Jeff... good luck with building your own system.. my hats off to you and anyone else who makes an effort to better their life in this day and age.
As bumps on an airfoil... its not unlike the dimples on golf ball.. as the air flows over it I can see it decreasing wind resistance and increasing the airfoils speed... it that helps you with your idea try it out - adding such dimples may also decrease the weight to power ratio and you may see an increase if you experiment. This is why the new professional baseball bats have a curved h*** at the end.. less wind resistance helps the batter produce more power!
Test it out and let me know what you discover in the process. Good luck
Nice video... if this is a small working model designed to replace Wind Generation systems today... the shear weight would be too much to work in any wind much less the ground area to support the system. Love the concept and design... very fluid... but can it spin fast enough to produce any really power?
The Chicago design was put on top of a van in the vertical orientation and was shown to be able to withstand winds over 60 mph. They could not afford a wind tunnel test, so this was the next best thing. The design gets rid of excess wind at high speed and does not tear itself apart.
The 510V reaches around 300W at 11m/s and costs $15,000.
You can buy a 300W machine for about $700 that will do everything this device will do.....it's more material intensive, heavier, and less efficient than a traditional HAWT......it just doesn't make much sense to me.