RPM vs. blade diameter and pitch

[windexperimenter]

I would like to know if there is a mathematical method for calculating RPM's based on blade diameter and pitch for a given wind speed.

Or if a chart is available, that would help.

[willib]

Yes there are two very usefull blade calculators:

both are very good

http://www.alton-moore.net/wind_calculations.php

http://www.warlock.com.au/bladecalc-abstract.htm

..Bill

.

[Flux]

Yes the calculators predict optimum speed on load. Unless you match the prop to the generator you will see 3:1 variations in speed at least.

Flux

[windexperimenter]

Thanks for the help guys.  I can already see that my design will need a little revising.  Or I will need to talk the wind gods into maintaining wind speed of 25mph. LOL

[TomW]

..menter;

Well, if you discover how to pull off the later option, please post the process that works.

Tom