THE SURFACE STRUCTURE OF WINDMILL ROTORS FOR SPECIAL CIRCUMSTANCES
First Claim
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1. A coating for windmill blades, known for a) it contains carbon nanotubes, and b) the current for heating is generated by external potential source, or c) the current is generated electromagnetically/electromagnetic induction.
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Abstract
The present invention relates to an improvement of windmill rotors—more specifically rotors that have been designed to be used in cold and wet climate, such as northern sea areas. This can be achieved by incorporating an electrically conducting layer on or in the surface of a windmill blade. The same coating can also be used to achieve a stealth property.
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Citations
15 Claims
- 1. A coating for windmill blades, known for a) it contains carbon nanotubes, and b) the current for heating is generated by external potential source, or c) the current is generated electromagnetically/electromagnetic induction.
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9. A blade of a windmill that contains several heating elements, and each of the said heating element can be heated separately using external control electronics.
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10. Heating elements that have been connected to one potential source so that the heating power of the heating elements is adjusted by choosing the thickness of the elements so that at the tip of the blade the resistance of the element is smaller than closer to the base.
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14. A coating material that will absorb radar radio signals, known for the composition that contains carbon nanotubes, and is capable significantly or totally prevention of the reflection the radar signal, eliminating the disturbance for the radar, and allowing the detection of the targets behind the windmill.
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