EP2217492A2 - Rotor swashplate - Google Patents

Rotor swashplate

Info

Publication number
EP2217492A2
EP2217492A2 EP08871174A EP08871174A EP2217492A2 EP 2217492 A2 EP2217492 A2 EP 2217492A2 EP 08871174 A EP08871174 A EP 08871174A EP 08871174 A EP08871174 A EP 08871174A EP 2217492 A2 EP2217492 A2 EP 2217492A2
Authority
EP
European Patent Office
Prior art keywords
rotor
axis
swashplate
ball
crown
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.)
Withdrawn
Application number
EP08871174A
Other languages
German (de)
French (fr)
Inventor
Yann Willinger
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
GUILHOT-GAUDEFFROY Michel
Original Assignee
GUILHOT-GAUDEFFROY Michel
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by GUILHOT-GAUDEFFROY Michel filed Critical GUILHOT-GAUDEFFROY Michel
Publication of EP2217492A2 publication Critical patent/EP2217492A2/en
Withdrawn legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B64—AIRCRAFT; AVIATION; COSMONAUTICS
    • B64C—AEROPLANES; HELICOPTERS
    • B64C27/00—Rotorcraft; Rotors peculiar thereto
    • B64C27/54—Mechanisms for controlling blade adjustment or movement relative to rotor head, e.g. lag-lead movement
    • B64C27/58—Transmitting means, e.g. interrelated with initiating means or means acting on blades
    • B64C27/59—Transmitting means, e.g. interrelated with initiating means or means acting on blades mechanical
    • B64C27/605—Transmitting means, e.g. interrelated with initiating means or means acting on blades mechanical including swash plate, spider or cam mechanisms

Definitions

  • the present invention relates to the field of rotary wing aircraft, which include helicopters and gyronefs in particular.
  • the devices constituting the cyclic plateau are known conventionally, for example described in the free encyclopedia, Wikifugdia: "It is simply recalled here that the swashplate is the essential element for controlling a helicopter. It makes it possible to transmit to the blades of the main rotor the control commands.
  • the plate is in fact composed of two superimposed rings, sliding around the mast of the main rotor, which rotates on itself, driven by the engine (s) through the main gearbox, and ends with a hub to which are fixed the blades.
  • the helicopter swashplate is a mechanical device that cyclically modifies the pitch angle of the rotating blades, it consists of a ball joint at its center, and a washer-like shape at the periphery.
  • the ball joint pierced at its center by an axis allows it to slide along this axis, axis of rotation of the rotor.
  • the rotor is perpendicular to the axis and parallel to the plane of the patella.
  • the washer from the ball is free of movement in its plane relative to that of the rotor, parallel displacement and nonparallel movement. It is rotated by the rotor.
  • Each blade leg is equipped with a lever, these levers are actuated by rods connected to the washer, so that when the rotor plane and the plane of the ball-washer (swashplate) are spread apart or tightened, all the blades have the same pitch angle, (not general) and when these planes form an angle, the pitch angles of the blades vary cyclically (pitch and roll control) "To account for gyroscopic effects, stability, and device This mechanism for operation is complicated by other devices (Bell Bar etc.).
  • the present invention constitutes an important technical advance for rotary wing machines whose cyclic pitch angle is to be cyclically controlled.
  • the advantage of this invention is to have a device with reduced vulnerability, simpler, more robust, more reliable, more compact, lighter and with less stress, less source of vibration and propagation thereof, and very low maintenance.
  • Another important advantage is to adapt well to the solutions of hollow and fixed rotor axis of rotation, for example central vertical cylinder here cited for the example with the benefit of the freedom internally of equipment easily traversing the entire device. rotation, this advantage is particularly interesting in the case of two coaxial counter-rotating rotors.
  • the present invention can be used for a single rotor with the platform between the nacelle and the rotor, or above the nacelle-rotor if the drive shaft of the rotor is a tube.
  • the invention presented is a swashplate characterized in that the rotor (1) is used to center the swashplate (2) relative to the main axis (8) of rotation of the rotors, the rotor comprises a cylindrical portion (3). ) which surrounds a crown ball (4) and which drives it in rotation.
  • the rotor is centered with respect to the vertical axis (8) by a rotation device represented here by a bearing (5), it is the only mechanical link for centering the rotor assembly. cyclic tray.
  • the center of the crown ball belongs to the axis (8).
  • the rotational drive connection of the crown ball by the rotor is ensured by an axis (6) screwed into the median plane (9) of the crown ball, sliding in a vertical groove on the rotor centering cylinder.
  • the spherical crown carries in the center a rotation device represented here by rolling (10) whose inner portion carries an inner plane (1 1) operated at least three points.
  • This spherical crown and the inner plane forms the heart of the rotor swashplate).
  • This internal plane operable at least three points is here for the example represented by a ring (1 1) of triangular shape carrying at each of its vertices a small ball (12, 13, 14).
  • This inner part is free of movement along the axis (8) of the rotor, and may have an angle relative thereto. It is constrained by rotational locking relative to this axis by means of a point connection in the example here represented by a part comprising a vertical groove (15) and fixed to the vertical axis (8) of rotation by the nacelle and where is slid a pin (16) fixed on the triangular inner ring.
  • the swashplate assembly (ball-crown (4), bearing (10), and the inner part represented here by the triangular ring (1 1) can be moved in the direction of the axis of the rotor, and also in such a way its plane is free of angular movement with respect to this axis (8)
  • this inner ring is operated at three points each provided with a ball joint (12, 13, 14) connected by a connecting rod control (17) to a lever (18) of the servomotor
  • the servomotors are fixed on a fixed platform relative to the axis (8) of rotation.In an alternative to these servomotors, they are advantageously replaced (more reliability, control , precision, lifetime) by motors driving a ball screw, annular linear connection whose nut carries a cylinder lined with a damper to receive the corresponding small joint of the inner plane.
  • the ball-ring carries circularly distributed links at the leverage of each of blade feet, these links are ideally positioned in its median plane (9), here shown, it is connected by
  • the equal displacement of the three points allows the control of general pitch, and that of yaw in the case of counter-rotating rotor by general pitch differentiation between the two rotors, which introduces with respect to equilibrium a differential reaction on the air and allows the rotation of the platform on the right as on the left.
  • An uneven displacement introduces a cyclic variation of the pitch angle of the blades thus allowing pitching and rolling maneuvers. All the maneuvers of the rotating wings are assured.
  • the ball joints (20, 21, 22) of the crown ball are in the same plane as the ball joints (12, 13, 14) of the crown.
  • the control organs have in their movement a greater linearity.
  • the attached drawings are for example, a prototype was made, it was successfully mounted for the first time on the flying machine EyesFIy, it has not been the subject of communication. This device greatly contributed to the 25% saving in weight, to the greater precision of the controls, to less fragility, to more compactness, to fewer parts, to the absence of sliding of the swashplate on the shaft. main, more robust for a long period of use and therefore amortization with lower hourly operating costs than those of prior exploratory models EyesFIy and more generally of the state of the prior art. Cyclic Rotor Tray
  • Figure 1 Top view of the swashplate and rotor assembly.
  • Figure 2 AA sectional view of the swashplate assembly and rotor.
  • Figure 3 Sectional view along plane (9) median plane of the crown ball.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Aviation & Aerospace Engineering (AREA)
  • Rehabilitation Tools (AREA)
  • Transmission Devices (AREA)
  • Reciprocating Pumps (AREA)

Abstract

The swashplate on a rotor uses a cylindrical part of the rotor to centre itself with respect to the main axis of rotation. More compact, more robust and with fewer parts, this device in which the ball joint-ring bears at its centre a rotation device here represented by a rolling bearing and the internal part of which bears an internal plane which is operated at at least three points, forms the swashplate assembly (ball joint-ring, rolling bearing, and the internal part), this part which drives the swashplate assembly is represented here by the triangular ring, it can be moved in the direction of the axis of the rotor, and also in such a way that its plane is free to move angularly relative to this axis and thus allows a cyclic influence on the pitch angle of the blades through connections between the ball joint ring and the blade roots, all rotary wing manoeuvres being provided for.

Description

La présente invention relève du domaine des aéronefs à aile tournante, dont font partie les hélicoptères et les gyronefs en particulier. On connaît de façon classique, les dispositifs constituant le plateau cyclique, par exemple décrits dans l'encyclopédie libre, Wikipédia: «On rappelle simplement ici que le plateau cyclique est l'élément essentiel permettant de piloter un hélicoptère. Il permet de transmettre aux pales du rotor principal les ordres de pilotage. Le plateau est en fait composé de deux couronnes superposées, coulissant autour du mât du rotor principal, lequel tourne sur lui-même, entraîné par le ou les moteurs au travers de la boîte de transmission principale, et se termine par un moyeu auquel sont fixées les pales. Le plateau cyclique d'hélicoptère est un dispositif mécanique qui permet de modifier cycliquement l'angle de pas des pales en rotation, il est constitué d'une rotule en son centre, et d'une forme de rondelle en périphérie. La rotule percée en son centre par un axe lui permet de coulisser le long de cet axe, axe de rotation du rotor. Le rotor est perpendiculaire à l'axe et parallèle au plan de la rotule. La rondelle de part la rotule est libre de déplacement dans son plan par rapport à celui du rotor, déplacement parallèle et déplacement non parallèle. Elle est entrainée en rotation par le rotor. Chaque pied de pale équipé d'un levier, ces leviers sont actionnés par des tiges liées à la rondelle, si bien que quand on écarte ou ressert le plan du rotor et le plan de la rondelle-rotule (plateau cyclique), toutes les pales ont le même angle de pas, (pas général) et quand ces plans forment un angle, les angles de pas des pales varient cycliquement (commande de tangage et de roulis) » Pour tenir compte des effets gyroscopiques, de la stabilité, et du dispositif de renvoi des commandes ce mécanisme pour pouvoir fonctionner est compliqué d'autres dispositifs (barre de Bell etc.). Certains brevets décrivent des procédés avec un servomoteur de secours, mais ils appartiennent tous à la même technique ci-dessus décrite, sans que rien de nouveau ne soit produit. The present invention relates to the field of rotary wing aircraft, which include helicopters and gyronefs in particular. The devices constituting the cyclic plateau are known conventionally, for example described in the free encyclopedia, Wikipédia: "It is simply recalled here that the swashplate is the essential element for controlling a helicopter. It makes it possible to transmit to the blades of the main rotor the control commands. The plate is in fact composed of two superimposed rings, sliding around the mast of the main rotor, which rotates on itself, driven by the engine (s) through the main gearbox, and ends with a hub to which are fixed the blades. The helicopter swashplate is a mechanical device that cyclically modifies the pitch angle of the rotating blades, it consists of a ball joint at its center, and a washer-like shape at the periphery. The ball joint pierced at its center by an axis allows it to slide along this axis, axis of rotation of the rotor. The rotor is perpendicular to the axis and parallel to the plane of the patella. The washer from the ball is free of movement in its plane relative to that of the rotor, parallel displacement and nonparallel movement. It is rotated by the rotor. Each blade leg is equipped with a lever, these levers are actuated by rods connected to the washer, so that when the rotor plane and the plane of the ball-washer (swashplate) are spread apart or tightened, all the blades have the same pitch angle, (not general) and when these planes form an angle, the pitch angles of the blades vary cyclically (pitch and roll control) "To account for gyroscopic effects, stability, and device This mechanism for operation is complicated by other devices (Bell Bar etc.). Some patents describe methods with a backup servomotor, but they all belong to the same technique described above, without anything new being produced.
Ce système classique de commande cyclique du pas des pales est adopté surtout depuis 1948 avec des améliorations sur le rattrapage de jeu sur les nombreuses biellettes, cela reste une mécanique compliqué, fragile, nécessitant une lourde maintenance. Sur l'hélicoptère classique l'axe est en rotation avec le rotor ce qui n'est pas le cas des gyroptères à voilures tournantes coaxiales contrarotatives avec une nacelle centrale fixe. Sur ces gyroptères des systèmes à anneaux périphériques pour les commandes cycliques de pas ont été inventés ils sont plus lourds et nécessitent des renvois qui sont souvent le siège de jeux importants.This classic system of cyclic control of the pitch of the blades is adopted especially since 1948 with improvements on the catch-up of the game on the numerous links, it remains a complicated mechanics, fragile, requiring heavy maintenance. On the conventional helicopter, the axis rotates with the rotor, which is not the case with coaxial rotating counter-rotating rotary gyropters with a fixed central nacelle. On these gyropters peripheral ring systems for cyclic step controls have been invented they are heavier and require referrals that are often the seat of important games.
La présente invention constitue une avancée technique importante pour les machines à voilure tournante dont on veut commander cycliquement l'angle de pas des pales.The present invention constitutes an important technical advance for rotary wing machines whose cyclic pitch angle is to be cyclically controlled.
L'avantage de cette invention est d'avoir un dispositif à vulnérabilité réduite, plus simple, plus robuste, plus fiable, plus compacte, plus léger et avec moins de contrainte, moins de source de vibrations et de propagation de celle-ci, ainsi qu'une maintenance très réduite. Un autre avantage important est de bien s'adapter aux solutions d'axe de rotation rotor creux et fixe, par exemple cylindre vertical central ici cité pour l'exemple avec le bénéfice de la liberté en interne d'équipements traversant aisément tout le dispositif de rotation, cet avantage est particulièrement intéressant dans le cas de deux rotors contrarotatifs coaxiaux. La présente invention peut être utilisée pour un mono rotor avec le plateau entre la nacelle et le rotor, ou au-dessus de la nacelle-rotor si l'axe d'entraînement du rotor est un tube. Un des avantages outre la simplicité et autres qualités est de permettre de pouvoir traverser le rotor par l'intérieur du tube. L'invention présentée est un plateau cyclique caractérisée en ce que le rotor (1 ) est utilisé pour centrer le plateau cyclique (2) par rapport à l'axe principal (8) de rotation des rotors, le rotor comporte une partie cylindrique (3) qui entoure une rotule-couronne (4) et qui entraine celle-ci en rotation. Dans ce dispositif, selon l'invention, le rotor est centré par rapport à l'axe vertical (8) par un dispositif de rotation ici représenté par un roulement (5), il est le seul lien mécanique de centrage de l'ensemble rotor-plateau cyclique. Le centre de la rotule-couronne appartient à l'axe (8). Ici dans l'exemple représenté la liaison d'entrainement en rotation de la rotule-couronne par le rotor est assurée par un axe (6) vissé dans le plan médian (9) de la rotule-couronne, coulissant dans une rainure verticale sur le cylindre de centrage du rotor. La rotule-couronne porte au centre un dispositif de rotation représenté ici par roulement (10) dont la partie interne porte un plan interne (1 1 ) manœuvré en au moins trois points. (Cette rotule-couronne et le plan interne forme le cœur du plateau cyclique sur rotor). Ce plan interne manœuvrable en au moins trois points est ici pour l'exemple représenté par une couronne (1 1 ) de forme triangulaire portant à chacun de ses sommets une petite rotule (12, 13, 14).The advantage of this invention is to have a device with reduced vulnerability, simpler, more robust, more reliable, more compact, lighter and with less stress, less source of vibration and propagation thereof, and very low maintenance. Another important advantage is to adapt well to the solutions of hollow and fixed rotor axis of rotation, for example central vertical cylinder here cited for the example with the benefit of the freedom internally of equipment easily traversing the entire device. rotation, this advantage is particularly interesting in the case of two coaxial counter-rotating rotors. The present invention can be used for a single rotor with the platform between the nacelle and the rotor, or above the nacelle-rotor if the drive shaft of the rotor is a tube. One of the advantages besides the simplicity and other qualities is to allow to be able to cross the rotor through the inside of the tube. The invention presented is a swashplate characterized in that the rotor (1) is used to center the swashplate (2) relative to the main axis (8) of rotation of the rotors, the rotor comprises a cylindrical portion (3). ) which surrounds a crown ball (4) and which drives it in rotation. In this device, according to the invention, the rotor is centered with respect to the vertical axis (8) by a rotation device represented here by a bearing (5), it is the only mechanical link for centering the rotor assembly. cyclic tray. The center of the crown ball belongs to the axis (8). Here, in the example shown, the rotational drive connection of the crown ball by the rotor is ensured by an axis (6) screwed into the median plane (9) of the crown ball, sliding in a vertical groove on the rotor centering cylinder. The spherical crown carries in the center a rotation device represented here by rolling (10) whose inner portion carries an inner plane (1 1) operated at least three points. (This spherical crown and the inner plane forms the heart of the rotor swashplate). This internal plane operable at least three points is here for the example represented by a ring (1 1) of triangular shape carrying at each of its vertices a small ball (12, 13, 14).
Cette partie interne est libre de mouvement le long de l'axe (8) du rotor, et peut avoir un angle par rapport à celui-ci. Elle est contrainte par blocage en rotation par rapport à cet axe au moyen d'une liaison ponctuelle dans l'exemple ici représentée par une pièce comportant une rainure verticale (15) et fixée à l'axe vertical (8) de rotation par la nacelle et ou vient glisser un ergot (16) fixé sur la couronne interne triangulaire.This inner part is free of movement along the axis (8) of the rotor, and may have an angle relative thereto. It is constrained by rotational locking relative to this axis by means of a point connection in the example here represented by a part comprising a vertical groove (15) and fixed to the vertical axis (8) of rotation by the nacelle and where is slid a pin (16) fixed on the triangular inner ring.
L'ensemble plateau cyclique (rotule-couronne (4), roulement (10), et la partie interne représenté ici par la couronne triangulaire (1 1 ) peut être déplacée dans le sens de l'axe du rotor, et également de telle sorte que son plan soit libre de mouvement angulaire par rapport à cet axe (8). Dans l'exemple ici représenté, cette couronne interne est manœuvrée en trois points munis chacun d'une rotule (12, 13, 14) liée par une biellette de commande (17) à un levier (18) de servomoteur. Les servomoteurs sont fixés sur une plateforme fixe par rapport à l'axe (8) de rotation. Dans une variante à ces servomoteurs, ils sont remplacés avantageusement (plus de fiabilité, contrôle, précision, durée de vie) par des moteurs entrainant une vis à bille, liaison linéaire annulaire dont l'écrou porte un cylindre garni d'un amortisseur pour recevoir la petite rotule correspondante du plan interne. La rotule-couronne porte répartis circulairement des liens au levier de chacun des pieds de pale, ces liens sont positionnés idéalement dans son plan médian (9), ici représentée, elle est liée au moyen de rotules (19)(20)(21 ) par biellettes (22)(23)(24) au levier (25) des pieds de pale (26) respectivement en nombre égal au nombre de pales du rotor constitué, et ainsi fonction de la position dans l'espace du plateau intérieur( ici représenté par la couronne triangulaire^ 1 ), il est possible d'agir cycliquement sur l'angle du pas des pales. Le déplacement égal des trois points permet la commande de pas général, et celle de lacet dans le cas de rotor contrarotatif par différentiation de pas général entre les deux rotors, ce qui introduit par rapport à l'équilibre à un différentiel de réaction sur l'air et permet la rotation de la nacelle à droite comme à gauche. Un déplacement inégal introduit une variation cyclique de l'angle du pas des pales en permettant ainsi les manœuvres de tangage et de roulis. Toutes les manœuvres des voilures tournantes sont assurées.The swashplate assembly (ball-crown (4), bearing (10), and the inner part represented here by the triangular ring (1 1) can be moved in the direction of the axis of the rotor, and also in such a way its plane is free of angular movement with respect to this axis (8) In the example shown here, this inner ring is operated at three points each provided with a ball joint (12, 13, 14) connected by a connecting rod control (17) to a lever (18) of the servomotor The servomotors are fixed on a fixed platform relative to the axis (8) of rotation.In an alternative to these servomotors, they are advantageously replaced (more reliability, control , precision, lifetime) by motors driving a ball screw, annular linear connection whose nut carries a cylinder lined with a damper to receive the corresponding small joint of the inner plane.The ball-ring carries circularly distributed links at the leverage of each of blade feet, these links are ideally positioned in its median plane (9), here shown, it is connected by means of ball joints (19) (20) (21) by links (22) (23) (24) to the lever ( 25) feet of blade (26) respectively in number equal to the number of blades of the rotor formed, and thus a function of the position in the space of the inner plate (here represented by the triangular crown ^ 1), it is possible to act cyclically on the pitch angle of the blades. The equal displacement of the three points allows the control of general pitch, and that of yaw in the case of counter-rotating rotor by general pitch differentiation between the two rotors, which introduces with respect to equilibrium a differential reaction on the air and allows the rotation of the platform on the right as on the left. An uneven displacement introduces a cyclic variation of the pitch angle of the blades thus allowing pitching and rolling maneuvers. All the maneuvers of the rotating wings are assured.
Dans le mode de réalisation préféré de l'invention, ici présenté pour un rotor tripale, les rotules (20, 21 ,22) de la rotule-couronne sont dans le même plan que les rotules (12, 13, 14) de la couronne interne, les organes de commande ont alors dans leur mouvement une plus grande linéarité. Les dessins ci-joints sont la pour l'exemple, un prototype a été réalisé, il a été monté avec succès pour une première fois sur l'engin volant EyesFIy, il n'a pas fait l'objet de communication. Ce dispositif a contribué grandement au 25% d'économie de poids, à la plus grande précision des commandes, à moins de fragilité, à plus de compacité, à moins de pièces, à l'absence de glissement du plateau cyclique sur l'arbre principal, à plus de robustesse pour une longue durée d'utilisation et donc d'amortissement avec des coûts horaires d'exploitations réduits que ceux des maquettes exploratoires EyesFIy précédentes et que plus généralement de l'état de l'art antérieur. Plateau Cyclique sur rotorIn the preferred embodiment of the invention, here presented for a three-blade rotor, the ball joints (20, 21, 22) of the crown ball are in the same plane as the ball joints (12, 13, 14) of the crown. internal, the control organs have in their movement a greater linearity. The attached drawings are for example, a prototype was made, it was successfully mounted for the first time on the flying machine EyesFIy, it has not been the subject of communication. This device greatly contributed to the 25% saving in weight, to the greater precision of the controls, to less fragility, to more compactness, to fewer parts, to the absence of sliding of the swashplate on the shaft. main, more robust for a long period of use and therefore amortization with lower hourly operating costs than those of prior exploratory models EyesFIy and more generally of the state of the prior art. Cyclic Rotor Tray
Figures présentées pour l'exempleFigures presented for the example
Figure 1 Vue de dessus de l'ensemble plateau cyclique et rotor. Figure 2 Vue en coupe AA de l'ensemble plateau cyclique et rotor. Figure 3 Vue en coupe selon plan (9) plan médian de la rotule couronne.Figure 1 Top view of the swashplate and rotor assembly. Figure 2 AA sectional view of the swashplate assembly and rotor. Figure 3 Sectional view along plane (9) median plane of the crown ball.
Repérage des sous parties par rapport au texte :Locating subparts in relation to the text:
1 . Rotor.1. Rotor.
2. Ensemble plateau cyclique (4 ; 6 ; 9 ; 10 ; 1 1 ; 12 ; 13 ; 14 ; 16 ; 19 ; 10 ; 21 ).2. Swashplate assembly (4; 6; 9; 10; 11; 12; 13; 14; 16; 19; 10; 21).
3. Partie cylindrique du rotor. 4. Rotule-couronne.3. Cylindrical part of the rotor. 4. Crown-head.
5. Roulement du rotor.5. Rotor bearing.
6. Axe d'entraînement de la rotule-couronne par le rotor.6. Drive shaft of the crown ball by the rotor.
7. (Rainure sur le cylindre du rotor, cylindre de centrage du plateau cyclique. ) 8. Axe principal du rotor.7. (Groove on the rotor cylinder, centering cylinder of the swashplate.) 8. Main axis of the rotor.
9. Plan médian de la rotule-couronne.9. Median plane of the crown patella.
10. Roulement du plateau cyclique.10. Rolling of the swashplate.
1 1 . Plan interne (couronne triangulaire) du plateau cyclique.1 1. Internal plane (triangular crown) of the cyclic plateau.
12. 13. 14. Rotules de pilotage du plateau cyclique. 15. Pièce fixée à la nacelle comportant une rainure verticale de blocage en rotation de la couronne triangulaire (1 1 ).12. 13. 14. Swashplate control ball joints. 15. Part fixed to the nacelle having a vertical groove for locking in rotation of the triangular crown (1 1).
16. Ergot de blocage en rotation sur la couronne triangulaire.16. Locking pin in rotation on the triangular crown.
17. Biellette de commande de plateau cyclique.17. Swashplate control link.
18. Levier du servomoteur. 19. 20. 21. Rotules de commande de l'angle de pas des pales.18. Servomotor lever. 19. 20. 21. Control knobs for pitch angle of the blades.
22.23.24. Biellettes de commande de l'angle de pas des pales.22.23.24. Tie rods for the pitch angle of the blades.
25. Levier d'un pied de pale.25. Lever of a foot of blade.
26. Pied de pale. 26. Foot of blade.

Claims

R E V E N D I C AT I O N SR E V E N D I C AT IO N S
1 - Plateau cyclique sur rotor (1 ) caractérisé en ce que le rotor est utilisé pour centrer le plateau cyclique (2), par rapport à l'axe principal (8) de rotation du rotor, le rotor comporte une partie cylindrique (3) qui entoure une rotule-couronne (4) et qui entraine celle-ci en rotation. Dans ce dispositif, selon l'invention le rotor est centré par rapport à l'axe vertical (8) par un dispositif de rotation, ici représenté par un roulement (5), il est le seul lien mécanique de centrage de l'ensemble rotor-plateau cyclique, le centre de la rotule-couronne appartient à l'axe (8), la liaison d'entrainement en rotation de la rotule-couronne par le rotor est assurée par un axe (6) vissé dans le plan médian (9) de la rotule-couronne, coulissant dans une rainure verticale sur le cylindre de centrage du rotor, la rotule-couronne porte au centre un dispositif de rotation dont la partie interne porte un plan manœuvré au moins en trois points par des liens à des organes de commandes, cette partie interne est libre de mouvement le long de l'axe (8) du rotor, et peut avoir un angle par rapport à celui-ci, elle est contrainte par blocage en rotation par rapport à cet axe au moyen d'au moins une liaison ponctuelle, cette partie interne peut être déplacée dans le sens de l'axe du rotor, et également de telle sorte que son plan soit libre de mouvement angulaire par rapport à cet axe (8), la rotule-couronne porte répartis circulairement des liens au levier des pieds de pale, de telle manière qu'en agissant en au moins trois points sur la partie interne on manœuvre cycliquement le pas des pales pour les commandes de pas général, de tangage et de roulis, ainsi que de lacet par un différentiel de pas général dans le cas de rotors contrarotatifs coaxiaux, (Cette rotule-couronne et le plan interne forme le cœur du plateau cyclique sur rotor)1 - Rotary rotor plate (1) characterized in that the rotor is used to center the swashplate (2) with respect to the main axis (8) of rotation of the rotor, the rotor has a cylindrical portion (3) which surrounds a crown-ball (4) and which drives it in rotation. In this device, according to the invention, the rotor is centered with respect to the vertical axis (8) by a rotation device, here represented by a bearing (5), it is the only mechanical link for centering the rotor assembly. cyclic plate, the center of the crown ball belongs to the axis (8), the drive connection in rotation of the crown ball by the rotor is provided by an axis (6) screwed in the median plane (9). ) of the crown-ball, sliding in a vertical groove on the centering cylinder of the rotor, the crown-head carries in the center a rotation device whose inner part carries a plane operated at least in three points by links to organs of controls, this inner part is free of movement along the axis (8) of the rotor, and may have an angle with respect to it, it is constrained by locking in rotation relative to this axis by means of at least one point link, this inner part can be moved in the direction of the axis of the rotor, and also so that its plane is free of angular movement relative to this axis (8), the ball-ring carries circularly distributed links to the lever of the blade roots, so that by acting in at least three points on the inner part, the pitch of the blades is cyclically maneuvered for general pitch, pitch and roll commands, as well as yaw by a general pitch differential in the case of coaxial counter-rotating rotors, ( This crown ball and the inner plane forms the heart of the rotor swashplate)
2. plateau cyclique sur rotor selon la revendication 1 , caractérisé en ce que les liens au levier des pieds de pale soient situé sur la rotule- couronne dans son plan médian (P).2. swashplate rotor according to claim 1, characterized in that the links to the lever of the blade roots are located on the crown-ball in its median plane (P).
3. plateau cyclique sur rotor selon la revendication 1 , caractérisé en ce que les liens aux organes de commande sur la partie interne soient dans le même plan que sur la rotule-couronne les liens aux leviers des pieds de pales.Rotary swashplate according to Claim 1, characterized in that the links to the control members on the inner part are in the same plane as on the patella crowns the links to the levers of the blade's feet.
4. plateau cyclique sur rotor selon la revendication 1 , caractérisé en ce que dans le cas de deux rotors coaxiaux la fonction lacet est obtenue par un déplacement vertical et opposé des liens de commandes. Déplacements identiques ou proportionnels fonction des vents de Froude.Rotor swashplate according to claim 1, characterized in that in the case of two coaxial rotors the yaw function is obtained by a vertical and opposite displacement of the control links. Identical or proportional displacements according to the winds of Froude.
5. plateau cyclique sur rotor selon la revendication 1 , caractérisé en ce que dans le cas de deux rotors coaxiaux, l'axe central soit un cylindre creux permettant la continuité verticale de l'engin volant et de tout le système embarqué Rotor swashplate according to claim 1, characterized in that in the case of two coaxial rotors, the central axis is a hollow cylinder allowing the vertical continuity of the flying machine and the entire on-board system.
EP08871174A 2007-11-02 2008-10-31 Rotor swashplate Withdrawn EP2217492A2 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR0707725A FR2923210A1 (en) 2007-11-02 2007-11-02 Swash plate and rotor assembly for gyrocraft, has crown-ball joint connected to levers by balls via tie rods such that pitch angle of blades is cyclically controlled by acting in three points on crown to control collective pitch and yaw
PCT/FR2008/001539 WO2009092898A2 (en) 2007-11-02 2008-10-31 Rotor swashplate

Publications (1)

Publication Number Publication Date
EP2217492A2 true EP2217492A2 (en) 2010-08-18

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EP08871174A Withdrawn EP2217492A2 (en) 2007-11-02 2008-10-31 Rotor swashplate

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EP (1) EP2217492A2 (en)
CA (1) CA2704579A1 (en)
FR (1) FR2923210A1 (en)
WO (1) WO2009092898A2 (en)

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Also Published As

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WO2009092898A2 (en) 2009-07-30
CA2704579A1 (en) 2009-07-30
WO2009092898A3 (en) 2009-09-24
WO2009092898A4 (en) 2009-11-19
FR2923210A1 (en) 2009-05-08

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