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Re: [PSUBS-MAILIST] Composite pressure hull?
making this reply to add to my own letter!
It may very well be that composites have not been tested in submarine vessels. They have won out against a lot of metals. We no longer use a diving helmet like the Navy Mk-5, we use helmets like the Superlite 24, which is composites. Divers in shipyards wear them for the same reason people in the construction business wear helmets (which now are plastics or composites). Not only are they lighter in weight but have a greater bursting strengh. Size to weight ration may be an issue, but i don't feel it to be a great problem.
To test the pressure of the hull, for me would be relatively simple. I have relatives with shrimp boats. Just take it out to a deep enough part of the ocean. Load the inside with enough lead ballast, lower the hull over the side untill it reaches the desired depth.
bob duncan
Bob Duncan <katsurencho@yahoo.com> wrote:
I'm afraid i probably won't be ready to start the design of my own submarine for another year.
Alvin the deep sea research submarine designed by Al Vine of Woods Hole Institute uses a titanium pressure hull.
I have an intrest in designing a similar pressure hull, but using a relatively thin sheet or layer, of pure aluminum (1100 alloy), and wraping it with layers of roven woven (fiberglass cloth), and using epoxy resin. Which has been used in the marine industry for years.
High pressure gas containers (both sphere and cylinders), have been around for years. They hold an internal pressure of 10,000 psi (working pressure). I would think this would be very feasible for an even higher external pressure.
The areas of concern are the places where electric or hydraulic connections go thru the pressure hull.
Bob Duncan
Two guiding principles govern Israel Naval Commando doctrine:
1.Every defense system is vulnerable.
2.The enemy can deal with weapons and operational methods that are known; for that reason, naval commandos use imagination, daring and initiative, to create situations which cannot be anticipated.
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Two guiding principles govern Israel Naval Commando doctrine:
1.Every defense system is vulnerable.
2.The enemy can deal with weapons and operational methods that are known; for that reason, naval commandos use imagination, daring and initiative, to create situations which cannot be anticipated.
Do you Yahoo!?
The New Yahoo! Shopping - with improved product search