Variable area throat exhaust nozzle with vectorable sideways shifting of exhaust flow

A nozzle (12) includes a sideways split and aftwardly swept nozzle ramp (18) extends between a fixed lower nozzle wall (16) and a pivotal upper nozzle wall (14) pivotally connected to an aft end (104) of the nozzle (12) and operable to vary a throat area (A8) of a throat (28) of the nozzle (12). The upper and lower nozzle walls (14 and 16) and the ramp (18) extend transversely between first and second nozzle sidewalls (20 and 22). A sideways pivotable ramp structure (24) pivotally connected to the lower nozzle wall (16) and pivotable between the sidewalls (20 and 22) includes a longitudinally extending upper pivotable wall (34) spaced upwardly and aftwardly of a longitudinally extending lower pivotable wall (36) and an aftwardly swept pivotable ramp (38) extending between the upper and lower pivotable walls (34 and 36). Right hand and left hand upper ramp sections (96 and 98) of the nozzle ramp (18) may be connected to right hand and left hand upper nozzle wall sections (100 and 102) respectively of the upper nozzle wall (14) which are pivotally connected to right and left handed triangular side walls (158 and 159) of the aft end (104).