JPWO2021239963A5 - - Google Patents

Claims (13)

Arrangement (20) for reducing the propulsion requirements of a ship (100), in particular a ship, comprising at least one rudder (21) and at least one accommodation space (22) for a propeller (30). , the accommodation space (22) is formed in the traveling direction (F) of the ship (100) in front of the rudder (21),
At least one front nozzle (23) having at least one guide surface (24) is arranged in the traveling direction (F) in front of the accommodation space (22) of the propeller (30), and at least one side fin (25) is arranged on the ladder (21) ,
The pre-stage nozzle (23) having the at least one guide surface (24) and the at least one side fin (25) are arranged so that in the undeflected ladder position, the at least one side fin (25) is connected to the rudder (21). of the ladder (21), such that the pre-nozzle (23) having the at least one guide surface (24) is mostly or completely located on the other side of the ladder (21). ), the side fins (25) are not provided on the side of the ladder (21) on which the front nozzle (23) is mostly or completely arranged. 2. The pre-nozzle (23) is formed as a ring nozzle or as part of at least one ring nozzle, and the pre-nozzle (23) at least partially circumferentially limits the flow path (40). composition. Arrangement according to claim 2, wherein the at least one guide surface (24) of the pre-nozzle (23) is designed in the form of a fin arranged on the ring nozzle or on a part of the at least one ring nozzle. Arrangement according to claim 3, wherein the at least one guide surface (24) designed as a fin projects from the outer shell surface of the pre-nozzle (23) designed as a ring nozzle or as part of a ring nozzle. 5. Arrangement according to claim 1, wherein the at least one guide surface (24) is designed as a support strut (50) of the pre-nozzle (23). Arrangement according to any one of claims 2 to 4 , wherein the at least one guide surface (24) is designed in the flow path (40) of the pre-nozzle (23). Any of claims 2 to 4 , wherein the at least one guide surface (24) extends radially from the axis of rotation (RA) of the pre-nozzle (23) beyond the ring nozzle or a part of the ring nozzle. The configuration described in item (1). Arrangement according to any one of claims 1 to 7, wherein the pre-nozzle (23) comprises a plurality of guide surfaces (24, 50) distributed uniformly or non-uniformly. Claim: wherein the at least one side fin (25) is arranged substantially at right angles to a first external surface (26) and/or a second external surface (27) of the rudder (21). 9. The configuration according to any one of 1 to 8 . Said at least one side fin (25) is at an angle of less than 90 degrees, preferably less than 75 degrees, in particular 10. An arrangement according to any preceding claim, preferably arranged at an angle of less than 60 degrees. Arrangement according to any one of the preceding claims, wherein the at least one side fin ( 25 ) comprises a tapered sweep. 12. The at least one side fin (25) attached to the rudder (21) comprises a cap arranged on its side or a winglet (29) arranged on its side. The configuration described in item (1). A ship (100), in particular a ship, comprising an arrangement (20) according to any one of claims 1 to 12 .