Technology and Operations
This forum is for discussing technological & operational matters pertaining to U-boats.
RE: Rudders VIIC/41
Posted by:
Rainer Bruns
()
Date: October 08, 2000 12:51AM
Hi Joe,
From a shipbuilders point of view you are absolutely correct, i.e.: a rudder stock supported above and below is the strongest of its kind and very easily done if one is building a traditional long keel/single screw design, where the prop sits in an aperture fwd of the rudder. One can build a massive rudder shoe, which will hold
the rudder in place even in the event of a total failure of the bearing on top. On the type 7+ 9, however, if the bearing should fail, the rudder and stock will drop and consequently that rod (loosely bolted to the axis center will bend like a piece of spaghetti, if it would not get ripped off. Thus not much of a support for the rudder, so must be another reason to be there. Cheers, RB
From a shipbuilders point of view you are absolutely correct, i.e.: a rudder stock supported above and below is the strongest of its kind and very easily done if one is building a traditional long keel/single screw design, where the prop sits in an aperture fwd of the rudder. One can build a massive rudder shoe, which will hold
the rudder in place even in the event of a total failure of the bearing on top. On the type 7+ 9, however, if the bearing should fail, the rudder and stock will drop and consequently that rod (loosely bolted to the axis center will bend like a piece of spaghetti, if it would not get ripped off. Thus not much of a support for the rudder, so must be another reason to be there. Cheers, RB