Thales

Benoît Theckes

Christophe Borel

Jean-Philippe Brunet

Cyril Bouyer

Jean Lagadec

Yohann Fraisse

Philippe Vicariot

Rémy Malburet

A method controlling a thruster of a marine vehicle is provided. The marine vehicle is at least partially submerged in a liquid and includes a body and a thruster including two propellers. Each propeller includes blades intended to tum about a rotation axis of said propeller. The method includes a step of low-speed maneuver controlling, during which the thruster is controlled in such a way that each propeller generates a flow directed toward the flow generated by the other propeller and reaching the flow generated by the other propeller.

Marine vehicle thruster control method

A method for controlling a thruster of a marine vehicle includes a body and a thruster mounted on the body of the vehicle, the vehicle being at least partially immersed in a liquid and moving with respect to the liquid along an axis of displacement in a direction of displacement and rotating about at least one axis of rotation perpendicular to the axis of displacement with a rotational speed, the thruster including an upstream propeller and a downstream propeller along the axis of displacement in the direction of displacement. The method including a stabilization step, in which the thruster is controlled such that the main axis of the upstream flow generated by the upstream propeller at a given instant t is an estimated main axis on which a position of a center of the downstream propeller, situated substantially on the axis of rotation of the downstream propeller, is estimated to be situated at a later instant t+dt at which the flow generated by the upstream propeller at the given instant t reaches the downstream propeller, the estimated main axis depending on the rotational speed of the vehicle.

A device for handling and towing a submersible object includes a tilting structure with a support, to pivot about a first axis parallel to a horizontal plane, and equipped with a guide device, a pivot connection about a second axis in a plane substantially perpendicular to the first axis, to allow a rotary part of the tilting structure to rotate relative to the support, the rotary part having the guide device, a stabilizing device to keep the rotary part in a deployed position relative to the support provided a torque of the relative pivoting between the rotary part and support about the second axis does not exceed a predetermined threshold, to allow the rotary part, equipped with the guide device, to rotate relative to the support about the second axis once a torque of relative pivoting between the rotary part and support about the second exceeds the threshold.

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Sophia Antipolis, France

Benoît Theckes