4 ms·
It's obvious to me why this is possible. It isn't about transferring "speed" from the wind, it's about transferring energy. Traditional methods, such as sails,
by sh1mmer 16y ago
It's obvious to me why this is possible.
It isn't about transferring "speed" from the wind, it's about transferring energy. Traditional methods, such as sails, didn't have a high enough wind capture/energy output ratio.
By using a propellor they are capturing and using the energy from the wind much more efficient than they would with a sail.
Obviously, that doesn't (and I can't) explain the finer detail, but I don't think it's hard to understand conceptually.
- jules 16y agoIt's not about the efficiency, it's about the relative speeds: the blades of the propellor are moving relative to the vehicle whereas a sail is stationary.
- JoachimSchipper 16y agoSo in your model, this car would run go equally fast without the gears between the propeller and the wheels? Why then do sailboats not have propellers instead of sails?