Variable area orifice injector

Claim 1

A ROCKET PROPELLED DEVICE HAVING A CONVERGINGDIVERGING NOZZLE THROUGH WHICH GASES EXHAUST AND WHICH IS STEERED BY INJECTING FLUID LATERALLY INTO THE EXHAUST THRUGH ANGULAR SPACED PORTS AROUNDTHE INNER SURFACE OF THE DIVERGENT PORTION OF THE NOZZLE, THE IMPROVEMENTS, IN COMBINATIN COMPRISING: (A) A CIRCULAR INWARDLY TAPERING VALVE SEAT DISPOSED WITHIN THE WALL OF THE NOZZLE DIRECTLY ADJACENT EACH OF SAID PORTS. (B) A VALVE FOR EACH SEAT HAVING AN END CONFORMING TO THE SHAPE OF ITS SEAT, (C) A VALVE STEM AFFIXED TO EACH VALVE MONTED FOR RECTILINEAR MOVEMENT, (D) AN ACTUATOR AFFIXED TO EACH VALVE STEM FOR SELECTIVELY MOVING A VALVE INDEPENDENTLY OF THE OTHERS AND TO VARYING POSITIONS OF OPENING, WITH EACH OF SAID PORTS WHEREBY FLUID MAY BE DELIVERED TO EACH VALVE, AND LIVERED TO EACH VALVE, AND (F) THE PROXIMITY OF SAID VALVE SEATS TO SAID PORT BEING SO NEAR AS TO PRODUCE NO SUBSTANTIAL PRESSURE DROP THEREBETWEEN, SUBSTANTIALLY ALL PRESSURE DROP BETWEEN THE SOURCE OF PRESSUR AND THE NOZZLE OCCURFING ACROSS EACH VALVE, THE FLUID DISCHARGE FROM A VALVE FLOSING DIRECTLY INTO THE NOZZLE AND SUBSTANTIALLY NO FLUID REMAINGING BETWEEN EACH VALVE AND ITS PORT AFTER IT CLOSES ON ITS SEAT.