depth keeping as solo and diveplanes up or down?

[Superesse]

In Wolfpack, the hull angle is limited. So even with max plane settings, the tilt never goes further than maybe 20-30 degrees. Is this realistic? Or would a real submarine eventually do a loop on full speed setting?

[Pisces]

Originally Posted by Superesse

In Wolfpack, the hull angle is limited. So even with max plane settings, the tilt never goes further than maybe 20-30 degrees. Is this realistic? Or would a real submarine eventually do a loop on full speed setting?

This document is the translated real diving regulations for German Uboat during the war.

http://www.uboatarchive.net/Diving/D...egulations.htm

Loops are pretty much out of the question. Even if they can develop enough torque in all attitudes, they are too long compared to the available depth. And the turning circle would extend beyond crushdepth most likely.

But the text does speak of extreme down angles in case of crash dives:

126. In most cases, crash diving at the front depends not only on getting away from the surface as quickly as possible, but also on reaching a greater depth as quickly as possible. For this purpose from 20 meters the boat is to be vigorously tilted (as appropriate with a change of course) and quickly driven deeper at down angles of 15 to 30°.

Remember that going beyond that might be physically possible with the diveplanes, but longitudinal or lateral stability might be lost in certain circumstances. Getting it into an angle might be one thing. Keeping it steady and under control might be another. There is the center of gravity of the boat. But also the center of buoyancy, which can be considered as the center of mass of the displaced water. These are not in the same spot. The center of buoyancy should be above the center of gravity to have the boat automatically level itself. At extreme angles this might invert (depending on if there is a forward/backward offset too).