Exhaust pipe for turboreactor with variable geometry

Details Exhaust pipe for turboreactor with variable geometry Exhaust pipe for turboreactor with variable geometry

F - Mech Eng,Light,Heat,Weapons

02

K

F02K 1/12 (2006.01)

Patent

CA 2207836

The invention relates to a variable geometry turbojet exhaust pipe including three sets of axisymmetric flaps (6, 8, 10) controlled by a single actuating ring (12), actuated by hydraulic cylinder (14). The operable upper flaps (8) are linked to the actuating ring (12) by levers (17), on which the hydraulic cylinders (14) are pivoted. The actuating ring (12) is also linked to the operable lower flaps (10) by means of servo-controlled levers (20) on which the drive rods (24) for the operable exterior crown flaps (6) are articulated, these flaps (6) being articulated on the fixed end portion of the turbojet engine.

L'invention concerne une tuyère d'éjection de turboréacteur, à géométrie variable, comprenant trois jeux de volets (6,8,10) axisymétriques, commandés par un seul anneau de commande (12) actionné par des vérins (14). Les volets commandés amont (8) sont reliés à l'anneau de commande (12) par des leviers translatables (14) sur lesquels sont articulés les vérins (14). L'anneau de commande (12) est en outre relié aux volets commandés aval (10) par des leviers d'asservissement (20) sur lesquels sont articulés les biellettes(24) d'entraînement des volets commandés (6) de la couronne extérieure, ces derniers volets (6) étant articulés sur la partie terminale fixe du turboréacteur.

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