RE: Typhoon static diving mini submarine
Dave,
I would like to also point out that it is referenced in the book I mentioned above on the same page (page 37), that "Albacore's Pase I stern, a conservative approach in that it places the moveable control surface behind the screw, where the thrust from the screw's wake multiplies the force acting on the surfaces." They also state further in the paragraph, "DTMB (David Taylor Model basin) urged that placing the control surfaces forward of the Albacore's screw would be hydrodynamically cleaner, but with the fear of some loss of control when backing down."
This is True, it is harder to control a subamarine in this configuration while backing down, and it is a true test of skill for the entire control party while conducting this type of manuever.
r/
Tim