A hydraulic actuator system of an aircraft includes a hydraulic actuator having a housing with a piston having a piston shaft with a piston head attached thereto and arranged within the housing. The piston head divides in internal volume of the housing into an extend cavity and a retract cavity and the extend cavity is configured to be connected to low pressure fluid source. The system also includes a pressure selector unit fluidly connected to the retract cavity and configured to be connected to the low pressure fluid source and to a high pressure fluid source. The unit include three solenoids with the first and second connected in parallel to the fluid sources and the third solenoid having a third solenoid first input connected to the first solenoid output, a third solenoid second input connected to the second solenoid output, and a third solenoid output connected to the retract cavity.
Hydraulic actuator including a multi-head piston for hydraulic gearing
2025-01-21
Patent
Electronic Resource
English
HYDRAULIC ACTUATOR INCLUDING A MULTI-HEAD PISTON FOR HYDRAULIC GEARING
European Patent Office | 2023
|HYDRAULIC ACTUATOR INCLUDING A MULTI-HEAD PISTON FOR HYDRAULIC GEARING
European Patent Office | 2025
|HYDRAULIC ACTUATOR INCLUDING A MULTI-HEAD PISTON FOR HYDRAULIC GEARING
European Patent Office | 2023
|Hydraulic actuator including a multi-head piston for hydraulic gearing
European Patent Office | 2024
|