Air lubrication system
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United States of America Patent
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Feb 21, 2017
Grant Date -
Mar 17, 2016
app pub date -
Feb 19, 2013
filing date -
Feb 21, 2012
priority date (Note) -
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Abstract
A system for providing an air lubricating layer between a substantially flat bottom (3) of a vessel (1) and the water flowing under the bottom as the vessel is moving through the water, whereby the system includes sidewalls (5,5′) and a top wall (4) defining a cavity (6) with an opening (13) situated in an interface plane that is transversal to the sidewalls (5,5′), at the level of the flat bottom (3), the opening having a front end (9) and a rear end (15) seen in the length direction of the cavity, an air inlet (10) spaced from the opening for introducing air into the cavity, whereby the length of the opening (13) of the cavity (6) is between 2 and 10 m and the distance (H) of the top wall (4) from the interface plane is between 0.2 m and 0.5 m.
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