Quote:
Originally Posted by MetroMPG
Ah ha. I've read more than a couple of quotes in Hucho that seem to be generalizations, and his train comment may be another. Maybe he's missing a few qualifications there.
It makes sense to me that a relatively "short", high speed passenger train with uniform and streamlined coaches is a different animal than a mile long, jumbled up freight train, in terms of boundary layer thickness at the end car.
Efforts to "boat tail" the passenger train are worthwhile obviously.
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Can you imagine an extremely light,light rail,with Cd0.08,and a fraction of the rolling resistance of a rubber tire on pavement?------------------------------ I could erect a " Roller-Coaster" that used wind and solar power to raise the empty car to the top of the incline.Have a bunch of folks take an elevator up to fill it.Then coast,from downtown Dallas,40-miles out to Denton,on gravity power alone at over 100-mph!--------------------------------------------------------------- People pay alot of money to have as much fun at Six-Flags Over Texas over in Arlington!------------------------------------------------------------- Mass-transit anyone?