Comment: Innovative Idea

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Innovative Idea

However, it won't work until Daryl stops being so stubborn.

Five years ago, some other engineers and I argued with him on Picken's Plan's site that he should get rid of his bicycle wheels to support his cars. (He had it running on 3 of them). Our point was that regardless of how large the wheel and how small the bearings, the bearing speeds would not last an entire trip at those speeds (4k). We said he had to go with maglev. We parted ways with him mad that we didn't support his idea.

Now he's promoting maglev. Unfortunately, he's using a standard maglev and that won't work either (very well at least). Standard maglev systems will require the entire length of tubes to be lined with magnets at the bottom. Rare earth magnets don't exist in enough quantities to do this and coils of wires would require an electrified backbone to run the length of the pipe. This is also too expensive. Maintaining a cryogenic temp plate under the car wouldn't be cheap either.

However, if he used Doug Malewiki's Induct-Track and air pressure to transport the cars, it would work cheap, easy and fast.

Induct-Track is a PASSIVE maglev system where the levitation energy comes from inducing drag on forward motion. The neat part is these properites:

1) It doesn't levitate below 1 mph
2) Max drag is at 1 mph
3) It decreases drag from 1 mph up 14 mph
4) It has negligible drag above 14 mph
5) It needs only aluminum plates mounted in the car
6) It needs only lengths of stacked aluminum plates in the track
7) Over 14 mph, it glides as free as standard maglev with no energy input.

You can find Induct-Track online, in Wikipedia, at NASA's site or on Doug's Skytran.net website.

By using air pressure to propel the car, you kill two birds with one stone. Plus you get to integrate both Daryl's and Doug's systems together.

If the tube was evacuated to a specific level of vacuum, and you quickly dumped some air into it behind the car (say from the airlock procedure which is needed), that air would shoot the car down the barrel of the tube like a gun. Balancing this force against inertia, any G-force could be obtained. This leaves a controlling air pressure in the tube which aids at the other end.

When the car approaches the far end, this air builds pressure in front of the car to slow it down. The energy absorbed from the momentum can be controllably used to power a turbo pump to create the next shot's vacuum, recouping 90% of the trip energy for use in the next trip. Mostly, however, it is used to ramp the current cars speed down to 14 mph by a certain point so it can be stopped exactly in the airlock. Look up youtube videos of a ping pong ball cannon where people shoot a ping pong ball through pop cans and 1/2" plywood... UNHARMED.

If we had a Skytran infrastructure in place, you could start from your corner on a trip, ride at 45 mph nonstop to the tube terminal, put your car in the airlock, get shot LA to NYC or SF Bay to Tokyo, exit the airlock, travel nonstop at 200 mph to some town, travel at 45 mph through that town, and eat lunch within 1 to 4 hours anywhere in the world. Private car, totally silent, one entry/exit, 1/20th of the energy of the best current transportation now, WiFi the whole way and with a cost of under $0.05 per mile.

Only when the entrenched monopolies quit fighting these technologies and the people start working to solve people's problems, not just get uber rich, will we get the advancements that we could have.