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Hi All,
Ya Know, you could put those wings on a spring loaded pivot. Then the faster you go, the more they tilt up. That would accomplish the same thing. Also, if you let then hang down, they keep the heat in when parked or stopped. In a Prius that is good, but might not be for an idling car. The fan would have to be able to pull them back open.
I somewhat confused on how these work. Wings stall at low-speeds. So, at a low speed the seperation point would be way forward and might act to slow flow. But at real slow speeds, the air easily bends around the wing. So, its like mayber there is a speed of minimal flow? But does a multi-winged lifting body have the same characteristics as a wing by itself? These wings might be so close they intefere with each other's aerodynamics. So does that change how they work?
With the pivot, the wings would begin to close, but then they might not close all the way, because the amount of force is dependant on the mass of the air flowing over the lifting surface. As the gap between the wings closes off, the mass of air through decreases, and so does the force. This might be designed to result in a constant mass flow, no matter what the speed. Is that what is needed by a car? Or is there some other function of cooling fluid flow versus speed?
Maybe one does not even need springs. Just weights along the trailing edge. Again, this might be a Hybrid car solution, as the weights holding the grill shut might be a problem for an car idling in traffic after a long run down the highway.
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