GAS-TURBINE ENGINE REACTION NOZZLE FLAP CONTROL SYSTEM Russian patent published in 2006 - IPC F02K1/15 

FIELD: gas-turbine engines; automatic control systems.

SUBSTANCE: proposed flap control system of gas-turbine engine reaction nozzle has plunger pump, control unit and regulation unit. Used is made of variable-displacement plunger pump with inlet and outlet channel and mechanism to change position of inclined plate. Control unit is connected at one side to spaces of servopistons of nozzle hydraulic cylinders, and at other side, to outlet channel of plunger pump. Regulation unit is coupled with mechanism to change position of inclined plate of plunger pump. Selector coupled with spaces of servopistons of hydraulic cylinders is introduced additionally into control system. Regulation unit contains maximum and minimum pressure limit valve after pump, master valve and valve to limit pressure in rodless space of servopistons of nozzle hydraulic cylinders. All valves are connected with mechanism changing position of pump inclined plate. Outlet channel of pump is connected to three first valves. Fourth valve is coupled with rodless space of servopistons of hydraulic cylinders, and third valve is connected additionally with selector.

EFFECT: improved reliability of operation of control system.

5 cl, 1 dwg