Patent ID: 9327831
Filing Date: 2016-05-03
CPC Classification: B64C

Claim Text:
1. A rotorcraft, comprising: a body; a wing coupled to the body; a power train coupled to at least one of the body or the wing and comprising a power source and a shaft in mechanical communication with the power source; a tiltrotor assembly pivotally coupled to the wing and in mechanical communication with the shaft, the tiltrotor assembly comprising: a hub in mechanical communication with the shaft; a rotor blade in mechanical communication with the hub; a flapping lock deployable in a locked position in an unlocked position, the flapping lock operable in the locked position to prevent at least some flapping movement of the hub relative to the shaft, the flapping lock operable in the unlocked position to allow the at least some flapping movement of the hub relative to the shaft; and the flapping lock comprising an actuator, a downstop in mechanical communication with the shaft, and a flapping stop in mechanical communication with the hub.