An assembly for a turbomachine comprising: a compressor, an isochoric combustion chamber, said isochoric combustion chamber comprising: an intake valve, said intake valve being movable between: an open position, in which the intake valve authorizes the intake of a fluid coming from the compressor towards the isochoric combustion chamber, and a closed position, in which the intake valve prevents the intake of a fluid coming from the compressor towards the isochoric combustion chamber, and a discharge valve, said discharge valve being movable between: an open position, in which the discharge valve authorizes the discharge of a fluid coming from the isochoric combustion chamber, and a closed position, in which the discharge valve prevents the discharge of a fluid coming from the isochoric combustion chamber, an isobaric combustion chamber configured to receive a fluid discharged from the isochoric combustion chamber, and a turbine configured to receive a fluid coming from the isobaric combustion chamber. a compressor, an isochoric combustion chamber, said isochoric combustion chamber comprising: an intake valve, said intake valve being movable between: an open position, in which the intake valve authorizes the intake of a fluid coming from the compressor towards the isochoric combustion chamber, and a closed position, in which the intake valve prevents the intake of a fluid coming from the compressor towards the isochoric combustion chamber, and a discharge valve, said discharge valve being movable between: an open position, in which the discharge valve authorizes the discharge of a fluid coming from the isochoric combustion chamber, and a closed position, in which the discharge valve prevents the discharge of a fluid coming from the isochoric combustion chamber, an isobaric combustion chamber configured to receive a fluid discharged from the isochoric combustion chamber, and a turbine configured to receive a fluid coming from the isobaric combustion chamber. an open position, in which the intake valve authorizes the intake of a fluid coming from the compressor towards the isochoric combustion chamber, and a closed position, in which the intake valve prevents the intake of a fluid coming from the compressor towards the isochoric combustion chamber, and a discharge valve, said discharge valve being movable between: an open position, in which the discharge valve authorizes the discharge of a fluid coming from the isochoric combustion chamber, and a closed position, in which the discharge valve prevents the discharge of a fluid coming from the isochoric combustion chamber, an isobaric combustion chamber configured to receive a fluid discharged from the isochoric combustion chamber, and a turbine configured to receive a fluid coming from the isobaric combustion chamber. an open position, in which the discharge valve authorizes the discharge of a fluid coming from the isochoric combustion chamber, and a closed position, in which the discharge valve prevents the discharge of a fluid coming from the isochoric combustion chamber, an isobaric combustion chamber configured to receive a fluid discharged from the isochoric combustion chamber, and a turbine configured to receive a fluid coming from the isobaric combustion chamber.