Invention Grant
US08932025B2 Rotor blade with an integrated radar absorber for a wind power plant
有权
带有风力发电厂综合雷达吸收器的转子叶片
- Patent Title: Rotor blade with an integrated radar absorber for a wind power plant
- Patent Title (中): 带有风力发电厂综合雷达吸收器的转子叶片
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Application No.: US12993655Application Date: 2009-05-16
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Publication No.: US08932025B2Publication Date: 2015-01-13
- Inventor: Joachim Bettermann , Andreas Frye
- Applicant: Joachim Bettermann , Andreas Frye
- Applicant Address: DE Ottobrunn
- Assignee: EADS Deutschland GmbH
- Current Assignee: EADS Deutschland GmbH
- Current Assignee Address: DE Ottobrunn
- Agency: Crowell & Moring LLP
- Priority: DE102008024644 20080521
- International Application: PCT/DE2009/000689 WO 20090516
- International Announcement: WO2009/140949 WO 20091126
- Main IPC: F04D29/38
- IPC: F04D29/38 ; H01Q1/12 ; F03D11/00 ; H01Q17/00

Abstract:
A rotor blade comprising fiber-reinforced plastic for a wind power plant is provided with a radar absorber embedded into the fiber-reinforced plastic. The rotor blade includes a layer close to the surface with a defined electrical sheet resistivity of 100 to 800 ohm/square, which is located at a depth of 2 to 5 mm below the surface. The rotor blade also includes a layer far removed from the surface with a defined electrical sheet resistivity of at a maximum 50 ohm/square at a distance to the layer close to the surface of 5 to 16 mm. The integrated radar absorber covers one or several discrete surface sections of the rotor blade, without covering the entire surface of the rotor blade.
Public/Granted literature
- US20110129352A1 Rotor Blade with an Integrated Radar Absorber for a Wind Power Plant Public/Granted day:2011-06-02
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