THRUST REVERSER WITH RETRACTABLE CASCADE VANES

摘要

A thrust reverser for a turbojet engine nacelle includes a movable cowl, cascade vanes and a portion forming a movable variable nozzle. The cowl translates between a closing position and a maintenance position which is located beyond a thrust reversal position. In the maintenance position, the cowl opens a passage within the nacelle and allows access the inside of the nacelle. The variable nozzle is translated by an actuator between reduced ejection section and increased section positions. In particular, the cascade vanes move between retracted and active positions and are housed in an envelope formed by a fan casing and an outer cowl in the retracted position. In the active position, the cascade vanes are displaced downstream by an actuator through a passage open by the movable cowl in the nacelle. The actuator of the cascade vanes is dissociable from the actuator driving the variable nozzle.

主权项

1. A thrust reverser for a turbojet engine nacelle comprising:
at least one movable cowl translatable along a longitudinal direction of the nacelle between a closing position in which said movable cowl provides an aerodynamic continuity of the nacelle and inhibits diverting means, and a maintenance position, located beyond a thrust reversal position, in which said movable cowl opens a passage within the nacelle and allows accessing the inside of the nacelle, said movable cowl being further extended by at least one portion forming a movable variable nozzle associated with at least one means for driving in translation along the longitudinal direction of the nacelle between a reduced ejection section position and an increased section position; and diverting means movably mounted and translating in the longitudinal direction between a retracted position upstream of the movable cowl in which said diverting means are housed inside an envelope formed by a fan casing and an outer cowl of the nacelle, and an active position in which said diverting means are displaced downstream so as to extend through a passage open by the movable cowl in the nacelle, wherein said diverting means are associated with at least one driving means dissociable from the driving means of the movable variable nozzle.