Abstract
ABSTRACTWind turbines appear to be an ongoing threat to radar systems because of their large radar cross‐sections (RCS). In particular, the Doppler shift of the radar signal caused by blade rotation can confuse even modern Doppler radar systems. To reduce the radar interference problem, this study presents a stealth wind blade structure with a minimal weight increase compared with the conventional wind blade structure, while maintaining the same manufacturing process. The Salisbury screen‐type absorbing structure with a carbon nanocomposite sheet was adapted for the wind blade. The radar‐absorbing structure was integrated with the wind blade structure by sharing the spacer and ground of the absorbing structure with the wind blade structure. A ply of carbon fabric was used as the ground, for which the reflection was verified to be greater than − 0.078 dB over the whole range of X‐band frequencies. The radar‐absorbing structure was designed to have a reflection loss greater than − 40 dB at 10 GHz. The stealth wind blade structure was manufactured via the resin transfer process used for conventional wind blades. The RCS reduction performance of the stealth wind blade was measured in the compact range at 10 GHz, and an RCS reduction of nearly 20 dB was achieved in the angle range of the most severe RCS.Copyright © 2013 John Wiley & Sons, Ltd.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
