Vactrain

A vactrain (short for vacuum tube train) is a type of high-speed transport system where vehicles travel through partially evacuated tubes or tunnels. By operating in a partial vacuum, air resistance is drastically reduced, allowing for higher speeds than conventional ground transportation, theoretically up to 4,000 km/h (2,500 mph).

Vactrains have been proposed from 1906, and developed as scale models since 1917..

Most vactrain concepts use maglev technology to lift and propel the vehicle.


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