Fluidic actuated flapper driven jet pipe servo valve for attitude control systems

Claim 1

A rocket attitude control system for a rocket having movable control surfaces disposed thereon for controlling the attitude of the rocket comprising: a. servo valve means including a body having a pair of inlet ports on opposite sides thereof, a movable nozzle having a flapper member disposed thereon intermediate said inlet ports, said nozzle means having an inlet disposed in communication with a source of substantially high-pressure fluid and an outlet in communication with said inlet and disposed for ejection of said high-pressure fluid through predetermined exit ports provided in said body of said servo valve. b. fluidic valve means having a pair of outlets each communicating with said inlet ports of said body, said fluidic valve means disposed for operation for ejecting fluid pressure through a predetermined said inlet for impingement against said flapper member of sAid nozzle for proportional displacement thereof for directing a predetermined amount of said highpressure fluid from said nozzle outlet through a desired said exit port in said body; c. prime mover means disposed for receiving said high-pressure fluid for displacement of said control surfaces to an extent which is proportional to said nozzle displacement.