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‘Hyperloop’ would link LA-SF in 30 mins, if built

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Posted August 13, 2013

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Imagine strapping into a car-sized capsule and hurtling through a tube at more than 700 mph (1,126 kph)—not for the thrill of it, but to get where you need to go.

On Monday, billionaire entrepreneur Elon Musk unveiled a transportation concept that he said could whisk passengers the nearly 400 miles (643 kilometers) between Los Angeles and San Francisco in 30 minutes—half the time it takes an airplane.

If it’s ever built.

His “Hyperloop” system for travel between major cities is akin to the pneumatic tubes that transport capsules stuffed with paperwork in older buildings.

An image released by Tesla Motors, is a sketch of the Hyperloop capsule with passengers onboard. . Billionaire entrepreneur Elon Musk on Monday, Aug. 12, 2013 unveiled a concept for a transport system he says would make the nearly 400-mile trip in half the time it takes an airplane. The "Hyperloop" system would use a large tube with capsules inside that would float on air, traveling at over 700 miles per hour. (AP Photo/Tesla Motors)

An image released by Tesla Motors, is a sketch of the Hyperloop capsule with passengers onboard. . Billionaire entrepreneur Elon Musk on Monday, Aug. 12, 2013 unveiled a concept for a transport system he says would make the nearly 400-mile trip in half the time it takes an airplane. The “Hyperloop” system would use a large tube with capsules inside that would float on air, traveling at over 700 miles per hour. (AP Photo/Tesla Motors)

In this case, the cargo would be people, reclining for a ride that would start with a force of acceleration like an airplane but then be turbulence free.

Capsules would catapult through a large, nearly air-free tube. Inside, they would be pulled down the line by magnetic attraction.

Each capsule would float on a cushion of air it creates—like an air hockey table in which the puck produces the air instead of the surface. To minimize friction, a powerful fan at the front would suck what air is in the tube to the rear.

“Short of figuring out real teleportation, which would of course be awesome (someone please do this), the only option for super fast travel is to build a tube over or under the ground that contains a special environment,” Musk wrote in his proposal, posted online.

Capsules could depart every 30 seconds, carrying 28 people, with a projected cost of about $20 each way, according to Musk’s plan, which was posted online at https://www.spacex.com/hyperloop. The proposed route would follow Interstate 5—a well-traveled path linking California’s north and south through the agriculture-rich Central Valley.

An image released by Tesla Motors, is a sketch of the Hyperloop capsule with passengers onboard. . Billionaire entrepreneur Elon Musk on Monday, Aug. 12, 2013 unveiled a concept for a transport system he says would make the nearly 400-mile trip in half the time it takes an airplane. The "Hyperloop" system would use a large tube with capsules inside that would float on air, traveling at over 700 miles per hour. (AP Photo/Tesla Motors)

An image released by Tesla Motors, is a sketch of the Hyperloop capsule with passengers onboard. . Billionaire entrepreneur Elon Musk on Monday, Aug. 12, 2013 unveiled a concept for a transport system he says would make the nearly 400-mile trip in half the time it takes an airplane. The “Hyperloop” system would use a large tube with capsules inside that would float on air, traveling at over 700 miles per hour. (AP Photo/Tesla Motors)

On a conference call Monday, Musk said that if all goes right, it could take seven to 10 years for the first passengers to make the journey between California’s two biggest metro areas. He put the price tag at around $6 billion—pointedly mentioning that’s about one-tenth the projected cost of a high-speed rail system that California has been planning to build.

Indeed, the Hyperloop was inspired by that rail system, which has a cost too high and speed too low to justify the project, Musk said.

In a written statement, California High-Speed Rail Authority Chairman Dan Richard suggested that Musk was oversimplifying the challenges.

Read more at: Phys.org

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