Recent content by MacG

Yes. The final results from the theory I stated in my first post only apply to (ideal) lift based wind turbines. However, the equation for determining the top speed P/V=T is always valid when neglecting drag on the rest of the car, rolling resistance and mechanical loss in the teansmission...

1D momentum theory: T=0.5*rho*A*V^2*CT where CT=4*a*(1-a) P=0.5*rho*A*V^3*CP where CP=4*a*(1-a)^2 rho: density of fluid kg/m^3 A: Area of turbine m^2 V: Free stream wind velocity m/s a: axial induction factor, nondimensional. Axial flow velocity at rotor disc is V*(1-a)...

Just some input to this discussion Hi There Fellow Nerds I have some input to this discussion. Consider the case of a horizontal axis wind turbine mounted on a car. Look at the case where you want to go directly in the upwind direction. A first shot at the mechanics here could be...