Quote:
|
Originally Posted by Keelbuster
Quote:
|
Originally Posted by BigBadVuk
Most of the subs casualties are by implosion...U see a subs are build strong enought to withsand a lot of presure (btqw cylinder is a geometrical body with very high pressure tolerance)but at greater depths all bulkheads will colapsed all together in miliseconds interval becose of the so called domino effects: they r already well beyond their calculated stress and it is enought to just 1 of them colapse( i assumed that there is 1 or 2 ruptured compartments and that they r flooded so the pressure on the bulkheads are same as outside of hull) and cause sudden and agressive change of pressure to second 1 and then that one will colapse and so one...But like i sad usualy it takes miliseconds to happen and usualy boat is splited in 2-3 part(look at images of Trasher and Scorpion wrecks for example).If hull burst before bulkhead then it will be filled with water in seconds and u will be dead before u realise what happened becose your inner pressure is much smaller then outside.Your lungs,heart,stomack will colapse in a splitsecond and u will be dead.
If u were the part of crew u will be sitting in dark,in some unusual upsidedown position all around of u will be that rumbling-creeking nose of hull under pressure and then "snap" in 1 milisecond u r dead..Very fast and very merciful death compared to drawning...
|
Thinking about water pressure a great depth - it's mostly a force that works in the vertical direction (i.e. along the axis towards the center of the earth), right? I'm thinking that the boat would likely be crushed vertically rather than horizontally. Or, perhaps, because it is a loose fluid, the pressure is roughly equal on all sides. Think about sand - in sand the pressure would be mostly from above. I bet you there's a pressure gradient (Vertical/horizontal) that depends on the liquid viscosity. They might build pressure hulls with this in mind?
Kb |
I beg to differ... The HYDROSTATIC pressure is OMNIDIRECTIONAL, regardless of the objects orientation, size, speed, material etc. It is a force which acts equally on every point on the body (square inch if you have it). Hydrostatic pressure depends on the liquid density (water density is 1g/mililiter) and of course depth.