Variable thrust rocket engine

Claim 1

A LIQUID BI-PROPELLANT VARIABLE THRUST REACTION ENGINE COMPRISING AN OPEN ENDED HOUSING ENCLOSING AN INJECTOR AREA, A COMBUSTOR CHAMBER, AND AN EXHAUST THROAT, SAID HOUSING HAVING A PLURALITY OF AXIALLY SPACED OXIDIZER ORITHEREIN, A SLEEVE HAVING A FLANGE SECURED TO SAID FLANGE TO THE FORWARD END OF SAID HOUSING AND CONCENTRICALLY EXTENDING INTO SAID INJECTOR AREA, SAID SLEEVE HAVING AN AXIAL CAVITY THERETHROUGH, AN ELONGATED PINTLE SLIDEABLY MOUNTED IN SAID CAVITY HAVING A BULBOUS END FOR VARYING THE SIZE OF SAID THROAT, SAID SLEEVE HAVING A PLURALITY OF AXIALLY SPACED FUEL ORIFICES FOR INTRODUCING A FUEL INTO SAID INJECTOR AREA, AN AXIALLY SLIDEABLE ANNULAR SHUTTLE MOUNTED ON SAID SLEEVE FOR COVERING SAID OXIDIZER AND FUEL ORIFICES, SAID SHUTTLE HAVING A PLURALITY OF CIRCUMFERENTIALLY SPACED AND AXIALLY EXTENDING BORES OPENING INTO SAID INJECTOR AREA, AN IGNITER HAVING A CATALYST BED MOUNTED IN EACH OF SAID BORES, OXIDIZER CONDUIT MEANS CONNECTED FOR THE PASSAGE OF AN OXIDIZER TO SAID OXIDIZER ORIFICES AND A PORTION THROUGH SAID IGNITER INTO SAID INJECTOR AREA, FUEL CONDUIT MEANS CONNECTED FOR THE PASSAGE OF A FUEL TO SAID FUEL ORIFICES, MEANS FOR MOVEMENT OF SAID SHUTTLE INCLUDING A PASSAGE THROUGH SAID SLEEVE FOR THE APPLICATION OF FLUID PRESSURE TO THE FORWARD END OF SAID SHUTTLE, AND MEANS CONNECTING SAID SHUTTLE TO SAID PINTLE FOR SIMULTANEOUS MOVEMENT THEREWITH.