I drew up a design for an electric vehicle(in this case, it was a car, as I have the most experience with those) that would run on air. I drew a picture of it, and tested out some of the math required, but I was wondering if it could work, and if anyone here has tried.
Basically, It looks like any normal car, except with an extremely low drag coefficient. But, it has a grill. Inside, are some pinwheel-like fans connected to a generator. As you drive, the wind heading at your vehicle would charge a battery, thus making energy to drive. But, like everything else humans have done, there is no way it could be 100% efficient, so it would need extra energy. Anyways, energy cannot be created, only transferred, so theoretically the pinwheel-thingy would increase the coefficient of drag, taking up more energy to drive, rendering them useless. Unless you are able to charge while the vehicle is off. The question, how could this work, if it can, and can it be practical? If you want me to post the drawing, just ask.
Basically, It looks like any normal car, except with an extremely low drag coefficient. But, it has a grill. Inside, are some pinwheel-like fans connected to a generator. As you drive, the wind heading at your vehicle would charge a battery, thus making energy to drive. But, like everything else humans have done, there is no way it could be 100% efficient, so it would need extra energy. Anyways, energy cannot be created, only transferred, so theoretically the pinwheel-thingy would increase the coefficient of drag, taking up more energy to drive, rendering them useless. Unless you are able to charge while the vehicle is off. The question, how could this work, if it can, and can it be practical? If you want me to post the drawing, just ask.