DD 21, DD(X), DDG-1000 Zumwalt Concepts

[Triton]

Artist impressions of land-attack destroyer using the "Sea Blade" design by Lockheed Martin. Lockheed Martin would later use the "Sea Blade" design for the Freedom-class littoral combat ship.

Source:
http://www.globalsecurity.org/military/systems/ship/dd-21.htm

 

[donnage99]

Anyone got hi-res?

 

[Triton]

Artist's impression of United Defense concept.

An artist's stylized concept of a land-attack missile destroyer, showing a ship with a very small RCS, a large vertical-launch missile battery, and two 155-mm long-range guns (one aft of the superstructure). Such a design would be a major departure from previous surface ships, which have substantial RCS and infrared signatures. The DD 21 is shown with conformal radar and communication antennas. (United Defense)

Sources:
The Naval Institute Guide to the Ships and Aircraft of the US Fleet, Seventeenth Edition by Norman Polmar, Naval Institute Press, 2001

http://www.globalsecurity.org/military/systems/ship/dd-21.htm

 

[Triton]

Artist impressions of an Ingalls Shipbuilding, now part of Northrop Grumman Shipbuilding, land-attack destroyer concept.

Source:
http://www.globalsecurity.org/military/systems/ship/dd-21.htm

 

[Triton]

Artist's impression of electromagnetic rail gun installed on DD(X).

Projectiles fired from an electromagnetic railgun will travel up to 290 miles in less than six minutes, exiting the atmosphere before hurling into their target at a velocity of 5,000 feet per second. The force of the impact will obliterate targets without an explosive aid.

Source:
http://www.popsci.com/scitech/article/2004-06/electromagnetic-railgun

 

[Grey Havoc]

From an old 2002 USN budget document relating to FY2003:

Distributive Aperture System:
Initiate:
(U) For Surface Ships, the Navy will launch a technology program (FY02 through FY06) for a ship based Distributive
Aperture System (DAS) Infrared Search and Track (IRST) for transition to DDX, CGX, and CVNX. The staring IRST system
will enable a passive self-protection capability for U.S surface ships. The system will address the need for low
radar cross-section sensor for surface naval ships. The system will provide 360-degree staring panoramic view and
awareness at-sea and in port of the surface, air, and asymmetric target set. Each module of the staring system will
consist of focal plane arrays, anemorphic optics, stabilization, and modularization techniques. The ship’s combat
center will control the DAS through a central computer high-speed processor. The DAS, consisting of eight modules
for surface combatant ships will vary based on the size of ship. It will provide surface ships with a 360-degree
panoramic staring view on the horizon to line of sight, and be able to detect, declare, and track air contacts and
surface contacts within 2-3 seconds. The sensor modules will also be able to pan its view downward to view the
surface from the ship to line of sight for in port counterterrorism awareness. DAS will address the surface naval
ships needs for a passive fighting and in-port security ability. The Navy will demonstrate a three-module prototype
with a high-speed central computer in FY06. It is critical to demonstrate the technique to seam stitch three sensors
panoramic view.

 

[Grey Havoc]

http://www.dtic.mil/dtic/tr/fulltext/u2/a511508.pdf

 

[donnage99]

.....

 

[TomS]

A lineup of alternative hull forms considered for SC-21. These are not all designed to equal capabilities. The two ships to the top of the image have fewer VLS cells and no VGAS (the little bright circles near the superstructure in the lower two ships)

 

[Deleted member 29851]

SC-21 COEA Concept 3B1 "Littoral Combatant". This concept was chosen to be moved forward into the next stage of production (the DD(X) program), and is now the Zumwalt-class destroyer. This drawing is from Norman Friedman's U.S. Destroyers: An Illustrated Design History (Revised Edition), and is dated around 1995, right after the SC-21 programs started. The "VGAS" it mentions is the "Vertical Gun for Advanced Ships", and was ultimately developed into the AGS. It can be seen here in this poorly scaled image I posted below. Note everything except the barrel would be below the deck, and it would take up the same space a 61/64-cell Mk 41 block. It could only fire guided shells. I believe the radars it mentioned where later developed into the SPY-4 and SPY-3.

 

[Hood]

A couple of Gold Team DD(X) images.

 

[Deleted member 29851]

A couple of Gold Team DD(X) images.

Can I ask what this is from? Looks like a USNI book.

 

[Hood]

It was from their Combat Fleets of the World, 2002-03 Edition (I think).

 

[A Tentative Fleet Plan]

Interesting rendering from BAE circa 2004. The Gas Turbine Uptakes? running up along the side of the deckhouse have a greater similarity to the earlier DD-21 design than to DDG-1000 as built.

https://flic.kr/p/7X1YHU

View: https://www.flickr.com/photos/baesystemsinc/4560738702

 

[A Tentative Fleet Plan]

This document from the Government Accountability Office briefly covers the 2009 Radar/Hull Study and some of the Zumwalt-derivatives covered by it.

 

[A Tentative Fleet Plan]

A pair of videos from 2002 and 2003 outlining various scenarios in which the Advanced Gun System would be used.

In case the links below ever go down, Wayback Machine Links are here for the 2002 video and here for the 2003 video.

A few points of interest:

1) The models used are of the Gold Team DD-21 Design.

2) The use of DPICM rounds.

3) In the first, and slightly earlier video, the AGS mountings are shown to be capable of loading at elevations below 90 degrees, and are described as being capable of firing at 12rpm. In the second video they return to vertical and are described as being capable of firing at 10rpm, suggesting that the derating of rpm and shift to simpler loading cycle took place around 2002-2003.

View: https://youtu.be/pg1uHRVx8-I

View: https://youtu.be/ilwIhIwf5yI

 

[Cordy]

Army fired the BAE HVP guided projectile 110+km developed for the Navy Electromagnetic Rail Gun as the XM1155 sub-caliber program from a 155 mm XM907E2 58 caliber cannon March 29

Cancel the approx.$3 billion conversion of the Zumwalts to fire the hypersonic CPS missiles and just re-barrel the AGS 155mm guns and save a couple of $billions.

https://www.baesystems.com/en/article/bae-systems-successfully-tests-guided-projectile

 

[TomS]

Army fired the BAE HVP guided projectile 110+km developed for the Navy Electromagnetic Rail Gun as the XM1155 sub-caliber program from a 155 mm XM907E2 58 caliber cannon March 29

Cancel the approx.$3 billion conversion of the Zumwalts to fire the hypersonic CPS missiles and just re-barrel the AGS 155mm guns and save a couple of $billions.

https://www.baesystems.com/en/article/bae-systems-successfully-tests-guided-projectile

How much to turn HVP from a science experiment into a deployed weapon?

And how does it fulfill the role envisaged for CPS?

 

[Cordy]

Army fired the BAE HVP guided projectile 110+km developed for the Navy Electromagnetic Rail Gun as the XM1155 sub-caliber program from a 155 mm XM907E2 58 caliber cannon March 29

Cancel the approx.$3 billion conversion of the Zumwalts to fire the hypersonic CPS missiles and just re-barrel the AGS 155mm guns and save a couple of $billions.

https://www.baesystems.com/en/article/bae-systems-successfully-tests-guided-projectile

How much to turn HVP from a science experiment into a deployed weapon?

And how does it fulfill the role envisaged for CPS?

The cost of the HVP would be a tiny fraction of $billions being spent on developing the CPS/LRHW

What is the role and business case for Zumwalt CPS, expect max deployment will be one of the three ships at current Navy maintenance rates, so a total of 12 missiles would be operationally available which think will have minimum token impact going by the massive amounts of munitions we are seeing being expended in Ukraine month in, month out.

 

[Deleted member 29851]

https://patentimages.storage.googleapis.com/f2/a1/9f/b8ca49dd842a01/EP0933611A2.pdf

Found on Google Patents, dated 1999 by Lockheed Martin.
Link to Original: https://patents.google.com/patent/EP0933611A2/en

 

[A Tentative Fleet Plan]

More PR fluff, again on DD(X) and not DD-21, and in atrocious quality. Normally I wouldn't post this here, except that a diagram of DD-21 in some ship-design software appears at the 1:36 mark:



Seems to be the best publicly available view of the internal arrangement off DD-21.

View: https://youtu.be/GbrIY0Jq6ek?feature=shared

 

[A Tentative Fleet Plan]

From Navy DD(X), CG(X), and LCS Ship Acquisition Programs: Oversight Issues and Options for Congress, March 7th 2006

Using these variables, the Navy in 2002 developed notional DD(X) concept designs with estimated full load displacements ranging from 12,200 tons to about 16,900 tons. One of the concept designs, with an estimated full load displacement of about 12,700 tons, included 32 Advanced Vertical Launch System (AVLS) cells (rather than the DD(X)’s 80), 2 AGSs (like the DD(X)), 600 AGS shells (rather than the DD(X)’s 920), a maximum sustained speed a few knots lower than the DD(X)’s, and a helicopter flight deck smaller than the DD(X)’s. Another concept design, with an estimated full load displacement of about 12,200 tons, included 64 AVLS cells, 1 AGS, 450 AGS rounds, a maximum sustained speed a few knots lower than the DD(X)’s, and helicopter flight deck smaller than the DD(X)’s.

The Navy in 2003 developed another set of notional DD(X) concept designs with estimated full load displacements ranging from 11,400 tons to 17,500 tons. One of the concept designs, with an estimated full load displacement of 13,400 tons, included 64 AVLS cells, 1 AGS, and 450 AGS rounds. Another concept design, with an estimated full load displacement of 11,400 tons, included 32 AVLS cells, 1 AGS, and 300 AGS rounds.

The 2002 and 2003 notional DD(X) concept designs with displacements of less than 14,000 tons appear to have preserved other DD(X) features, such as the wavepiercing, tumblehome hull, the integrated electric drive system (though with reduced total power in at least some cases), the total ship computing environment, the autonomic fire-suppression system and other features permitting a reduced-sized crew, the DD(X) radar suite, the hull and towed-array sonars, medium-caliber guns for use against surface targets, and a helicopter hangar (though not necessarily as large a hangar as on the DD(X)).