A-RCI is a sonar system upgrade installed on the USA’s entire submarine fleet, including SSN-688 Los Angeles & SSN-688I Improved Los Angeles Class, SSN-21 Seawolf Class, SSN-744 Virginia Class, SSBN-726 Ohio Class nuclear missile boats, and the new SSGN Tactical Trident special ops and strike subs.

DID’s Spotlight on A-RCI adds a bit more explanation of exactly what the program entails and where its benefits were focused, as well as covers contracts placed under the A-RCI program from FY 2005 onward. The program’s concept is simple: you can upgrade the system, without changing the sensors. By sharply upgrading ship sensor processing, it integrates and improves the boat’s towed array, hull array and sphere array sonars, running more advanced algorithms and providing a fuller “picture” of the surrounding environment. Sometimes, it really is all about what you can do with it. A-RCI’s open architecture concept also make it easier to integrate additional sensors, providing a dual-track improvement option for American submarines.

• A-RCI: Specifics & Benefits
• A-RCI: FY 2005-2010 Contracts [updated]
  
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P-8A: Sonobuoy drop
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Contract to deliver 7,500 AN/SSQ-101A sonobuoys. (March 3/10)

Sonobuoys are used to detect and identify moving underwater objects by either listening for the sounds produced by propellers and machinery (passive detection), or by bouncing a sonar “ping” off the surface of a submarine (active detection). They usually float, or have at least some part of them that does. Specialized sonobuoys can also detect electric fields, magnetic anomalies, and bioluminescence (light emitted by microscopic organisms disturbed by a passing submarine); as well as measuring environmental parameters like water temperature versus depth, air temperature, barometric pressure, and wave height.

Sonobuoys are generally dropped from aircraft or helicopters that are equipped with a means to launch them, and electronic equipment to receive and process data sent by the sonobuoy. They can also be launched from ships. This entry will discuss some of the new sonobuoys in use, and cover related contracts…

• Sonobuoy Types
• Contracts & Key Events, 2006 – Present [updated]
  
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Towed arrays create a longer baseline than other types of underwater sensors, which enhances detection capabilities. According to the 2002 edition of the US Navy’s Vision…Presence…Power: A Guide to U.S. Navy Programs, the TB-29A is a commercial-off-the-shelf (COTS) version of the legacy TB-29 towed array:

”[The TB-29A] arrays will be used for back-fit on Los Angeles (SSN-688 and SSN-688I) and Seawolf (SSN-21) submarines and forward-fit on the Virginia (SSN-774) class. TB-29A will also be used for the SURTASS [Surveillance Towed Array Sensor System] Twin-line towed array system. It will provide greater capability than the current TB-23 Thin Line towed arrays and achieve enhanced supportability through commonality. TB-29A uses COTS telemetry to significantly reduce unit cost while maintaining superior array performance. These arrays were recently tested with SURTASS ships and will support the IUSS [Integrated Undersea Surveillance System] community….Coupled with the submarine A-RCI system, TB-29A arrays are expected to provide the same 400-500 percent increase in detection capability against quiet submerged platforms in blue-water and shallow-water areas, as the current TB-29 has demonstrated recently.”

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MH-53E & Mk-105 sled
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The US Navy currently uses large CH-53/MH-53 helicopters and towed sleds to help with mine clearance work, but they hope to replace those old systems with something smaller and newer. In an era where the threat of mines is arguably rising, while new minehunter ship classes like the Ospreys are being retired by the US Navy and sold, AMCM is a critical program.

The smaller MH-60S helicopter’s Airborne Mine Counter-Measures (AMCM) system adds an operator’s station to the helicopter cabin, additional internal fuel stores, and towing capability, accompanied by a suite of carried systems that can be mixed and matched. AMCM is actually 5 different air, surface and sub-surface mine countermeasures systems, all deployed and integrated together in the helicopter.

• Airborne Mine Counter-Measures (AMCM): The Set
• Contracts & Key Events, 2000 – Present
• Additional Readings
  
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AQS-24 loading, MH-53E
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Feb 25/10: Northrop Grumman Systems Corp. in Annapolis, MD received a $49.1 million cost-plus-fixed-fee, indefinite-delivery/ indefinite-quantity contract for services and materials for depot level repair and maintenance of AMCM systems including the high-speed, high-resolution AN/AQS-14A side-scan sonar; AN/AQS-24 mine hunting system; AN/ALQ-141 acoustic minehunting/ minesweeping system; CP-2614/T common post mission analysis; and USM-668 intermediate level test equipment and swivel slip-ring assembly.

All of these systems are used by the US Navy’s MH-53E Sea Dragon mine hunting helicopters. With tensions rising around critical global shipping chokepoints, the USN’s new Osprey Class minehunters retired early and sold to other countries, its Littoral Combat Ship program late, and its associated MH-60S AMCM systems still a years away from full deployment, the MH-53Es and their gear are extremely important to the US Navy.

Work will be performed in Panama City, FL, and is expected to be complete by February 2015. Contract funds in the amount of $100,000 will expire at the end of the current fiscal year, on Sept 30/10. This contract was not competitively procured by The Naval Surface Warfare Center, Panama City Division in Panama City, FL (N61331-10-D-0009).

Submarines with improving stealth and attack capability – particularly modern diesel attack submarines – are proliferating worldwide. Locating these relatively inexpensive but extremely quiet boats presents a challenge to the US Navy, then Chief of Naval Operations Adm. Michael Mullen warned Congress in 2007 testimony [pdf].

To counter this threat, the Navy is investigating a distributed and netted approach to anti-submarine warfare (ASW). Among the ASW programs the Navy is considering is the Reliable Acoustic Path Vertical Line Array (RAPVLA). The RAPVLA is a deep water, bottom-mounted, high-grain sensor system that can automatically detect, classify, localize, track and report contacts of interest, such as stealth submarines.

Lockheed Martin recently received a $7 million order for applied research in support of the RAPVLA program…

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General Dynamics Team
Trimaran LCS Design
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New RFP provokes questions, sonar solicitation, “water wings” for LCS 1. (Feb 25/10)

Exploit simplicity, numbers, the pace of technology development in electronics and robotics, and fast reconfiguration. That was the US Navy’s idea for the low-end backbone of its future surface combatant fleet. Inspired by successful experiments like Denmark’s Standard Flex ships, the US Navy’s $30+ billion “Littoral Combat Ship” program was intended to create a new generation of affordable surface combatants that could operate in dangerous shallow and near-shore environments, while remaining affordable and capable throughout their lifetimes.

It hasn’t worked that way. In practice, what the Navy wanted, the capabilities needed to perform primary naval missions, and what could be delivered for the sums available, have proven nearly irreconcilable. The LCS program has changed its fundamental acquisition plan several times since 2005, and canceled contracts with both competing teams, without escaping any of its fundamental issues. This public-access FOCUS article offer a wealth of research material, alongside looks at the LCS program’s designs, industry teams procurement plans, military controversies, and contracts.

• LCS: Concept & Needs
• LCS: The Competing Teams
• LCS Solution = Standard Equipment + Mission Modules
• LCS: Controversies & Cautions
• LCS: Budgets and Program Structure [updated]
• LCS: Export Potential
• LCS: Contracts & Key Events [updated]
• LCS Ancillaries: Mission Module & Weapon Contracts & Key Events
• Additional Readings & Sources [updated]
  
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Northrop Grumman’s Sperry Marine business unit in Charlottesville, VA received a $10.9 million modification to a previously awarded contract (N65540-06-D-0009) for engineering and technical services and equipment in support of Sperry Marine-manufactured integrated bridge systems and steering/ ship control systems installed on US Navy vessels and at land-based test facilities.

The work will involve analysis, repair, alteration, maintenance, and production improvement on existing integrated bridge systems and steering/ ship control systems…

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OM Group in Cleveland, OH agreed to acquire EaglePicher Technologies, a Joplin, MO-based manufacturer of batteries, battery management systems and energetic devices for the defense, aerospace, and medical industries, from EaglePicher Corp. for $171.9 million.

In fiscal year 2009, EaglePicher recorded revenues of approximately $125 million, of which approximately 60% came from its defense business, approximately 31% from its aerospace business, and the balance from its medical and other businesses…

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MH-60S w. AQS-20
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Advances made in American mine detection technologies during the mid 2000s included the AQS-20A mine detecting sonar array and airborne laser systems mounted to MH-60S helicopters. All of this is in the service of the USA’s new naval emphasis on littoral warfare and accompanying doctrinal changes. So, what’s the AN/AQS-20? And how is it also related to a new US ship class, not to mention a new undersea robot?

• The AN/AQS-20, AMCM, and Future Fleet Capabilities
• AQS-20 Contracts & Key Events [different article]
  
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