WO2012069773A1 - Dispositif de desaccouplement d'un support de palier - Google Patents
Dispositif de desaccouplement d'un support de palier Download PDFInfo
- Publication number
- WO2012069773A1 WO2012069773A1 PCT/FR2011/052772 FR2011052772W WO2012069773A1 WO 2012069773 A1 WO2012069773 A1 WO 2012069773A1 FR 2011052772 W FR2011052772 W FR 2011052772W WO 2012069773 A1 WO2012069773 A1 WO 2012069773A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- upstream
- bearing support
- screw
- downstream
- fuse
- 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.)
- Ceased
Links
Classifications
-
- 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
- F04D29/05—Shafts or bearings, or assemblies thereof, specially adapted for elastic fluid pumps
- F04D29/056—Bearings
- F04D29/0563—Bearings cartridges
-
- 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
- F01D21/00—Shutting-down of machines or engines, e.g. in emergency; Regulating, controlling, or safety means not otherwise provided for
- F01D21/04—Shutting-down of machines or engines, e.g. in emergency; Regulating, controlling, or safety means not otherwise provided for responsive to undesired position of rotor relative to stator or to breaking-off of a part of the rotor, e.g. indicating such position
-
- 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
- F01D21/00—Shutting-down of machines or engines, e.g. in emergency; Regulating, controlling, or safety means not otherwise provided for
- F01D21/04—Shutting-down of machines or engines, e.g. in emergency; Regulating, controlling, or safety means not otherwise provided for responsive to undesired position of rotor relative to stator or to breaking-off of a part of the rotor, e.g. indicating such position
- F01D21/045—Shutting-down of machines or engines, e.g. in emergency; Regulating, controlling, or safety means not otherwise provided for responsive to undesired position of rotor relative to stator or to breaking-off of a part of the rotor, e.g. indicating such position special arrangements in stators or in rotors dealing with breaking-off of part of rotor
-
- 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
-
- 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
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02C—GAS-TURBINE PLANTS; AIR INTAKES FOR JET-PROPULSION PLANTS; CONTROLLING FUEL SUPPLY IN AIR-BREATHING JET-PROPULSION PLANTS
- F02C7/00—Features, components parts, details or accessories, not provided for in, or of interest apart form groups F02C1/00 - F02C6/00; Air intakes for jet-propulsion plants
- F02C7/06—Arrangements of bearings; Lubricating
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16B—DEVICES FOR FASTENING OR SECURING CONSTRUCTIONAL ELEMENTS OR MACHINE PARTS TOGETHER, e.g. NAILS, BOLTS, CIRCLIPS, CLAMPS, CLIPS OR WEDGES; JOINTS OR JOINTING
- F16B31/00—Screwed connections specially modified in view of tensile load; Break-bolts
- F16B31/02—Screwed connections specially modified in view of tensile load; Break-bolts for indicating the attainment of a particular tensile load or limiting tensile load
- F16B31/028—Screwed connections specially modified in view of tensile load; Break-bolts for indicating the attainment of a particular tensile load or limiting tensile load with a load-indicating washer or washer assembly
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
- F16D9/00—Couplings with safety member for disconnecting, e.g. breaking or melting member
- F16D9/04—Couplings with safety member for disconnecting, e.g. breaking or melting member by tensile breaking
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
- F16D9/00—Couplings with safety member for disconnecting, e.g. breaking or melting member
- F16D9/06—Couplings with safety member for disconnecting, e.g. breaking or melting member by breaking due to shear stress
-
- 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
- F05B2260/00—Function
- F05B2260/30—Retaining components in desired mutual position
- F05B2260/301—Retaining bolts or nuts
- F05B2260/3011—Retaining bolts or nuts of the frangible or shear type
-
- 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
- F05D2230/00—Manufacture
- F05D2230/60—Assembly methods
- F05D2230/64—Assembly methods using positioning or alignment devices for aligning or centring, e.g. pins
Definitions
- the present invention relates to a device for uncoupling a shaft bearing support rotating in a turbomachine. Such a support is likely to break its connection with the stator of the turbomachine at the appearance of an unbalance to prevent damage to the turbomachine.
- a turbomachine comprises, from upstream to downstream with respect to the direction of the gas flow, a compressor, a combustion chamber and a turbine.
- the function of the compressor is to increase the pressure of the air supplied to the combustion chamber.
- the function of the turbine is to take a portion of the pressure energy of the hot gases leaving the combustion chamber and convert it into mechanical energy, to ensure the rotational drive of the compressor.
- the compressor and the turbine consist of a first set of fixed parts constituting the stator and a second set of parts, which can be rotated relative to the stator, constituting the rotor.
- the rotor of the compressor and the rotor of the turbine form an assembly connected by a rotating shaft.
- Rotation of the rotor relative to the stator is made possible by means of bearings, a bearing being a mechanical member supporting and guiding a rotor, in particular the shaft of this rotor.
- This bearing comprises a first part fixed on the rotor shaft and a second part fixed on the stator by means of a bearing support.
- a bearing is disposed between the two parts of the bearing thus allowing the rotation of one part of the bearing relative to the other.
- the bearing may for example be of ball type, cylindrical roller or tapered roller.
- a turbomachine may also be of the "double-body” type, which means that it comprises two rotors arranged coaxially, a bearing allowing relative rotation between these two rotors.
- a turbomachine may also include a blower, constituting the first stage of the compressor.
- the fan comprises blades of very large size, called fan blades, which have the effect of increasing the mass and the inertia of the rotor.
- Document FR 2877046 describes a solution consisting in using fusible bolted connections for fixing an upstream part and a downstream part forming a bearing support.
- the fusible screw of each bolted connection passes through an upstream orifice of an upstream portion and a downstream orifice of a downstream portion of a bearing support, the downstream portion of the bearing support forming an integral part of the housing.
- the screw head of the fuse screw is adjacent to the orifice of the upstream part and is in contact with this upstream part in a plane perpendicular to the axis of the orifice.
- the portion of the fusible screw passing through the orifice is in contact with the inside of the orifice by a centering portion and has a portion of reduced section capable of breaking beyond a predetermined tensile force and thus of uncoupling the two parts constituting the bearing support.
- the longitudinal positioning of the low pressure compressor shaft can be achieved by means of a thrust bearing, in the form of for example a ball bearing. between the drive shaft and the upstream portion of the bearing support.
- This means can be constituted in practice by the cooperation of a groove and a rib of complementary shapes, in contact with each other by their two sides, thus providing two parallel contact surfaces.
- Such centering, by means of these two parallel surfaces, makes it possible to reduce or even eliminate the deformation by ovalization of the bearing support by maintaining a permanent contact between the flanks of the groove and the rib.
- the document EP 2071 138 also proposes to eliminate any contact between each upstream orifice and the fusible screw therethrough, which makes it possible to subject the said fusible screws only to traction forces, guaranteeing thus better control of the uncoupling of the bearing support.
- the low pressure compressor shaft is always maintained longitudinally by the thrust bearing of the downstream part of the bearing support.
- the upstream bearing secured to the shaft being moreover roller, no forward movement causes the upstream portion of the bearing support. It follows a risk that the upstream and downstream parts of the bearing support do not disengage, which would have the consequence that the unbalance generated by the loss of blades would be fully transmitted to the structures.
- the object of the invention is to remedy these drawbacks and proposes for this purpose a device for uncoupling a bearing support in a turbomachine, this uncoupling device being with fusible screws and allowing, during a loss of blades, not only to attenuate shear forces on the fusible screws, or even to remove them, but also to ensure the uncoupling of the bearing support.
- the device for uncoupling a bearing support in a turbomachine having an upstream portion and a downstream portion comprising a plurality of upstream orifices respectively facing a plurality of downstream orifices
- this uncoupling device comprising fusible screws each passing through an upstream orifice and a downstream orifice, and at least one double centering means of a fuse screw with respect to said upstream orifice and said downstream orifice, respectively, is remarkable.
- the double centering means is remarkable. in that the double centering means:
- the double centering means is in the form of a tubular piece whose dimensions of the internal section are adapted to the dimensions of the upstream portion of the fuse screw.
- the fuse screw having an upstream head and a tail downstream
- the double centering means has a transverse shoulder relative to the head of said fuse screw.
- the screw head - and thereby the upstream part of the screw - is surrounded and thus blocked transversely by the double centering means.
- the double centering means has an intermediate portion intended to form a clearance between an upstream orifice and the fusible screw therethrough, so as to avoid any contact between said upstream orifice and said fuse screw.
- a displacement of the upstream portion of the bearing support does not also cause a fuse screw via tangential contact around the fuse screw, which makes the fuse screw all the less subject to Shear forces and offers better control of the decoupling of the bearing support.
- this double centering means serves as an intermediate between the bearing support and the fuse screw to ensure the centering function of the two orifices
- this double centering means may have a cylindrical portion able, on the one hand, to pass through a upstream port and a downstream port, and, secondly, to be traversed at least partially by the fuse screw.
- the double centering means has a longitudinal securing portion of said double centering means on the upstream part of the fuse screw.
- the double centering means is secured longitudinally, that is to say in the direction of the gas flow which also corresponds to the direction of the relative displacement of the two separate parts of the fuse screw (and to the direction of the axis of the upstream and downstream orifices of the bearing support), at the upstream portion of the fuse screw, so that the latter is driven with the upstream part of the fuse screw when said upstream part moves away.
- the longitudinal securing portion it is in the form of a flap at the upstream end of the double centering means.
- the fuse screw may have at least one thinned portion so as to form, on breaking of said fuse screw, on the one hand, an upstream part and, on the other hand, a downstream part. said fuse screw.
- the fuse screw having an upstream head and a tail downstream, the thinned portion is preferably located at the tail.
- the present invention also relates to a turbomachine comprising a device for uncoupling a bearing support according to one of the embodiments described above.
- FIG. 1 is a diagrammatic view in axial section of a bearing support equipped with a decoupling device according to a first embodiment of the invention
- FIG. 2 is a diagrammatic view in axial section of the uncoupling device of the bearing support of FIG. 1, before rupture of the fuse screw,
- FIG. 3 is a diagrammatic view in axial section of the uncoupling device of FIG. 2, after rupture of the fusible screw, and
- FIG. 4 is a schematic axial sectional view of a uncoupling device according to a second embodiment of the invention.
- FIG. 1 shows a turbomachine 1 comprising a drive shaft 4, for example a low-pressure compressor, which drives a rotor (not shown) in rotation about the axis of the turbomachine.
- This tree is here supported by two bearings respectively upstream 2 and downstream 3 connected to each other at a bearing support 7, of substantially frustoconical shape.
- the bearing 2 is a roller bearing and the bearing 3 is a thrust bearing, ball bearing type.
- the bearings 2 and 3 are respectively connected to a first part 5 and a second part 1 1.
- the two parts 5 and 1 1 are respectively connected to two ends of a part 6 of the fixed structure of the turbomachine.
- the fixing between the parts 6 and 1 1 is effected by means of non-fuse type bolts.
- the connection between the parts 5 and 6 forms the bearing support 7, at which is disposed a plurality of longitudinal fusible screws which together form a part of the uncoupling device according to the invention.
- One of these fuse screws has the reference 8 in Figure 1.
- the uncoupling device according to the invention is shown in more detail in Figure 2.
- the bearing support 7 is formed of two ends 5A and 6A - hereinafter respectively upstream and downstream parts of the bearing support - respectively of the two parts 5 and 6, themselves respectively connected to the two bearings 2 and 3.
- upstream orifices 5B and 6B of equal dimensions intended to be traversed by a fusible type bolted connection of the uncoupling device according to the invention.
- This bolted connection is formed of a fuse screw 8 (amply described in the document FR 2 877 046) which passes through the orifices 5B and 6B, as well as a nut 9 intended to cooperate with the screw 8 so as to firmly hold the against each other the upstream parts 5A and 6A of the bearing support 7.
- the fuse screw 8 comprises a screw head 8A disposed opposite the upstream portion 5A of the bearing support, the nut 9 being disposed opposite this head 8A, that is to say opposite the downstream part 6A of the bearing support.
- the screw 8 also comprises a screw shank 8B, a first portion of which is situated opposite the head 8A and is intended to pass through the nut 9, and a second portion 8C situated between the head 8A and the said first part. , has a thinned section.
- the uncoupling device according to the invention also comprises a means of double centering the fuse 8 with respect to the upstream orifice respectively. 5B and the downstream port 6B.
- This means 10 consists of a part which is independent, on the one hand, of the fuse screw 8 and, on the other hand, of the bearing support 7 (in particular upstream parts 5A and downstream 6A of the bearing support 7 ).
- This double centering means 10 is in the form of a tubular part of which:
- the internal section, variable, is adapted to the dimensions of the upstream portion of the fuse screw 8, in particular the screw head 8A and the tail 8B;
- this tubular piece 10 has first, upstream, a first tubular portion 10A whose inner section is adapted to the screw head 8A.
- the piece 10 also has a portion 10B forming a transverse shoulder of said screw head.
- the piece 10 also has, downstream, a second tubular portion 10C of smaller dimension than the portion 10A and whose inner and outer sections are configured so that the portion 10C, on the one hand, through the upstream orifices 5B and 6B and on the other hand, is at least partially traversed by the fuse screw 8, at least by the tail 8B.
- the part 10 ensures the double centering of the upstream parts 5A and downstream 6A of the bearing support 7 by the only insertion of said portion 10C inside the upstream orifices 5B and 6B previously put facing each other.
- an independent double centering means such as the tubular piece 10
- the double centering function between the pieces 5 and 6 is ensured without their structures being modified, which would have been likely to degrade their decoupling efficiency.
- this independent piece can be driven with the head of 8A screw when the screw 8 is broken, so that when breaking said fuse screw 8, the double centering function parts 5 and 6 is deactivated and said parts 5 and 6 are free to move one by relation to the other, both longitudinally and transversely.
- the double centering function is also not supported by the fusible screws, which would have the disadvantage of subjecting the fusible screws to shear forces in addition to the usual traction efforts.
- the double centering means 10 also has an intermediate portion 10B-located between the first portion 10A and the second portion 10C.
- This intermediate portion 10B has an outer section substantially equal to that of the portion 10A and an inner section substantially equal to that of the portion 10C.
- This portion 10B whose outer section is thus greater than the dimensions of the upstream orifices 5B and 6B, abuts against the upstream portion 5A of the bearing support 7 when the bolted connection 8-9 encloses the bearing support 7.
- this portion 10B determines a clearance between the upstream orifice 5B and the fuse screw 8 which passes therethrough (in particular the screw head 8A), this clearance making it possible to avoid any contact between said upstream orifice 5B and said screw head 8A.
- this longitudinal thickness is determined so that the game thus formed avoids the shear forces on the fuse screw 8 in the event of unbalance.
- the double centering means can be made in a plurality of attachments to each other, insofar as these parts are independent of the fuse screw and the bearing support 7 and where these parts are driven. by the upstream portion of the fuse screw 8 when the latter is broken. The rupture of the fuse screw 8 is illustrated in FIG. 3.
- the thinned portion 8C of the fuse screw 8 is broken under the effect of the traction forces generated by the unbalance, this portion 8C thus separating into two sub-portions respectively upstream 8C and downstream 8C ".Always under the effect of these tensile forces and because of the rupture of the fuse screw 8, the upstream portion of said fuse screw - here formed of the screw head 8A and the upstream sub-portion 8C - is moved away from the bearing support 7 in the direction of the arrow F, which occurs along the longitudinal axis XX 'of the fusible bolt connection 8-9.
- the latter is extended, at the end of the upstream portion 10A, by an additional portion 10D intended to join longitudinally (in the direction of the X-axis X) the fusible screw 8 to the double centering piece 10 when said screw 8 passes through said part 10 and the screw head 8A abuts against the intermediate portion 10B.
- This additional portion 10D is in the form of a flexible flap adapted to take two successive positions:
- a recess 8D may be made at the portion of the screw head 8A on which the flap 10D is intended to abut, so that the inclination of said flap 10D is between 0 ° and 90 ° with respect to the longitudinal axis X- X '.
- there may be no recess so that the flap 10D will have to be folded to form an angle of 90 ° with respect to the axis X-X '.
- those skilled in the art will be able to determine the desired inclination of the flaps, taking into account, if necessary, on the one hand, the desirable longitudinal securing force between the screw 8 and the piece 10 and, secondly, the ease of folding of the portion 10D.
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Structures Of Non-Positive Displacement Pumps (AREA)
Abstract
Description
Claims
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US13/824,642 US9551350B2 (en) | 2010-11-26 | 2011-11-25 | Device for uncoupling a bearing carrier |
| GB1309423.0A GB2498910B (en) | 2010-11-26 | 2011-11-25 | Device for uncoupling a bearing carrier |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR1059820A FR2968039B1 (fr) | 2010-11-26 | 2010-11-26 | Dispositif de desaccouplement d'un support de palier |
| FR1059820 | 2010-11-26 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| WO2012069773A1 true WO2012069773A1 (fr) | 2012-05-31 |
Family
ID=44147657
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| PCT/FR2011/052772 Ceased WO2012069773A1 (fr) | 2010-11-26 | 2011-11-25 | Dispositif de desaccouplement d'un support de palier |
Country Status (4)
| Country | Link |
|---|---|
| US (1) | US9551350B2 (fr) |
| FR (1) | FR2968039B1 (fr) |
| GB (1) | GB2498910B (fr) |
| WO (1) | WO2012069773A1 (fr) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2976623B1 (fr) * | 2011-06-20 | 2013-06-28 | Snecma | Dispositif de decouplage pour turbomoteur a double flux |
| FR3027073B1 (fr) * | 2014-10-10 | 2017-05-05 | Snecma | Assemblage de deux pieces comprenant une coupelle de centrage amovible pour turbomachine d'aeronef |
| CN113931753B (zh) * | 2021-11-12 | 2023-01-17 | 中国航发沈阳发动机研究所 | 一种双止口自适应定心转换器 |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2877046A1 (fr) * | 2004-10-26 | 2006-04-28 | Snecma Moteurs Sa | Turbomachine avec un dispositif de decouplage et vis fusible pour dispositif de decouplage de la turbomachine |
| EP2071138A1 (fr) * | 2007-12-14 | 2009-06-17 | Snecma | Dispositif de découplage d'un support de palier avec double centrage |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2605806A (en) * | 1948-07-26 | 1952-08-05 | Tinnerman Products Inc | Fastening device |
| US2971425A (en) * | 1956-12-31 | 1961-02-14 | Richard H Blakeley | Blind fastener having an expandable nut drawn into endwise abutment with work surface |
-
2010
- 2010-11-26 FR FR1059820A patent/FR2968039B1/fr active Active
-
2011
- 2011-11-25 WO PCT/FR2011/052772 patent/WO2012069773A1/fr not_active Ceased
- 2011-11-25 US US13/824,642 patent/US9551350B2/en active Active
- 2011-11-25 GB GB1309423.0A patent/GB2498910B/en active Active
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2877046A1 (fr) * | 2004-10-26 | 2006-04-28 | Snecma Moteurs Sa | Turbomachine avec un dispositif de decouplage et vis fusible pour dispositif de decouplage de la turbomachine |
| EP2071138A1 (fr) * | 2007-12-14 | 2009-06-17 | Snecma | Dispositif de découplage d'un support de palier avec double centrage |
Also Published As
| Publication number | Publication date |
|---|---|
| US20130236291A1 (en) | 2013-09-12 |
| US9551350B2 (en) | 2017-01-24 |
| GB201309423D0 (en) | 2013-07-10 |
| GB2498910A (en) | 2013-07-31 |
| FR2968039B1 (fr) | 2012-11-16 |
| GB2498910B (en) | 2017-03-29 |
| FR2968039A1 (fr) | 2012-06-01 |
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