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Ok, we've finished our project and I am assuming there is a small amount of drag (no idea how small). We are doing a presentation tomorrow and would like to have a rough idea of when a train begins to brake. 2 or 3 miles sound reasonable? (I'm pretty sure 125mph trains slow to 0mph with...

I have tried to calculate the drag but without much success, it just seemed a bit too good to be true - you can't get energy for nothing! The turbines we're designing are 3 metres tall and 1 metre in diameter like this: http://www.tangarie.com/products/gale_vertical_axis_wind_turbine.php I just...

Hi, I'm an engineering student doing a second year design project. The project is to use track-side wind turbines to capture the wind energy created by trains to make electricity. Although the idea isn't very feasible, we still have to carry on with it. (Note, we are not constructing...

Oh ok, I'll try and post some more things too! Do you have any rough ideas? I know a train travelling at max speed of 125 mph takes over a mile and a half (I think!) to stop, so would 2 miles be a good estimate?

Hi, I'm an engineering student doing a second year design project. The project is to use track-side wind turbines to capture the wind energy created by trains to make electricity. Although the idea isn't very feasible, we still have to carry on with it. (Note, we are not constructing...