De-rotation system for counter-rotating, coaxial rotor hub...

Details De-rotation system for counter-rotating, coaxial rotor hub... De-rotation system for counter-rotating, coaxial rotor hub...

B - Operations, Transporting

64

C

B64C 27/10 (2006.01) B64C 27/04 (2006.01)

Patent

CA 2610368

A rotor hub fairing system includes an upper hub fairing, a lower hub fairing and a shaft fairing therebetween. The rotor hub fairing system is attached to the counter-rotating, coaxial rotor system through a bearing arrangement such that the shaft fairing may be positioned at an azimuthal position about the main rotor axis of rotation relative the airframe by a de-rotation system. The de-rotation system controls the position of the shaft fairing about the axis of rotation such that the shaft fairing is prevented from rotating freely in unison with either shaft as may otherwise result during some flight regimes.

Un système de carénage de moyeu de rotor comprend un carénage de moyeu supérieur, un carénage de moyeu inférieur et un carénage d'arbre disposé entre eux. Le système de carénage de moyeu de rotor est fixé au système de rotor coaxial contrarotatif via un système de roulement, de façon que le carénage d'arbre puisse être disposé dans une position azimutale autour de l'axe de rotor principal de rotation par rapport à la cellule grâce à un système de dérotation. Le système de dérotation commande la position du carénage d'arbre par rapport à l'axe de rotation, de manière à empêcher l'arbre de rotation de pivoter librement en unisson avec n'importe lequel des arbres, comme cela pourrait arriver dans certains régimes de vol.

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