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Subject: Would it be better to build more Burkes rather than DDG 1000s?
Charles99    3/17/2008 6:53:39 PM
Or an incremental improvement of hte Burke? Given the economy and the already high expense of the DDG-1000's, we might end up with a very small number of high end platforms. The Burkes aren't going to be as capable, but on the other hand, we might be able to build more of them, and I'd lay odds that they'll still be the most powerful surface combatant on the oceans for a good long time. Would it make sense to go for more of the good as opposed to a little of hte best, or does the DDG-1000 give such a tremendous leap in capability that it would be better to buy them, even if only a few?
 
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ArtyEngineer    doggtag-the AGS   3/19/2008 1:43:18 PM
There isnt that much "detail" on the AGS in the public domain and hence I cant give any, however lets just say that gun is a "monster"!!!!
 
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B.Smitty       3/19/2008 2:15:28 PM
I don't know what was included in the 87 tonnes.  I got the number from here....

This page also notes that as of 2005, DDX would  have "only" 335 rnds per mount.  If this is the case, then expecting 120 for a single mount on a Burke doesn't seem unreasonable to me.

I don't know what the full up weight or volume requirements are for either Mk45 or AGS.  A loaded, 61 cell Mk41 VLS weighs around 220-230 tonnes, so figure half of that for the forward 32-cell VLS on a Flight IIA.  I imagine VLS's are rather dense, so the problem may be volume rather than weight. 




 
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doggtag       3/19/2008 2:39:07 PM

I don't know what was included in the 87 tonnes.  I got the number from here....

This page also notes that as of 2005, DDX would  have "only" 335 rnds
per mount.  If this is the case, then expecting 120 for a single mount
on a Burke doesn't seem unreasonable to me.


I don't know what the full up weight or volume requirements are for either Mk45 or AGS.  A loaded, 61 cell Mk41 VLS weighs around 220-230 tonnes, so figure half of that for the forward 32-cell VLS on a Flight IIA.  I imagine VLS's are rather dense, so the problem may be volume rather than weight. 





OK, yeah, I can accept that.
 
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doggtag       3/19/2008 2:40:02 PM

There isnt that much "detail" on the AGS in the public domain and hence I cant give any, however lets just say that gun is a "monster"!!!!



...and seeing the security blanket still in effect,
no choice but to accept this explanation, too.
 
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doggtag       3/19/2008 2:57:50 PM


I guess it is possible to develop a shore-bombardment missile based on ESSM. It should have the range of 8" guns on Des Moines class and carries the same amount of HE. Any ship that equips with Mk.41 can have 4 in each cell and fire them at 1 second interval. The missile can be configured so that it flies designated trajectory by GPS/INS as well as data link to the ship. Multiple-missile barrage can be carried out at different trajectories and still arrive the target simultaneously. An Arleigh Burke can carry nearly 400 of these, though 100 to 200 is more practical number.

However, I don't see why this kind of weapon will be developed due to changing tactical environment. There will be no Normandy-style landing in the future, and if there will be, this kind of  weapons and other solutions will be put on the table.

We had our chance with such a weapon: POLAR (Precision, Over-the-horizon Land Attack Rocket),
a LockMart in-house proposal for a marinized G-MLRS-type rocket, with a warhead up to 90kg and ranges approaching 200km.
Although little info is found online anymore, it's a safe bet that to get the 200km range, it wasn't going to be with the 90kg warhead.
But then again, if those recent developments with throttlable ram-rocket motors prove very favorable, a 9" diameter long range land attack rocket that can quad pack into VLS cells in place of ESSM quadpacks is still an option for the future, and has the pontential to carry larger warheads than even the vaunted LRLAP to greater distances, without the need for the massive AGS turret to fire them.
 
 
And also, don't forget LockMart's other in-house proposal, the multimode seeker-equipped P44, 10 of which can be packed in a pod that occupies the same dimensions as a 6-cell MLRS/HIMARS rocket pod (the P44 being 7" in diameter compared to MLRS' 9" diameter).
Recently, I've seen a couple of sites mentioning a P44/42, although what the /42 part means, I'm still trying to find out.
Needless to say, the P44 offer suggests a warhead up to 28 pounds (a metal-augmented Hellfire-class warhead), to a range of 70km.
But keep in mind: with future propulsion techniques, more energetic explosives, and improvements in electronics capabilities,
certainly there are plentry of possibilities that we will see these land attack missiles, equipped with all weather day/night sensors, that can be carried by the several dozens/few hundreds on any number of ships.

We may not see the idea of the Arsenal Ship surface again (at least not on par with a ship the size of the DDG1000), but mini-Arsenal Ships are certainly foreseeable: frigate-sized, with the primary role of littoral/amphibious support operations (LPD/LPH/LHA escorts?).
In effect, an LCS built with more teeth and enhanced overall capabilities in a similar-sized hull.
(Personally, I don't see everyone going modular like the USN is hoping the LCS will succeed at.)
 
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Yimmy       3/19/2008 3:27:25 PM
With only 300 odd rounds per gun, is this system really going to be that potent?

I apologize, in that I am going into X vs Y calibre arguments here, but is 700 odd total rounds of 155mm ammunition really going to achieve that much against a determined enemy?

I have read a fair few accounts of artillery affect (or the lack thereof), I suppose the best accounts coming from WWI and Vietnam, where it was demonstrated that a well dug in enemy could withstand upwards of thousands of rounds of shells up to 8 inch - only to come out to defend their positions when the infantry went in.  In the book I am reading now about the 101'st at firebase Ripcord in 1970, there some excellent accounts of small barren hills being hammered with hundreds of rounds from 105mm batteries, 155mm batteries, 175mm batteries, 8 inch batteries and 81mm mortars simultaneously - for incredibly little proven effect.

What is more, although I see great value in proving all these new technologies on the one hull for future R&D and implementation - is it wise to outfit a hugely expensive warship with all these long range missiles, long range radars and stealthy hull form, with a cannon designed for NGS?  I realise the gun has quite an impressive range, but even though it isn't often mentioned as a threat, what if a counter battery radar were to come to life, detect the fast stream of large heavy shells from the cruiser, and engage it with a hidden 130/152mm warsaw pact battery?

 
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B.Smitty       3/19/2008 4:02:36 PM
Yimmy,

That's 300 GPS-guided, <20m CEP rounds vs thousands of unguided munitions.  If your targeting is good (a big 'if), guided munitions can make a huge difference.

It is a shame that they gave up on designing AGS to use regular, unguided 155mm rounds. 


 
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Yimmy       3/19/2008 4:09:55 PM
Artillery is already that accurate though Smitty, or at least as accurate as you would want it to be to engage a company location.  It just takes adjustment to get it on target in the first place, getting the right elevation, deflection, fuse settings et al - but once it's on it's on.
 
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ArtyEngineer    B Smitty   3/19/2008 4:16:30 PM

Yimmy,



That's 300 GPS-guided, <20m CEP rounds vs thousands of unguided munitions.  If your targeting is good (a big 'if), guided munitions can make a huge difference.

It is a shame that they gave up on designing AGS to use regular, unguided 155mm rounds


At the max renages this gun would lob regular "Dumb" shells, the dispersion IMHO would make the system suitable for harrasing fire at best.  The number of rounds needed for destruction/neutralisation goes WAY up!!!!!

 
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doggtag    (I especially apologize to Herald for this one...)   3/19/2008 4:25:27 PM
...as it's a predominantly French design,
www.dtic.mil/ndia/2007fuze/SessionIIIA/campion.pdf
(SPADICO 1D Course Correcting Fuze)
 
Again, apologies to Herald-the-antiThales (sorry),
but this was the best I could do on short notice (have other pdfs of CCFs in development, on another computer...)
 
but anyhow, as these things mature and offer increasing accuracies (better than unguided saturation barrages offer),
only the LRLAP's long range will be its greatest saving grace...
 
 
 
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