Patent ID: 7313910
Filing Date: 2008-01-01
Classification: F42B

Abstract:
1. A jet vane thrust vector control system, comprising: a rocket motor having a motor case, and a case flange unit protruded from the rear end of the motor case in a ring shape; a nozzle assembly including a nozzle body having a flange unit assembled to the case flange unit and a cylindrical unit extended from the flange unit in the backward direction, and a nozzle liner assembled to the inner circumferences of the cylindrical unit and the flange unit and extended longer than the cylindrical unit in the backward direction; a skin including a skin body having its front end inner circumference closely adhered to the outer circumference of the case flange unit, and being fixed by fastening a screw passing through a main wall to the case flange unit, and a mounting strip formed on the inner circumference of the skin body as a ring-shaped plate; an actuator assembly including an actuator body fixed to the front surface of the mounting strip of the skin, and a piston rod protruded from the actuator body in the backward direction and linearly reciprocated in the forward/backward direction; a shroud assembly including a cylindrical shroud body disposed at the rear end of the cylindrical body of the nozzle body, a shroud liner assembled to the inner circumference of the shroud body, and a plurality of bosses protruded from the outer circumference of the shroud body; a jet vane assembly including a jet vane shaft rotationally supported by the bosses, and a jet vane assembled to the inside end of the jet vane shaft; a jet vane support unit including a bearing housing inserted into the boss unit, a bearing inserted into the bearing housing, for supporting the jet vane shaft, and a jet vane shaft mounting strip for supporting the outside end of the jet vane shaft; and a crank assembly engaged with the piston rod of the actuator assembly, for rotating the jet vane shaft and the jet vane in the right/left direction.