Abstract: Deflectors configured to be attached to cables towed behind a vessel for performing a marine survey and associated methods are provided. A deflector has a body including a wing portion and a knuckle portion. The wing portion has substantially flat wings extending away from a position where the body is attached to the cable. The knuckle portion is configured to attach the wing portion to the cable so that the wing portion remains able to rotate about three rectangular axes while being towed underwater.

Abstract: Deflectors configured to be attached to cables towed behind a vessel for performing a marine survey are provided. A deflector has a wing body including a first part joined to a second part to form a swept-back-wing shape, the first part and the second part being substantially coplanar. A first straight line stretching along at least a portion of a front edge of the first part makes a first angle with a second straight line stretching along at least a portion of a front edge of the second part. A third straight line stretching along at least a portion of a trailing edge of the first part makes a second angle with a fourth straight line stretching along at least a portion of a trailing edge of the second part, the first angle and the second angle being non-zero angles.

Abstract: Seismic data acquisition system, method, and connecting part configured to connect a lead-in to a streamer. The connecting part includes a single body extending along a longitudinal axis (X) between the lead-in and the streamer; the single body has a first end configured to connect to the lead-in through a first connection device and the body also has a second end configured to connect to the streamer through a second connection device; at least a link connecting the first end to the second end and configured to receive a tension that appears in the single body; a cable extending through the single body and configured to provide data communications; and plural modules provided on the single body. The single body is configured to wound-up on a spool.

Abstract: The damping device is intended to form a drag-mode damper for a helicopter blade, and is incorporated in an aircraft rotor system. This damping device comprises: an external frame intended to be coupled to a first rotating element, and a radially internal element mounted coaxially to the frame and intended to be coupled to a second rotating element; at least one elastomer damper of annular cross section mounted fixedly to the frame and to the internal element; and a working chamber bounded by the frame and by the damper and communicating with a compensation chamber bounded by a highly deformable flexible member mounted coaxially to the internal element. The working chamber is formed at a first end of the device and communicates with the compensation chamber via a porous structure surmounting an end opening of the flexible member, which member is mounted in the internal element.

Abstract: The damping is device intended to form a drag-mode damper for a helicopter blade, and is incorporated in an aircraft rotor system. This damping device comprises: an external frame intended to be coupled to a first rotating element, and a radially internal element mounted coaxially to the frame and intended to be coupled to a second rotating element; at least one elastomer damper of annular cross section mounted fixedly to the frame and to the internal element; and a working chamber bounded by the frame and by the damper and communicating with a compensation chamber bounded by a highly deformable flexible member mounted coaxially to the internal element. The working chamber is formed at a first end of the device and communicates with the compensation chamber via a porous structure surmounting an end opening of the flexible member, which member is mounted in the internal element.

Abstract: A flexible joint with bellows for coupling two tubular elements together for passing fluid in a flow space and presenting a main axis that is constituted by the axis common to the tubular elements when they are in their aligned position, and including at least one flexible joint element functionally connected to a first tubular element and to a casing, together with a coupling bellows coupling together the two tubular elements, the coupling bellows, the flexible joint element, and the casing defining walls of a fluid-filled cavity. The joint including a flexible pressure-compensation device spaced apart from the bellows and having a first face forming at least part of a wall of said cavity and a second face that is in communication with the flow space.

Abstract: The invention relates to a flexible joint with bellows for coupling two tubular elements together for passing fluid in a flow space and presenting a main axis that is constituted by the axis common to the tubular elements when they are in their aligned position, and including at least one flexible joint element functionally connected to a first tubular element and to a casing, together with a coupling bellows coupling together the two tubular elements, the coupling bellows, the flexible joint element, and the casing defining walls of a fluid-filled cavity. The joint including a flexible pressure-compensation device spaced apart from the bellows and having a first face forming at least part of a wall of said cavity and a second face that is in communication with the flow space.