RIGIDIFICATION OF THE CONNECTION BETWEEN SHUTTERS IN A VARIABLE SECTION TUBE

摘要

A variable section nozzle (100) includes an ejection housing (101) and a plurality of inner flaps (110) disposed in a ring downstream of the ejection housing. Each inner liner is connected to the ejection housing by a movable lever (210; 220) pivotally mounted to the downstream end (101a) of the ejection housing (101). Each lever is movable between a first position in which the inner flaps (110) are in the up position and a second position in which the inner flaps are in the steered position. The nozzle further includes a plurality of rigid motion transmission pieces (230) circumferentially distributed around the ejection housing (101). Each rigid motion transmission part (230) is connected to two adjacent levers (210, 220) by connecting rods (240, 241). Each rigid piece of motion transmission is further connected to a control cylinder (250). Each rigid motion transmission part (230) can move in a direction (D230) corresponding to the axial direction (XX ') of the nozzle (100) under the action of the control cylinder (250) to which it is connected. moving the adjacent levers between the first and second positions.