Combined-propulsion system and method for high-speed land vehicles, in a forced vacuum

A combined propulsion system for high-speed vehicles, in a forced vacuum, comprising:

• a closed tubular guiding structure;
• a vehicle configured to move inside the tubular structure;
• at least one vacuum pump coupled to the closed tubular structure configured to provide a low-pressure atmosphere inside the structure, wherein the low pressure provided by the at least one vacuum pump, is in a range between 65 mbar and 250 mbar;
• electric propulsion means of the linear motor type arranged in an initial section of the structure, with a length relative to the tubular structure comprised between 15% and 1%, configured to provide an initial acceleration to the vehicle up to a first predetermined speed;
• and
• compressed-air propulsion means arranged on the vehicle, configured to provide an additional acceleration to the vehicle up to a second predetermined speed and, once the second predetermined speed is reached, maintain the second predetermined speed constant,
• wherein the compressed-air propulsion means are further configured to provide a regulation propulsion to the vehicle that takes the vehicle from the second predetermined speed to a third speed, and
• wherein the third speed represents a set of speed values defined in a predetermined speed map for the route that the vehicle will use as a reference.