Patent ID: 8857757

Claim:
A rotorcraft, comprising: a body; a power train coupled to the body and comprising a power source and a drive shaft coupled to the power source; a hub coupled to the drive shaft; a rotor blade coupled to the hub; a swashplate positioned about the drive shaft; and a pitch link coupled between the swashplate and the hub corresponding to the rotor blade, the pitch link comprising: a housing comprising a first chamber and a second chamber, wherein a first housing opening allows a first fluid to flow into the first chamber and a second housing opening allows a second fluid to flow into the second chamber; a piston assembly at least partially disposed within the housing and comprising a piston head and a piston rod coupled to the piston head, the piston head separating the first chamber from the second chamber, wherein the pitch link is coupled between the swashplate and the hub such that movement of the piston rod changes a distance between the swashplate and the hub; and a piston lock, the piston lock comprising: a second housing, wherein a third housing opening allows the second fluid to flow into the second housing; and a piston lock assembly at least partially disposed within the second housing.