VAWT 004 - Recent Tweaks
1 year ago
9
Some small improvements to the design (or at least in my view). The Ugrinsky portion is now 76mm in diameter as opposed to 80mm, and 65mm tall from mid-plane as opposed to 80mm from mid-plane. The airfoils are now NACA0020 with a 56mm chord. My hope is for somewhat improved airflow through the turbine. The generator now has 12mm diameter x 3mm thick magnets with no backing ring for lower mass and inertia, and the coil is 100 turns of 34 AWG magnet wire. I also added some weep holes in the LED bezel area and under the bearings to remove any water that may accumulate in those trapped areas.
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