How would you find out the angular velocity of a wind turbine

>>8059040
waaaaaait a second, is this homework?

File: 20160508_110146.jpg (1MB, 3264x2448px) Image search: [Google]

1MB, 3264x2448px

>>8059046
Theres a wind turbine right over there see? I took a picture of it.

wind speed right now is 13 mph
so 5.811 m/s
and it's spinning at about 65 RPM

so angular velocity must be...

Reminder: Homework should be posted over at >>>/hm/

Knowing the RPM, you know everything.
RPM/60=Rotations per second=frequency
Angular velocity = 2*pi*frequency

I was just curious about how much power it'd be outputting.
And I figured the angular velocity part out but now I don't know the torque... and there's no way to find out the force
So it doesn't matter I guess

>>8059040
Seems like wind speed is extraneous. If you know the RPM, you know the angular velocity.

>>8059099
Knowing the windspeed would give an upper bound on power and torque, knowing the angular velocity.

>>8059046
>>8059083
>simple questions must be homework
As someone from /diy/ this pisses me off so much, and to cap it off most of you couldn't answer the question anyway, Wind turbines are a popular project for many and a lot of people are interested in the mechanics behind it. I assume OP is one of them

>>8059099
>>8059040

Tangential speed is omega (rad/s) * radius (m)

RPM to rad/s

cycle/min * 2pi/60 seconds

If you don't have a radius then just use a variable.

>>8059707

I will present something interesting related to wind turbines soon.

File: nerds.jpg (9KB, 171x57px) Image search: [Google]

9KB, 171x57px

>>8059099
Cp is power coefficient, about 0.39

>>8059754

To prevent further questions, rho, is probably density in this formula, so for an ideal gas it's (pressure*z) / ( gas constant*temperature)

For an ideal gas z = 1 and that's molar density so you might need to convert the density to a mass density by multiplying by the molar mass of air.

Can't be sure without reading a book since a unit analysis can not be performed without knowing the units of the coefficient

>>8059040
Me brainlet. Need radius.

>>8059754
>cp

MODS!!

>>8059040
USE NUCLEAR YOU TARD

File: Wind Power.jpg (166KB, 665x1000px) Image search: [Google]

166KB, 665x1000px

>>8062025
/thread
but will bump with sweet as turbine shots

File: Fowler Ridge Wind Farm.jpg (937KB, 1064x1600px) Image search: [Google]

937KB, 1064x1600px

>>8062032