| 主权项 |
1. A tiltrotor aircraft, comprising:
a body; a wing member; a power train coupled to the body and comprising a power source and a drive shaft in mechanical communication with the power source; a plurality of rotor blades comprising a first rotor blade, a second rotor blade, and a third rotor blade; and a rotor system coupled to the wing member and in mechanical communication with the drive shaft, at least part of the rotor system being tiltable between a helicopter mode position and an airplane mode position, the rotor system comprising a yoke coupled between the drive shaft and the plurality of rotor blades, wherein: the yoke comprises a plurality of arms corresponding in number to the plurality of rotor blades, the plurality of arms comprising a first arm oriented along a first axis and coupled to the first rotor blade, a second arm oriented along a second axis and coupled to the second rotor blade, and a third arm oriented along a third axis and coupled to the third rotor blade; and the plurality of arms, in combination, comprises:
a first plurality of fibrous plies, each fibrous ply of the first plurality of fibrous plies extending continuously throughout all of the plurality of arms, each fibrous ply of the first plurality of fibrous plies aligned in a direction that is substantially parallel to the first axis;a second plurality of fibrous plies, each fibrous ply of the second plurality of fibrous plies extending continuously throughout all of the plurality of arms, each fibrous ply of the second plurality of fibrous plies aligned in a direction that is substantially parallel to the second axis; anda third plurality of fibrous plies, each fibrous ply of the third plurality of fibrous plies extending continuously throughout all of the plurality of arms, each fibrous ply of the third plurality of fibrous plies aligned in a direction that is substantially parallel to the third axis. |
