Space vector torsion resistant device of ball socket wobble nozzle of small solid rocket engine

The invention provides a space vector torsion resistant device of a ball socket wobble nozzle of a small solid rocket engine. The space vector torsion resistant device of the ball socket wobble nozzle of the small solid rocket engine comprises a nozzle fixed body, a nozzle movable body circumferentially arranged inside the nozzle fixed body, a movable body supporting lug, a fixed body supporting frame connected with the outside of the nozzle fixed body in a sleeve mode, a fixed body supporting lug arranged on the fixed body supporting frame, and a torsion resistant spring; the end of the nozzle movable body, which is close to the nozzle fixed body, is provided with the movable body supporting lug; one end of the torsion resistant spring is fixed to the fixed body supporting lug, and the other end of the torsion resistant spring is fixed to the movable body supporting lug. The space vector torsion resistant device of the ball socket wobble nozzle of the small solid rocket engine has the advantages of simple structure, light weight, working reliability, small additional torque of the wobble nozzle and the like, ensures the stable and reliable structure of the ball socket wobble nozzle in the installation, storage, transport processes, and is more practical than a rubber torsion resistant structure in the temperature using range and improves the process reliability of the ball socket wobble nozzle due to the metal torsion resistant structure as well as improves the performance of the ball socket wobble nozzle.