Abstract: An aircraft propulsion engine including a fan case, and a cowl forming part of the nacelle of the engine and being designed to at least partially surround the case leaving a space between the cowl and the case, in which space at least one piece of equipment is mounted and extends along the axis of the engine, is provided. The cowl includes a wall and wall stiffeners fixed to the internal face of the wall. At least a part of the stiffeners of the cowl is arranged to form air guide ducts, the air guide ducts being assembled into an air distribution circuit to ventilate the equipment.

Abstract: The invention relates to an aircraft propulsion engine (1) comprising a case, notably a fan case (18), a cowl (20) forming part of the nacelle of the engine (1), the cowl (20) being designed to at least partially surround said case leaving a space (22) between the cowl and the case (18), in which space (22) at least one piece of equipment (24) is mounted and extends along the axis (10) of said engine (1), the cowl comprising a wall and wall stiffeners fixed to the internal face (34) of this wall, wherein at least a part of the stiffeners of the cowl is arranged to form air guide ducts, said air guide ducts being assembled into an air distribution circuit to ventilate said equipment.

Abstract: A rotor disc includes a rim and a balancing device, which includes housings formed in the rim, and balancing masses housed in at least some of the housings.

Abstract: The device for rotationally blocking a retaining ring (20) on a rotor disk (10) comprises: successive first (162, 262) and second (164, 264) blocking hooks of the disk (10), at least one cleat (302, 304, 306) of said retaining ring (20), arranged close to a split (24) in the ring (20). The position of said at least one cleat (302, 304, 306) on said retaining ring (20) is such that, when said retaining ring (20) is in place in a groove (22) situated in the rotor disk (10), said at least one cleat (302, 304, 306) is in abutment against said first blocking hook (162, 262), and the split (24) is covered by said second blocking hook (164, 264).

Abstract: The balancing device is applicable to a rotor (10) disk (14) provided with a rim (18). It comprises housings (36, 38) formed in the rim (18), balancing masses (40, 30) housed in the housings (36, 38), the housings (36, 38) being closed off by a spring retaining ring (44, 442, 444). Application to a rotor (10) with integrally bladed disks (14).