公开(公告)号：US20230339603A1

公开(公告)日：2023-10-26

申请号：US17728002

申请日：2022-04-25

Applicant: Hamilton Sundstrand Corporation

Inventor： Frank Perrelli ,  Morgan O'Rorke

IPC: B64C19/00 ,  F15B15/26 ,  F15B13/044

CPC classification number: B64C19/00 ,  F15B15/26 ,  F15B13/044

Abstract: Hydraulic actuator systems of aircraft are described. The hydraulic actuator systems include a hydraulic actuator having a housing and piston therein. The piston includes a piston head separating the housing into a retract cavity and an extend cavity. An actuator controller is hydraulically coupled to the retract cavity by a first hydraulic line and hydraulically coupled to the extend cavity by a second hydraulic line and configured to control a hydraulic pressure within each of the retract cavity and the extend cavity to control actuation of the hydraulic actuator. A position-lock controller is arranged along at least one of the first hydraulic line and the second hydraulic line, the position-lock controller is configured to hydraulically decouple the actuator controller from at least one of the retract cavity and the extend cavity.