Key point: With so many major threats around the world, the Navy wants more ships to ensure it can handle every crisis.
The Navy’s budget proposal accelerates construction of new Arleigh Burke class DDG 51 Destroyers in 2019 as the service prepares to start construction of its first new, next-generation Flight III destroyer this year.
Budget data says the Navy proposes to increase production of DDG-51s to 3 in 2019, up from 2 in 2018, all while the prospect of a DoD budget amendment adding a 3rd DDG 51 in 2018 gains traction in Congress.
The new destroyers under construction, along with the upcoming emergence of DDG-51 Flight III ships, make up a key component of the Navy’s plan to reach an overall fleet size goal of 355 ships in coming years. The newest destroyers represent technically advanced warships able to fire new weapons, better detect enemy attacks and prepare for a highly contested future maritime threat environment.
Speaking at the Surface Naval Association symposium in January, Capt. Casey Moton, Major Program Manager, DDG 51 Program Office, PEO Ships, said fabrication of the first Flight III Destroyer will begin at Huntington Ingalls in May of this year. Flight III destroyer warships are slated to start entering service in the 2020s.
Moton emphasized the new, super-sensitive AN/SPY-6 radar as a distinguishing characteristic of Flight III destroyers, as it is expected to vastly expand the protective envelope for ship-integrated defenses.
“Fielding the AMDR will bring much improved ballistic missile defense by providing truly integrated simultaneous air and missile defense,” Moton said at SNA.
The Navy is now finalizing the detailed designed phase and finishing the 3D modeling needed to prepare for construction.
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The Navy hopes to enter an efficient, cost-saving multi-year contract initiative to build the first 10 Flight III ships; the first two of the new class of destroyers are now under contract. Huntington Ingalls Industries is building one called DDG 125, and Bath Iron Works is on contract to build DDG 126.
“Detailed designed is on track to support the start of construction with Flight III,” Moton said.
The Raytheon-built AN/SPY-6(V) radar is reported by developers to be 35-times more powerful than existing ship-based radar systems; the technology is widely regarded as being able to detect objects twice as far away at one-half the size of current tracking radar.The AN/SPY-6 radar, also called Air and Missile Defense Radar (AMDR), is engineered to simultaneously locate and discriminate multiple tracks.
Navy officials tell Warrior that AMDR has completed a System Functional Review for integration with the upgraded Aegis Baseline 10 radar and software systems.
The AN/SPY-6 platform will enable next-generation Flight III DDG 51s to defend much larger areas compared with the AN/SPY-1D radar on existing destroyers. In total, the Navy plans as many as 22 Flight III DDG 51 destroyers, according to a previously completed Navy capabilities development document.
The AN/SPY-6 is being engineered to be easily reparable with replaceable parts, fewer circuit boards and cheaper components than previous radars, according to Raytheon developers; the AMDR is also designed to rely heavily on software innovations, something which reduces the need for different spare parts, Moton said.
The Navy has finished much of the planned software builds for the AMDR system, however Moton explained that using newly integrated hardware and software with common interfaces will enable continued modernization in future years. Called TI 16 (Technical Integration), the added components are engineered to give Aegis Baseline 10 additional flexibility should it integrate new systems such as emerging electronic warfare or laser weapons.
“The top-level biggest thing we are doing with Baseline 10 is to integrate AMDR and take full advantage of simultaneous air and missile defense. This will set up for future capabilities such as electronic warfare attack,” Moton added.
Moton said that special technological adaptations are being built into the new, larger radar system so that it can be sufficiently cooled and powered up with enough electricity. The AMDR will be run by 1000-volts of DC power.
“We want to get the power of the radar and minimize changes to the electrical plan throughout the ship,” Moton said.
The DDG Flight III’s will also be built with the same Rolls Royce power turbine engineered for the DDG 1000, yet designed with some special fuel-efficiency enhancements, according to Navy information.
The AMDR is equipped with specially configured cooling technology. The Navy has been developing a new 300-ton AC cooling plant slated to replace the existing 200-ton AC plant, Moton said.
Before becoming operational, the new cooling plant will need to have completed environmental testing which will assess how the unit is able to tolerate vibration, noise and shocks such as those generated by an underwater explosion, service officials said.
DDG 51 Flight III destroyers are expected to expand upon a promising new ship-based weapons system technology fire-control system, called Naval Integrated Fire Control – Counter Air, or NIFC-CA.
The technology, which has already been deployed, enables ship-based radar to connect with an airborne sensor platform to detect approaching enemy anti-ship cruise missiles from beyond the horizon and, if needed, launch an SM-6 missile to intercept and destroy the incoming threat, Navy officials said.
Navy developers say NIFC-CA presents the ability to extend the range of attack missiles and extend the reach of sensors by netting different sensors from different platforms — both sea-based and air-based together into one fire control system.
NIFC-CA is part of an overall integrated air and missile defense high-tech upgrade now being installed and tested on existing and new DDG 51 ships using Aegis Baseline 9. Baseline 10, the next iteration of Aegis technology, brings additional improvements to NIFC-CA.
The system hinges ship-based Aegis Radar –- designed to provide defense against long-range incoming ballistic missiles from space as well as nearer-in threats such as anti-ship cruise missiles.
Through the course of several interviews, SPY-6 radar developers with Raytheon have told Warrior Maven that simulated weapons engagements have enabled the new radar to close what’s called the “track loop” for anti-air warfare and ballistic missile defense simulations. The process involves data signal processing of raw radar data to close a track loop and pinpoint targets.
The radar works by sending a series of electro-magnetic signals or “pings” which bounce off an object or threat and send back return-signal information identifying the shape, size, speed or distance of the object encountered.
The development of the radar system is hastened by the re-use of software technology from existing Navy dual-band and AN/TPY-2 radar programs, Raytheon developers added.
AN/SPY-6 technology, which previously completed a Critical Design Review, is designed to be scalable, Raytheon experts say.
As a result, it is entirely plausible that AMDR or a comparable technology will be engineered onto amphibious assault ships, cruisers, carriers and other platforms as well.
Raytheon statements say AN/SPY-6 is the first truly scalable radar, built with radar building blocks – Radar Modular Assemblies – that can be grouped to form any size radar aperture, either smaller or larger than currently fielded radars.
“All cooling, power, command logic and software are scalable. This scalability could allow for new instantiations, such as back-fit on existing DDG 51 destroyers and installation on aircraft carriers, amphibious warfare ships, frigates, or the Littoral Combat Ship and DDG 1000 classes, without significant radar development costs,” a Raytheon written statement said.
The new radar uses a chemical compound semi-conductor technology called Gallium Nitride which can amplify high-power signals at microwave frequencies; it enables better detection of objects at greater distances when compared with existing commonly used materials such as Gallium Arsenide, Raytheon officials explained.
Raytheon engineers tell Warrior that Gallium Nitride is designed to be extremely efficient and use a powerful aperture in a smaller size to fit on a DDG 51 destroyer with reduced weight and reduced power consumption. Gallium Nitride has a much higher break down voltage so it is capable of much higher power densities, Raytheon developers said.
This article originally appeared on Warrior Maven in February 2018.
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