Abstract: An air diffuser configured to be installed in a cooling rotating interface of a propulsion oriented device, the propulsion oriented device being pivotable relative to a vessel around an axis of rotation, the air diffuser capable of being attached to the propulsion oriented device. The air diffuser includes a main portion capable of being surrounded by an air box attached to the vessel so as to delimit, inside a volume delimited by the air box, a first fluid path for a cold fluid flow and a second fluid path for a warm fluid flow from each other. The main portion is a solid of revolution around the axis of rotation.

Abstract: The device for parallel connection of a plurality of electrical feeder units comprises a power output socket, and for each feeder unit: a connector equipped with a power input plug, and at least one power conductor between said plug and the output socket. The connector comprises detection means designed to detect connection of said connector to the feeder unit. A controlled switch equipped with a control input is connected in series on the at least one power conductor, said control input being coupled to the detection means, detection of connection of the connector to the feeder unit enabling closing of said switch.