CONTROL ACTUATOR Russian patent published in 2005 - IPC

FIELD: flying vehicles.

SUBSTANCE: proposed control actuator contains housing with hydraulic lines connected with pressure and drain hydraulic motor, check valve and filter in pressure hydraulic line, main spool forced wedging electrohydraulic valve, backed-up spool cylindrical distributor consisting of main spool cinematically coupled with input rocker and arranged coaxially inside back-up spool fixed in neutral position by means of centering spring provided with two eccentric cutouts arranged through 180°, first of which is constantly connected with drain hydraulic line made in sleeve provided with two additional grooves connected with pressure hydraulic line and communicating at movement of back-up spool with second eccentric cutout. Constant restrictor of small passage section is built into channel connecting space of back-up spool and electrohydraulic valve.

EFFECT: improved reliability of control.

2 dwg