Recent content by julian_lp

The ultimate (and unique) point is to know how much torque the rotor has on every angular velocity (given a certain wind velocity). Remember that if there is an acceleration, there is a force (in this case a torque). It doesn't care if you use such a force to accelerate the rotor itself or to...

That's an interesting point, in fact, in the university where we proposed our method we've been told exactly the same as you've said, but, the curious thing is that there is not any kind of "steady state" in the wind field, I mean, windmills work with constantly changing winds (in terms of both...

I'm in fact including it (lost due to aero drag), I'm just measuring how much power does the rotor takes out of the wind, and that's my main objective. I don't know why you mention the change on lift related to the wind speed change. Again, I want to know how much power does the rotor takes out...

Description of method: The rotor's mass is constant so when it accelerates in a given wind, it does so with an acceleration = torque/mass. This acceleration will depend essentially on wind speed. If tests are carried out in the open with non-turbulent winds it is possible by using a tachometer...