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Wind power extracted from turbulent air
Random late night idea: Would it make any sense to use turbines to extract power from air just before it goes turbulent at the back of a vehicle?
How about running a fan (or an array of fans) gyro-copter-style just behind the detachment point to force air into the low pressure area behind the car? Could something like this be used in such a way as to smooth out the flow behind the car enough to justify the energy spent spinning up the blades?
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