US2010170427A1PendingUtilityA1

Device for reducing the entry of fluid into a tunnel

28
Assignee: DRS DRAG REDUCTION SYSTEMS SAPriority: Jun 13, 2007Filed: May 15, 2008Published: Jul 8, 2010
Est. expiryJun 13, 2027(~0.9 yrs left)· nominal 20-yr term from priority
Inventors:Yvan Brulhart
Y02T70/10B63H 25/46
28
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Claims

Abstract

The device for controlling the flow of fluid passing in front of an orifice or cavity produced in the hull of a vessel has at least one deflector ( 5 ) rigidly fixed to the wall of the vessel upstream of the orifice or cavity. This deflector has a planar inner face directed towards the hull of the vessel and a curved outer face which is highly convex upstream and tapered downstream.

Claims

exact text as granted — not AI-modified
1 . Device for controlling the flow of fluid passing in front of an orifice or cavity produced in the hull of a vessel, characterised in that it has at least one deflector ( 5 ) rigidly fixed to the wall of the vessel upstream of the orifice or cavity; in that this deflector has a planar inner face directed towards the hull of the vessel and a curved outer face which is highly convex upstream and tapered downstream. 
   
   
       2 . Device as claimed in  claim 1 , characterised in that it has a second deflector of a similar shape to the first, disposed downstream of the orifice or cavity. 
   
   
       3 . Device as claimed in  claim 1 , characterised in that the planar inner face of the deflector is parallel to the hull of the vessel. 
   
   
       4 . Device as claimed in  claim 1 , characterised in that the planar inner face of the deflector forms an angle with the hull of the vessel so as to create a space between this face and the hull which narrows or increases in the direction of the orifice or cavity. 
   
   
       5 . Device as claimed in  claim 2 , characterised in that the distance separating the upstream and downstream deflectors is substantially equal to the diameter of the orifice or cavity. 
   
   
       6 . Device as claimed in  claim 2 , characterised in that the planar inner face of the deflector is parallel to the hull of the vessel. 
   
   
       7 . Device as claimed in  claim 2 , characterised in that the planar inner face of the deflector forms an angle with the hull of the vessel so as to create a space between this face and the hull which narrows or increases in the direction of the orifice or cavity.

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