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Subject:  Re: home-based wind turbines Date:  5/17/2010  12:54 PM
Author:  EngineerPaul Number:  17521 of 18729

"Could it be possible to run the vehicle on battery power while gaining some of that electrical power back from the resultant wind?"

I think that you would find that the amount of energy you gain would be more than offset by the amount of energy that you lose due to increased wind resistance. A clever engineer might figure out some way to use the generator to harvest the vortex created behind the car, which is usually a source of drag loses anyway, but it would probably be better just to apply one's cleverness to eliminating that vortex and come out even further ahead. If you live in a windy area, perhaps you could get some small benefit from a generator that can be extended when the car is parked and thus charge the battery a tiny bit when you aren't using it.
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