Abstract: In order to reduce the weight of a hybrid propulsion system for a multi-rotor rotary-wing aircraft, the system comprises at least one inverter configured to supply power in parallel to multiple electric motors intended to drive the corresponding propellers of the system.

Abstract: The invention relates to a method for producing a shielding cartridge (1) of a turbomachine element (10), said method comprising a step of winding a carbon wire (3) comprising a plurality of fibres about a longitudinal axis and a step of trapping and preserving the outside surroundings of the wound-up wire (3) in a housing (2).

Abstract: A bladed rotor comprising a rotor disk (12) presenting two front faces (14, 15) and an outer peripheral face (16), sockets (18) being provided in the outer peripheral face (16) and opening out into at least one of the front faces (14, 15). The rotor (10) comprising blades (30), each having a root (32) whereby the blade is fastened in a socket (18), an end face (31) of the root being substantially level with the front face (14) of the disk when the blade is fastened in the socket. A coating layer (40) is deposited on the disk (12) so as to cover both at least a portion of the front face (14) of the disk and at least a portion of the end face (31) of the root (32).

Abstract: In order to reduce the weight of a hybrid propulsion system for a multi-rotor rotary-wing aircraft, the system comprises at least one inverter configured to supply power in parallel to multiple electric motors intended to drive the corresponding propellers of the system.

Abstract: The invention relates to a method for producing a shielding cartridge (1) of a turbomachine element (10), said method comprising a step of winding a carbon wire (3) comprising a plurality of fibres about a longitudinal axis and a step of trapping and preserving the outside surroundings of the wound-up wire (3) in a housing (2).

Abstract: The invention relates to the field of inspecting mechanical parts, and in particular to an endoscope (1) suitable for being used for frequency inspection of a part that is difficult to access, and also to a method of using the endoscope (1), which endoscope comprises an endoscopic head (2), an image display device (3) for displaying images picked up via said endoscopic head (2), and an elongate member (4) connecting the endoscopic head (2) to the display device (3), and in which the endoscopic head (2) also includes a frequency inspection device (7) comprising at least one vibration sensor (10) for picking up a vibratory response of a subject for frequency inspection.

Abstract: A bladed rotor comprising a rotor disk (12) presenting two front faces (14, 15) and an outer peripheral face (16), sockets (18) being provided in the outer peripheral face (16) and opening out into at least one of the front faces (14, 15). The rotor (10) comprising blades (30), each having a root (32) whereby the blade is fastened in a socket (18), an end face (31) of the root being substantially level with the front face (14) of the disk when the blade is fastened in the socket. A coating layer (40) is deposited on the disk (12) so as to cover both at least a portion of the front face (14) of the disk and at least a portion of the end face (31) of the root (32).