Abrégé

The invention relates to a wind-assisted propulsion device (1) comprising: - first and second sails (3, 4), which are opposite one another and are interconnected so as to share a trailing edge (BF); - a tubular inflatable casing (5) extending along a longitudinal axis (Z'-Z), and comprising: a leading edge (BA), intended to face the wind (V), and defining a camber line (L1) together with the trailing edge (BF); a junction zone (6), in which the first and second sails (3, 4) are joined, having an angular position (Ω) that varies on the basis of the camber line (L1); wherein the tubular casing (5) delimits a closed chamber filled with a fluid (F), preferably air, exerting a pressure on the inside of the tubular casing (5), the pressure being different from atmospheric pressure and being determined on the basis of a wind speed (V) such that the leading edge (BA) is kept under tension.

Classes IPC  ?

• B63H 9/061 - Voiles rigidesVoiles à profil aérodynamique
• B63H 9/067 - Voiles caractérisées par leur construction ou leur procédé de fabrication
• B63H 9/068 - Voiles montées en pivotement au sommet du mât