DOUBLE-CHAMBER COMBINED ACTUATOR Russian patent published in 2004 - IPC

FIELD: control systems for aircrafts.

SUBSTANCE: actuator has housing with passages connected with the pressure lines and discharging lines of two independent hydraulic systems, double-chamber hydromotor of tandem type, electrohydraulic power amplifier, steering machine with a feedback pickup, cross-feeding valve, spring-loaded stop, electrohydraulic valves, and doubled slide cylindrical distributors which are made of main slides kinematically connected with the inlet control rockers and axially aligned inside the doubling slides locked in the neutral position with the centering spring. The main slide has additional collar which is arranged inside the bore of the doubling slide. The collar has eccentric hollows which form closed spaces connected with the pressure line through the electrohydraulic valve when it is turned on, and with the discharging line when it is shut off. The inner bores of the doubling slide are provided with two closed spaces made of eccentric hollows and positioned from the side opposite to the closed space connected with the electrohydraulic valve such that the cross-piece between the hollows is mounted each 180^o with respect to the closed space connected to the electrohydraulic valve.

EFFECT: enhanced reliability of control.

1 dwg