Gate valves and airlocks for a transportation system

1. A system comprising:

at least one tube forming a portion of a transportation path, wherein the tube is maintained as a low-pressure environment;

a propulsion system configured to propel at least one capsule through the tube;

a levitation system configured to levitate the capsule within the tube; and

at least one tube sealer arranged along the at least one tube and configured to selectively create an airlock in the at least one tube,

wherein the at least one tube sealer comprises a gate valve having a gate that is moveable into the transportation path to create the airlock in the at least one tube, and

wherein the gate valve comprises at least one flange configured for attachment to the at least one tubs.

2. The system of claim 1 , wherein the gate valve additionally comprises a gate housing configured to accommodate the gate.

3. The system of claim 2 , wherein the gate housing includes reinforcement structures to increase a strength and/or stiffness of the gate housing.

4. The system of claim 1 , wherein the gate valve additionally comprises at least one gate actuator configured to selectively move the gate at least one of into and out of the transportation path.

5. The system of claim 1 , wherein the gate valve additionally comprises at least one gate guide within which the gate in operable to move into the transportation path to create the airlock in the at least one tube.

6. The system of claim 1 , wherein the gate valve is linearly actuated into an operative position to create the airlock in the at least one tube.

7. The high-speed transportation system of claim 6 , wherein the gate valve is linearly actuated in one direction into an operative position to create the airlock in the at least one tube.

8. The system of claim 1 , wherein the gate valve is rotationally actuated into an operative position to create the airlock in the at least one tube.

9. The high-speed transportation system of claim 1 , wherein the gate valve comprises an iris-type aperture.

10. A system comprising:

at least one tube forming a portion of a transportation path, wherein the tube is maintained as a low-pressure environment;

a propulsion system configured to propel at least one capsule through the tube;

a levitation system configured to levitate the capsule within the tube; and

at least one tube sealer arranged along the at least one tube and configured to selectively create an airlock in the at least one tube,

wherein the at least one tube sealer comprises a gate valve having a gate that is moveable into the transportation path to create the airlock in the at least one tube,

wherein the gate valve additionally comprises at least one gate actuator configured to selectively move the gate at least one of into and out of the transportation path, and

wherein at least one gate actuator comprises at least two gate actuators, wherein one gate actuator is configured to move the gate in a direction perpendicular to a direction of the transportation path, and wherein a second gate actuator is configured to move the gate in a direction parallel to the direction of the transportation path.

11. A system comprising:

at least one tube forming a portion of a transportation path, wherein the tube is maintained as a low-pressure environment;

a propulsion system configured to propel at least one capsule through the tube;

a levitation system configured to levitate the capsule within the tube; and

at least one tube sealer arranged along the at least one tube and configured to selectively create an airlock in the at least one tube,

wherein the at least one tube sealer comprises a gate valve having a gate that is moveable into the transportation path to create the airlock in the at least one tube, and

wherein the gate valve comprises a wedge-shaped gate.

12. A system comprising:

at least one tube forming a portion of a transportation path, wherein the tube is maintained as a low-pressure environment;

a propulsion system configured to propel at least one capsule through the tube;

a levitation system configured to levitate the capsule within the tube; and

at least one tube sealer arranged along the at least one tube and configured to selectively create an airlock in the at least one tube,

wherein the at least one tube sealer comprises a gate valve having a gate that is moveable into the transportation path to create the airlock in the at least one tub, and

wherein the gate includes a track-gap support surface that is structured and arranged to reduce a size of a gap in the transportation path when the gate is maintained in a gate storage area.

13. A system comprising:

at least one tube forming a portion of a transportation path, wherein the tube is maintained as a low-pressure environment;

a propulsion system configured to propel at least one capsule through the tube;

a levitation system configured to levitate the capsule within the tube; and

at least one tube sealer arranged along the at least one tube and configured to selectively create an airlock in the at least one tube,

wherein the at least one tube sealer comprises a gate valve having a gate that is moveable into the transportation path to create the airlock in the at least one tube, and

wherein the gate valve includes a bridging element that is structured and arranged to reduce a size of a gap formed between adjacent tubes.

14. The system of claim 13 , further comprising an actuator configured for moving the bridging element from a recessed position to a position within the gap.

15. A system comprising:

at least one tube forming a portion of a transportation path, wherein the tube is maintained as a low-pressure environment;

a propulsion system configured to propel at least one capsule through the tube;

a levitation system configured to levitate the capsule within the tube; and

at least one tube sealer arranged along the at least one tube and configured to selectively create an airlock in the at least one tube,

wherein the at least one tube sealer comprises a hyperbolic paraboloid-shaped sealing element that is positionable in the transportation path to create the airlock in the at least one tube.

16. A system comprising:

at least one tube forming a portion of a transportation path, wherein the tube is maintained a low-pressure environment;

a propulsion system configured to propel at least one capsule through the tube;

a levitation system configured to levitate the capsule within the tube; and

at least one tube sealer arranged along the at least one tube and configured to selectively create an airlock in the at least one tube,

wherein the at least one tube sealer comprises an airbag that is inflatable in the transportation path to create the airlock in the at least one tube, and

wherein the airbag is a capsule-based airbag comprising an airbag arranged on each longitudinal end of a capsule traversing the at least one tube.

17. The system of claim 16 , wherein the airbag comprises at least one sealing aid.

18. A system comprising:

at least one tube forming a portion of a transportation path, wherein the tube is maintained as a low-pressure environment;

a propulsion system configured to propel at least one capsule through the tube;

a levitation system configured to levitate the capsule within the tube; and

at least one tube sealer arranged along the at least one tube and configured to selectively create an airlock in the at least one tube,

wherein the at least one tube sealer comprises a gate valve having a gate that is moveable into the transportation path to create the airlock in the at least one tub,

wherein the gate valve is linearly actuated into an operative position to create the airlock in the at least one tube, and

wherein the gate valve is linearly actuated in two discrete directions into an operative position to create the airlock in the at least one tube.