WO2014044970A1 - Système de rétention d'aubes et procédé d'assemblage - Google Patents
Système de rétention d'aubes et procédé d'assemblage Download PDFInfo
- Publication number
- WO2014044970A1 WO2014044970A1 PCT/FR2013/052154 FR2013052154W WO2014044970A1 WO 2014044970 A1 WO2014044970 A1 WO 2014044970A1 FR 2013052154 W FR2013052154 W FR 2013052154W WO 2014044970 A1 WO2014044970 A1 WO 2014044970A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- pivot
- retention
- piece
- blower
- main body
- 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
- F04D19/00—Axial-flow pumps
- F04D19/02—Multi-stage pumps
- F04D19/024—Multi-stage pumps with contrarotating parts
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B64—AIRCRAFT; AVIATION; COSMONAUTICS
- B64C—AEROPLANES; HELICOPTERS
- B64C11/00—Propellers, e.g. of ducted type; Features common to propellers and rotors for rotorcraft
- B64C11/02—Hub construction
- B64C11/04—Blade mountings
- B64C11/06—Blade mountings for variable-pitch blades
-
- 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
- F01D5/00—Blades; Blade-carrying members; Heating, heat-insulating, cooling or antivibration means on the blades or the members
- F01D5/30—Fixing blades to rotors; Blade roots ; Blade spacers
- F01D5/32—Locking, e.g. by final locking blades or keys
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02K—JET-PROPULSION PLANTS
- F02K3/00—Plants including a gas turbine driving a compressor or a ducted fan
- F02K3/02—Plants including a gas turbine driving a compressor or a ducted fan in which part of the working fluid by-passes the turbine and combustion chamber
- F02K3/04—Plants including a gas turbine driving a compressor or a ducted fan in which part of the working fluid by-passes the turbine and combustion chamber the plant including ducted fans, i.e. fans with high volume, low pressure outputs, for augmenting the jet thrust, e.g. of double-flow type
- F02K3/072—Plants including a gas turbine driving a compressor or a ducted fan in which part of the working fluid by-passes the turbine and combustion chamber the plant including ducted fans, i.e. fans with high volume, low pressure outputs, for augmenting the jet thrust, e.g. of double-flow type with counter-rotating, e.g. fan rotors
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D19/00—Axial-flow pumps
- F04D19/002—Axial flow fans
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D27/00—Control, e.g. regulation, of pumps, pumping installations or pumping systems specially adapted for elastic fluids
- F04D27/002—Control, e.g. regulation, of pumps, pumping installations or pumping systems specially adapted for elastic fluids by varying geometry within the pumps, e.g. by adjusting vanes
-
- 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
- F04D29/26—Rotors specially for elastic fluids
- F04D29/32—Rotors specially for elastic fluids for axial flow pumps
- F04D29/321—Rotors specially for elastic fluids for axial flow pumps for axial flow compressors
- F04D29/322—Blade mountings
- F04D29/323—Blade mountings adjustable
-
- 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
- F04D29/26—Rotors specially for elastic fluids
- F04D29/32—Rotors specially for elastic fluids for axial flow pumps
- F04D29/34—Blade mountings
- F04D29/36—Blade mountings adjustable
-
- 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
- B64D27/00—Arrangement or mounting of power plants in aircraft; Aircraft characterised by the type or position of power plants
- B64D2027/005—Aircraft with an unducted turbofan comprising contra-rotating rotors, e.g. contra-rotating open rotors [CROR]
-
- 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
-
- 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
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T29/00—Metal working
- Y10T29/49—Method of mechanical manufacture
- Y10T29/49316—Impeller making
- Y10T29/4932—Turbomachine making
- Y10T29/49321—Assembling individual fluid flow interacting members, e.g., blades, vanes, buckets, on rotary support member
Definitions
- turbomachines are of the fanless type (in English “open rotor” or “unducted fan”).
- the pivots are mounted in an axis-symmetrical ring having a plurality of substantially cylindrical radial housings, this ring being commonly referred to as a polygonal ring.
- a flow of air entering the turbomachine 12 is compressed and is mixed with fuel and burned in a combustion chamber, the combustion gases for rotating the rotor 5.
- the rotor 5 then has a rotational movement about an axis
- the retention arms are generally projecting on the part 17, 18, which is itself able to be fitted around the axis January 1.
- the part 17, 18 is generally annular.
- the system comprises a plurality of retention arms 19, 20 arranged in a different direction.
- the arms are arranged at 90 ° to each other so as to form a cross in plan view ( Figure 9).
- Mounting parts 17, 18 at the end of the axis 1 1 may be achieved by cooperation of the parts with at least one receiving groove 24 formed in the axis 1 January. This is for example a circular groove.
- the end of the axis 1 1, intended to be inserted into the pivot 8 comprises lobes 37 projecting. These lobes 37 make it possible in particular to move the parts 17, 18 during rotation when they are placed inside the pivot 8. For this purpose, the lobes 37 are able to engage the parts. The lobes 37 also participate in the radial blocking provided by the system.
- FIGS. 5 and 6 A particular embodiment of the parts comprising the retention arms is shown in FIGS. 5 and 6.
- a first piece 17 comprises an annular base 30 having a circular aperture 31, of diameter slightly greater than that of the axis 1 January. This first part 17 is, in position inside the pivot 8, above a second part 18, along the radial axis of the fan.
- the base 30 comprises at least two projecting retention arms 19.
- the base 30 further comprises notches 36 on its upper face, for receiving the lobes 37 of the axis 1 January.
- the base 30 includes four notches on its circular periphery.
- the assembly of the retention system 1 comprises, in a possible implementation, a step of introducing the end of the main body and the retention arm inside the pivot 8, via the openings 25, 26 provided in the pivot 8.
- the assembly may comprise the steps (see FIG. 1 1) consisting of:
- the axis 1 1 is moved radially (in a direction tending to move away from the longitudinal axis of the blower), then undergoes rotation to align the arms 20 of retention of one of the parts 18 with the openings 25 of the pivot 8. This piece 18 is then removed from the pivot 8 by sliding along the axis 1 January.
- the system is therefore removable via a simple and efficient assembly and removal process.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Aviation & Aerospace Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Physics & Mathematics (AREA)
- Geometry (AREA)
- Structures Of Non-Positive Displacement Pumps (AREA)
Description
Claims
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB1507024.6A GB2521329B (en) | 2012-09-24 | 2013-09-18 | System for holding blades and assembly method |
| US14/430,729 US9903375B2 (en) | 2012-09-24 | 2013-09-18 | System for holding blades and assembly method |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR1258950A FR2995948B1 (fr) | 2012-09-24 | 2012-09-24 | Systeme de retention d'aubes et procede d'assemblage |
| FR1258950 | 2012-09-24 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| WO2014044970A1 true WO2014044970A1 (fr) | 2014-03-27 |
Family
ID=47557201
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| PCT/FR2013/052154 Ceased WO2014044970A1 (fr) | 2012-09-24 | 2013-09-18 | Système de rétention d'aubes et procédé d'assemblage |
Country Status (4)
| Country | Link |
|---|---|
| US (1) | US9903375B2 (fr) |
| FR (1) | FR2995948B1 (fr) |
| GB (1) | GB2521329B (fr) |
| WO (1) | WO2014044970A1 (fr) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2015121579A1 (fr) * | 2014-02-14 | 2015-08-20 | Snecma | Dispositif pour fixer des pales a calage variable d'une hélice non carénée d'une turbomachine |
| GB2528562A (en) * | 2014-05-28 | 2016-01-27 | Snecma | Aircraft turboprop engine comprising two coaxial propellers |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2192626A5 (fr) * | 1972-07-06 | 1974-02-08 | Rolls Royce | |
| GB2192943A (en) * | 1986-07-26 | 1988-01-27 | Rolls Royce Plc | A variable pitch blade assembly |
| DE4015207C1 (en) * | 1990-05-11 | 1991-10-17 | Mtu Muenchen Gmbh | Bearing for aircraft engine rotor blade - incorporates torsional tie rod in compact design |
| FR2946012A1 (fr) * | 2009-05-29 | 2010-12-03 | Snecma | Dispositif pour la commande de l'orientation des pales de soufflante d'un turbopropulseur |
| FR2948425A1 (fr) * | 2009-07-22 | 2011-01-28 | Airbus Operations Sas | Dispositif de retenue d'aube pour helice de turbomachine |
| FR2948973A1 (fr) * | 2009-08-05 | 2011-02-11 | Snecma | Moyeu d'helice a pales a calage variable |
Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3303889A (en) * | 1966-02-15 | 1967-02-14 | Curtiss Wright Corp | Propeller blade and hub assembly |
| US4863352A (en) * | 1984-11-02 | 1989-09-05 | General Electric Company | Blade carrying means |
| US5263898A (en) * | 1988-12-14 | 1993-11-23 | General Electric Company | Propeller blade retention system |
| US5154372A (en) * | 1990-07-23 | 1992-10-13 | General Electric Company | Torque multiplier for aircraft propeller |
| US5242265A (en) * | 1990-07-23 | 1993-09-07 | General Electric Company | Aircraft pitch change mechanism |
| FR2933955B1 (fr) * | 2008-07-18 | 2010-09-03 | Snecma | Dispositif d'attache d'une pale a calage variable |
| FR2957051B1 (fr) * | 2010-03-08 | 2012-05-11 | Snecma | Attache de pale recevant un pied de pale dans un brochage |
-
2012
- 2012-09-24 FR FR1258950A patent/FR2995948B1/fr active Active
-
2013
- 2013-09-18 WO PCT/FR2013/052154 patent/WO2014044970A1/fr not_active Ceased
- 2013-09-18 US US14/430,729 patent/US9903375B2/en active Active
- 2013-09-18 GB GB1507024.6A patent/GB2521329B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2192626A5 (fr) * | 1972-07-06 | 1974-02-08 | Rolls Royce | |
| GB2192943A (en) * | 1986-07-26 | 1988-01-27 | Rolls Royce Plc | A variable pitch blade assembly |
| DE4015207C1 (en) * | 1990-05-11 | 1991-10-17 | Mtu Muenchen Gmbh | Bearing for aircraft engine rotor blade - incorporates torsional tie rod in compact design |
| FR2946012A1 (fr) * | 2009-05-29 | 2010-12-03 | Snecma | Dispositif pour la commande de l'orientation des pales de soufflante d'un turbopropulseur |
| FR2948425A1 (fr) * | 2009-07-22 | 2011-01-28 | Airbus Operations Sas | Dispositif de retenue d'aube pour helice de turbomachine |
| FR2948973A1 (fr) * | 2009-08-05 | 2011-02-11 | Snecma | Moyeu d'helice a pales a calage variable |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2015121579A1 (fr) * | 2014-02-14 | 2015-08-20 | Snecma | Dispositif pour fixer des pales a calage variable d'une hélice non carénée d'une turbomachine |
| US10293918B2 (en) | 2014-02-14 | 2019-05-21 | Safran Aircraft Engines | Device for fixing blades with variable pitch of a non-streamlined turbomachine propeller |
| GB2528562A (en) * | 2014-05-28 | 2016-01-27 | Snecma | Aircraft turboprop engine comprising two coaxial propellers |
| GB2528562B (en) * | 2014-05-28 | 2020-08-26 | Snecma | Aircraft turboprop engine comprising two coaxial propellers |
Also Published As
| Publication number | Publication date |
|---|---|
| FR2995948B1 (fr) | 2018-07-27 |
| GB2521329B (en) | 2016-08-03 |
| FR2995948A1 (fr) | 2014-03-28 |
| US9903375B2 (en) | 2018-02-27 |
| US20150204339A1 (en) | 2015-07-23 |
| GB2521329A (en) | 2015-06-17 |
| GB201507024D0 (en) | 2015-06-10 |
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