Wind blade tip joint
US-2015369211-A1 · Dec 24, 2015 · US
Wind turbine blades
US8992181B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-8992181-B2 |
| Application number | US-201013499399-A |
| Country | US |
| Kind code | B2 |
| Filing date | Nov 1, 2010 |
| Priority date | Nov 2, 2009 |
| Publication date | Mar 31, 2015 |
| Grant date | Mar 31, 2015 |
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- Title
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Abstract
Official abstract text for this publication.
A wind turbine blade includes a multilayer composite structure including a first reflective layer, and a second layer including a plurality of resistive circuit analog (CA) elements. The CA elements are tuned so as to interact with the first layer to provide absorption of electromagnetic (EM) energy over a desired frequency range. The parameters of the CA elements can be varied to provide for frequency tuning and to maintain absorption at a specific frequency range despite varying layer separation, while at the same time ensuring that the mechanical properties of the CA layer are compatible with integration into the turbine blade.
First claim
Opening claim text (preview).
What is claimed is: 1. A wind turbine blade comprising a multilayer composite structure including a first reflective layer; and a second layer spaced apart from said first layer, said second layer comprising a plurality of resistive circuit analogue elements, wherein said CA circuit analogue elements are tuned so as to interact with said first layer to provide absorption of electromagnetic energy over a desired frequency range, said turbine blade includes a plurality of diff…
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Cross-Sectional Technologies · mapped topic
Cross-Sectional Technologies · mapped topic
Electricity · mapped topic
Mechanical Engineering · mapped topic
Mechanical Engineering · mapped topic
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Frequently asked questions
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- What does patent US8992181B2 cover?
- A wind turbine blade includes a multilayer composite structure including a first reflective layer, and a second layer including a plurality of resistive circuit analog (CA) elements. The CA elements are tuned so as to interact with the first layer to provide absorption of electromagnetic (EM) energy over a desired frequency range. The parameters of the CA elements can be varied to provide for f…
- Who is the assignee on this patent?
- Fixter Greg Peter Wade, Spooner Christopher Douglas James, Perry Christopher James, and 1 more
- What technology area does this patent fall under?
- Primary CPC classification F03D1/065. Mapped technology areas include Mechanical Engineering.
- When was this patent published?
- Publication date Tue Mar 31 2015 00:00:00 GMT+0000 (Coordinated Universal Time) (B2). Legal status and post-grant events are not shown on this page.
- What related patents are in patentsdb?
- We list 8 related publications on this page (citations in our corpus or others sharing the same primary CPC).