Power-augmenting shroud for energy-producing turbines
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United States of America Patent
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Aug 28, 2012
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app pub date -
Oct 15, 2009
filing date -
Oct 15, 2008
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Abstract
A shroud, such as for an airborne wind-turbine for converting wind energy into another form of energy, such as electrical energy. The shroud has a ring-like shape with an airfoil cross-section and defines an interior volume for containing a lighter-than-air gas. The shroud includes a central opening oriented along a longitudinal axis of the shroud. The shroud is configured to produce an asymmetric moment of left and right lateral sections thereof, which asymmetric moment yields a restoring moment that automatically orients the longitudinal axis of the shroud substantially optimally relative to a prevailing wind direction.
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