Abstract: A rudder propeller with an underwater mechanism including a planetary gearing, the planetary gearing including a sun gear, a fixed internal gear and planetary gears, mounted between the sun gear and the internal gear and running on planetary axles of a planet carrier, wherein the planetary gears are mounted on the planetary axles by hydrodynamic slide bearings.

Abstract: A rudder propeller including a drive shaft and a propeller shaft that can be driven by the drive shaft by an angular drive and a planetary gear that can be located on the propeller shaft and including a sun gear that is connected to the angular drive via a coupling, a fixed ring gear and planet gears that revolve between the sun gear and ring gear and that are mounted on a planet carrier. The planet carrier can be secured against torque to the propeller shaft and the coupling between the angular drive and the sun gear can be designed as a double cardanic, rotationally-fixed flexible coupling, in such a way that radial and angular displacements of the sun gear in relation to the angular drive can be compensated.

Abstract: The invention relates to a bevel gear wheel of a bevel gear mechanism, the teeth of which bevel gear wheel have in each case a load flank and a rear flank, wherein the rear flanks have an engagement region for rear flanks of the meshing gear wheel, wherein the outer region, which surrounds the original maximum possible usable engagement region which normally comes into engagement, of the rear flank and an outer edge region of the original engagement region are reduced in terms of the face height thereof such that said reduced regions always remain free from contact and only the remaining, inner, raised region which is reduced in size comes into contact.

Abstract: The invention relates to a method for producing a bevel gear wheel, in particular for rudder propellers, the teeth of which have a macro geometry specific to the gear wheels, the teeth of which can be described by flank and profile lines, the flanks of which have a tooth flank micro topography and the bearing surface of which represents the contact region of the inter-meshing teeth. The crown of a tooth flank corresponds to the elevation of the tooth flank center with respect to the tooth flank edge, wherein the course of the height and width crowns of the flank surface is substantially shaped like a circular arc.

Abstract: A rudder propeller with an underwater mechanism including a planetary gearing, the planetary gearing including a sun gear, a fixed internal gear and planetary gears, mounted between the sun gear and the internal gear and running on planetary axles of a planet carrier, wherein the planetary gears are mounted on the planetary axles by hydrodynamic slide bearings.

Abstract: A rudder propeller including a drive shaft and a propeller shaft that can be driven by the drive shaft by an angular drive and a planetary gear that can be located on the propeller shaft and including a sun gear that is connected to the angular drive via a coupling, a fixed ring gear and planet gears that revolve between the sun gear and ring gear and that are mounted on a planet carrier. The planet carrier can be secured against torque to the propeller shaft and the coupling between the angular drive and the sun gear can be designed as a double cardanic, rotationally-fixed flexible coupling, in such a way that radial and angular displacements of the sun gear in relation to the angular drive can be compensated.

Abstract: The invention relates to a method for producing a bevel gear wheel, in particular for rudder propellers, the teeth of which have a macro geometry specific to the gear wheels, the teeth of which can be described by flank and profile lines, the flanks of which have a tooth flank micro topography and the bearing surface of which represents the contact region of the inter-meshing teeth. The crown of a tooth flank corresponds to the elevation of the tooth flank center with respect to the tooth flank edge, wherein the course of the height and width crowns of the flank surface is substantially shaped like a circular arc.

Abstract: The invention relates to a rudder propeller drive comprising a driving motor (1), the output shaft of which can be effectively connected to a shaft of a propeller by means of a drive train. The propeller shaft is accommodated in a rudder propeller housing that can be mounted outside a hull, while the propeller on the propeller shaft is located outside the rudder propeller housing. A lubricating and/or cooling device is provided for the propeller shaft and/or for drive train areas mounted in front of the propeller shaft. The drive train encompasses a hydrodynamic clutch (3) or a hydrodynamic torque converter which is combined with or integrated into the lubricating and/or cooling device in such a way that the hydrodynamic clutch or the hydrodynamic torque converter and the lubricating and/or cooling device use a joint amount of functional fluid.

Abstract: The invention relates to a ship propulsion unit with drive devices in the hull and all underwater pod, which is located outside of the hull and which has a front propeller and a rear propeller as well as torque transmitting devices between the drive devices and the propellers. The torque transmitting devices contain: a torque transmitting shalt that is shared by both propellers and serves to transmit torque from the drive devices into the underwater pod; front transmission devices, which are placed in the underwater pod and which are located between the shared torque transmitting shaft or both propellers and the front propeller, and; rear transmission devices that are located between the shared torque transmitting shaft of both propellers and the rear propeller. The invention also relates to a ship propulsion method during which a front propeller and a rear propeller, which are assigned to an underwater pod located outside of the hull, are driven by drive devices in the hull via torque transmitting devices.

Abstract: An electrical steering propeller for a seagoing high-speed ship having a polyphase electric motor which is mounted under the stern of the ship via a shaft which can rotate and preferably has two parts in a gondola-like housing, and can be supplied with electrical drive power via a slipring arrangement, and can be rotated via drive motors, wherein the steering propeller is mounted in the stern of the ship via a flat collar bearing (7) in the vicinity of the outer skin (6), in particular above the waterline, with the slipring arrangement (8) being accommodated in the upper part (3) of the shaft (2,3) at the level of the annular bearing (7), and with the drive motors for the rotary movement (9) being physically small and being arranged at least partially in the interior of the collar bearing (4).

Abstract: An electric propulsion pod for a ship having a electric propulsion pod heat rejection member. The electric propulsion pod is attached below the ship by a hollow ship access shaft. The electric propulsion pod contains an electric motor for producing a water propulsion. The electric motor generates an amount of heat that is conducted and subsequently released into the water through the electric propulsion pod and ship access shaft surfaces. The heat rejection member is fitted for increasing the conduction and subsequent release of the electric motor heat.

Abstract: A boat propulsion unit has a propeller which can be withdrawn into a sleeve to a position above the plane of the boat's bottom and enclosed by a cover plate. The water in the closed sleeve can be pumped out, so that the emptied sleeve is accessible for inspection and maintenance operations.