WO2016156741A1 - Module de soufflante de turbomachine comprenant un système de dégivrage d'un cône d'entrée de turbomachine et procédé de dégivrage - Google Patents
Module de soufflante de turbomachine comprenant un système de dégivrage d'un cône d'entrée de turbomachine et procédé de dégivrage Download PDFInfo
- Publication number
- WO2016156741A1 WO2016156741A1 PCT/FR2016/050719 FR2016050719W WO2016156741A1 WO 2016156741 A1 WO2016156741 A1 WO 2016156741A1 FR 2016050719 W FR2016050719 W FR 2016050719W WO 2016156741 A1 WO2016156741 A1 WO 2016156741A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- turbomachine
- inlet cone
- conduit
- downstream
- outer tube
- Prior art date
Links
- 238000000034 method Methods 0.000 title claims abstract description 9
- 238000011144 upstream manufacturing Methods 0.000 claims abstract description 22
- 238000010257 thawing Methods 0.000 claims description 12
- 238000007789 sealing Methods 0.000 claims description 4
- 210000003462 vein Anatomy 0.000 description 9
- 230000015572 biosynthetic process Effects 0.000 description 6
- 238000005096 rolling process Methods 0.000 description 4
- 239000003638 chemical reducing agent Substances 0.000 description 3
- 238000005461 lubrication Methods 0.000 description 3
- 238000002485 combustion reaction Methods 0.000 description 2
- 239000002131 composite material Substances 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 230000008033 biological extinction Effects 0.000 description 1
- 230000015556 catabolic process Effects 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 238000013016 damping Methods 0.000 description 1
- 238000006731 degradation reaction Methods 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 230000001050 lubricating effect Effects 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 230000014759 maintenance of location Effects 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 238000009423 ventilation Methods 0.000 description 1
Classifications
-
- 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
- F02C7/04—Air intakes for gas-turbine plants or jet-propulsion plants
- F02C7/047—Heating to prevent icing
-
- 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
-
- 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
- B64D15/00—De-icing or preventing icing on exterior surfaces of aircraft
- B64D15/02—De-icing or preventing icing on exterior surfaces of aircraft by ducted hot gas or liquid
-
- 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
- F05D2260/60—Fluid transfer
- F05D2260/608—Aeration, ventilation, dehumidification or moisture removal of closed spaces
-
- 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
- F05D2260/60—Fluid transfer
- F05D2260/609—Deoiling or demisting
-
- 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 the general field of aeronautical turbomachines.
- the invention more particularly relates to a system for deicing an inlet cone of a fan-cooled aerospace turbomachine.
- FIG. 1 shows a simplified section of a fan-cooled aerospace turbomachine centered on a longitudinal axis X-X, and
- vanes of a compressor 6 of the primary vein 7 located on the shroud of the fan 8, and can even be ingested in the primary stream 7 and reach the combustion chamber 9 with the risk of extinction of the combustion that entails.
- Document EP 1 840 028 discloses a de-icing system for a turbine engine inlet cone in which hot air taken from a bearing chamber of the turbomachine is brought to the inlet cone in order to warm up.
- the device described in this document provides in particular the evacuation of the hot air delivered to the inlet cone in the primary and secondary veins of the turbomachine through openings located at the inlet cone.
- the hot air from the deicing system can be ingested by the primary stream, which can degrade the overall performance of the turbomachine.
- droplets of oil from a bearing housing lubrication may be present in this hot air evacuated. If these droplets are then ingested in the primary vein of the turbomachine, they can cause risks of corrosion / oxidation of the metal parts present in the primary vein and a degradation of the overall performance of the turbomachine.
- an aeronautical turbomachine fan module comprising a deicing system for an inlet cone, said deicing system comprising a sleeve placed inside a interior space delimited upstream by the inlet cone, said sheath comprising a first duct having at least one hot air inlet, said first duct being configured to convey hot air from a chamber -palier the turbine engine to a wall of the inlet cone to heat it from the inside.
- a second conduit having at least one outlet located downstream of the inlet of the first conduit, said second conduit being configured to evacuate the air from the first conduit downstream of the the turbomachine.
- blower module is meant the module of the turbomachine which includes the blower, the low pressure compressor (sometimes called “booster”), the drive shaft of the blower, and the blower housing.
- a defrosting system which makes it possible to recover the hot air which has been charged with the heat generated by the rolling bearings (for example with balls or with rollers) and possibly a reducer present in a lubrication chamber-bearing, and route it through the first conduit to the interior of the wall of the inlet cone to warm it.
- This routing is made partly possible thanks to the pressure that already prevails around the enclosure-bearing to confine the oil in the enclosure.
- the deicing system according to the invention therefore does not require additional device for pressurizing the air and therefore does not alter the performance of the turbomachine.
- the de-icing system is active when the turbomachine is in operation, no additional control being required in particular.
- the sheath of the deicing system according to the invention further comprises a second duct whose outlet is further downstream (with respect to the direction of flow of the gas flows in the turbomachine) than the inlet of the first duct.
- the sleeve being located in an interior space delimited by the inlet cone on the one hand, and by the drive shaft of the blower on the other hand, this second duct makes it possible to evacuate the air which has cooled at the inlet cone downstream of the turbomachine.
- the air thus cooled is evacuated by circulating for example in a low pressure rotor shaft, and can be used again to fulfill other functions, in particular to pressurize another bearing chamber, or to cool parts of the turbomachine further downstream like a turbine disk.
- the sheath comprises: an inner tube centered on a longitudinal axis of the turbomachine;
- the first duct being delimited radially between the inner tube and the outer tube and closed at a downstream end by an annular flange extending radially between the inner tube and the outer tube, the second conduit being defined by the interior of the inner tube.
- the deicing system further comprises at least one de-oiling system between the bearing chamber and the first conduit.
- at least one de-oiling system between the bearing chamber and the first conduit.
- the de-oiling system comprises at least one chimney sealingly mounted at one end on the outer tube opposite an inlet of the first duct to open into the latter, said chimney being intended to open out at an end. other end in the bearing chamber.
- the inner tube and the outer tube each have a circular cross section whose diameter is increasing from upstream to downstream.
- the oil droplets that may still be present in the air flowing in the ducts are, thanks to the centrifugal force, condensed on the walls of the tubes and brought downstream so that the oil thus recovered can return to a bearing chamber. This avoids oil losses and oil discharges outside the turbomachine.
- the outer tube may be sealingly attached to the inlet cone by a flange located at an upstream end of said outer tube.
- the fan module further comprises a drive shaft of the fan delimiting the interior space downstream, the de-icing system further comprising a sealing collar ensuring a sealed retention of the sleeve within the drive shaft of the blower.
- a sealing collar has the particular function of ensuring that the sleeve is held in position within the drive shaft of the fan.
- the sealed connection makes it possible to prevent air containing traces of oil from escaping from the ducts. defrosting and exhaust air, and also ensures the damping of vibrations that can be generated by the rotation of the sleeve.
- the invention also relates to a method of deicing an aeronautical turbine engine inlet cone comprising the routing by a first hot air duct taken inside a bearing chamber to a wall of the inlet cone. of the turbomachine to heat said inlet cone from the inside.
- the method further comprises the evacuation by a second duct of the air coming from the first duct from the wall of the inlet cone downstream of the turbomachine, the air being evacuated from the upstream downstream by circulating inside at least one rotor shaft of the turbomachine.
- the method further comprises de-oiling the hot air taken from the inside of the bearing chamber.
- the air discharged through the second duct is used to cool at least one member of the turbomachine.
- a member may for example be a gearbox, a low pressure rotor shaft, a turbine disk.
- FIG. 1 already described is a schematic sectional view of an upstream portion of a turbomachine illustrating the damage that may be caused by the formation of ice on the inlet cone,
- FIG. 2 is a diagrammatic sectional view of an upstream part of a turbomachine comprising a deicing system according to the invention
- FIG. 3 is a perspective view of a sheath according to one embodiment of the invention.
- FIG. 4 is a schematic overall view of a turbomachine comprising a deicing system according to another embodiment of the invention.
- the upstream and downstream are defined according to the general direction of flow of air through the turbomachine.
- the turbomachine illustrated in this figure comprises: a blower 3 which is surrounded by a nacelle 8 forming in particular fairing of the blower and which is rotated by a drive shaft 12 which can be mounted on a gearbox 14 (For example an epicyclic gearbox), itself connected to a low pressure rotor shaft 16 of the turbomachine.
- the shafts 12, 16 are concentric and centered on the longitudinal axis X-X of the turbomachine.
- the turbomachine comprises an inlet cone 1 which has the particular function of deflecting the flow of air entering the turbomachine to the blades of the fan 3.
- This air flow is then divided into two: a primary flow (or hot flow) intended to circulate in the primary vein 7, and a secondary flow (or cold flow) intended to circulate in the secondary vein 5.
- the primary stream 7 comprises at its inlet a compressor low pressure 6 (also called “booster") and the secondary vein 5 includes flow guide vanes 4 ("OGV").
- Rolling bearings 18, 20 are provided to support in rotation the different moving parts of the turbomachine. These rolling bearings, as well as the gearbox 14, must be permanently lubricated. This lubrication is performed with a lubricating liquid (eg oil) which is injected into pressurized bearing housings 22.
- the bearing housings 22 are delimited at their ends in particular by seals (not shown). These seals separate the bearing housings of pressurized parts of the turbomachine (the pressurized air being taken most often in the primary vein, for example at a high pressure compressor). The pressurized air present outside these seals thus ensures the confinement of the oil droplets inside these bearing housings.
- a defrosting system 10 is provided to prevent the formation of ice blocks at inlet cone 1 (or at least to reduce its size).
- This defrosting system comprises a sleeve 30 integral in rotation with the drive shaft of the fan 12, an exemplary embodiment of which is illustrated in FIGS. 2 and 3.
- the sheath 30 is disposed inside an interior space of the turbomachine delimited upstream by the inlet cone 1 and downstream by the drive shaft of the fan 12.
- the sheath 30 comprises an inner tube 32 and an outer tube 34 centered on the X-X axis of the turbomachine.
- the outer tube 34 is disposed around the inner tube 32 by being coaxial.
- the sheath 30 also comprises downstream an annular flange 36 which extends substantially radially between the downstream ends of the inner and outer tubes 32 and 34.
- the downstream ends of the tubes 32, 34 are located in the same direction. transverse plane but other configurations are possible if the outer tube has a length different from that of the inner tube.
- a first duct 38 in the sense of the invention is delimited radially between the inner tube 32 and the outer tube 34, and a second duct 40 is defined at least in part by the inside of the inner tube 32. so, the annular flange 36 obstructs the first conduit at its downstream end.
- the first conduit 38 comprises downstream of the intake orifices
- the arrows in FIG. 2 inside the first 38 and second 40 ducts schematically indicate the path traveled by the air in the deicing system 10 from the bearing chamber 22 to the interior of the chamber. low pressure rotor shaft 16.
- the admission of air inside the first duct 38 is done by a deoiling system constituted for example by chimneys 44 opening inside the bearing chamber 22 at one end, and opening against intake ports 42 of the first conduit 38 to another end.
- a deoiling system constituted for example by chimneys 44 opening inside the bearing chamber 22 at one end, and opening against intake ports 42 of the first conduit 38 to another end.
- the principle of this deoiling system is known and will not be described in more detail here, such a system being described for example in the document EP 1 662 095.
- the hot air then travels in the first conduit 38 from downstream to upstream to impact at its outlet the inlet cone 1.
- a heat exchange between the hot air and the inner wall of the cone Inlet 1 is used to heat it and to prevent ice formation (or to reduce its size).
- the second conduit 40 is in communication with the first conduit and has its input at the output of the first conduit 38.
- This second conduit 30 is here centered on the axis XX of the turbomachine, and its output is located further downstream than the air intake orifices 42 of the first duct 38.
- the air from the first duct 38 which has heated the inlet cone 1 takes the second duct 40 while traveling from upstream to downstream and is then discharged downstream of the turbomachine by circulating inside that and, in particular, inside the low-pressure rotor shaft 16. In this way, the air which has cooled down at the inlet cone can be used to cool further downstream portions such as a turbine disk or other housing-bearing.
- the sheath 30 is held radially downstream by the chimneys 44 which bear tightly against the outer tube 34 at the air intake orifices 42 of the first duct 38 (these inlet orifices being formed on a surface annular at the downstream end of the outer tube 34).
- the waterproof support may be achieved for example by means of O-rings.
- the sleeve 30 At its upstream end, the sleeve 30 comprises a flange 46 which makes it possible to fix the sleeve on the inlet cone 1 in a sealed manner.
- flange 46 which makes it possible to fix the sleeve on the inlet cone 1 in a sealed manner.
- other attachment means may be considered.
- a sealing flange 48 is present on the outer surface of the outer tube 34 at an intermediate zone between the flange 46 and the intake orifices 42. This flange is in sealing engagement with the spindle. driving the blower 12 in order to maintain the sheath radially in position in the shaft, to recover any operating stresses and to prevent oil from leaving the defrosting system. Watertight support between the tree
- the collar and the collar can be made in the same manner as before using O-rings.
- the tubes 32, 34 are not cylindrical but rather have a circular cross section whose diameter increases from upstream to downstream.
- the tubes have a truncated cone shape having their top directed upstream of the turbomachine.
- This advantageous arrangement allows, in the case where the air entering the ducts 38, 40 is not completely de-oiled, to recover the oil which will be condensed on the walls of the tubes and to route it to a bearing chamber thanks to the centrifugal force.
- this frustoconical shape prevents oil from stagnating in the conduits 38, 40 and creates undesirable imbalance (the sleeve 30 is rotated by the drive shaft of the fan 12).
- FIG. 3 is a perspective view of the sleeve 30. It can be seen in particular in this figure that the inlet orifices 42 are here constituted by bores made in the outer tube 34 at an annular surface situated at the end downstream of the outer tube.
- the invention is not limited only to turbomachines which comprise a gearbox 14, but the presence of the latter improves the efficiency of the de-icing system since it makes it possible to further increase the temperature of the air present in the enclosure. bearing thanks to the additional friction it generates.
- blower module is meant the module of the turbomachine which comprises, in known manner, the blower 3, the low pressure compressor 6 (sometimes called “booster"), the blower housing 8 and the drive shaft of the blower. the blower 12.
- FIG. 4 shows a schematic overview of an aeronautical turbomachine comprising a fan module equipped with a deicing system 10 'according to another embodiment of the invention.
- the defrosting system 10 ' comprises in particular a sheath 30' having a first duct 38 and a second duct 40, similarly to the deicing system 10 described above.
- the sleeve 30 ' can be attached to the inlet cone 1 via a 46.
- the sleeve 30 here comprises an inner tube 32 and an outer tube 34 concentric and frustoconical shape, the largest diameter of said tubes 32, 34 being located downstream.
- the inner tube 32 of the sheath 30 Unlike the sleeve 30, the inner tube 32 of the sheath 30 'has an upstream end located axially at the same level as the upstream end of the outer tube 34, so that an outlet of the first duct 38 is closer to the cone. Entrance. Thus, the deicing of the inlet cone is further improved.
- the inner tube 32 may protrude from the outer tube 34 upstream, still so that the output of the first conduit 38 is even closer to the inlet cone 1.
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Aviation & Aerospace Engineering (AREA)
- Structures Of Non-Positive Displacement Pumps (AREA)
- Turbine Rotor Nozzle Sealing (AREA)
Abstract
Description
Claims
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US15/561,116 US10760486B2 (en) | 2015-03-31 | 2016-03-31 | Turbine engine fan module including a turbine engine inlet cone de-icing system, and a de-icing method |
GB1715603.5A GB2553058B (en) | 2015-03-31 | 2016-03-31 | Turbine engine blower module, including a turbine engine inlet cone de-icing system and de-icing method |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR1552705 | 2015-03-31 | ||
FR1552705A FR3034401B1 (fr) | 2015-03-31 | 2015-03-31 | Systeme et procede de degivrage d'un cone d'entree de turbomachine |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2016156741A1 true WO2016156741A1 (fr) | 2016-10-06 |
Family
ID=53040656
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/FR2016/050719 WO2016156741A1 (fr) | 2015-03-31 | 2016-03-31 | Module de soufflante de turbomachine comprenant un système de dégivrage d'un cône d'entrée de turbomachine et procédé de dégivrage |
Country Status (4)
Country | Link |
---|---|
US (1) | US10760486B2 (fr) |
FR (1) | FR3034401B1 (fr) |
GB (1) | GB2553058B (fr) |
WO (1) | WO2016156741A1 (fr) |
Families Citing this family (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
BE1023233B1 (fr) * | 2015-07-01 | 2017-01-05 | Safran Aero Boosters S.A. | Tambour perfore de compresseur de turbomachine axiale |
US20190360399A1 (en) * | 2018-05-25 | 2019-11-28 | Rolls-Royce Corporation | System and method to promote early and differential ice shedding |
US11078843B2 (en) * | 2018-05-31 | 2021-08-03 | Raytheon Technologies Corporation | Thermal management of a gas turbine engine shaft |
CN110318882B (zh) * | 2019-07-10 | 2021-09-07 | 西北工业大学 | 一种带有五角星形冲击孔的帽罩前缘内部通道防冰结构 |
US11085328B2 (en) | 2019-09-09 | 2021-08-10 | Rohr, Inc. | Assembly for sealing an annular gap between an inner structure and an outer structure |
DE102021116507A1 (de) | 2021-06-25 | 2022-12-29 | Rolls-Royce Deutschland Ltd & Co Kg | Gasturbinentriebwerk |
US20230212956A1 (en) * | 2022-01-03 | 2023-07-06 | Honeywell International Inc. | System and method to increase the temperature of oil used to anti-ice a gas turbine propulsion engine |
Citations (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2712727A (en) * | 1950-05-17 | 1955-07-12 | Rolls Royce | Gas turbine power plants with means for preventing or removing ice formation |
US3925979A (en) * | 1973-10-29 | 1975-12-16 | Gen Electric | Anti-icing system for a gas turbine engine |
US4546604A (en) * | 1979-04-17 | 1985-10-15 | Rolls-Royce Limited | Nose bullet anti-icing for gas turbine engines |
US4941317A (en) * | 1988-04-14 | 1990-07-17 | Rolls-Royce Plc | Nose bullet anti-icing for gas turbine engines |
EP1662095A2 (fr) | 2004-11-25 | 2006-05-31 | Snecma | Lubrification des paliers d'un turboréacteur avec générateur de courant électrique intégré |
US20070220899A1 (en) * | 2006-03-22 | 2007-09-27 | Snecma | System for deicing an aircraft turbine engine inlet cone |
US20080279688A1 (en) * | 2007-05-11 | 2008-11-13 | Jensen Joseph M | Heated engine nose cone using spiral channels |
Family Cites Families (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2933886A (en) * | 1953-04-15 | 1960-04-26 | Sharma Devendra Nath | Turbojet engine convertible to ramjet engine |
-
2015
- 2015-03-31 FR FR1552705A patent/FR3034401B1/fr active Active
-
2016
- 2016-03-31 WO PCT/FR2016/050719 patent/WO2016156741A1/fr active Application Filing
- 2016-03-31 US US15/561,116 patent/US10760486B2/en active Active
- 2016-03-31 GB GB1715603.5A patent/GB2553058B/en active Active
Patent Citations (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2712727A (en) * | 1950-05-17 | 1955-07-12 | Rolls Royce | Gas turbine power plants with means for preventing or removing ice formation |
US3925979A (en) * | 1973-10-29 | 1975-12-16 | Gen Electric | Anti-icing system for a gas turbine engine |
US4546604A (en) * | 1979-04-17 | 1985-10-15 | Rolls-Royce Limited | Nose bullet anti-icing for gas turbine engines |
US4941317A (en) * | 1988-04-14 | 1990-07-17 | Rolls-Royce Plc | Nose bullet anti-icing for gas turbine engines |
EP1662095A2 (fr) | 2004-11-25 | 2006-05-31 | Snecma | Lubrification des paliers d'un turboréacteur avec générateur de courant électrique intégré |
US20070220899A1 (en) * | 2006-03-22 | 2007-09-27 | Snecma | System for deicing an aircraft turbine engine inlet cone |
EP1840028A1 (fr) | 2006-03-22 | 2007-10-03 | Snecma | Système de dégivrage d'un cone d'entrée de turbomoteur pour aéronef |
US20080279688A1 (en) * | 2007-05-11 | 2008-11-13 | Jensen Joseph M | Heated engine nose cone using spiral channels |
Also Published As
Publication number | Publication date |
---|---|
US10760486B2 (en) | 2020-09-01 |
GB201715603D0 (en) | 2017-11-08 |
FR3034401B1 (fr) | 2018-07-27 |
US20180128173A1 (en) | 2018-05-10 |
FR3034401A1 (fr) | 2016-10-07 |
GB2553058A (en) | 2018-02-21 |
GB2553058B (en) | 2021-06-30 |
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