Abstract: A device for a hybrid aircraft including a turboshaft engine having a gas generator, a free turbine, and a main rotor. The device includes a first reversible electric machine coupled to a shaft of the free turbine by way of a first free wheel, and to the main rotor. The device further includes a second reversible electric machine coupled to a shaft of the gas generator by way of a second free wheel, and coupled to the main rotor by way of a third free wheel. The second free wheel activates when the second electric machine rotates in a first direction of rotation, and the third free wheel activates when the second electric machine rotates in a second direction of rotation opposite to the first direction of rotation.

Abstract: A part for a centrifugal breather for an air/oil mixture of a turbomachine is configured to rotate about a longitudinal axis of symmetry. The breather forms an annular chamber for centrifugal separation of said mixture. The chamber includes mesh structure that takes up at least one space in a duct which closes communication between an axial inlet and an internal radial outlet. The mesh structure is formed by the spatial repetition of the material or of the space of a single pattern produced by the interconnection of simple shapes. The pattern is designed such that the spaces between the materials paths passing through the materials in at least three dimensions of space forming a trihedron.

Abstract: A component for a centrifugal degasser for an air/oil mixture of a turbomachine is disclosed. The degasser rotates about an axis of symmetry, forming an annular chamber for centrifugal separation of the mixture. The chamber forms a fluid passage duct, one inlet of which is oriented axially for supplying the chamber with the mixture, and a first outlet of which is oriented radially inwards for discharging the deoiled air separated from the mixture. The chamber also includes at least one second oil outlet oriented radially outwards and intended to discharge the oil separated from the mixture to the outside of the degasser. The chamber has longitudinal walls passing radially therethrough, at least one of the surfaces of the longitudinal walls having surface structures and/or corrugations arranged to form obstacles to a flow of the mixture along the surface of the longitudinal walls.

Abstract: A feeder (12) for feeding envelopes in a mail handling machine comprising a transport deck (30) for receiving a stack of envelopes, feed rollers (34) for conveying downstream envelopes towards a reference wall (32) leaving a clearance path for the envelopes; a stack sensor (48) for detecting the presence of the stack of envelopes at a predetermined height threshold; and a control unit (46) configured for decreasing acceleration of the feed rollers when the stack of envelopes goes below the predetermined height threshold.

Abstract: A feeder (12) for feeding envelopes in a mail handling machine comprising a transport deck (30) for receiving a stack of envelopes, feed rollers (34) for conveying downstream envelopes towards a reference wall (32) leaving a clearance path for the envelopes; a stack sensor (48) for detecting the presence of the stack of envelopes at a predetermined height threshold; and a control unit (46) configured for decreasing acceleration of the feed rollers when the stack of envelopes goes below the predetermined height threshold.