondence between the losses and the efficiency depending on heard of the engine and the aerodynamic load of the associated blower.
- the efficiency of the rectifier depends in particular on the gradients of certain physical quantities of the air flow at the outlet of the fan, as a function of the distance with respect to the axis of the turbomachine. This is called the rectifier power supply by the blower.
- These physical quantities are, for example, the air flow rate, its compression ratio or its temperature.
- the straightening of the air flow is ensured by the vanes of the straightener, whose arrangement and geometry are adapted to this power supply.
- the first stator vanes were two-dimensional, of substantially rectangular shape.
- these geometries are no longer compatible with loss improvements and congestion reductions required by new designs.
- Three-dimensional profiles of straightener vanes have therefore been developed, as for example in the document FR 2 828 709.
- document US 2005/008494 proposes a rectifier whose blades extend radially around the axis of revolution of the stator and have a head end inclined at an angle of between 27 and 33 degrees to in the radial direction, this to reduce the noise generated by the fan positioned upstream of the rectifier.
- the invention aims to provide a rectifier whose blades have a geometry adapted to overcome at least one of the aforementioned drawbacks.
- the invention relates to a turbomachine rectifier comprising a plurality of blades arranged around a ring centered on an axis of the turbomachine, each blade having a leading edge and extending between one end. foot and a leading end, the leading edge at the foot end of each blade being located upstream of the leading edge at the head end of the blade, with respect to the direction of flow of the blade.
- the rectifier being characterized in that the stacking curve Tangential, constituted by the position, in the direction tangential to the ring, of the centers of gravity of successive sections of blade in the height of the dawn, is a constantly increasing curve towards the upper surface of the dawn, in that said curve has, in the vicinity of the end of head of a blade, an accentuated slope towards the upper surface with respect to the remainder of said curve, and in that the average slope of the curve in the vicinity of the head end of the dawn is greater than at least 1 .2 times the slope of the curve on the portion between 30% and 90% of the height of the blade.
- the invention also has at least one of the following characteristics:
- the portion of the curve in the vicinity of the leading end is between 90% and 100% of the height of the blade.
- the leading edge of each blade comprises at least a portion located downstream of the leading edge position at the head end of the blade relative to the direction of the air flow.
- the downstream portion of the leading edge position at the leading end of the blade is included in a leading edge area between 60 and 100% of the blade height.
- the point of the leading edge disposed at the leading edge position at the head end of the blade is between 60 and 80% of the height of the blade.
- the leading edge at the foot end of each blade is located upstream of the leading edge at the head end of the blade relative to the direction of the air flow by a distance between 12 and 20% of the height of the blade, the distance being measured in the direction of the axis of the turbomachine.
- the invention further relates to a turbomachine, comprising at least one rectifier according to the invention.
- FIG. 1, already described, schematically represents a double-flow turbomachine.
- Figure 2a is a partial schematic view of a rectifier.
- FIG. 2b shows the principle of a stator blade formed of a plurality of blade sections.
- FIG. 3a shows the evolution of the trace of the leading edge of a blade with respect to the direction of the air flow in the turbomachine.
- FIG. 3b represents the stacking curve with respect to the direction tangential to the rectifier. .
- FIG. 4a represents, on the one hand for a blade according to one embodiment of the invention (curve in solid lines) and, on the other hand, for another blade of two-dimensional geometry (curve in dashed lines), the distribution of the flow rate air along the height of dawn, at the foot of dawn.
- FIG. 4b represents, for one and the other of these two blades, the air pressure losses at the passage of the dawn along the height of the dawn, at the level of the foot of the dawn .
- FIG. 4c represents, for one and the other of these two blades, the evolution of the pressure losses of the air at the passage of the dawn all along the height of the blade.
- Figures 5a and 5b show the detachments at the head of a blade, respectively according to the prior art and according to the invention.
- a turbomachine one double present flows, as described above, a blower 10 and a rectifier 20 type OGV, for rectifying a secondary air flow F s coming from the fan.
- the rectifier 20 comprises a plurality of vanes 22 regularly distributed around an annulus 29 centered on the axis of the turbomachine (not shown in the figure).
- the blades shown in FIGS. 2a and 2b are not representative of the geometry adopted by the invention.
- Each blade 22 comprises a leading edge 23, and a trailing edge 24, extending between a radially inner end 25, called the root of the blade, and a radially outer end 26, called the head of the blade.
- the leading edge 23 and the trailing edge 24 delimit an intrados face I and an extrados face E.
- X is the direction of the axis of the turbomachine or motor axis
- Y is the tangential direction relative to the ring 29 of the rectifier
- Z is the radial direction, in which extends every dawn. Advanced leading edge at dawn
- FIG. 3a there is shown the position of the leading edge at all points of the blade, relative to the direction X of the motor axis. This curve is called a leading edge trace.
- the ordinate represents the height position of the leading edge relative to the total height of the blade
- the abscissa represents the offset the leading edge, as a percentage of the height of the blade, relative to the position E of the leading edge at the leading end 26 of the blade.
- the position A of the leading edge at the foot end 25 of the blade is offset upstream, in the direction X of the motor axis, relative to the position E of the edge of the blade. attack at the head end 26 of dawn.
- This offset is greater than 10% of the height of the dawn. It is preferably between 10 and 20% of the height of the blade, advantageously between 12 and 20% of the height of the blade, and more preferably between 15 and 20%.
- This advance of the foot of the blade allows a better distribution of the air flow on the height of the blade.
- This distribution of the value of the air flow rate on the blade is represented in FIG. 4a, along the height of the blade for a part extending between the root tip of the blade and 50% from the height of it.
- each blade 22 conventionally consists of a stack of sections of blades 27 that are successive in the height of the blade.
- FIG. 3b there is shown the tangential stacking curve of a blade constituted by the position, relative to the tangential direction Y at the ring 29, of the centers of gravity of the blade sections 27.
- This curve is also dimensioned by the height of the blade, the origin being taken at the position A 'of the center of gravity of the section at the bottom of the blade.
- the positive values on the abscissa correspond to a shift towards the upper surface of the dawn, while the negative values correspond to an offset towards the intrados of the dawn.
- the tangential stacking curve of a blade is a constantly increasing curve to the upper surface of the blade.
- This tangential stack towards the extrados makes it possible to reduce the detachments of the flow of air at the top of the blade, to increase the speed and the flow rate at the bottom of the blade, and to reduce the pressure losses in this zone.
- the losses at the blade root can be reduced by almost 2% thanks to the proposed blade profile.
- the advance of the leading edge of a blade at the blade root is combined with a tangential stack of the blade towards the upper surface to combine the effects obtained and to minimize the pressure losses.
- the tangential stacking curve of the blade advantageously has an accentuated slope, in the vicinity of the head of the blade, relative to the rest of the blade.
- the curve has a portion CD ', situated in a region between 90 and 100% of the height of the blade, such as the average slope of this part, that is to say the average slope of the segment CD 'is at least 1, 2 times that of the portion B'C between 30% and 90% of the height of the blade.
- a flow of air crossing a blade has been simulated whose tangential stacking is towards the intrados, and a flow of air crossing a blade whose tangential stacking is towards the extrados, with accentuation of the slope at the top of 'dawn.
- FIGS. 5a and 5b each represent a blade 22 and the separation zone ZD of the airflow at the head of the blade. Note that for the first blade, in Figure 5a, this separation zone ZD is much larger than the second, according to the invention, of Figure 5b.
- the trace of the leading edge of a blade furthermore has a portion situated downstream from the position E of the leading edge at the blade head with respect to the X direction of the blade. motor axis.
- a point C of the leading edge located at the right of the position E of the leading edge of the blade. This point is advantageously situated between 60 and 80% of the height of the blade, so that the part situated downstream of the position E extends itself in the zone between 60 and 100% of the height of the blade. 'dawn.
- Point C may be more preferably between 65 and 75% of the height of the blade.
- This part of the blade in the vicinity of the head of the blade is therefore further away from the turbine engine fan than the rest of the blade, which limits acoustic disturbances at the head of the blade.
- the proposed geometry thus makes it possible to improve the performance of a stator blade and to reduce the detachments of the air flow at the head of the blade.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Geometry (AREA)
- Structures Of Non-Positive Displacement Pumps (AREA)
- Turbine Rotor Nozzle Sealing (AREA)
Abstract
Description
Claims
Priority Applications (7)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CA2878149A CA2878149C (fr) | 2012-07-06 | 2013-06-28 | Redresseur de turbomachine avec aubes a profil ameliore |
EP13744667.0A EP2870367A1 (fr) | 2012-07-06 | 2013-06-28 | Redresseur de turbomachine avec aubes à profil ameliore |
US14/413,042 US20150226074A1 (en) | 2012-07-06 | 2013-06-28 | Turbomachine guide vanes with improved vane profile |
BR112015000075A BR112015000075A2 (pt) | 2012-07-06 | 2013-06-28 | retificador de uma turbomáquina, e, turbomáquina |
RU2015103931A RU2632350C2 (ru) | 2012-07-06 | 2013-06-28 | Выпрямитель газотурбинного двигателя с лопатками улучшенного профиля |
CN201380036009.1A CN104411982B (zh) | 2012-07-06 | 2013-06-28 | 具有改进叶片轮廓的涡轮机引导叶片 |
US15/618,904 US10844735B2 (en) | 2012-07-06 | 2017-06-09 | Turbomachine guide vanes with improved vane profile |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR1256532A FR2993020B1 (fr) | 2012-07-06 | 2012-07-06 | Redresseur de turbomachine avec aubes a profil ameliore |
FR1256532 | 2012-07-06 |
Related Child Applications (2)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US14/413,042 A-371-Of-International US20150226074A1 (en) | 2012-07-06 | 2013-06-28 | Turbomachine guide vanes with improved vane profile |
US15/618,904 Continuation US10844735B2 (en) | 2012-07-06 | 2017-06-09 | Turbomachine guide vanes with improved vane profile |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2014006310A1 true WO2014006310A1 (fr) | 2014-01-09 |
Family
ID=46826796
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/FR2013/051531 WO2014006310A1 (fr) | 2012-07-06 | 2013-06-28 | Redresseur de turbomachine avec aubes à profil ameliore |
Country Status (7)
Country | Link |
---|---|
US (2) | US20150226074A1 (fr) |
EP (1) | EP2870367A1 (fr) |
BR (1) | BR112015000075A2 (fr) |
CA (1) | CA2878149C (fr) |
FR (1) | FR2993020B1 (fr) |
RU (1) | RU2632350C2 (fr) |
WO (1) | WO2014006310A1 (fr) |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US10233758B2 (en) | 2013-10-08 | 2019-03-19 | United Technologies Corporation | Detuning trailing edge compound lean contour |
CN115013089B (zh) * | 2022-06-09 | 2023-03-07 | 西安交通大学 | 宽工况后向遮挡的涡轮后机匣整流支板设计方法及系统 |
Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO1995017584A1 (fr) * | 1993-12-22 | 1995-06-29 | Alliedsignal Inc. | Ensemble aube de stator inserable |
FR2828709A1 (fr) | 2001-08-17 | 2003-02-21 | Snecma Moteurs | Aube de redresseur |
US20050008494A1 (en) | 2003-03-28 | 2005-01-13 | Ishikawajima-Harima Heavy Industries Co., Ltd. | Aircraft engine, fan thereof and fan stator vane thereof |
EP1921007A2 (fr) * | 2006-11-10 | 2008-05-14 | Rolls-Royce plc | Agencement d'assemblage de moteur à turbine |
EP2267273A2 (fr) * | 2009-06-25 | 2010-12-29 | Rolls-Royce plc | Surface portante à cambrure réglable |
Family Cites Families (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US6195983B1 (en) * | 1999-02-12 | 2001-03-06 | General Electric Company | Leaned and swept fan outlet guide vanes |
US6331100B1 (en) * | 1999-12-06 | 2001-12-18 | General Electric Company | Doubled bowed compressor airfoil |
US7547186B2 (en) * | 2004-09-28 | 2009-06-16 | Honeywell International Inc. | Nonlinearly stacked low noise turbofan stator |
RU2350787C2 (ru) * | 2007-04-13 | 2009-03-27 | Открытое акционерное общество "Научно-производственное объединение "Сатурн" | Высокопроизводительный малошумящий компрессор низкого давления газотурбинного двигателя с высокой степенью двухконтурности |
-
2012
- 2012-07-06 FR FR1256532A patent/FR2993020B1/fr active Active
-
2013
- 2013-06-28 WO PCT/FR2013/051531 patent/WO2014006310A1/fr active Application Filing
- 2013-06-28 CA CA2878149A patent/CA2878149C/fr active Active
- 2013-06-28 BR BR112015000075A patent/BR112015000075A2/pt not_active IP Right Cessation
- 2013-06-28 EP EP13744667.0A patent/EP2870367A1/fr not_active Withdrawn
- 2013-06-28 RU RU2015103931A patent/RU2632350C2/ru active
- 2013-06-28 US US14/413,042 patent/US20150226074A1/en not_active Abandoned
-
2017
- 2017-06-09 US US15/618,904 patent/US10844735B2/en active Active
Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO1995017584A1 (fr) * | 1993-12-22 | 1995-06-29 | Alliedsignal Inc. | Ensemble aube de stator inserable |
FR2828709A1 (fr) | 2001-08-17 | 2003-02-21 | Snecma Moteurs | Aube de redresseur |
US20050008494A1 (en) | 2003-03-28 | 2005-01-13 | Ishikawajima-Harima Heavy Industries Co., Ltd. | Aircraft engine, fan thereof and fan stator vane thereof |
EP1921007A2 (fr) * | 2006-11-10 | 2008-05-14 | Rolls-Royce plc | Agencement d'assemblage de moteur à turbine |
EP2267273A2 (fr) * | 2009-06-25 | 2010-12-29 | Rolls-Royce plc | Surface portante à cambrure réglable |
Also Published As
Publication number | Publication date |
---|---|
EP2870367A1 (fr) | 2015-05-13 |
FR2993020A1 (fr) | 2014-01-10 |
US10844735B2 (en) | 2020-11-24 |
CN104411982A (zh) | 2015-03-11 |
BR112015000075A2 (pt) | 2017-06-27 |
CA2878149C (fr) | 2020-10-27 |
FR2993020B1 (fr) | 2016-03-18 |
US20170276004A1 (en) | 2017-09-28 |
CA2878149A1 (fr) | 2014-01-09 |
US20150226074A1 (en) | 2015-08-13 |
RU2015103931A (ru) | 2016-08-27 |
RU2632350C2 (ru) | 2017-10-04 |
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