Article with an internal structure
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United States of America Patent
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Dec 30, 2014
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N/A
app pub date -
Dec 14, 2009
filing date -
Jan 27, 2009
priority date (Note) -
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Abstract
An aerofoil has first and second panels spaced apart from each other to provide a cavity, the cavity containing a damping material, the first panel has at least one protrusion extending therefrom within the cavity towards the second panel, the protrusion having a proximal end and a distal end, wherein the proximal end is secured to the first panel and the distal end is slidably mounted to the second panel.
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