VARIABLE NOZZLE APPARATUS OF DUAL THRUST PROPULSION SYSTEM

摘要

The present invention provides a variable nozzle device comprising a nozzle part on a combustion tube, which is released from a first state to lock the movement of the nozzle part by external power to be moved to the inside of the combustion tube; a nozzle pressing part on the combustion tube to press the nozzle part towards the inside of the combustion tube; a pintle part on the front of the nozzle part to adjust the area of the flow passage of the nozzle part; and a nozzle movement part on the nozzle part to move the nozzle part in the first state to lock the movement of the nozzle part to be in a second state whereby the nozzle part is unlocked to approach the pintle part using a pressure change inside the combustion tube after the combustion of a propellant.