US 12,168,964 B2
Thrust reverser with cascades of mobile vanes, comprising a rear structure supporting the cascades of vanes and incorporating an acoustic function
Patrick Boileau, Moissy-Cramayel (FR); Julien Chandelier, Moissy-Cramayel (FR); Fabien Jourdan, Moissy-Cramayel (FR); and Philippe Wiertel, Moissy-Cramayel (FR)
Assigned to SAFRAN NACELLES, Gonfreville-l'Orcher (FR)
Appl. No. 18/560,510
Filed by SAFRAN NACELLES, Gonfreville-l'Orcher (FR)
PCT Filed May 13, 2022, PCT No. PCT/FR2022/050920
§ 371(c)(1), (2) Date Nov. 13, 2023,
PCT Pub. No. WO2022/243627, PCT Pub. Date Nov. 24, 2022.
Claims priority of application No. 2105116 (FR), filed on May 17, 2021.
Prior Publication US 2024/0254944 A1, Aug. 1, 2024
Int. Cl. F02K 1/72 (2006.01); F02K 1/82 (2006.01)
CPC F02K 1/72 (2013.01) [F02K 1/827 (2013.01)] 9 Claims
OG exemplary drawing
 
1. A thrust reverser for an aircraft propulsion unit, having a longitudinal central axis and comprising a fixed structure, at least one cowl and a plurality of diversion cascades, the cowl and the cascades forming a movable system able to move in translation with respect to the fixed structure along the longitudinal central axis, between an advanced direct-thrust position and a retracted thrust-reversal position, the movable system further comprising at least one rear cascade-support structure for supporting the cascades, wherein a rear end of at least several of the plurality of diversion cascades are secured on said at least one rear cascade-support structure, said at least one rear cascade-support structure extending in a circumferential direction of the thrust reverser,
wherein said at least one rear cascade-support structure incorporates an acoustic absorption device comprising a lattice of cells and a skin covering the cells, the skin including a first surface arranged facing the cells, and a second surface opposite to the first, radially delimiting towards the outside a part of a secondary gas-flow duct, in the advanced direct-thrust position of the movable system,
wherein the cowl is able to move in rotation about a pivot axis between a closed flight position and an open maintenance position, said at least one rear cascade-support structure comprising an axial connection member intended to cooperate with a complementary axial connection member provided on a front end of the cowl, when the latter is in the closed flight position.