A machine , such as an aircraft, provided with a powertrain, the powertrain comprising: - a bladed propulsion system , - a thermal drive system , comprising a first thermal engine and a second thermal engine , configured to make it possible to drive the bladed propulsion system , - an electric drive system configured to make it possible to drive the bladed propulsion system , - an electric power supply system comprising a battery making it possible to supply the electric drive system with power, - a clutch system configured to make it possible to engage any one or each of the thermal engines to drive the bladed propulsion system , the clutch system also being configured to make it possible to disengage any one or each of the thermal engines with respect to the bladed propulsion system , the electric drive system being arranged in series with the thermal drive system , between the thermal drive system and the bladed propulsion system , characterized in that said machine comprises a control unit for controlling the clutch system of the thermal drive system and the power supply system of the electric drive system , the control unit being configured to make it possible to disengage one of the two thermal engines , in the case of a fault of said thermal engine , the other thermal engine remaining engaged, and to control the electric power supply system in order to supply the electric drive system with power to drive the bladed propulsion system by means of one of the two thermal engines and the electric drive system , and in that said the control unit is configured to make it possible to disengage the two thermal engines and to control the electric power supply system to supply the electric drive system with power in order to drive the bladed propulsion system by means of only the electric drive system . - a bladed propulsion system , - a thermal drive system , comprising a first thermal engine and a second thermal engine , configured to make it possible to drive the bladed propulsion system , - an electric drive system configured to make it possible to drive the bladed propulsion system , - an electric power supply system comprising a battery making it possible to supply the electric drive system with power, - a clutch system configured to make it possible to engage any one or each of the thermal engines to drive the bladed propulsion system , the clutch system also being configured to make it possible to disengage any one or each of the thermal engines with respect to the bladed propulsion system , the electric drive system being arranged in series with the thermal drive system , between the thermal drive system and the bladed propulsion system , characterized in that said machine comprises a control unit for controlling the clutch system of the thermal drive system and the power supply system of the electric drive system , the control unit being configured to make it possible to disengage one of the two thermal engines , in the case of a fault of said thermal engine , the other thermal engine remaining engaged, and to control the electric power supply system in order to supply the electric drive system with power to drive the bladed propulsion system by means of one of the two thermal engines and the electric drive system , and in that said the control unit is configured to make it possible to disengage the two thermal engines and to control the electric power supply system to supply the electric drive system with power in order to drive the bladed propulsion system by means of only the electric drive system . <EOS>