WO2009144217A1 - Systeme simplifie de commande de calage d'une pale d'helice d'un turbomoteur pour aeronef - Google Patents
Systeme simplifie de commande de calage d'une pale d'helice d'un turbomoteur pour aeronef Download PDFInfo
- Publication number
- WO2009144217A1 WO2009144217A1 PCT/EP2009/056361 EP2009056361W WO2009144217A1 WO 2009144217 A1 WO2009144217 A1 WO 2009144217A1 EP 2009056361 W EP2009056361 W EP 2009056361W WO 2009144217 A1 WO2009144217 A1 WO 2009144217A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- abutment surface
- track
- actuating
- locking
- notch
- 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
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01D—NON-POSITIVE DISPLACEMENT MACHINES OR ENGINES, e.g. STEAM TURBINES
- F01D7/00—Rotors with blades adjustable in operation; Control thereof
-
- 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
- F04D29/362—Blade mountings adjustable during rotation
- F04D29/364—The blades having only a predetermined number of possible positions
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- 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
- F05D2260/40—Transmission of power
- F05D2260/402—Transmission of power through friction drives
- F05D2260/4023—Transmission of power through friction drives through a friction clutch
-
- 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
- F05D2260/50—Kinematic linkage, i.e. transmission of position
-
- 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
- F05D2260/70—Adjusting of angle of incidence or attack of rotating blades
- F05D2260/79—Bearing, support or actuation arrangements therefor
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- 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 generally to a control system for setting a propeller blade of an aircraft turbine engine.
- the invention also relates to a propeller equipped with such a control system, and to a control method of this system.
- the invention applies to any type of propeller, simple propeller or counter-rotating propeller system, preferably for turbojet or turboprop.
- a turboprop engine may be equipped with a stall control system associated with each blade of its propeller, in order to adapt the orientation of these blades to the speed of the aircraft.
- Such a system is designed so that the blade remains fixed in incidence when the control system is not actuated, and must therefore be able to withstand the action of the torque generated by the aerodynamic and centrifugal forces acting on this blade during the rotation of the propeller. More generally, to maintain its setting, it is considered that the blade must be locked in both directions of rotation along its own axis.
- the system is usually equipped with a locking mechanism, usually type providing contact / friction between two parts, such as a disk brake. To control the blade in incidence, it is therefore necessary to perform a preliminary step of unlocking the blade in incidence, by breaking the contact between the two parts of the locking mechanism.
- the invention firstly relates to a control system for setting a propeller blade of a turbine engine for an aircraft, comprising:
- annular foot receiving part of said blade the rotation of which is intended to provide wedging in incidence of this blade
- said annular piece defining a first track having at least one first and one second notches circumferentially spaced apart from one another; and each other delimited by a first abutment surface in a first direction of the circumferential direction and a second abutment surface in a second direction of the circumferential direction opposite said first direction r
- a second substantially annular track concentric with said first track and arranged facing and externally with respect thereto, said second abutment surface of the first notch and said first abutment surface of the second notch also each facing said second track; an element for actuating the annular piece arranged between the first and second tracks, said actuating element having a first abutment surface in the first direction of the circumferential direction and a second abutment surface in the second direction of the circumferential direction; the circumferential direction;
- first and second locking elements being able to occupy, during the operation of the turbine engine: a normal bracing position, in which said first locking element is firstly in contact with the second abutment surface of the first notch, away from said first abutment surface of said notch and the second abutment surface of the actuating member, and secondly in contact with the second track, wherein a first spring positioned therebetween stop surface of the notch and said first locking member causes a first effort of contacting said second abutment abutment surface with the first locking member, and generating a first reaction force of said second track on said first locking member, the first contact force and the first reaction force providing a first bracing the first and second tracks,
- timing control system is of simplified design compared to those encountered in the prior art, since the same and unique control ensures the release and movement of the blade in incidence. No separate blocking mechanism is therefore required, as was the case previously, which provides advantages in terms of mass, reliability and bulk.
- the system according to the invention also provides a high accuracy in the setting of the blade associated with this system.
- said first and second abutment surfaces of the actuating element are also each oriented toward said first track.
- the system comprises resilient biasing means coupled to said actuating element, and allowing, when the latter is not subjected to said first actuating torque or to said second actuating torque, to rotate this element of rotation. actuation relative to said first track, so as to automatically return said first and second locking members to normal bracing position.
- the system comprises an actuating motor that rotates said actuating element. It is therefore this motor which is intended to deliver the actuating torque causing the displacement of the locking elements in their unlocking position, as well as the rotation of the first track relative to the second track.
- said first and second locking members are rollers.
- said first and second locking elements are balls. In each of these cases, rolling elements are therefore provided, which advantageously limits the friction compared to those encountered on the locking mechanisms of the type disc brakes of the prior art.
- said first and second locking members form a doublet of locking elements
- the system is equipped with a plurality of doublets of locking elements circumferentially spaced from each other.
- each blocking element in the normal bracing position, must therefore withstand lower intensity compression forces compared to those encountered in the single doublet solution, which notably makes it possible to improve the reliability of the system.
- the invention also relates to a propeller for an aircraft turbine engine comprising a stall control system as described above, associated with each of its blades.
- the invention also relates to a turbomachine for an aircraft, comprising at least one propeller as described above.
- the turbomachine preferably comprises a counter-rotating propeller system, with each of its two propellers designed in the manner described above, this turbomachine preferably being a turboprop, but may alternatively be a turbojet engine.
- the propeller system is intended to constitute the fan of the turbojet engine.
- the subject of the invention is also a method for controlling a control system for setting a propeller blade of a turbine engine, as described above. According to this method, when an incidence pitch change is required, an appropriate actuating torque is applied to said actuating element.
- FIG. 1 shows a schematic longitudinal half-sectional view of an aircraft turbine engine propeller portion, according to a preferred embodiment of the present invention
- FIG. 2 represents a perspective view of a retaining ring of the blades of the helix of FIG. 1
- FIG. 3 represents, in detail, a system for controlling the setting of a blade of the helix of FIG. 1, in transverse half-section, and also corresponding to a half-sectional view taken along the line III- III of Figure 4
- FIG. 4 shows, in detail, the cut-away control system taken along the line IV-IV of FIG. 3, with the locking elements of the system occupying their normal bracing position
- FIG. 5a shows a view similar to that of FIG. 4, with the locking elements of the system occupying their unlocking position in the first direction, adopted during wedging of the blade to reduce the incidence of this. this ;
- FIG. 5b shows a view similar to that of FIG. 5a, with the blocking elements of the module occupying their unlocking position in the second direction, adopted during wedging of the blade in order to increase the incidence of this. this ;
- FIG. 6 shows, in perspective, a part of a wedging system according to another preferred embodiment of the present invention.
- the X axis corresponds to the longitudinal direction of the helix 1, which direction also corresponds to the longitudinal direction of the turboprop engine intended to integrate such a helix 1.
- the Y axis corresponds to the transverse direction of the helix 1 , and the Z axis to the vertical direction or the height, these three axes being orthogonal to each other.
- the propeller 1 comprises a stator or casing 2, centered on a longitudinal axis 4, parallel to the axis X.
- This stator 2 is in known manner intended to be integral with the other housings of the turbomachine.
- a main direction of flow of air through the helix 1 is shown schematically by the arrow 10 parallel to the X axis, this main direction of flow also serving as a reference for the terms "upstream” and "Downstream” employees below.
- the two propellers (only one being shown) are intended to rotate in opposite directions around the axis 4 on which they are centered, the rotations being effected. relative to the stator 2 remaining stationary.
- the propeller 1 comprises a drive shaft 16 centered on the axis 4, and intended to be rotated by a mechanical transmission device (not shown), for example forming an epicyclic gearbox, itself driven by the turbine of the turbomachine.
- a mechanical transmission device for example forming an epicyclic gearbox, itself driven by the turbine of the turbomachine.
- a pair of counter-rotating propellers it is also conceivable that they be driven directly by a counter-rotating turbine.
- the hollow shaft 16 fixed at its downstream end a rotor 18 housing at its outer radial end, namely at its circumferential ring, propeller blades 6. More precisely, as shown in Figure 2 , the rotor 18 is equipped with a blade retention ring 19, centered on the axis 4, and having a plurality of circumferentially spaced housings 21, each intended to receive a blade root, and being part of integral of a timing control system of said blade.
- the wedging control system 26, shown diagrammatically in FIG. 1, makes it possible to move the blade 6 to which it is associated between a position of minimum incidence and a position of maximum incidence, with respect to the axis 4.
- the displacement of the blade 6 between these two positions is made by pivoting it on itself, that is to say around its main axis 24, which also corresponds to the axis of the housing of the ring of retention in which is inserted the blade root 23.
- each of the blades 6 of the propeller is equipped with its own timing control system 26, the latter being controlled preferably simultaneously so that each blade has, at any time , the same impact.
- a stall control system 26, according to a preferred embodiment of the present invention, will now be described with reference to FIGS. 3 and 4.
- the pivot 52 also known as the pivot, presents itself internal bore 53 in which is housed the blade root 23, being integral therewith in rotation along the axis 24.
- the rotation of the part 52 is intended to ensure the rotation of the blade 6 along its axis 24 , and thus intended to ensure the wedging in incidence of this blade.
- This part 52 which preferably constitutes the internal part of the control system centered on the axis 24, defines a first track 50 oriented radially outwards, and substantially annular. It has a first and a second notch 54a, 54b open radially outwardly and spaced from each other in a circumferential direction 55.
- the first notch 54a is delimited by a first stop surface B1 in a first direction 55a of the circumferential direction 55, and a second abutment surface B2 in a second direction 55b of this direction, opposite to the first direction.
- the preferably planar surface B1 is preferably orthogonal to the circumferential local direction, namely the tangential direction.
- the surface B2 also preferably flat, is also oriented radially outwards, its angle with the circumferential local direction being preferably between 5 and 85 °, the value chosen being in particular chosen as a function of the coefficients of friction materials in the presence, to be able to generate a bracing which will be described below.
- the two surfaces B1, B2 are circumferentially spaced from one another by a notch bottom.
- the second notch 54b is delimited by a first abutment surface B '1 in the first direction 55a of the direction 55, and by a second abutment surface B' 2 in the second direction 55b.
- the surface B '2 preferably plane
- the surface B'1 is preferably orthogonal to the local circumferential direction.
- the surface B'1 which is also preferably plane, is also oriented radially outwards, its angle with the circumferential local direction being preferably between 5 and 85 °, the value selected being here also chosen as a function of coefficients of friction of the materials in presence, to be able to generate an arching-butt.
- the two surfaces B'1, B '2 are spaced circumferentially from one another by a notch bottom.
- the surfaces B2 and B '1 are located back to back on the same outer radial projection 57 of the annular piece 52, traversed by a radial plane of symmetry P passing through the axis 24.
- the notches 54a, 54b and their surfaces B1 , B2, B'1, B '2 are effectively arranged on either side of the plane P, symmetrically with respect thereto, as can be seen in FIG. 4. Therefore, in the second direction 55b , successively, the surface B1, the bottom of the notch 54a, the surface B2, the surface B'1, the bottom of the notch 54b, then the surface B '2.
- the system 26 also comprises a second substantially annular track 56, also of axis 24 and arranged facing and outwardly with respect to the first track 50, creating an annular space between them.
- This track 56 oriented radially inwards, is provided on the retaining ring 19, remotely and concentrically at the blade root housing 21.
- the two surfaces B2 and B '1 are each substantially oriented towards this second track 56, because of their inclination described above.
- the system 26 further comprises an actuating element 60 of the annular piece 52, arranged between the first and second tracks 50, 56.
- This element 60 takes the form of a lug secured to the outer radial end of a plate 61 is substantially annular, also of axis 24. It is preferably in pivot connection with the second track 56 on which it is preferably in contact, its plate 61 being connected to the rotor of an actuating motor 40, in order to be able to it is noted that the motor 40 has a stator fixed on the rotor 18 of the propeller 1.
- the actuating element 60 presents a first stop surface C1 in the first direction 55a, and a second stop surface C2 in the second direction 55b.
- the surface C2 which is preferably plane, is also oriented radially towards and in the direction of the first notch 54a, its angle with the local circumferential direction being preferably between 5 and 85 °.
- the surface C1 which is preferably plane, is also oriented radially inwards and towards the second notch 54b, its angle with the circumferential local direction also being preferably between 5 and 85 °.
- a first locking element 64a preferably in the form of a roll
- a second locking element 64b is provided between the first and second tracks, housed in the second notch 54b and facing the first abutment surface Cl of the element 60.
- FIG. 4 shows the control system 26 with the blocking elements 64a, 64b occupying, during the operation of the turbine engine, a normal bracing position.
- the first locking element 64a is firstly in contact with the second abutment surface B2, away from the first abutment surface B1 and the notch bottom, and secondly in contact with the second track 56.
- This position is particular provided by a first spring 59a, placed between the first abutment surface Bl and the roller 64a.
- This spring 59a then exerts an action ri on the roll 64a which tends to move the latter in the second direction 55b, until it comes into contact with the abutment surface B2.
- the roll 64a is thus stopped in rotation in this second direction 55b by the second abutment surface B2, it then exerts a first contact force F1 on the roller 64a.
- This effort F1 generates a first reaction force R1 of the second track 56 on the roll 64a.
- the first contact force F1 and the first reaction force R1 jointly provide a first bracing of the first and second tracks, making them integral in rotation in the first direction 55a.
- an aerodynamic force is exerted on the blades, and generates a given torque of the piece 52, due to its mechanical connection to the blades.
- the part 52 will advantageously remain motionless in rotation with respect to the retention ring 19, along the axis 24, since the torque applied to this annular piece 52 will only reinforce the bracing provided by the roller 64a, by increasing the intensity of efforts Fl and Rl.
- the second locking element 64b is firstly in contact with the first abutment surface B'1, away from the second abutment surface B '2 and the bottom of the abutment. notch, and secondly in contact with the second track 56.
- This position is in particular provided by a second spring 59b, placed between the second abutment surface B '2 and the roller 64b.
- This spring 59b then exerts an action r2 on the roll 64b which tends to move the latter in the first direction 55a.
- the roll 64b being stopped in rotation in this first direction 55a by the first abutment surface B'1, it then exerts a second contact force F2 on the roll 64b.
- This effort F2 generates a second reaction force R2 of the second track 56 on the roll 64b.
- the second contact force F2 and the second reaction force R2 together provide a second bracing of the first and second tracks, making them integral in rotation in the second direction 55b.
- the piece 52 will remain advantageously rotatable with respect to the retaining ring 19, along the axis 24, since the torque applied to this annular piece 52 will only reinforce the bracing provided by the roll 64b, by increase in the intensity of the efforts F2 and R2.
- This normal jamming position of the locking elements 64a, 64b is retained as long as the motor 40 is not actuated, and prohibits any modification of the incidence of the blade.
- the system 26 To vary the incidence of the blade, the system 26 must be controlled in order to bring the rollers 64a, 64b in another position, called unlocking in one or other of the two directions 55a, 55b.
- Figure 5a refers to the case where the blade must be changed in incidence towards its position of minimum incidence.
- the roller 64a is brought into contact with the second abutment surface C2.
- This position is ensured by the application of a first actuating torque C in the first direction 55a, on the actuating element 60, and more precisely on the plate 61 via the motor 40, driving the pin 60 to come into contact with the roller 64a.
- This torque C is of value making it possible to exert, on the first roller 64a, with the second abutment surface C2, a first release force F '1 opposing the force ri of the first spring, aiming at putting the latter into position. compression so as preferably to bring the roller 64a in contact with the surface B1.
- the release force F '1 is sufficient to nullify the first support force F1.
- the compression of the spring may be such that the roller comes into contact with the abutment surface B1.
- the reaction force Rl is extremely low, allowing rolling and / or sliding between the two elements. .
- This position makes it possible to rotate the piece 52 relative to the second track 56 of the retention ring 19, along the axis 24, in the first direction 55a. It is indeed the assembly comprising the first track 50, the first and second locking elements 64a, 64b and the actuating element 60 which are simultaneously rotated, under the effect of this animated element 60 of the couple C, by pressing the roller 64a on the abutment surface B1, possibly via the spring 59a.
- this principle applies irrespective of the direction of the torque applied to the annular piece 52, resulting from the aerodynamic force exerted on the blade.
- the second bracing does not create an obstacle to the rotation of the pivot 52 in the first direction 55a, at least because this rotation tends to eliminate the contact between the second roll 64b and the abutment surface B'1, making zero F2 effort and thus leading to break this second riveting.
- the roll 64b is then able to accompany the rotation of the pivot 52, in roll and / or sliding on the second track 56 while remaining in its second notch.
- the actuating torque C simultaneously makes it possible to unlock the system 26, and to cause rotation of the pivot 52 with respect to the second track 56 of the retaining ring 19 of the rotor. This causes a variation in the setting of the blade 6, from its position of maximum incidence to its position of minimum incidence.
- the control system 26 is automatically returned to its configuration ensuring the normal position of locking the rollers 64a, 64b, by means of elastic return means coupled to the actuating element 60, such that a spring (not shown).
- This spring makes it possible to rotate this actuating element 60 relative to the first track 50 so as to break the contact between the roller 64a and the surface C2.
- the spring 59a pushes the roller 64a on the abutment surface B2, again ensuring the first bracing.
- the spring 59b pushes the roller 64b on the abutment surface B'1, again ensuring the second bracing.
- the pivot 52 retains its angular position relative to the second track, which ensures a high accuracy of wedging of the blade.
- Figure 5b refers to the case where the blade must be changed in incidence towards its position of maximum incidence.
- the roll 64b is brought into contact of the first abutment surface C1.
- This position is ensured by the application of a second actuating torque C in the second direction 55b, on the actuating element 60, and more precisely on the plate 61 via the engine. 40, causing the lug 60 to come into contact with the roller 64b.
- This torque C is of value making it possible to exert, on the second roller 64b, with the first abutment surface C1, a second release force F '2 s' opposing the force r2 of the second spring, aiming at putting the latter into position.
- the release force F' 2 is sufficient to make zero the second support force F2. There is thus loss of contact between the roller 64b and the abutment surface B'1, so that the second bracing is broken.
- the compression of the spring may be such that the roller 64b comes into contact with the abutment surface B '2.
- the reaction force R2 is extremely low, allowing rolling and / or sliding between the two elements. This position makes it possible to rotate the piece 52 relative to the second track 56 of the retaining ring 19, along the axis 24, in the second direction 55b.
- the first bracing does not create an obstacle to the rotation of the pivot 52 in the second direction 55b, at least because this rotation tends to eliminate the contact between the first roll 64a and the abutment surface B2, nullifying the effort F1 and thus leading to break this first riveting.
- the roller 64a is then able to accompany the rotation of the pivot 52, roll and / or sliding on the second track 56 while remaining in its first notch.
- the actuating torque C simultaneously makes it possible to unlock the system 26, and to cause rotation of the pivot 52 with respect to the second track 56 of the retaining ring 19 of the rotor.
- This causes a variation in the setting of the blade 6, from its position of minimum incidence to its position of maximum incidence.
- elements 64a, 64b are alternately arranged, with for each doublet, an actuating element 60 arranged between the two elements 64a, 64b, as described for the previous preferred embodiment.
- these elements 60, each pin-shaped, are integral with the plate 61 driven by the actuating motor (not shown in Figure 6). This configuration generally makes it possible to distribute more homogeneously, in the circumferential direction, the forces ensuring the bracing of the first and second tracks.
- the locking elements 64a, 64b are preferably rollers, and the stop surfaces C1, C2 with which they cooperate, substantially planar surfaces
- an alternative embodiment may be to provide that the elements 64a, 64b are balls, and the surfaces C1, C2 substantially spherical surfaces.
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Structures Of Non-Positive Displacement Pumps (AREA)
- Control Of Turbines (AREA)
- Turbine Rotor Nozzle Sealing (AREA)
Abstract
Description
Claims
Priority Applications (7)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CA2725871A CA2725871C (fr) | 2008-05-29 | 2009-05-26 | Systeme simplifie de commande de calage d'une pale d'helice d'un turbomoteur pour aeronef |
| BRPI0912511 BRPI0912511B1 (pt) | 2008-05-29 | 2009-05-26 | sistema de comando de ajuste de uma pá de hélice de um turbomotor para aeronave, hélice para turbomotor de aeronave, turbomáquina para aeronave e processo de controle de um sistema de comando de ajuste de uma pá de hélice de um turbomotor |
| EP09753872.2A EP2304191B1 (fr) | 2008-05-29 | 2009-05-26 | Système simplifié de commande de calage d'une pale d'hélice d'un turbomoteur pour aéronef |
| RU2010154141/06A RU2501954C2 (ru) | 2008-05-29 | 2009-05-26 | Упрощенная система регулирования шага лопасти воздушного винта в авиационном турбовальном двигателе |
| US12/993,485 US8596975B2 (en) | 2008-05-29 | 2009-05-26 | Simplified system for controlling propeller blade pitch in an aircraft turboshaft engine |
| CN2009801190532A CN102046924B (zh) | 2008-05-29 | 2009-05-26 | 用于控制飞行器涡轮轴发动机中的螺旋桨叶片的螺距的控制系统 |
| JP2011510985A JP5457437B2 (ja) | 2008-05-29 | 2009-05-26 | 航空機ターボシャフトエンジンのためのプロペラブレードの設定を制御するための簡略化されたシステム |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR0853501A FR2931796B1 (fr) | 2008-05-29 | 2008-05-29 | Systeme simplifie de commande de calage d'une pale d'helice d'un turbomoteur pour aeronef |
| FR0853501 | 2008-05-29 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| WO2009144217A1 true WO2009144217A1 (fr) | 2009-12-03 |
Family
ID=40198360
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| PCT/EP2009/056361 Ceased WO2009144217A1 (fr) | 2008-05-29 | 2009-05-26 | Systeme simplifie de commande de calage d'une pale d'helice d'un turbomoteur pour aeronef |
Country Status (9)
| Country | Link |
|---|---|
| US (1) | US8596975B2 (fr) |
| EP (1) | EP2304191B1 (fr) |
| JP (1) | JP5457437B2 (fr) |
| CN (1) | CN102046924B (fr) |
| BR (1) | BRPI0912511B1 (fr) |
| CA (1) | CA2725871C (fr) |
| FR (1) | FR2931796B1 (fr) |
| RU (1) | RU2501954C2 (fr) |
| WO (1) | WO2009144217A1 (fr) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR3150833A1 (fr) * | 2023-07-05 | 2025-01-10 | Safran Aircraft Engines | Turbomachine comprenant une soufflante portant des aubes a calage variable |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2979162B1 (fr) * | 2011-08-17 | 2018-04-27 | Safran Aircraft Engines | Procede de determination des performances d'au moins une helice d'une turbomachine |
| FR3024179B1 (fr) | 2014-07-25 | 2016-08-26 | Snecma | Systeme d'alimentation en air sous pression installe dans une turbomachine d'aeronef comportant des moyens d'etancheite |
| US10830066B2 (en) * | 2016-01-05 | 2020-11-10 | Safran Aircraft Engines | Low-pitch variable-setting fan of a turbine engine |
| EP4185522B1 (fr) * | 2020-07-24 | 2024-08-28 | Safran Aircraft Engines | Turbomachine d'aeronef comportant des aubes d'helice a calage variable |
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| GB2194991A (en) | 1986-09-09 | 1988-03-23 | Gen Electric | Pitch change mechanism for gas turbine propulser blades |
| US5779446A (en) * | 1995-11-07 | 1998-07-14 | Sundstrand Corporation | Air driven turbine including a blade pitch control system |
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| US2252544A (en) * | 1937-04-30 | 1941-08-12 | Autogiro Co Of America | Aircraft having rotative sustaining wings or blades |
| SU688706A1 (ru) * | 1976-07-11 | 1979-09-30 | Предприятие П/Я А-1270 | Вентил тор измен емого шага дл двухконтурного трубовентил торного двигател |
| CH631634A5 (en) * | 1978-07-27 | 1982-08-31 | Landert Jakob | Adjustable pitch propeller, especially for model aircraft and ventilators. |
| SU976135A1 (ru) * | 1981-04-06 | 1982-11-23 | Всесоюзный Конструкторско-Экспериментальный Институт Автобусостроения | Рабочее колесо вентил тора |
| US5263898A (en) * | 1988-12-14 | 1993-11-23 | General Electric Company | Propeller blade retention system |
| US4948339A (en) * | 1989-01-23 | 1990-08-14 | General Electric Company | Propeller blade counterweight |
| JPH08312588A (ja) * | 1995-05-22 | 1996-11-26 | Hitachi Ltd | 自動反転式ジェットファン |
| US6827664B2 (en) * | 2001-11-15 | 2004-12-07 | General Motors Corporation | Transmission |
| JP3977065B2 (ja) * | 2001-11-30 | 2007-09-19 | Ntn株式会社 | クラッチユニット |
| US7503750B1 (en) * | 2005-02-07 | 2009-03-17 | Rotating Composite Technologies, Llc | Variable pitch rotor blade with double flexible retention elements |
| JP4806264B2 (ja) * | 2005-06-08 | 2011-11-02 | Ntn株式会社 | 逆入力防止クラッチ |
| JP2007002934A (ja) * | 2005-06-24 | 2007-01-11 | Ntn Corp | クラッチ機構および電動アクチュエータ |
| US8496098B1 (en) * | 2008-12-23 | 2013-07-30 | Crh North America, Inc. | Manual seat height adjuster mechanism |
-
2008
- 2008-05-29 FR FR0853501A patent/FR2931796B1/fr not_active Expired - Fee Related
-
2009
- 2009-05-26 WO PCT/EP2009/056361 patent/WO2009144217A1/fr not_active Ceased
- 2009-05-26 JP JP2011510985A patent/JP5457437B2/ja active Active
- 2009-05-26 US US12/993,485 patent/US8596975B2/en active Active
- 2009-05-26 CN CN2009801190532A patent/CN102046924B/zh active Active
- 2009-05-26 EP EP09753872.2A patent/EP2304191B1/fr active Active
- 2009-05-26 RU RU2010154141/06A patent/RU2501954C2/ru active
- 2009-05-26 CA CA2725871A patent/CA2725871C/fr active Active
- 2009-05-26 BR BRPI0912511 patent/BRPI0912511B1/pt active IP Right Grant
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2194991A (en) | 1986-09-09 | 1988-03-23 | Gen Electric | Pitch change mechanism for gas turbine propulser blades |
| US5779446A (en) * | 1995-11-07 | 1998-07-14 | Sundstrand Corporation | Air driven turbine including a blade pitch control system |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR3150833A1 (fr) * | 2023-07-05 | 2025-01-10 | Safran Aircraft Engines | Turbomachine comprenant une soufflante portant des aubes a calage variable |
Also Published As
| Publication number | Publication date |
|---|---|
| JP5457437B2 (ja) | 2014-04-02 |
| CA2725871A1 (fr) | 2009-12-03 |
| FR2931796A1 (fr) | 2009-12-04 |
| RU2501954C2 (ru) | 2013-12-20 |
| BRPI0912511B1 (pt) | 2019-11-26 |
| US8596975B2 (en) | 2013-12-03 |
| US20110076143A1 (en) | 2011-03-31 |
| CA2725871C (fr) | 2016-07-12 |
| EP2304191A1 (fr) | 2011-04-06 |
| CN102046924B (zh) | 2013-12-11 |
| BRPI0912511A2 (pt) | 2015-10-13 |
| CN102046924A (zh) | 2011-05-04 |
| JP2011522151A (ja) | 2011-07-28 |
| RU2010154141A (ru) | 2012-07-10 |
| FR2931796B1 (fr) | 2010-07-30 |
| EP2304191B1 (fr) | 2014-07-02 |
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