초록 ▼

A high performance planing hull, designed in particular for boats with drives of fixed or non-steerable type. The hull comprises an additional volume, which is integrated in the immersed part of the stern of the hull. The additional volume extends substantially in longitudinal direction and is symme

A high performance planing hull, designed in particular for boats with drives of fixed or non-steerable type. The hull comprises an additional volume, which is integrated in the immersed part of the stern of the hull. The additional volume extends substantially in longitudinal direction and is symmetrical with respect to the longitudinal plane of symmetry of the hull.

대표청구항 ▼

1. A planing hull, comprising a hull with drives that are non-steerable, said hull extending longitudinally from bow to stern and bounds a hull volume, the hull including a transom at the stern, the stern having an immersed part, the hull having a projecting structure that projects the hull beyond t

1. A planing hull, comprising a hull with drives that are non-steerable, said hull extending longitudinally from bow to stern and bounds a hull volume, the hull including a transom at the stern, the stern having an immersed part, the hull having a projecting structure that projects the hull beyond the transom and is integrated with the immersed part of the stern of said hull, the projecting structure bounding an additional central volume that extends substantially in a longitudinal direction, said additional central volume comprising a lower part with a downwardly inclined surface having an acute angle with respect to horizontal and being movable, said downwardly inclined surface including an actuator housed inside said additional central volume. 2. The planing hull according to claim 1, wherein said downwardly inclined surface has an upside down U-shaped cross section. 3. The planing hull according to claim 1, further comprising two movable trim tabs at sides of said additional central volume. 4. The planing hull according to claim 1, wherein the transom is suited to support axles and rudders. 5. The planing hull according to claim 1, further comprising an internal piston, the downwardly inclined surface being under control by the internal piston. 6. The planing hull according to claim 1, further comprising water flow channeling means including surfaces of the movable trim tab and the additional central volume having an upside down U-shape cross section. 7. The planing hull according to claim 1, wherein the transom Is elongated to define a length the additional central volume defining a widthwise dimension that is shorter than the length of the transom, both the length of the transom and the widthwise dimension of the additional central volume extending transverse to a direction of elongation of the additional central voume. 8. A planing hull, comprising a hull with drives that are non-steerable, said hull extending longitudinally from bow to stern and bounds a hull volume, the hull including a transom at the stern, the stern having an immersed part, the hull having a projecting structure that projects the hull beyond the transom and is integrated with the immersed part of the stern of said hull, the projecting structure bounding an additional central volume that extends substantially in a longitudinal direction, said additional central volume comprising a lower part with a downwardly inclined surface having an acute angle with respect to horizontal and being movable and centrally placed; and at least one electronic control unit making a determination in real time of a position of said downwardly inclined surface and of positions of side movable trim tabs, the determination being made as a function of boat speed as detected by a GPS satellite system and/or of the engine revolutions. 9. A planing hull, comprising a hull with drives that are non-steerable, said hull extending longitudinally from bow to stern and bounds a hull volume, the hull including a transom at the stern, the stern having an immersed part, the hull having a projecting structure that projects the hull beyond the transom and is integrated with the immersed part of the stern of said hull, the projecting structure bounding an additional central volume that extends substantially in a longitudinal direction, said additional central volume comprising a lower part with a downwardly inclined surface having an acute angle with respect to horizontal and being movable, wherein in consideration of a direction of forward movement of a flow of water with the immersed part of the stern immersed in the water, further comprising a movable trim tab positioned downstream of the additional central volume, the hull with the movable trim tab and the additional central volume generating a pitch down couple suited to adjust trim of the hull, the pitch down couple being greater than a pitch down couple generated by the hull with the additional central volume alone. 10. The planing hull according to claim 9, wherein the movable trim tab being downstream of the additional central volume constitutes an arrangement in which the movable trim tab is behind the additional central volume, causing a point in which a hydrodynamic force is applied to be further back with respect to a center of gravity to generate the pitch down couple that is greater than that generated by the hull with the additional central volume alone yet with a same hydrodynamic force. 11. The planing hull according to claim 10, wherein varying an angle of inclination of a surface of the movable trim tab enables adjustment of an intensity of the hydrodynamic force and therefore of the pitch down couple as a function of navigation speed and therefore of the trim of the hull. 12. The planing hull according to claim 10, wherein the movable trim tab deflects downward so as to increase the hydrodynamic force generated by forward movement of the hull at speeds lower than that for reaching a planing condition. 13. The planing hull according to claim 12, wherein, as the navigation speed increases, the movable trim tab deflects at an angle of deflection that decreases progressively until reading the planing condition in which the movable trim tab is substantially horizontal and parallel with a surface of the water.