Disk-shaft-free parallel composite engine

The invention discloses a disc-shaft-free parallel composite engine which comprises a disc-shaft-free full-reverse-rotation turbojet engine, and the full-reverse-rotation turbojet engine comprises a power supply control system, an air inlet channel, an electric drive compression component, a first combustion chamber, a turbine generator and an exhaust section, and the air inlet channel, the electric drive compression component, the first combustion chamber, the turbine generator and the exhaust section are sequentially arranged in the airflow direction. The power supply control system distributes collected energy generated by working of the turbine generator to each stage of rotor blade in the electrically-driven compression component to adjust the rotating speed of each stage of rotor blade; and the power supply control system provides a load to adjust the rotating speed of each stage of turbine rotor blade in combination with the fuel gas output by the first combustion chamber. A ramjet engine is arranged i