Compact Linear Hydraulic Actuator

摘要

In some embodiments, an actuator includes a chamber, a piston disposed within the chamber, and a tube. The chamber has a first port and a second port. The piston comprises a first surface, a second surface, and an elongated conduit coupling the first surface to the second surface. The first surface is disposed between the first port and the second port. The second surface is offset from the first surface. The tube is disposed at least partially within the elongated conduit of the piston. The tube comprises a third port disposed within the elongated conduit of the piston and a fourth port disposed outside of the elongated conduit of the piston.

主权项

1. A rotorcraft, comprising:
a body; a power train coupled to the body and comprising an engine and a drive shaft coupled to the engine; a rotor system coupled to the power train, the rotor system comprising at least one rotor blade; and an actuation system in mechanical communication with the rotor system, the actuation system comprising a first actuator, the first actuator comprising:
a chamber having a first port and a second port;a piston disposed within the chamber, the piston comprising a first surface, a second surface, and an elongated conduit coupling the first surface to the second surface, the first surface being disposed between the first port and the second port, the second surface being offset from the first surface;a tube disposed at least partially within the elongated conduit of the piston, the tube comprising a third port disposed within the elongated conduit of the piston and a fourth port disposed outside of the elongated conduit of the piston.