QinetiQ metamaterial reduces radio frequency signature of turbines by 99%
Wind turbines can cause clutter and confusion in airport and meteorological radar systems: 50% of the sites in the UK where a turbine could usefully be placed are unavailable due to the potential for radar interference.
The simplest solution would be reduce the radar reflections and scatter from the turbines, but a typical material solution (e.g. an absorbing cladding) would add weight, cost and manufacturing complexity, potentially requiring a change in the shape of the blades that would reduce performance.
- Modelling
- Net Zero Targets
- Real-World Testing
- Energy Generation
Impact
QinetiQ developed a novel approach and by combining different designs at different regions along the 50m blades, modelling showed a significant reduction in the radar returns from turbines.
Working with EDF Energy and Vestas, the technology was applied to new turbines and reduced the radar signature by up to 99%.
Applications
The reduction in the radar returns produced by turbines allow their use in new locations in the vicinity of commercial and military radar systems.
This application of metamaterials removes the restrictions limiting where wind turbines can be placed. Consequently, new sites can be approved helping to realise the value from clean technology and accelerate the low carbon transition.
This technology enabled France’s largest wind farm to be installed in a previously unusable location: 35 turbines, generating power equivalent to the annual consumption of 120,000 people.
