Thrust vector control

Claim 2

FOR USE WITH A THRUST VECTOR CONTROL INCLUDING A ROCKET NOZZLE, FIRST AND SECOND INJECTION ORIFICES OPPOSITELY DISPOSED IN THE SIDEWALL OF SAID ROCKET NOZZLE AND A SOURCE OF FLUID UNDER PRESSURE, SAID FIRST AND SECOND INJECTION ORIFICES ARRANGED TO INJECT SAID PRESSURIZED FLUID INTO SAID NOZZLE TRANSVERSELY TO THE LONGITUDINAL AXIS OF SAID NOZZLE TO THEREBY EFFECT A CORRESPONDING VARIATION IN THE NOZZLE THRUST VECTOR, THE COMBINATION OF A FIRST INJECTOR UNIT CONNECTED TO SAID SOURCE ASSOCIATED WITH SAID FIRST ORIFICE COMPRISING A VALVE MEMBER FOR CONTROLLING THE FLOW THROUGH SAID FIRST ORIFICE, A CYLINDER AND A DIFFERENTIAL AREA PISTON RECIPROCABLE IN SAID CYLINDER, A CONDUIT COMMUNICATING THE SMALL AREA END OF SAID PISTON WITH SAID SOURCE, A TORQUE MOTOR INCLUDING A PAIR OF OPPOSING ORIFICES AND FLAPPER VALVE MEMBER MOVABLE BETWEEN SAID ORIFICE, A CONDUIT COMMUNICATING ONE OF SAID ORIFICES WITH SAID SOURCE, ANOTHER CONDUIT CONNECTING SAID OTHER ORIFICE WITH A LOW PRESSURE SOURCE HAVING A CHECK VALVE THEREIN, A CONTROL PRESSURE CHAMBER DISPOSED BETWEEN SAID ORIFICES HAVING A FLUID PRESSURE LEVEL VARIABLE BETWEEN THE PRESSURE AT SAID SOURCE OF FLUID UNDER PRESSURE AND THE PRESSURE OF SAID LOW PRESSURE SOURCE, MEANS COMMUNICATING THE LARGE DIAMETER END OF SAID PISTON WITH SAID CONTROL PRESSURE CHAMBER; A SECOND INJECTOR UNIT CONNECTED TO SAID SOURCE ASSOCIATED WITH SAID SECOND ORIFICE COMPRISING A VALVE MEMBER FOR CONTROLLING THE FLOW THROUGH SAID SECOND ORIFICE, A CYLINDER AND A SECOND DIFFERENTIAL AREA PISTON RECIPROCABLE IN SAID CYLINDER, A CONDUIT COMMUNICATING THE SMALL AREA END OF SAID PISTON WITH SAID SOURCE OF FLUID UNDER PRESSURE, AND A CONDUIT CONNECTING THE LARGE DIAMETER END OF SAID SECOND PISTON WITH SAID CONTROL PRESSURE CHAMBER, THE RELATIVE AREAS OF THE LARGE AREA ENDS OF SAID PISTONS WITH RESPECT TO EACH OTHER AND THEIR CORRESPONDING SMALL AREA ENDS BEING SUCH THAT BOTH SAID VALVE MEMBERS ARE HELD CLOSED WHEN SAID FLAPPER VALVE MEMBER IS IN ITS NULL POSITION, AND WHEN SAID FLAPPER VALVE IS MOVED CLOSER TO SAID ONE ORIFICE AND THE CONTROL PRESSURE LEVEL IS REDUCED BELOW A FIRST THRESHOLD VALUE, ONE OF SAID VALVES IS CAUSED TO OPEN AND WHEN SAID FLAPPER VALVE IS MOVED CLOSER TO SAID OTHER ORIFICE, AND THE CONTROL PRESSURE IS INCREASED ABOVE A SECOND, HIGHER THRESHOLD VALUE, SAID ONE VALVE IS CLOSED AND THE OTHER OF SAID VALVE IS CAUSED TO BE OPENED.