ADJUSTABLE SUPERSONIC NOZZLE OF JET TURBINE ENGINE Russian patent published in 2013 - IPC F02K1/12 

FIELD: engines and pumps.

SUBSTANCE: adjustable supersonic nozzle includes a housing, converging flaps that are hinged to it and connected to diverging flaps, a synchronisation mechanism, actuating hydraulic cylinders of converging flaps and external flaps. The synchronisation mechanism is made in the form of levers hinged through tie-rods to adjacent converging flaps. Each external flap is hinged at its front end to the turning lever of adjacent converging flaps, and its middle part is connected through additional tie-rods to adjacent diverging flaps. Each actuating hydraulic cylinder is arranged between adjacent external flaps across the nozzle longitudinal axis.

EFFECT: invention allows improving the nozzle reliability and life owing to damping vibrations of diverging flaps.

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