WO2016113495A1 - Ensemble de combustion de turbomachine - Google Patents
Ensemble de combustion de turbomachine Download PDFInfo
- Publication number
- WO2016113495A1 WO2016113495A1 PCT/FR2016/050047 FR2016050047W WO2016113495A1 WO 2016113495 A1 WO2016113495 A1 WO 2016113495A1 FR 2016050047 W FR2016050047 W FR 2016050047W WO 2016113495 A1 WO2016113495 A1 WO 2016113495A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- injection
- wheel
- flame tube
- injector
- combustion assembly
- Prior art date
Links
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23R—GENERATING COMBUSTION PRODUCTS OF HIGH PRESSURE OR HIGH VELOCITY, e.g. GAS-TURBINE COMBUSTION CHAMBERS
- F23R3/00—Continuous combustion chambers using liquid or gaseous fuel
- F23R3/28—Continuous combustion chambers using liquid or gaseous fuel characterised by the fuel supply
- F23R3/38—Continuous combustion chambers using liquid or gaseous fuel characterised by the fuel supply comprising rotary fuel injection means
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23D—BURNERS
- F23D11/00—Burners using a direct spraying action of liquid droplets or vaporised liquid into the combustion space
- F23D11/04—Burners using a direct spraying action of liquid droplets or vaporised liquid into the combustion space the spraying action being obtained by centrifugal action
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23R—GENERATING COMBUSTION PRODUCTS OF HIGH PRESSURE OR HIGH VELOCITY, e.g. GAS-TURBINE COMBUSTION CHAMBERS
- F23R3/00—Continuous combustion chambers using liquid or gaseous fuel
- F23R3/42—Continuous combustion chambers using liquid or gaseous fuel characterised by the arrangement or form of the flame tubes or combustion chambers
- F23R3/46—Combustion chambers comprising an annular arrangement of several essentially tubular flame tubes within a common annular casing or within individual casings
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23R—GENERATING COMBUSTION PRODUCTS OF HIGH PRESSURE OR HIGH VELOCITY, e.g. GAS-TURBINE COMBUSTION CHAMBERS
- F23R3/00—Continuous combustion chambers using liquid or gaseous fuel
- F23R3/42—Continuous combustion chambers using liquid or gaseous fuel characterised by the arrangement or form of the flame tubes or combustion chambers
- F23R3/52—Toroidal combustion chambers
-
- 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
- F05D2240/35—Combustors or associated equipment
Definitions
- the invention relates to the field of combustion assemblies for turbomachines, and more particularly the fuel injection devices in the combustion chamber of these assemblies.
- a turbomachine generally comprises, from upstream to downstream, in the direction of flow of the gases, a fan, one or more stages of compressors, for example a high pressure compressor and a low pressure compressor, a combustion chamber, one or more turbine stages, for example a high pressure turbine and a low pressure turbine, and a gas exhaust nozzle.
- Figure 1 attached schematically illustrates a longitudinal sectional view of the combustion assembly 1 of an embodiment of a turbomachine according to the prior art.
- the combustion assembly 1 is in upstream communication (on the left in FIG. 1) with a compressor (not shown), which supplies it with pressurized air via a diffuser, and is connected in downstream, to a distributor itself connected to a high pressure turbine (not shown in the figures).
- the combustion assembly 1 is delimited by an outer casing 2 and an inner casing 3 annular, extending one inside the other along a longitudinal axis X-X '.
- the combustion assembly 1 comprises a "flame tube” or “combustion chamber” 4 which is the seat of the combustion of the gases.
- the flame tube 4 is arranged between the two outer casings 2 and inner 3 and is provided with walls of revolution before 5 and rear 6 which extend globally one inside the other around the longitudinal axis XX '.
- the front and rear walls 5 and 6 have an annular bent shape and are connected, upstream, to the inner casing 3, on either side of a centrifugal injection wheel 7, and downstream, to the outer casing 2 and to the inner casing 3 respectively.
- This type of flame tube is called "annular" and extends around the longitudinal axis XX 'of the combustion assembly 1.
- the front and rear walls 5 and 6 are generally arranged at a distance from the outer and inner casings 2 and 3, so as to form an annular air supply duct 8 surrounding the flame tube 4.
- the flame tube 4 comprises several successive zones from upstream to downstream, namely a primary zone 9 into which the injection wheel 7 opens and an intermediate zone 10 at the elbow of the tube, in which there are several dilution pipes 1 1.
- the air enters the flame tube 4 through a plurality of air inlet ports 12 formed through the front wall 5 and a plurality of air inlet openings 13 formed through the rear wall 6, facing a portion of the primary zone 9.
- the centrifugal injection wheel 7 is mounted on a drive shaft 15, and is rotated by it.
- the drive shaft 15 is coaxial with the longitudinal axis X-X 'of the combustion assembly 1.
- the combustion assembly 1 is furthermore equipped with a plurality of injectors 16 distributed regularly around the drive shaft 15. These injectors 16 are arranged between the drive shaft 15 and the inner housing 3 which also constitutes the bottom (or “inner side") of the flame tube 4 (relative to the longitudinal axis X-X ').
- Each injector 16 is arranged to project fuel axially, (see arrow i), parallel to the longitudinal axis X-X ', on the front face 17 of the injection wheel 7, that is to say the face facing upstream of the combustion assembly 1.
- the annular peripheral rim 18 of the wheel 7 is pierced at regular intervals, with a plurality of radially oriented slots 19.
- these injectors are not very sensitive to the viscosity of the fuel, which is itself related to the type of fuel or to the ambient temperature,
- the casing of the turbine is of a simple structure and of low mass and consequently of low cost
- this type of combustion assembly also has drawbacks, related to the position of the injectors, which are placed under the flame tube, near the motor shaft and thus towards the inside of the combustion assembly.
- turbomachines are used with increasingly high temperature rise cycles to reduce their specific consumption, which causes a coking (that is to say, solidification) of the fuel. It is therefore necessary to clean more frequently the injection system and the many labyrinth seals arranged around, to avoid malfunctions (such as for example the blocking of the shaft by the solidified fuel (“coke”) , premature wear of hot parts due to poor fuel distribution, or failure to start the engine due to blockage of the fuel supply).
- the diameter of the injection wheel is important, since it is necessary to leave sufficient space between the drive shaft 15 and the edge of the wheel 7, to arrange the injectors 16. As a result, this injection wheel has a large mass and is subjected to high stresses due to the speed of rotation.
- US 4,040,251 discloses a combustion assembly of the aforementioned type, wherein the injector and its feed tube are arranged in the thickness of the inner housing and the bottom of the flame tube.
- the spray orifice of the injector opens into the opening in the bottom for the passage of the injection wheel.
- the invention aims to provide a combustion assembly of the aforementioned type, which retains the above advantages, but which solves the disadvantages mentioned above.
- the object of the invention is notably to propose a combustion assembly in which the nozzle or injectors of the flame torch are easily removable, without it being necessary to dismantle the whole of the turbomachine and to remove it from the fuel cell. the helicopter.
- turbomachine combustion assembly comprising:
- annular flame tube comprising a front wall provided with an upstream zone facing upstream of the combustion assembly, a rear wall provided with an upstream zone facing upstream of the combustion assembly and a bottom disposed opposite a motor shaft,
- an injection wheel driven in rotation by said drive shaft coaxial with the longitudinal axis XX 'of the combustion assembly, this injection wheel partially projecting into the flame tube through its bottom, and being configured for spraying fuel into the flame tube by centrifugation,
- At least one injector capable of depositing a film of fuel, on said injection wheel.
- said injector is disposed through said upstream zone of the front wall or through said upstream zone of the rear wall of the flame tube and so that its orifice injection opens into this tube, facing the portion of said injection wheel which is in said flame tube.
- said injector is disposed through the upstream zone of the front wall of the flame tube, said injection wheel is bent at its periphery, upstream of the assembly of combustion, so as to have an annular rim, this annular flange is pierced with several radial injection ports and said injector opens into the flame tube facing the front face of the annular peripheral portion of said injection wheel which is found in the flame tube.
- said injector is disposed through the upstream zone of the rear wall of the flame tube, said injection wheel is bent at its periphery, downstream of the assembly of combustion, so as to have an annular rim, this annular flange is pierced with several radial injection ports and said injector opens into the flame tube opposite the rear face of the annular peripheral portion of said injection wheel which is found in the flame tube.
- said injection wheel is solid and has a radial annular surface for receiving the fuel which protrudes into the flame tube and the injector opens into the flame tube, opposite of this annular face of receiving the fuel.
- the injector is oriented so as to project the fuel tangentially on said fuel receiving face of the injection wheel.
- the fuel receiving face of the injection wheel forms an angle ⁇ with the axis of the injection orifice of the injector, this angle (a) being between 90 ° and 180 ° .
- the axis of the injection orifice of the injector extends in a plane which both includes the axis of the injection wheel and is perpendicular to the median plane of the wheel perpendicular to the axis of the injection wheel.
- the axis of the injection orifice of the injector is not perpendicular to the median plane of the wheel perpendicular to the axis of the injection wheel. 'injection.
- the invention also relates to a turbomachine comprising a combustion assembly as mentioned above.
- FIG. 1 is a longitudinal sectional view of a combustion assembly according to an embodiment of the prior art
- FIGS. 2 and 3 are diagrammatic views, in longitudinal section, of two embodiments of a combustion assembly of a turbomachine according to the invention
- FIG. 4 is a schematic view of the combustion assembly, taken along a sectional plane represented by the line IV-IV in FIG.
- FIG. 2 is a diagram of a combustion assembly 20 which is simplified with respect to that of Figure 1, since it represents only the flame tube and the injection assembly.
- the flame tube 21 comprises a bottom 22 (or inner side of the flame tube), a front wall 23 and a rear wall 24.
- the bottom 22 connects the front wall 23 and the rear wall 24.
- the flame tube 21 is annular and extends around the longitudinal axis X-X 'of the combustion assembly 20.
- the bottom 22 is pierced with an opening 25 allowing the passage of a portion of the injection wheel 26 inside the flame tube 21. in other words, the injection wheel 26 is partly protruded in the bottom of the flame tube 21.
- the front wall 23 has an upstream zone 230, facing upstream of the combustion assembly and the turbomachine (on the left in FIG. 2), pierced with a plurality of air inlet orifices 27, facing the primary combustion zone 28 of the flame tube.
- the rear wall 24 has an upstream zone 240, facing upstream of the combustion assembly and the turbomachine, pierced with a plurality of air inlet orifices 29, opposite the zone primary combustion 28 of the flame tube.
- the injection wheel 26 is rotated by the drive shaft 30, coaxial with the longitudinal axis X-X '. It has a front face 31, facing upstream of the combustion assembly and an opposite rear face 32, facing downstream.
- This injection wheel 26 is bent at its periphery, so as to define an annular peripheral rim 33, pierced, preferably at regular intervals, by slots 34 oriented radially with respect to the longitudinal axis XX 'of the assembly. 20.
- These lights 34 may be orifices or slots.
- the injection wheel 26 penetrates further inside the flame tube 21 since not only is its annular peripheral rim 33 therein in full, but also an annular peripheral portion 260 of the disk which constitutes the wheel 26. This annular portion 260 is located in the extension of the rim 33.
- the inner face of the annular flange 33 is thus at a distance D1 from the bottom 22 of the flame tube 21 which is itself facing the drive shaft 30.
- the combustion assembly also comprises one or more injectors 35, only one of which is visible in FIG. 2.
- This injector 35 is connected to a fuel supply tube 36 itself connected to a fuel source not shown in the figure.
- the injector 35 has an injection orifice 37.
- the injector 35 is arranged to pass through the front wall 23 of the flame tube 21, preferably its upstream zone 230, through which the air inlet orifices are formed. 27.
- this injector 35 is arranged in such a way that its injection orifice 37 opens inside the flame tube 21.
- the distance D1 is sufficient to allow the passage of the fuel jet coming from the injection end 37 of the injector 35.
- the operation of the injection is as follows.
- the fuel from the injector 35 exits through the injection port 37 and is projected against the front face 31 of the portion 260 of the injection wheel 26, where it forms a film F of fuel.
- flame tube facilitates disassembly.
- its configuration will be adapted to provide for its extraction through this front wall 23.
- the injection wheel 26 has a smaller diameter than that of the state of the art shown in FIG. 1, since the bottom 22 of the flame tube 21 can be arranged closer to the In this respect, it will be noted that FIGS. 1 and 2 are not shown on the same scale.
- the injection wheel 26 being of smaller diameter, its mass is lower than that of a wheel of the state of the art and its mechanical strength is also improved.
- the injection wheel bears the reference 41. It is rotated by the drive shaft 30.
- peripheral rim 42 is flared, so as to define an annular radial face 43, preferably plane, for receiving the film F of fuel.
- the injector 35 is arranged so that its injection orifice 37 faces this face 43.
- the axis of the injection orifice 37 forms an angle ⁇ (alpha) with the fuel receiving face 43.
- This angle a is advantageously between 90 ° and 180 °. When it is 180 °, the injection of fuel is tangent to the face 43.
- the axis of the injection port 37 of an injector 35 extends in a plane P1 which is both perpendicular to P and which includes the axis of the drive shaft 30.
- the plane P1 corresponds to the plane of the sheet of the figure and in Figure 4, the plane P1 is represented by a line in dashed lines.
- this axis is referenced X1 - ⁇ .
- the injector 35 is advantageously introduced less deeply into the flame tube 21 than in the embodiment of FIG. 2, since it is not necessary for its injection orifice to reach the area under the annular flange 33 of the injection wheel. It is sufficient that the injector allows the projection of fuel on the face 43. The disassembly of the injector 35 is thus facilitated.
- the fuel film F undergoes the centrifugal force generated by the wheel 41 and is atomized in the form of fuel droplets G.
- This embodiment of the invention allows to have an injection wheel 41 which has a structure of great simplicity and good mechanical strength, since it is not pierced by through holes. Its diameter is also smaller than in the state of the art, since the bottom 22 of the flame tube 21 can be brought closer to the drive shaft 30. Finally, the combustion is located substantially on one side of the wheel. injection 41, here on the left of Figure 3.
- the injector 35 may be disposed through the rear wall 24 of the flame tube 21, preferably through its upstream zone 240.
- the injection wheel 26 is made according to the embodiment of FIG. 2, its annular rim 33 is turned downstream of the combustion assembly 20 and the fuel injection is done on the rear face 32 of the wheel.
- the flame tube 21 is made in several parts, assembled with a flange 50 which facilitates disassembly.
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Fuel-Injection Apparatus (AREA)
- Nozzles For Spraying Of Liquid Fuel (AREA)
- Combustion Methods Of Internal-Combustion Engines (AREA)
Abstract
Description
Claims
Priority Applications (7)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
RU2017127312A RU2017127312A (ru) | 2015-01-15 | 2016-01-12 | Узел камеры сгорания газотурбинного двигателя |
KR1020177021316A KR20170104517A (ko) | 2015-01-15 | 2016-01-12 | 터빈 엔진 연소 조립체 |
EP16701838.1A EP3245452A1 (fr) | 2015-01-15 | 2016-01-12 | Ensemble de combustion de turbomachine |
CA2971988A CA2971988A1 (fr) | 2015-01-15 | 2016-01-12 | Ensemble de combustion de turbomachine |
CN201680005937.5A CN107208897A (zh) | 2015-01-15 | 2016-01-12 | 涡轮发动机燃烧组件 |
US15/543,563 US20170370591A1 (en) | 2015-01-15 | 2016-01-12 | Turbine engine combustion assembly |
JP2017537358A JP2018508733A (ja) | 2015-01-15 | 2016-01-12 | タービンエンジン燃焼アセンブリ |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR1550314 | 2015-01-15 | ||
FR1550314A FR3031767B1 (fr) | 2015-01-15 | 2015-01-15 | Ensemble de combustion de turbomachine. |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2016113495A1 true WO2016113495A1 (fr) | 2016-07-21 |
Family
ID=53404641
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/FR2016/050047 WO2016113495A1 (fr) | 2015-01-15 | 2016-01-12 | Ensemble de combustion de turbomachine |
Country Status (9)
Country | Link |
---|---|
US (1) | US20170370591A1 (fr) |
EP (1) | EP3245452A1 (fr) |
JP (1) | JP2018508733A (fr) |
KR (1) | KR20170104517A (fr) |
CN (1) | CN107208897A (fr) |
CA (1) | CA2971988A1 (fr) |
FR (1) | FR3031767B1 (fr) |
RU (1) | RU2017127312A (fr) |
WO (1) | WO2016113495A1 (fr) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP3719401A1 (fr) * | 2019-04-04 | 2020-10-07 | Raytheon Technologies Corporation | Chambre de combustion non axisymétrique pour une durabilité améliorée |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2705401A (en) * | 1950-12-02 | 1955-04-05 | Armstrong Siddeley Motors Ltd | Vaporising means for liquid fuel combustion chambers |
DE958165C (de) * | 1942-08-28 | 1957-07-11 | Karl Leist Dr Ing | Brennkammer fuer kontinuierliche Verbrennung |
US4040251A (en) | 1975-06-04 | 1977-08-09 | Northern Research And Engineering Corporation | Gas turbine combustion chamber arrangement |
US20120067051A1 (en) * | 2009-12-29 | 2012-03-22 | Oechsle Victor L | Gas turbine engine and combustor |
Family Cites Families (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN86200959U (zh) * | 1986-02-21 | 1986-12-03 | 中国人民解放军第五七○六工厂 | 双重雾化内燃式重油燃烧器 |
CN103062797B (zh) * | 2013-01-10 | 2014-12-10 | 北京航空航天大学 | 一种用于高高空低温低压环境下可靠点火的燃烧室中心旋流补氧结构 |
CN103411217B (zh) * | 2013-08-10 | 2017-02-08 | 东营玺诺石油科技有限公司 | 一种燃油自动点火燃烧机 |
-
2015
- 2015-01-15 FR FR1550314A patent/FR3031767B1/fr active Active
-
2016
- 2016-01-12 US US15/543,563 patent/US20170370591A1/en not_active Abandoned
- 2016-01-12 JP JP2017537358A patent/JP2018508733A/ja active Pending
- 2016-01-12 CN CN201680005937.5A patent/CN107208897A/zh active Pending
- 2016-01-12 EP EP16701838.1A patent/EP3245452A1/fr not_active Withdrawn
- 2016-01-12 WO PCT/FR2016/050047 patent/WO2016113495A1/fr active Application Filing
- 2016-01-12 CA CA2971988A patent/CA2971988A1/fr not_active Abandoned
- 2016-01-12 KR KR1020177021316A patent/KR20170104517A/ko unknown
- 2016-01-12 RU RU2017127312A patent/RU2017127312A/ru not_active Application Discontinuation
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE958165C (de) * | 1942-08-28 | 1957-07-11 | Karl Leist Dr Ing | Brennkammer fuer kontinuierliche Verbrennung |
US2705401A (en) * | 1950-12-02 | 1955-04-05 | Armstrong Siddeley Motors Ltd | Vaporising means for liquid fuel combustion chambers |
US4040251A (en) | 1975-06-04 | 1977-08-09 | Northern Research And Engineering Corporation | Gas turbine combustion chamber arrangement |
US20120067051A1 (en) * | 2009-12-29 | 2012-03-22 | Oechsle Victor L | Gas turbine engine and combustor |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP3719401A1 (fr) * | 2019-04-04 | 2020-10-07 | Raytheon Technologies Corporation | Chambre de combustion non axisymétrique pour une durabilité améliorée |
Also Published As
Publication number | Publication date |
---|---|
CA2971988A1 (fr) | 2016-07-21 |
KR20170104517A (ko) | 2017-09-15 |
CN107208897A (zh) | 2017-09-26 |
FR3031767A1 (fr) | 2016-07-22 |
EP3245452A1 (fr) | 2017-11-22 |
US20170370591A1 (en) | 2017-12-28 |
JP2018508733A (ja) | 2018-03-29 |
FR3031767B1 (fr) | 2018-10-19 |
RU2017127312A (ru) | 2019-02-20 |
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