Abstract: A convergent-divergent nozzle with an exit area control mechanism includes convergent and divergent petals extending from a nozzle structure on which a synchronising ring is allowed to rotate and to move in a radial direction. Angled lever arms pivot on the nozzle structure and extend from the synchronising ring to compression struts that connect with the divergent petals so that, when the synchronising ring rotates around the nozzle structure, the rotation is converted by the angled lever arms into a predominantly axial displacement of the compression struts, resulting in opening or closure of the divergent petals.

Abstract: Guiding mechanism for variable geometry vectoring nozzles, applicable to gas turbines, capable of transmitting tangential forces acting on the external ring under vectoring loads onto the inner ring, avoiding the need of a joint between the outer ring and the nozzle structure. With this purpose a guiding track (9) oriented circunferentially around the pivoting axis (8) is incorporated onto the outer ring (3) and a track (10) oriented around a second axis (6) perpendicular to the previous is incorporated on the intermediate ring (2). The sledge element (11) joint to the intermediate ring (2), slides along the track (9) as a result of vectoring around the axis (8). For vectoring around axis (6) the sledge element (12), joint to the inner ring (1) slides over the track (10).