Patent ID: 8800262

Claim:
A thrust reverser for a turbofan engine nacelle comprising: a stationary portion downstream from which is mounted at least one mobile cowl movable between a direct-jet position, in which the mobile cowl is aligned with the stationary portion, and a thrust-reversal position, in which the mobile cowl is spaced apart from the stationary portion so as to define an opening for a passage of a secondary flow; a means for deflecting the secondary flow through the opening; an actuator means; a means for guiding the mobile cowl relative to the stationary portion; at least a first and a second adjacent cascade vane, positioned at an angle relative to a movement axis of the mobile cowl, arranged opposite the opening such that the deflected secondary flow at least partially passes through the first and second adjacent cascade vanes in order to increase a deflection of said secondary flow in an upstream direction; and an outer wall and an inner wall to define a peripheral wall of an annular channel in which the secondary flow flows, the first and second adjacent cascade vanes diverging outwardly, from upstream to downstream, an additional vane forming an angle with said first and second adjacent cascade vanes, so as to form an outer recess relative thereto wherein said actuator means and means for guiding the mobile cowl are arranged between the first and second adjacent cascade vanes, and wherein a covering wall connects said first and second adjacent cascade vanes, bypassing said actuating means and guide means wherein the covering wall comprises the additional cascade vane, arranged to increase the deflection of said secondary flow in the upstream direction.