Abstract: A tilt ramp swept edge nozzle for vectoring exhaust gases from an engine mounted in an aircraft has a pair of flaps pivotally affixed to the aircraft in the area of the output end of the engine tailpipe. The flaps are in spaced relation to each other, aligned with the trailing edge of the airfoil of the aircraft and are movable to positions substantially parallel to each other and to positions substantially non-parallel to each other. An actuating system coupled to the flaps moves same relative to each other thereby to maintain a substantially constant effective throat area in the nozzle and providing an increasing nozzle aspect ratio and variable thrust direction during transition from forward to aft throat position of the nozzle.

Abstract: A readily assembled and disassembled coupling designed to sustain both axial and torsional loads. The coupling has two tubular elements that are held together by a locking ring inserted from outside the coupling after the connection is made. The end of the first tubular element fits into a section of enlarged diameter in the end of the second tubular element. The shoulder in the bore of the second at the transition point between the enlarged and normal diameter is formed into a helix. A matching helix is formed on the edge at the end of the first element. A peripheral annular groove is provided in the outer diameter of the first element and a similar groove is provided in the inside diameter of the second element. When the two elements are fitted together with their helices in contact to make the connection, the groove in the second element overlies the groove in the first element. A slot in the wall of the second element provides access to the grooves to permit the insertion of the locking ring.