EP1564372A1 - Dispositif de correction de balourd pour les disques rotoriques d'une turbomachine - Google Patents
Dispositif de correction de balourd pour les disques rotoriques d'une turbomachine Download PDFInfo
- Publication number
- EP1564372A1 EP1564372A1 EP05100778A EP05100778A EP1564372A1 EP 1564372 A1 EP1564372 A1 EP 1564372A1 EP 05100778 A EP05100778 A EP 05100778A EP 05100778 A EP05100778 A EP 05100778A EP 1564372 A1 EP1564372 A1 EP 1564372A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- rim
- balancing device
- balancing
- housings
- cavities
- 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.)
- Granted
Links
- 238000007789 sealing Methods 0.000 claims description 4
- 230000037431 insertion Effects 0.000 claims 1
- 238000003780 insertion Methods 0.000 claims 1
- 239000000543 intermediate Substances 0.000 description 4
- 238000000034 method Methods 0.000 description 4
- 230000008901 benefit Effects 0.000 description 3
- 238000006073 displacement reaction Methods 0.000 description 2
- 230000002093 peripheral effect Effects 0.000 description 2
- 210000002105 tongue Anatomy 0.000 description 2
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 238000012937 correction Methods 0.000 description 1
- 238000000151 deposition Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000018109 developmental process Effects 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 230000000717 retained effect Effects 0.000 description 1
Images
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
- F01D5/00—Blades; Blade-carrying members; Heating, heat-insulating, cooling or antivibration means on the blades or the members
- F01D5/02—Blade-carrying members, e.g. rotors
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01D—NON-POSITIVE DISPLACEMENT MACHINES OR ENGINES, e.g. STEAM TURBINES
- F01D5/00—Blades; Blade-carrying members; Heating, heat-insulating, cooling or antivibration means on the blades or the members
- F01D5/02—Blade-carrying members, e.g. rotors
- F01D5/027—Arrangements for balancing
-
- 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
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10S416/00—Fluid reaction surfaces, i.e. impellers
- Y10S416/50—Vibration damping features
Definitions
- the present invention relates to the field technical turbomachine rotors.
- It aims more particularly at a device balancing a rotor disk. It also aims a rotor disc equipped with such a device and a rotor having such a disk.
- US Pat. No. 3,888,601 describes a turbomachine equipped with a balancing device. He discloses a rotor disc provided at its periphery with blades. Each blade has a blade, a foot and a blade platform placed between the blade and the foot. On his around, the disc has grooves arranged according to an axial direction, intended to receive each the foot of a dawn. When a dawn is installed on the disc, his platform overflows laterally from each side of the disc. Hooks formed from one piece with the disc are circumferentially arranged on one side of the disc, being spaced from each other. They have two opposite side walls and oriented radially in coplanar alignment with the side walls of the blade mounting grooves.
- the balancing of the disk or the rotor is carried out at means of balancing masses comprising a body main and two tabs opposite each other intended to be inserted between the two arms a hook.
- the blades are introduced in their respective grooves of the disc.
- each balancing mass so as to insert its tongues in a hook of the disc, making it slide against the disc in one direction radially outward, until it arrives in abutment against a platform of dawn.
- the balancing masses thus installed are then immobilized: their axial displacement is prevented by their tongues held in a hook, their radial outward movement is prevented by the platform that forms abutment, and their radial displacement inward is prevented by an elastic ring of hold that is placed against the corresponding face of the disk.
- the balancing device that has just been describes a disadvantage in that it is not suitable for a rotor disk of the blisk type piece. It has another disadvantage in that this arrangement of disk balancing weights considerably increases the axial dimension of the disk. Indeed, to the axial dimension of the disc the thickness of the hooks, the size of the masses and that of the overhanging platforms. By next, in the presence of a set of several disks, the size of the turbomachine following a direction axial can become excessive.
- US Patents 4,848,182 and US 4,926,710 describe a method and system for balancing multidisk rotor with integral blade.
- a ring balancing is fixed by shrinking onto a disc, such that its peripheral surface is in contact with a contact face of the disc that is located on one side of the disc and radially oriented towards the inside of it.
- the ring is in abutment laterally to the inside of the disc against a lip of the disc that rises radially towards outside from the contact face. It is retained laterally towards the outside of the disc by means of an elastic retaining ring.
- the ring On its periphery external, the ring has teeth extending radially outwards which are separated by openings.
- the openings form, with the contact face and lip of the disc, cavities distributed circumferentially that open laterally to the outside of the disc.
- Many discs each equipped with their balancing ring are assembled together to form the rotor.
- the method of balancing the disk or the rotor consists of insert balance weights in some of the cavities that are distributed circumferentially. The balancing weights are held laterally towards the outside of the disc by the retaining ring elastic, to prevent them from coming out of their cavity.
- the balancing device that has just been described has a disadvantage in that the masses balancing devices are installed on a ring balancing. This requires the presence of a ring as well as a frettage fastening operation of this balancing ring on the disc.
- An object of the present invention is to propose a device for balancing a disk and / or a rotor by means of balancing weights, which not present the disadvantages of the technique previous statement above.
- the invention a balancing device that applies from preferred to a bladed rotor disc monobloc, the disc having a rim. It has housings in said rim and flyweights balancing housed in said housing.
- these dwellings are located in a side face of the rim, under a platform of disk that supports the blades, and are distributed on the circumference of the rim.
- the dwellings do not cross the rim, and present themselves in the form of blind holes whose orifice opens on a side face of the rim.
- these dwellings cross the rim and their orifices open on a first and a second opposite side faces of the rim.
- the houses and the weights have a Shape adapted to prevent rotation or tilting of each weight in its housing respective.
- the balancing device further comprises one or two ring (s) of stop (s), intended (s) to be positioned laterally against the rim, so that at least partially close the orifices corresponding housing.
- the snap ring closes at least half of the orifices.
- the snap ring closes completely the orifices. To prevent a rotation axis of the snap ring, it comprises at least one protuberance intended to fit into one of housing.
- the balancing device has one or two circumferential slot (s) arranged under the platform intended to receive a peripheral edge of a snap ring.
- the invention a monobloc rotor rotor, which is equipped with a balancing device according to the first aspect of the invention.
- the invention a rotor, which comprises at least one disc according to the second aspect of the invention.
- An advantage of the balancing device according to the invention lies in the fact that the dwellings of the flyweights are an integral part of the rim, which avoids having to use an extra room intended to receive balancing weights. he resulting in a reduction in manufacturing costs and mounting time of the rotors.
- Another advantage of the balancing system of the invention lies in the fact that the flyweights placed are easily accessible, and that it is possible to change the balance of the disks or rotor by changing the distribution of the weights balancing, without having to disassemble the rotor while whole.
- Another advantage lies in the fact that it is possible, with such a balancing device, to improve the correction of the unbalance of rotors.
- a rotor 10 comprising six discs 12, 14.
- three of the disks (right in the figure) are disks 12 each having removable vanes 16 attaching to the rim 18 of the disc.
- the other three disks (left in the figure) are monoblock bladed disks 14, each having blades 20 made in one piece with the rim 18 of the disc.
- FIG. 2 shows a disk one-piece bladder 14 having a rim 18 and vanes 20 made in one piece with the rim 18.
- a connecting flange 24 intended to assemble the disk 14 with a disk adjacent (not shown), which is attached to the disk 14 by fastening means such as for example screws through a hole 26 of the rim and a bore 28 of the connecting flange 24.
- the rim 18 is an area of larger thickness of which a face oriented radially towards the outside serves as a platform 32 from which the blades 20 extend radially outwards.
- housing 36 which are distributed circumferentially on the rim 18. According to a first embodiment of the device balancing of the invention, these dwellings 36 are present in the form of blind holes opening on a single side face 180 of the rim 18.
- balancing weights 40 are placed in the 36. According to the needs arising during of the balancing process, we place a weight 40 in some dwellings 36 and no weights 40 in other dwellings 36.
- the slots 36 present in the axial plane and / or in the plane transversal, a substantially rectangular section to rounded corners.
- the weights 40 present substantially a rectangular parallelepiped shape whose dimensions correspond to those of the dwelling 36, so that each weight 40 fits in his dwelling 36 without being able to move in rotation in this one.
- the edges of the parallelepiped rectangle are cut to form additional facets on the flyweight 40, in order to further limit possible movements of rotation or tilting of the weight 40 in its housing 36.
- the area of the rim 18 located between platform 32 and dwellings 36 is slightly overhanging the dwellings 36.
- the rim 18 has a circumferential slot 42, which is arranged in a face substantially opposite to the platform 32, and which runs along the dwellings 36.
- a snap ring 44 which has such a width that it closes at least partially housing 36 so as to hold the weights 40.
- the snap ring 44 is cut transversely, so that it can be installed and removed easily.
- the snap ring 44 has a anti-rotation member 46 to prevent its rotation in the transverse plane when installed in the slot 42 of the rim 18.
- This anti-rotation member is materialized, for example, by a protuberance 46 of the snap ring 44 which fits into one of the dwellings 36 which is not occupied by a flyweight 40 (FIG. 3).
- Figure 5 illustrates in front view and partial and enlarged housing 36.
- the snap ring 44 closes substantially half of the dwellings 36.
- the snap ring 44 closes two-thirds 36 or all 36 dwellings. to prevent the weights 40 from coming out of housings 36, it is preferred that the snap ring covers at least half of the dwellings 36.
- the housing 38 is in the form through holes that open on both sides of the rim 18.
- these dwellings 38 present a first cavity 382 similar to housings 36 of the first embodiment and which opens on a first side face 182 of the rim 18. They also present a second cavity 384 substantially symmetrical to the first cavity 382 by compared to a median plane of the rim 18, and which opens on a second side face 184 of the rim 18, opposite its first side face 182.
- the two cavities 382, 384 are interconnected by a intermediate channel 386, which presents, on the example illustrated, a smaller section than the sections respective two cavities 382, 384.
- weights balancing 40 are placed in some of the first cavities 382, and a first snap ring 442 is installed in a first slot 422 formed in a first part overhanging in relation to the first face 182 of the rim 18, so as to close at least partially the first cavities 382 and hold the weights 40.
- sealing flanges 48 are provided to ensure the sealing of the disc 14. They are preferably placed at the bottom of the second cavities 384, and cut all communication between the second cavities and the intermediate channels 386 of lesser section.
- a second stop ring 444 is installed in a second slot 424 arranged in a second part overlooking compared to the second face 184 of the rim 18, of at least partially closing the seconds cavities 384 and to retain the sealing flanges 48.
- the first snap ring 442, respectively the second snap ring 444, is preferably cut transversely, so that it can be installed and removed easily.
- the first stop ring 442 respectively the second snap ring 444, presents a anti-rotation member (not shown), similar to that stop ring 44 according to the first embodiment of the device.
- Balancing also applies to the second mode of realization of the balancing device.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Turbine Rotor Nozzle Sealing (AREA)
Abstract
Description
- la figure 1 est une représentation partielle, selon une coupe axiale, d'un rotor qui comporte des disques aubagés monoblocs et des disques ayant des aubes amovibles ;
- la figure 2 est une représentation partielle, selon une coupe axiale, d'un disque muni d'un premier mode de réalisation du dispositif d'équilibrage selon l'invention ;
- la figure 3 est analogue à la figure 2, selon une autre coupe axiale ;
- la figure 4 est une représentation partielle, en perspective, d'un disque équipé du dispositif d'équilibrage selon l'invention ;
- la figure 5 est une représentation partielle, en vue de face, du premier mode de réalisation du dispositif d'équilibrage selon l'invention ;
- la figure 6 est analogue à la figure 3, pour un deuxième mode de réalisation du dispositif d'équilibrage selon l'invention.
Claims (20)
- Dispositif d'équilibrage d'un disque (14) de rotor (10) de type disque aubagé monobloc, le disque (14) ayant une jante (18), caractérisé en ce qu'il comporte des logements (36, 38) ménagés dans ladite jante (18) et des masselottes d'équilibrage (40, 30) placées dans lesdits logements (36, 38).
- Dispositif d'équilibrage selon la revendication 1, caractérisé en ce que les logements (36, 38) sont situés sous une plate-forme (32) qui supporte les aubes (20).
- Dispositif d'équilibrage selon la revendication 1 ou 2, caractérisé en ce que les logements (36, 38) sont répartis sur la circonférence de la jante (18).
- Dispositif d'équilibrage selon l'une quelconque des revendications 1 à 3, caractérisé en ce que les logements (36) ne traversent pas la jante (18) et en ce que leurs orifices débouchent sur une même face latérale (180) de la jante (18).
- Dispositif d'équilibrage selon l'une quelconque des revendications 1 à 4, caractérisé en ce qu'il comporte en outre un jonc d'arrêt (44), destiné à être positionné latéralement contre la jante (18), de manière à obturer au moins partiellement les orifices des logements (36).
- Dispositif d'équilibrage selon la revendication 5, caractérisé en ce qu'il comporte en outre une fente circonférentielle (42) destinée à recevoir le jonc d'arrêt (44).
- Dispositif d'équilibrage selon la revendication 5 ou 6, caractérisé en ce que le jonc d'arrêt (44) comprend une protubérance (46) destinée à s'insérer dans un des logements (36), afin d'empêcher une rotation axiale du jonc d'arrêt (44).
- Dispositif d'équilibrage selon l'une quelconque des revendications 1 à 3, caractérisé en ce que les logements (38) traversent la jante (18) entre une première face latérale (182) et une seconde face latérale (184) de celle-ci opposée à sa première face.
- Dispositif d'équilibrage selon la revendication 8, caractérisé en ce que les logements (38) comportent une première cavité (382) dont l'orifice débouche sur la première face latérale (182) de la jante (18), une seconde cavité (384) dont l'orifice débouche sur la seconde face (184) de la jante (18), et un canal intermédiaire (386) qui relie les deux cavités (382, 384).
- Dispositif d'équilibrage selon la revendication 9, caractérisé en ce que des masselottes d'équilibrage (40) sont placées dans les premières cavités (382).
- Dispositif d'équilibrage selon la revendication 10, caractérisé en ce que des masselottes additionnelles (30) sont placées dans les canaux intermédiaires (386).
- Dispositif d'équilibrage selon l'une quelconque des revendications 9 à 11, caractérisé en ce qu'il comporte en outre des flasques d'étanchéité (48) placés dans les secondes cavités (384).
- Dispositif d'équilibrage selon l'une quelconque des revendications 9 à 12, caractérisé en ce qu'il comporte en outre un premier jonc d'arrêt (442), destiné à être positionné latéralement contre la jante (18), de manière à obturer au moins partiellement les orifices des premières cavités (382) et un second jonc d'arrêt (444) destiné à être positionné latéralement contre la jante (18), de manière à obturer les orifices des secondes cavités (384).
- Dispositif d'équilibrage selon la revendication 13, caractérisé en ce que le premier jonc d'arrêt (442), respectivement le second jonc d'arrêt (444), comprend une protubérance destinée à s'insérer dans une des premières cavités (382), respectivement dans une des secondes cavités (384), afin d'empêcher une rotation axiale de celui-ci.
- Dispositif d'équilibrage selon la revendication 13 ou 14, caractérisé en ce qu'il comporte en outre une première fente circonférentielle (422) destinée à recevoir le premier jonc d'arrêt (442), et une seconde fente circonférentielle (424) destinée à recevoir le second jonc d'arrêt (444).
- Dispositif d'équilibrage selon l'une quelconque des revendications 5 à 7, ou 13 à 15, caractérisé en ce que chaque jonc d'arrêt (44, 442, 444) obture au moins la moitié des orifices correspondants.
- Dispositif d'équilibrage selon la revendication 16, caractérisé en ce que chaque jonc d'arrêt (44, 442, 444) obture complètement les orifices correspondants.
- Dispositif d'équilibrage selon l'une quelconque des revendications 1 à 17, caractérisé en ce que les logements (36, 38) et les masselottes d'équilibrage (40, 30) présentent une forme adaptée pour empêcher une rotation ou un basculement des masselottes d'équilibrage (40, 30) dans leurs logements respectifs (36, 38).
- Disque aubagé monobloc (14) de rotor, caractérisé en ce qu'il est équipé d'un dispositif d'équilibrage selon l'une quelconque des revendications 1 à 18.
- Rotor (10), caractérisé en ce qu'il comprend au moins un disque selon la revendication 19.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR0450217 | 2004-02-06 | ||
FR0450217A FR2866057B1 (fr) | 2004-02-06 | 2004-02-06 | Dispositif d'equilibrage d'un disque de rotor, disque equipe d'un tel dispositif, et rotor ayant un tel disque |
Publications (2)
Publication Number | Publication Date |
---|---|
EP1564372A1 true EP1564372A1 (fr) | 2005-08-17 |
EP1564372B1 EP1564372B1 (fr) | 2013-07-10 |
Family
ID=34685068
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP05100778.9A Active EP1564372B1 (fr) | 2004-02-06 | 2005-02-04 | Disque de rotor comportant un dispositif d'équilibrage |
Country Status (6)
Country | Link |
---|---|
US (1) | US7347672B2 (fr) |
EP (1) | EP1564372B1 (fr) |
JP (1) | JP4856879B2 (fr) |
CA (1) | CA2495848C (fr) |
FR (1) | FR2866057B1 (fr) |
RU (1) | RU2362028C2 (fr) |
Cited By (4)
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RU2499889C1 (ru) * | 2012-03-13 | 2013-11-27 | Открытое акционерное общество Конструкторско-производственное предприятие "Авиамотор" | Способ снижения динамических напряжений в рабочих лопатках последней ступени турбины |
EP3006667A1 (fr) * | 2014-10-09 | 2016-04-13 | Siemens Aktiengesellschaft | Aube directrice de turbine, système composé d'un arbre de turbine, d'un disque de roue de turbine, d'une multitude d'aubes directrices de turbines, ainsi que d'un équilibrage et d'une turbine |
FR3028781A1 (fr) * | 2014-11-25 | 2016-05-27 | Snecma | Piece pour rotor de turbomachine d'aeronef comprenant une protuberance annulaire usinable pourvue d'un orifice de deshuilage et procede de preparation de celle-ci |
FR3102205A1 (fr) | 2019-10-17 | 2021-04-23 | Safran Aircraft Engines | Rotor de turbomachine à masselotte |
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FR2896289B1 (fr) * | 2006-01-13 | 2008-03-28 | Snecma Sa | Masselotte d'equilibrage, disque de rotor en etant equipe, rotor et moteur d'aeronef les comportant |
FR2907498B1 (fr) * | 2006-10-24 | 2009-01-23 | Snecma Sa | Systeme d'equilibrage pour rotor de turbomachine |
FR2907497B1 (fr) * | 2006-10-24 | 2009-01-23 | Snecma Sa | Systeme d'equilibrage pour rotor de turbomachine |
FR2922587B1 (fr) * | 2007-10-22 | 2010-02-26 | Snecma | Roue de turbomachine |
US8328519B2 (en) * | 2008-09-24 | 2012-12-11 | Pratt & Whitney Canada Corp. | Rotor with improved balancing features |
US9297258B2 (en) * | 2009-06-16 | 2016-03-29 | General Electric Company | Trapped spring balance weight and rotor assembly |
US8506253B2 (en) * | 2009-08-19 | 2013-08-13 | Pratt & Whitney Canada Corp. | Balancing apparatus for rotor assembly |
US8246305B2 (en) * | 2009-10-01 | 2012-08-21 | Pratt & Whitney Canada Corp. | Gas turbine engine balancing |
US9022727B2 (en) * | 2010-11-15 | 2015-05-05 | Mtu Aero Engines Gmbh | Rotor for a turbo machine |
CA2761208C (fr) | 2010-12-08 | 2019-03-05 | Pratt & Whitney Canada Corp. | Lame circulaire pour dispositif de reglage de la frequence d'oscillation des pales |
US20120219419A1 (en) * | 2011-02-28 | 2012-08-30 | Wen-Hao Liu | Round axial fan with balancing structure |
US20130156584A1 (en) * | 2011-12-16 | 2013-06-20 | Carney R. Anderson | Compressor rotor with internal stiffening ring of distinct material |
US8984940B2 (en) | 2012-04-04 | 2015-03-24 | Elliot Company | Passive dynamic inertial rotor balance system for turbomachinery |
US9388697B2 (en) * | 2012-07-17 | 2016-07-12 | Solar Turbines Incorporated | First stage compressor disk configured for balancing the compressor rotor assembly |
TWI601884B (zh) * | 2016-02-22 | 2017-10-11 | 佛山市建準電子有限公司 | 可調整配重之扇輪及風扇 |
US10883370B2 (en) * | 2018-08-14 | 2021-01-05 | Raytheon Technologies Corporation | Dovetail weight system for rotor balance |
FR3091721B1 (fr) * | 2019-01-10 | 2021-01-15 | Safran Aircraft Engines | Rotor de turbomachine a masselotte |
US11352903B2 (en) * | 2020-01-20 | 2022-06-07 | Raytheon Technologies Corporation | Rotor stack bushing with adaptive temperature metering for a gas turbine engine |
US11976564B1 (en) | 2023-03-30 | 2024-05-07 | Rolls-Royce North American Technologies Inc. | Splined balance weight for rotating components in gas turbine engines |
US12018580B1 (en) | 2023-08-08 | 2024-06-25 | Rolls-Royce North American Technologies Inc. | Rotor assembly for gas turbine engines with replaceable balance weight pins |
US12018579B1 (en) | 2023-08-08 | 2024-06-25 | Rolls-Royce North American Technologies Inc. | Clocking balance weight rotor assembly for gas turbine engines |
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US7063507B2 (en) * | 2004-05-05 | 2006-06-20 | Hsieh Hsin-Mao | Balance adjusted fan |
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2004
- 2004-02-06 FR FR0450217A patent/FR2866057B1/fr not_active Expired - Lifetime
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2005
- 2005-01-31 JP JP2005023374A patent/JP4856879B2/ja active Active
- 2005-02-01 US US11/046,680 patent/US7347672B2/en active Active
- 2005-02-02 CA CA2495848A patent/CA2495848C/fr active Active
- 2005-02-04 RU RU2005102783/06A patent/RU2362028C2/ru active
- 2005-02-04 EP EP05100778.9A patent/EP1564372B1/fr active Active
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GB805371A (en) * | 1956-01-16 | 1958-12-03 | Rolls Royce | Improvements in or relating to balancing means for rotors |
US3748060A (en) * | 1971-09-14 | 1973-07-24 | Westinghouse Electric Corp | Sideplate for turbine blade |
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Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
RU2499889C1 (ru) * | 2012-03-13 | 2013-11-27 | Открытое акционерное общество Конструкторско-производственное предприятие "Авиамотор" | Способ снижения динамических напряжений в рабочих лопатках последней ступени турбины |
EP3006667A1 (fr) * | 2014-10-09 | 2016-04-13 | Siemens Aktiengesellschaft | Aube directrice de turbine, système composé d'un arbre de turbine, d'un disque de roue de turbine, d'une multitude d'aubes directrices de turbines, ainsi que d'un équilibrage et d'une turbine |
FR3028781A1 (fr) * | 2014-11-25 | 2016-05-27 | Snecma | Piece pour rotor de turbomachine d'aeronef comprenant une protuberance annulaire usinable pourvue d'un orifice de deshuilage et procede de preparation de celle-ci |
FR3102205A1 (fr) | 2019-10-17 | 2021-04-23 | Safran Aircraft Engines | Rotor de turbomachine à masselotte |
Also Published As
Publication number | Publication date |
---|---|
CA2495848C (fr) | 2013-01-22 |
RU2005102783A (ru) | 2006-07-10 |
FR2866057A1 (fr) | 2005-08-12 |
US7347672B2 (en) | 2008-03-25 |
US20050191181A1 (en) | 2005-09-01 |
FR2866057B1 (fr) | 2006-04-28 |
JP2005220908A (ja) | 2005-08-18 |
JP4856879B2 (ja) | 2012-01-18 |
RU2362028C2 (ru) | 2009-07-20 |
CA2495848A1 (fr) | 2005-08-06 |
EP1564372B1 (fr) | 2013-07-10 |
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