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New Blades

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Boondocker:
The first set of blades made for this wind turbine were carved with a S822 airfoil.

http://www.fieldlines.com/index.php/topic,147743.msg1024937.html#msg1024937

Using the program QBlade performed some comparisons of different blades.  The black line is a blade using a hybrid air foil using NACA 4415 & GOE 222.  This is really a fun program to look at different foils and render a blade.

hiker:
nice blades and gen...........

kitestrings:
So (in the second photo) is that one of the new blades on the left, and one of the original on the right?  The left one appears a bit longer.  Is this to get more power/better match to the alt?

Regards, ~ks

Boondocker:
KS,

The blade is indeed larger, rotor diameter is now 13.25'.    With these new blades, power has increased.  Seeing 200 watts produced at 11 mph (approximate), and 300 watts with a 12 mph (approx).

Matching the blades to the alternator is easily accomplished programming the Midnite Classic Charge.

Boondocker:
Yesterday afternoon had some nice winds to test out the new blades.   18 mph wind, gusting at 35mph.
The below photo was taken during a gust.

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