Adjustable jet propulsion nozzle with secondary air flow control

Claim 1

IN AN EXHAUST NOZZLE FOR A REACTION ENGINE: A PRIMARY NOZZLE SECTION RECEIVING WORKING FLUID FROM SAID ENGINE, MEANS SUPPORTING SAID PRIMARY NOZZLE SECTION AND ACTUATING MEANS FOR MOVING SAID PRI-MARY NOZZLE SECTION TO VARY THE FORM THEREOF AND THE AREA OF DISCHARGE THEREFORM, SAID ACTUATING MEANS INCLUDING AN ACTUATING MEMBER CONNECTED TO SAID PRIMARY NOZZLE SECOND, A SECONDARY NOZZLE SECTION CIRCUMFERENTIAL SPACED ABOUT SAID PRIMARY NOZZLE SECTION, AN PRIMARY AND SECONDARY NOZZLE SECTIONS FORMING A CIRCUMFERENTIAL EJECTOR PASSAGE THEREBETWEEN, DUCT MEANS CONNECTED TO SAID EJECTOR PASSAGE TO SUPPLY SECONDARY FLUID AT SUBSONIC VELOCITY THERETO, ADJUSTABLE THROTTLE MEANS IN SAID DUCT MEANS UPSTRAM OF SAID EJECTOR PASSAGE FOR TROTTLING THE FLOW OF SECONDARY FLUID, AND MEANS DIRECTING THE INTIRE FLOW OF SECONDARY FLUID THROUGH SAID ADUSTABLE TROTTLING MEANS, SAID ADJUSTABLE THROTTLING MEANS COMPRISING AT LEAST ON TROTTLING DUCT HAVING VARYING CROSS SECTION ALONG ITS LENGTH AND A MOVABLE THROTTLE BODY MOUNTED THEREIN TO VARY THE FLOW AREA DEFINED BETWEEN SAID THROTTING DUCT AND SAID THROTTLE BODY IN ACCORDANCE WITH THE POSITION OF SAID THROTTLE BODY, SAID MOVABLE THROTTLE BODY FIXED TO SAID ACTUATING MEMBER FOR MOVEMENT THEREWITH, WHEREBY THE AMOUNT OF THROTTLING OF THE SECONDARY FLUID IS CONTROLLED IN ACCORDANCE WITH THE POSITION OF SAID ACTUATING MEMBER AND SAID PRIMARY NOZZLE.