A thermal management system for thermal management of an external electric-power-generating nacelle of an electrically powered airship, the nacelle comprising at least one turbogenerator disposed within a fire containment vessel, the thermal management system comprising:
- an air inlet duct configured to feed air to a turbine of the at least one turbogenerator;
- a flue gas exhaust duct configured to discharge flue gases coming from the turbine;
- a ventilation air inlet duct configured to feed external air into the fire containment vessel;
- and
- an outlet duct configured to discharge ventilation air from the fire containment vessel, the outlet duct surrounding the flue gas exhaust duct.