Aircraft propulsion assembly having a ventilation system and a fire-fighting system

A propulsion assembly for an aircraft, said propulsion assembly having:

• a primary duct and a secondary duct,
• an outer fairing having an external annular wall and an internal annular wall that delimit between them an outer compartment, wherein the external annular wall has an inlet opening,
• an inner fairing having an external annular wall and an internal annular wall that delimit between them an inner compartment, wherein the external annular wall has at least one air exhaust aperture,
• wherein the secondary duct is delimited between the internal annular wall of the outer fairing and the external annular wall of the inner fairing,
• wherein the primary duct is delimited inside the internal annular wall of the inner fairing,
• a suction system having an inlet, an outlet and mobile elements that are configured to draw air in via the inlet and deliver drawn-in air via the outlet,
• a drive means configured to drive the mobile elements,
• a transfer pipe fluidically connected to the outlet of the suction system,
• a distribution pipe disposed in the inner compartment, fluidically connected to the transfer pipe and having a plurality of nozzles,
• a supply pipe, of which one end opens into the outer compartment, and of which another end is fluidically connected to the inlet of the suction system,
• a regulating means configured and arranged to regulate a flow rate of air in the suction system, and
• a fire-fighting system having a reservoir containing an extinguishing fluid, a discharge pipe, of which a first end is fluidically connected to the reservoir, and a control system interposed between the reservoir and the discharge pipe that alternately adopts a closed position preventing the extinguishing fluid from flowing into the discharge pipe or an open position allowing the extinguishing fluid to flow into the discharge pipe, and
• wherein a second end of the discharge pipe opens directly into the transfer pipe so as to supply the discharge pipe, when the control system is in the open position.