The present disclosure relates to a method and a combined-propulsion system for high-speed vehicles, which includes a closed tubular guiding structure and a vehicle designed to move through the inside of the tubular structure. The system includes a vacuum system coupled to the tubular structure to provide a safe atmosphere at low pressure, always above the Armstrong limit; electric propulsion means arranged in an initial section of the structure, to accelerate the vehicle to a determined cruising speed; and compressed-air propulsion means arranged on the vehicle, to maintain the cruising speed.

The present disclosure relates to a method and a combined-propulsion system for high-speed vehicles, which includes a closed tubular guiding structure and a vehicle designed to move through the inside of the tubular structure. The system includes a vacuum system coupled to the tubular structure to provide a safe atmosphere at low pressure, always above the Armstrong limit; electric propulsion means arranged in an initial section of the structure, to accelerate the vehicle to a determined cruising speed; and compressed-air propulsion means arranged on the vehicle, to maintain the cruising speed.

A guide tube according to an embodiment of the present invention may comprise: a tube main body member; a rib member arranged in the longitudinal direction of the tube main body member and coupled to the inner surface of the tube main body member; and a rail support member connected to the rib member.

A guide tube according to an embodiment of the present invention may comprise: a tube main body member; a rib member arranged in the longitudinal direction of the tube main body member and coupled to the inner surface of the tube main body member; and a rail support member connected to the rib member.

The present invention relates to a spiral tube capable of improving resistance performance against a collapse load generated by the difference between an internal pressure and an external pressure, while having a reduced thickness, the spiral tube comprising: a tube body in which a strip is connected in a spiral shape and welded at the front end thereof; and a stiffener provided on the inner surface of the tube body.

A system for transporting one or more items is provided. The system includes: a transportation tube disposed at least partially underground or at least partially above ground; a transportation pod to secure items therein for transport; a transportation actuator to propel the transportation pod through the transportation tube, the transportation actuator including a track extending through the transportation tube and a cable disposed at least partially inside the track, the cable configured to be coupled to the transportation pod as the transportation pod is propelled along the track; a first access point located proximate a first end of the transportation tube; and a second access point located proximate a second end of the transportation tube. Each of the first and second access points includes an opening configured to allow the transportation pod to be received into or removed from the transportation tube.

A low-pressure tubular system, for instance a vacuum tube train transportation system, comprising: a multitude of interconnected tube sections having a longitudinal axis; wherein each of the tube sections comprise a central part and two outer end parts; wherein the tubular system is configured to maintain a low-pressure environment within the connected tube sections; wherein the system further comprises a multitude of expansion joints connecting the tube sections; wherein each of the expansion joints comprises a sleeve made of a flexible sheet material and comprising a ring shaped endless central part and two ring shaped endless outer end parts; and wherein each of the outer end parts of the expansion joints are arranged to extend coaxial with an adjacent tube section and surround and sealingly engage the outer end part of said adjacent tube section.

The present disclosure provides a sealing apparatus for use in a hypertube, which includes a first tube, a second tube having one end connected to an end of the first tube, and a gasket including a seal made of a fiber structure formed with a space that is filled with a sealing fluid, wherein the gasket is configured to seal a space between the first tube and the second tube.

The present disclosure provides a sealing apparatus for use in a hypertube, which includes a first tube, a second tube having one end connected to an end of the first tube, and a gasket including a seal made of a fiber structure formed with a space that is filled with a sealing fluid, wherein the gasket is configured to seal a space between the first tube and the second tube.

The present disclosure provides a hypertube system for detecting a position of a hypertube vehicle, including a hypertube vehicle, a tube configured to surround a travel path of the hypertube vehicle, At least one LiDAR sensor each mounted on an inner wall of the tube and including a laser transmitter configured to irradiate a laser beam toward the hypertube vehicle and a laser receiver configured to detect a laser, and a reflector configured to reflect the laser irradiated from the LiDAR sensor, wherein the reflector may be disposed in the hypertube vehicle, and wherein the laser beam reflected from the reflector reaches the laser receiver of the LiDAR sensor to be used in detecting the position of the hypertube vehicle.