Another Russian submarine fire.

[TorpX]

Wouldn't a fire of this nature, inside the hull make it neccessary to scrap it? I mean because of the hull alloy being compromised?

[TLAM Strike]

Originally Posted by TorpX

Wouldn't a fire of this nature, inside the hull make it neccessary to scrap it? I mean because of the hull alloy being compromised?

Depends on if the pressure hull its self was damaged. Russian boats are double hulled so if the pressure hull is ok perhaps the hydrodynamic hull could be replaced.

[Bubblehead Nuke]

Depending on the heat of the fire, I would be worried about the heat effects on the pressure hull. Heat treatment is HUGE determination in the ductility of a metal. You heat it up and then rapidly quench it (like submerging it in water) the steel will become more harder & brittle.

Brittleness is a BAD thing to have in a pressure hull.

[TLAM Strike]

Russian boats tend to be far more compartmentalized than US boats, so it makes we wonder if they could replaced part of the pressure hull on a Delta.

[Gargamel]

I believe their hulls are titanium. I work with Ti every day at temps over 1000f, and it's amazingly resilient. Stainless steel falls apart within months in this environment, while Ti still looks new. I would doubt this lower heat would have much affect on it. That said, it is a high performance pressure hull.

But think of the crew stuck inside. Wonder how quickly the "Hot in here?" joke got old.

[magicstix]

Originally Posted by Gargamel

I believe their hulls are titanium. I work with Ti every day at temps over 1000f, and it's amazingly resilient. Stainless steel falls apart within months in this environment, while Ti still looks new. I would doubt this lower heat would have much affect on it. That said, it is a high performance pressure hull.

But think of the crew stuck inside. Wonder how quickly the "Hot in here?" joke got old.

Not all hulls are titanium. It's really expensive to manufacture and use. IIRC only the Alfa was an all-titanium hull (mostly because they thought it'd help with MAD), and I think Typhoons use it as well (mostly because they thought it'd stand up to the ice) though it's used in varying degrees in other subs.

[Bubblehead Nuke]

Only the Alpha and Mike class boats had a full titanium hull.

[kraznyi_oktjabr]

Btw could somebody explain why in case of Projekt 705 class usually term 'Alfa class' is used in? I see that NATO phonetic alphabets include both 'Alpha' and 'Alfa' for letter 'A'. Is there some specific reason for use of 'Alfa' instead of 'Alpha' in case (like other sub having 'Alpha')?

[TLAM Strike]

Originally Posted by Bubblehead Nuke

Only the Alpha and Mike class boats had a full titanium hull.

The Papa also had a Titanium hull as did the project 865 Piranha boats. The Project 1910 Uniform class might have it as well.

Edit: Project 865 not 855. Typo on my part.