Jim,
How high does a vehicle need to be to mostly avoid aerodynamic ground effects, and does this height depend on Re? Do most solar cars meet the criteria?
Quote:
Originally Posted by NeilBlanchard
No reasonably practical road vehicle has ever been built with less than a Cd of 0.1 except the early Bionic/Boxfish model.
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That's the problem right there. The Boxfish model has never been made in to a car, and if it were, it would have a Cd MUCH higher than 0.095. It's just a Kammback, tapered in plan as well as in profile. In that regard, it's a lot like like the long-tailed EV1, or a truncated, oversized tadpole trike, and you would expect a drag coefficient similar to those examples.