Quote:
Originally Posted by redpoint5
Interesting, so middle of the pack isn't as beneficial as last?
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Yeah. Weird! It could be that these combinations are so long that, the tail vehicle is embedded in the turbulent boundary layer sloughing at the rear, and there was little actual skin friction. Just turbulence all around.( some NACA airships were designed around this phenomena )
In Hoerner's section on trains and streamlined trains, I think some of the cars Cds WERE as low as the tail-car, but those tail-cars were fully boat-tailed, unlike the sedans and buses.