Abstract:
The invention relates to a ship propulsion system which is comprised of a ship electrical system (5) and of an electric propulsion system (3, 4) that is supplied with power from said electrical system and which is equipped with a cascade control (6) for the propeller motor (3). The rotational speed of the propeller motor (3) is preset by a higher-order controller (2) whose command variable is issued by the throttle lever (1). Filtering means are provided for suppressing impairments to the ship's operation that result due to the high dynamics of the propulsion system (3, 4).
Abstract:
The present invention relates to a propulsion unit arrangement for a ship. The unit comprises a motor housing (6) which is arranged in the water (6) which is arranged in the water (6) and which comprises a motor (2) and any control means related thereto, as well as a propeller (4) which is arranged at a motor shaft (3). Said motor housing is arranged as a separate modular motor unit (1), which can be attached to the ship by means of fastening means (11, 16).
Abstract:
The invention relates to an electric ship propulsion having a propulsion nacelle (1), a rotatable hollow shaft (2) rotationally fixing the propulsion nacelle and a power supply. In order to build a constructively advantageous ship propulsion and dissipate the heat resulting from power supply with as little complication as possible, the power supply includes at least one converter (27) which is mounted inside the hollow shaft (2).
Abstract:
The hydraulic propeller system of the present invention has a central hub (14) including a stationary portion (28), and a rotatable portion (30). A plurality of propeller blades (12) are connected with the rotatable portion (30), wherein each of the plurality of propeller blades (12) has an adjustable pitch, and a counterweight (26) biasing the blades (12) in a first pitch direction . An actuating mechanism (16) is used for adjusting the pitch of each of the plurality of blades (12). A valve (56) for locking the propeller blades (12) at a last commanded pitch is further provided. At least the valve (56), the actuating mechanism (16) are located on, and rotatable with, the rotatable portion (30).
Abstract:
The present invention relates to a propulsion system for vessels and a method for moving a vessel in ice conditions. The system comprises a drive shaft (3), a propeller (4) attached to the drive shaft, a nozzle (5) surrounding the propeller, the nozzle having a water inlet (10) and a water outlet, and rotatable blades or vanes (6) attached to a portion of the drive shaft which projects outside the water inlet for breaking and/or crushing ice before the ice enters into the nozzle. The point of maximum diameter of the blades or vanes is positioned at an axial distance from the plane of the water inlet which is 0.02 to 0.25 times the diameter of the propeller. The rotatable blades or vanes are also having a diameter which is 0.6 to 0.8 times the diameter of the propeller.
Abstract:
A stern mounted vertically adjustable propeller and rudder marine drive. The aft end of a propeller shaft (24), the propeller (38), the rudder (60) and a skeg (42) are vertically movable to adjust a boat's draft for use in the water and when trailering. A stern underwater slot in the boat hull is shaped to enhance water flow and accommodates the propeller shaft which is driven by an inboard engine. As the propeller shaft passes through the hull slot it engages a flexible water seal mechanism (32) which self adjusts or maintains itself in various up and downward positions; its pivotal point is common with the centerline pivotal point of a universal joint (20), which is attached to the drive shaft and connected to the transmission of an inboard engine.
Abstract:
The airship has a fuselage (1) built as an aerostatic buoyant body, having propellers (11,12,13,14) with respective shafts (121) and drive units (7,8,9,10). The respective propeller shaft (121) rotation plane (113) can be tilted all round relative to a drive shaft (104) of the allocated propeller drive, and the hull also does duty as aerodynamic float in a ship devoid of activatable aerodynamic steering system. The hull can be circular or elliptical to give an elliptical section whose upper shell is more steeply curved than the flatter bottom shell. The hull is fitted with a stiffener ring in its equatorial belt with the ring also of elliptical section in its exterior.
Abstract:
A transmission for a stern drive planing power boat having an engine (18) inboard of and adjacent to the stern (16) of the boat and connected through the stern of the boat by means of a universal coupling (32) to a steerable outboard drive leg (30), comprises an epicyclic gearbox (50) mounted inboard on the rear of the engine with at least two alternative selectable gear ratios, and an output shaft (54) connected to the universal coupling. The lowest of the said ratios is a direct drive ratio permanently connected to the output shaft by a one-way clutch (64). Gear change control means may inhibit the selection of a higher gear ratio below a predetermined engine speed, automatically select the gear ratios in response to engine speed, and/or inhibit the selection of a higher gear when a reverse gear is selected.
Abstract:
L'invention se rapporte à un dispositif d'appendice (1) de type hydrofoil, propulseur électrique, dérive, safran ou similaire, pour bateau, comprenant un mât d'appendice (3) monté mobile au moins en translation entre une position relevée et une position abaissée sur une console de fixation (4) conçue pour être solidarisée à un bateau (2), ledit dispositif comportant des moyens d'immobilisation (5) notamment dans une des positions relevée ou abaissée du mât d'appendice (3) sur la console de fixation (4), le dispositif comportant des moyens de traction (6) sous forme d'une corde, d'un câble, ou d'une sangle passant au moins autour d'une poulie de renvoi de démultiplication (7) équipant le mât d'appendice (3), de préférence dans sa partie inférieure sous la console de fixation (4).
Abstract:
Заявлено судно с управляемым движителем, которое содержит гребной винт (1), установленный на выносной поворотной консоли (12), которая через корпус поворотного кулака (17) связана с баллером (2) рулевого устройства, а также шарнир равных угловых скоростей, выполненный с возможностью обеспечения вращения гребного винта (1), и размещенный между кормовым концом гребного вала (24), который выходит из корпуса судна, и носовым концом гребного вала, который проходит в полости выносной консоли (12), при этом передача упорного давления гребного винта на корпус судна обеспечивается через корпус (25) шарнира равных угловых скоростей.