Exit area control mechanism for convergent divergent nozzles

摘要

The invention consists of a nozzle structure (2), on which a synchronising ring (1) is allowed to rotate and to move in the axial direction. Angled lever arms (3) with pivoting capability (4) on the nozzle structure (2), are connected on one side to the synchronising ring (1) and on the other to compression struts (8), joined to the divergent petals (10). The rotation of the synchronising ring (1) around the nozzle structure (2) is converted by the angled lever arms (3) in a predominant axial displacement of one side of the compression struts (8), resulting in the opening or closure of the divergent petals (10).