📝 Sub dive system.
In the thread (motor reversing) we drifted on to the subject of Submarine Watertight Compartments.
Well I am by no means an expert on this subject but I have been following with interest.
Please correct me if I am wrong.
At the depth that most model submariners use there subs is normally at periscope depth or just under especially when the water is not clear.
In a swimming pool then the submarine will be used at much deeper depths.
There are a lot if different WTC's on the market today each having different ways of securing end caps and different ways of ballasting.
Each design has it good and bad points, therefore when considering what system to purchase or make you should consider how you will be using your submarine.
All model submarines will reach the bottom if you don't stop them, and as model submarines are not cheap then why would you risk losing sight of it.
Now this bit is the tricky bit.
The pressures that most model submarines would normally come across are not that great but are greater if using it in a swimming pool.
From what I can see the conversation on wall thickness,depth,and pressure seems to be more on the side of belt and braces.
Obviously the deeper you go the higher the pressure, the air inside the compartment will expand.
Depending on the system that you choose the air pressure inside the tube could increase as the ballast tank is filled forcing the air in to the electrical sections.
Other systems vent the air from the ballast tank and do not increase the pressure inside the tube.
As I have said I am not an expert so please feel free to call me an idiot or something.
As I am sure that we try to over engineer things just to be on the safe side.