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TECHFIND - ENERGY
Stealth Wind Turbines
A Danish wind turbine maker, in concert with a defense contractor in the UK, is working on a way to make arrays of wind turbines far less likely to spoof air traffic control and other radars, blurring their views of airplanes, weather, and other vital things. The best solution is to make the windmills partly invisible to the radar, by reducing the degree to which they reflect radio waves, then radar software could filter them out. The company has been working on using radar-absorbing materials that can be inserted into the blades during manufacture. The radar-absorbing material is similar to the composites used in stealth aircraft and, since it is inserted inside the blade, does not change the aerodynamic profile or efficiency of the windmill. The company replaced one blade of a standard windmill with a "stealth" blade and found its radar cross-section was significantly reduced. The company plans to carry out a full-scale demonstration next year – with all three blades replaced, and the rest of the structure painted in radar-absorbing material.
Media Spiders®
A Danish wind turbine maker, in concert with a defense contractor in the UK, is working on a way to make arrays of wind turbines far less likely to spoof air traffic control and other radars, blurring their views of airplanes, weather, and other vital things. The best solution is to make the windmills partly invisible to the radar, by reducing the degree to which they reflect radio waves, then radar software could filter them out. The company has been working on using radar-absorbing materials that can be inserted into the blades during manufacture. The radar-absorbing material is similar to the composites used in stealth aircraft and, since it is inserted inside the blade, does not change the aerodynamic profile or efficiency of the windmill. The company replaced one blade of a standard windmill with a "stealth" blade and found its radar cross-section was significantly reduced. The company plans to carry out a full-scale demonstration next year – with all three blades replaced, and the rest of the structure painted in radar-absorbing material.
