Abstract:
The vessel comprises a hull (20) having a bottom line (BL) and a bow (30). A recess (100) is arranged in the bow above the bottom line of the hull of the vessel, the recess comprising a bottom surface (110) forming a portion of the hull of the vessel. At least one thruster (60, 70) being rotatable around a vertical axis (Y1, Y2) is positioned within the recess so that a propeller (63, 73) of the thruster in a first position, is positioned below the bottom surface of the recess and in a second position, is positioned above the bottom surface of the recess.
Abstract:
The present invention concerns an oscillating foil propulsion system comprising at least one movable foil, at least one pitch mechanism connected to the at least one movable foil and configured to control a pitch motion of the at least one movable foil, at least one heave mechanism connected to the at least one movable foil and configured to control a downstroke heave motion and an upstroke heave motion of the at least one movable foil, and wherein the at least one pitch mechanism is configured to control a pitch angle of the at least one foil such that a thrust force and a drag force are obtained during a downstroke heave motion, and the at least one pitch mechanism is configured to control a pitch angle of the at least one foil such that an induced drag force during an upstroke heave motion is substantially smaller than the drag force during the downstroke heave motion. The invention further concerns a method for oscillating at least one movable foil.
Abstract:
Described is an amphibious vehicle (20) designed for moving, on land and in water, comprising floating means (24) to support the vehicle during the movement in water, at least a use station (21) for the user, at least one rotation unit (22) for supporting the vehicle during the movement on land; the rotation unit (22) being rotatable about an axis of rotation (28) positioned at a right angle relative to a direction of advance of the vehicle, wherein at least one oar (26) connectable to the rotation unit (22) comprises a blade (27) and a base portion (31), the blade (27) protruding relative to the lateral dimensions of the rotation unit (22) at least during an extended configuration, and comprising means for moving the oar (26) positioned between the latter and the rotation unit in such a way that the oar (26) is movable between the extended configuration and an initial. configuration wherein the oar (26) withdraws within the lateral dimensions of the rotation unit (22).
Abstract:
The invention relates to a ship, notably for tugging, and which in particular is suitable for the high seas, which comprises cycloidal propellers (3, 3a, 17, 17a) which are arranged in a pair below or at the level of the front (1) of the ship, as well as at least one keel fin (4) mounted below the stern (2). Instead of the cycloidal propellers other usual types of propellers can be provided for, for example a z-propeller. The ship is characterized in that astern along the longitudinal ship axis, behind the keel fin (4), a usual drive propeller (6) is mounted which has substantially radial propeller blades (8).
Abstract:
Propulsion device for boats or device or energy production comprising: a first track (6a) a second track (6b); driving wheels (3a-d) each having a peripheral surface (4) comprising a friction device (5) rotatably arranged in at least one frame (2), wherein the first track (6a) is arranged in contact with the friction devices (5) at a first set of driving wheels (3a, b), the second track (6b) is arranged in contact with the friction devices (5) at a second set of driving wheels (3c, d), such that the tracks move with the same speed as the peripheral surface of the rotatable driving wheels where the track is in contact with the friction devices when the driving wheels rotate; a plurality of shovel rollers (7a-d) each comprising a first (8a) and a second end (8b) and between the ends a device (9) with an outer periphery, wherein the first ends (8a) of the shovel rollers are arranged in the first track (6a) and the second ends (8b) of the shovel rollers are arranged in the second track (6b) such that the shovel rollers move with the tracks in relation to the structure when the driving wheels rotate, wherein the device further comprises a flat continuous carpet-like device (10) with side-ends (11) which is arranged between the first and second sets of driving wheels and abutting the outer periphery of the shovel rollers (7a-d); that the carpet-like device forms a shovel surface (13) between two of the shovel rollers (7a-d), and that the formed shovel moves in relation to the frame when the shovel rollers (7a-d) move in relation to the frame.
Abstract:
A marine vessel control system includes a primary marine propulsory mechanism attached to the vessel and an intelligent vessel control system. Also included is an attitude sensor linked with the intelligent vessel control system. An actuating system responding to an output of the intelligent vessel control system is linked with the primary marine propulsory mechanism for adjusting a thrust vector of the e primary marine propulsory mechanism.
Abstract:
The invention relates to a vessel comprising a hull (1) and a paddle wheel (3) arranged to turn with respect to the hull, whereupon the vessel can be steered by the paddle wheel (3) and any separate steering rudders, propellers or the like are not necessarily needed. According to the inventive idea, the paddle wheel (3) is arranged to a thrust part (2) separate from the hull (1), and the thrust part (2) can be turned with respect to the hull (1) by steering means (9).