Aircraft including engine controlled by synchrophasing

Details Aircraft including engine controlled by synchrophasing Aircraft including engine controlled by synchrophasing

B - Operations, Transporting

64

D

B64D 31/12 (2006.01) B64D 27/00 (2006.01) F16F 15/02 (2006.01)

Patent

CA 2731962

The aircraft (50) of the invention includes at least one engine (56) having counter-rotating rotors (58a, 58b), the engine or at least one of the engines having imbalances associated with at least one ellipse (70). The aircraft includes at least one vibration damper (64, 66) attached in an arrangement such that, at a given engine speed and for at least one given common direction of a large axis (68) of the ellipse or at least one of the ellipses, a speed related to the two ends of the damper is higher than for any other arrangement of the damper.

L'aéronef (50) comprenant au moins un moteur (56) à rotors contrarotatifs (58a, 58b), le ou au moins l'un des moteurs présentant des balourds associés à au moins une ellipse (70). Il comprend au moins un amortisseur de vibrations (64, 66) fixé dans une disposition telle que, à une vitesse donnée du moteur et pour au moins une même direction donnée d'un grand axe (68) de l'ellipse ou de l'une au moins des ellipses, une vitesse relative de deux extrémités de l'amortisseur est plus élevée que pour tout autre disposition de l'amortisseur.

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