Propulsion unit for an aircraft

A propulsion unit for an aircraft, this propulsion unit comprising:

• a turbomachine extending along a main axis and comprising a fluidic system,
• a cowling that extends along and around said main axis, the cowling comprising at least one panel that extends around said main axis, said at least one panel comprising a longitudinal edge that is hinged by hinges that define a pivot axis for the at least one panel, from a closed position wherein the at least one panel extends around the turbomachine to an open position wherein the at least one panel is spaced apart from the turbomachine, said at least one panel carrying at least one surface heat exchanger which comprises a fluidic circuit connected to said fluidic system,
• wherein the fluidic circuit is connected to the fluidic system by at least one telescopic link which comprises at least one tubular rod movable in translation in a tubular body along an axis of elongation of the at least one telescopic link, the at least one telescopic link having a length which varies as a function of the position of the at least one panel about said pivot axis, the at least one tubular rod comprising a first internal passage in fluidic communication with a second internal passage of the tubular body at least when the at least one panel is in the closed position.