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TRAWL DOOR FOR REMOTE ADJUSTMENT UNDER WATER OF THE ACTIVE SURFACE AREA OF THE TRAWL DOOR
TRAWL DOOR FOR REMOTE ADJUSTMENT UNDER WATER OF THE ACTIVE SURFACE AREA OF THE TRAWL DOOR
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机译:拖网门在水下活动表面区域的水下调节
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摘要
A trawl door (2) for remote-controlled adjustment under water of the active surface area of the trawl door (2). The trawl door (2) comprises an upper and lower surface portion dis- posed on either side of a central axis (6). Each surface portion is provided with an opening (10a, 10b) with an associated, movable damper (12a, 12b) structured in a manner allowing it to be moved, completely or partially, over the opening (10a, 10b). The distinctive characteristic of the trawl door (2) is that said surface portions have a hydrodynamic shape and are comprised of an upper and lower wing (A,B) disposed on either side of a tube (4) formed about the central axis (6); - wherein each damper (12a, 12b) is structured movable along an axis (24) extending transversely to the central axis (6); - wherein each damper (12a, 12b) is movably connected to a driving device.(28a, 28b); and - wherein the central tube (4) comprises a remote-controlled communication and control means (32) for individual operation of each driving device (28a, 28b).
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