Navy's newest badass aluminum warship: USS Independence (LCS 2)

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TwiceOver

Lifer
Dec 20, 2002
13,544
44
91
Looks cool. Doubt it will actually do anything other than cruise around for the next 30 or so years, but it looks cool!
 

shiner

Lifer
Jul 18, 2000
17,116
1
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You do know that it is Aussie built?

Must be a lot of Australians in Mobile Alabama then....

From the General Dynamics website FAQ section:

Q: Where is the ship being built?

The shipyard is in Mobile, Ala.


Now the company building it is Austal shipyards which is an Australian company, but rednecks built that sucker!!!!
 

SunnyD

Belgian Waffler
Jan 2, 2001
32,674
145
106
www.neftastic.com
in absolute strength, not even close, for a variety of reasons. aluminum does tend to have a better strength/weight ratio (or more properly, strength/density).

for reference, an aluminum alloy from Kobe Steel holds the ultimate tensile strength (UTS) record at 780 MPa.

alternatively, a classic high strength steel like 4340, which has been around for ages, has a UTS in the area of 1600-1800 MPa.

The 18-Ni maraging steels series can have UTS's in excess of 2000 MPa.

I believe you... as I said, if memory serves, it's been a long, LONG time since I dealt with such things. And at the time I was dealing with so many alloys I can't begin to tell you what's what.
 

oogabooga

Diamond Member
Jan 14, 2003
7,806
3
81
Is a range of 3,500 Nautical miles a lot? It doesn't seem like that much to me but I don't know anything about what a typical ships range is.
 

PlasmaBomb

Lifer
Nov 19, 2004
11,815
2
81
aluminum tends to be fairly corrosion resistant by itself due to the formation of a passivating oxide layer almost immediately upon exposure to air.

secondly, the navy has all sorts of coatings, paints, and other material requirements designed to mitigate corrosion as much as possible. it's not like they're just tossing a giant block of aluminum into the ocean and hoping for the best.

doesn't aluminium corrode/dissolve in salt water...?

(granted the alloy used may well be resistant)
 

Fenixgoon

Lifer
Jun 30, 2003
31,822
10,361
136
I believe you... as I said, if memory serves, it's been a long, LONG time since I dealt with such things. And at the time I was dealing with so many alloys I can't begin to tell you what's what.

i'm just getting into the metals world. i'm starting to get familiar with some alloys, but there are just sooooooooooooo many it's unbelievable. i can't imagine remembering them all
 

bignateyk

Lifer
Apr 22, 2002
11,288
7
0
That might be important, but I don't really see how all these new toys are justified when we're spending billions of dollars on two wars and running up an ever-increasing deficit. I know that the Navy has been planning this stuff for years, but it still seems silly and completely unnecessary given the problems we're currently facing.

You do realize that just about every major technological advancement in the last 75 years has come from military/defense research dollars don't you?
 

Arkaign

Lifer
Oct 27, 2006
20,736
1,377
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Is a range of 3,500 Nautical miles a lot? It doesn't seem like that much to me but I don't know anything about what a typical ships range is.

For this type of support ship it's plenty. It's not like we'd be sending these things willy-nilly around the world all alone, the Navy has plenty of fuel ships on the seas, and in any serious conflict they would be popping out of CBG to do what they were supposed to do, then returning.
 

sdifox

No Lifer
Sep 30, 2005
96,217
15,787
126
so, what if the enemy just shoot DU or tracer rounds at this aluminium can?
 

gorcorps

aka Brandon
Jul 18, 2004
30,740
452
126
Aluminum doesnt seem like a good material for something that might face small arms fire.

lol

Do you have any idea what you're talking about?


Listen to Eli... there are many engineers round these parts, many so specialize in metals and materials. You better figure out what you're talking about before you look silly.
 

Gibsons

Lifer
Aug 14, 2001
12,530
35
91
so, what if the enemy just shoot DU or tracer rounds at this aluminium can?

If you can get close enough, just plain HE should do the trick, no need to use DU. But the lcs has a gun, missiles and two helicopters, so getting close enough isn't trivial.
 

sdifox

No Lifer
Sep 30, 2005
96,217
15,787
126
If you can get close enough, just plain HE should do the trick, no need to use DU. But the lcs has a gun, missiles and two helicopters, so getting close enough isn't trivial.

I don't like to assume no one can get to the ship. That is a very bad assumption to make for tincans.
 

PieIsAwesome

Diamond Member
Feb 11, 2007
4,054
1
0
Mmm... Didn't the USS Belknap fire and the Falklands (Malvinas) War show the danger of having a ship superstructure made of aluminium when there's a fire? It conducts heat very well (four times more than steel) and can spread the fire. On the other hand, it's lighter and more rigid than steel, less susceptible to corrosion too.

That's what I was thinking. IIRC one ship struck by an exocet missile, that failed to detonate, caught fire from the missile's exhaust and the ship was lost.
 

apac

Diamond Member
Apr 12, 2003
6,212
0
71
This is the first I've read about the Phalanx/seaRAM systems before. Sure wouldn't want to be on the receiving end of those things.
 

Regs

Lifer
Aug 9, 2002
16,665
21
81
Its not corrosion that is the main concern, but more on the order of rigid material verses vibration/waves. Another concern is cavitation on traditional high speed & high wave riding design.

Wha, no one ever hear of the expression: " a fart that could peal the paint off a battleship"?
 

Pacfanweb

Lifer
Jan 2, 2000
13,149
57
91
Missiles can solve a lot of problems. Why do you think most battleships are retired? If not all of them.
Not because of the fear of missles, I can guarantee you that. A Battleship is the strongest ship afloat, even now. It'd be the hardest to sink, too.

Oh, and they carried missiles, too, in addition to being the fastest capital ships in the fleet.
 
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