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A Small and Efficient Home Wind Turbine Blade That Can Be Installed In 8 Seconds

electric pinwheels 300x210 A Small and Efficient Home Wind Turbine Blade That Can Be Installed In 8 SecondsAmateur wind turbines can often be as important to one as a 100-foot tall turbine with a giant propeller, because even if they’re small, they provide the energy necessary for a family’s needs, for example. Building safe and effective parts for this green technology niche is as important as building more efficient turbines at the high size.

Electric Pinwheels, a Windsor, NY-based company founded in 2008, has designed flexible and easily-attachable blades specially suited for small wind turbines. Their working principle resembles that of a bird’s feather and the overall weight is reduced by 63 percent compared to wood of fiberglass blades having the same size.

The company even demonstrates the technology through a video showing an 8-seconds install, unlike typical wind turbine blades, which have to be attached with bolts or screws, and that may require alignment or balancing.

These bolts and screws also require a specific torque to prevent loosening during operation, however properly calibrated torque wrenches are not found in the typical toolbox. Attaching blades can take a long time and may not be installed properly, leading to a dangerous out-of-balance turbine and possible catastrophic failure.blade impact 8cz0 zv9h 194x300 A Small and Efficient Home Wind Turbine Blade That Can Be Installed In 8 Seconds

They use a special airfoil that, combined with the right type of alternator with larger magnets and coils harvests even low-speed winds. The S809 airfoil, otherwise used in many utility-scale wind turbines, has impressive aerodynamic properties over other airfoil shapes.

Lighter blades allow quicker response to changing wind speed and direction. The rotor on a wind turbine acts as a large gyroscope, resisting change in direction as it spins. Reducing the rotating mass by 63% and moving weight toward the center of rotation has the effect of reducing the moment of inertia by 78%, which is the property that governs the degree of gyroscopic effect.

Electric Pinwheels even shares a free template that you can use from their website to create your own wind turbine blade.

[via electric pinwheels]

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About the author

Ovidiu has always been a fan of technology and Captain Planet. Unable to ignore the technical possibilities that exist nowadays, he started collecting and blogging about the most interesting news out there and saw that there were a lot of people interested in the same that stuff he was.