European Tribune - Comments - China wants 380 km/h trains

China wants 380 km/h trains | 72 comments (72 topical, editorial, 0 hidden)

Re: China wants 380 km/h trains (none / 1)

Transportation at this sort of speeds should really be done in the low-drag environment of the upper atmosphere. The problem right now is that the only practical energy source for flight is kerosine, so electric trains (with sustainable power sources) are a better choice. When a sustainable energy storage system for aircraft is available, trains will revert to their natural place in the 10-1000 km travel distance region...

by asdf on Thu Sep 4th, 2008 at 09:09:53 AM EST

Re: China wants 380 km/h trains (4.00 / 2)

One would have to calculate the full energy balance for the same ((drag coefficient) * (cross sectional area) / passengers) - I mean, planes also have to climb to those altitudes.

*Traitor*, n.
A benighted individual who perceives an illusory distinction between serving his nation and abetting the criminals who govern it.

by DoDo on Thu Sep 4th, 2008 at 09:20:16 AM EST
[ Parent ]

Re: China wants 380 km/h trains (none / 0)

Right, the energy used to climb up the earth's gravity is not recovered on the way down... Though it would be really great if it could be...

A vivid image of what should exist acts as a surrogate for reality. Pursuit of the image then prevents pursuit of the reality -- John K. Galbraith

by Migeru (migeru at eurotrib dot com) on Thu Sep 4th, 2008 at 09:30:03 AM EST
[ Parent ]

Re: China wants 380 km/h trains (4.00 / 2)

I'm pretty sure most of is used by the plane to keep on going forward as it descends towards landing...

Auferre, trucidare, rapere, falsis nominibus imperium; atque, ubi solitudinem faciunt, pacem appellant.

by linca (antonin POINT lucas AROBASE gmail.com) on Thu Sep 4th, 2008 at 09:34:54 AM EST
[ Parent ]

Re: China wants 380 km/h trains (none / 1)

like Journey times need the standing round for security, and waiting for your bags adding in.

Life should consist in at least fifty percent pure waste of time, and the rest doing what you please.

by ceebs (bunchofwankers (at) gmail (dot) com) on Thu Sep 4th, 2008 at 09:33:30 AM EST
[ Parent ]

Re: China wants 380 km/h trains (none / 0)

Plus travel time and price to/from final destination.

A vivid image of what should exist acts as a surrogate for reality. Pursuit of the image then prevents pursuit of the reality -- John K. Galbraith

by Migeru (migeru at eurotrib dot com) on Thu Sep 4th, 2008 at 09:35:25 AM EST
[ Parent ]

China wants 380 km/h trains | 72 comments (72 topical, 0 editorial, 0 hidden)

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