Stiffening of the connection between flaps in a nozzle of variable cross section

A variable section nozzle comprising:

• an ejection casing and a plurality of internal flaps arranged in a ring downstream from the ejection casing, each internal flap being connected to the ejection casing by a movable lever pivotally mounted to a downstream end of the ejection casing, each lever being movable between a first position in which the internal flaps are in a high position and a second position in which the internal flaps are in a folded-down position;
• and
• a plurality of rigid movement transmission parts distributed circumferentially around the ejection casing, each rigid movement transmission part being connected respectively to two adjacent levers by first and second connecting rods, each rigid movement transmission part also being connected to a control actuator, each rigid movement transmission part being suitable for moving in a direction corresponding to an axial direction of the nozzle under action of the control actuator to which the rigid movement transmission part is connected in such a manner as to move the adjacent levers between the first and second positions,
• wherein each rigid movement transmission part is connected to a guide carriage slidably mounted in a respective slideway, each slideway being fastened on the ejection casing upstream from the levers in a direction corresponding to the axial direction of the nozzle, each slideway being in axial alignment with the control actuator, or wherein each rigid movement transmission part is connected to two guide carriages each slidably mounted in a respective slideway, each slideway being fastened on the ejection casing upstream from each lever in a direction corresponding to the axial direction of the nozzle, the slideways being offset in the circumferential direction relative to each control actuator, and
• wherein a mounting position of the lever to the election casino is further downstream than a pivotal connection position between the lever and an end of the connecting rod.