COMBINED CONTROL UNIT Russian patent published in 2014 - IPC F15B9/03 

FIELD: aircraft engineering.

SUBSTANCE: this device is intended for aircraft control systems. This drive comprises two-chamber tandem hydraulic motor, two control units of identical design. Each includes case with channels connected with pressure and drain lines of one of two independent hydraulic systems of the object. Dubbed slide pressure control valve consists of the main slide valve arranged coaxially inside redundant slide valve. Hydroelectric power amplifier, actuator with feedback sensor, spring-loaded retainer, bypassing valve, hydroelectric valves for actuation of combined control mode and main slide valve locking. Main slide valves and actuator rod of every control unit are articulated and coupled with hydraulic motor input and output links to allow correction of control in two electric ACS channels at joint operation of both hydraulic systems and one electric channel at fault of whatever hydraulic system.

EFFECT: higher reliability.

2 cl, 1 dwg