Flexible G/ATORs: The USMC’s Multi-Mission AESA Ground Radars

G/ATOR diorama

The US military’s long run of unquestioned air superiority has led to shortcuts in mobile land-based air defenses, and the US Marines are no exception. A December 2005 release from Sen. Schumer’s office [D-NY] said that:

“Current radar performance does not meet operational forces requirements… consequences could potentially allow opposing forces to gain air and ground superiority in future operational areas.”

One of the programs in the works to address this gap is the AN/TPS-80 G/ATOR mobile radar system. It’s actually the result of fusing 2 programs: the Multi-Role Radar System (MRRS), and Ground Weapons Locator Radar (GWLR) requirements. When the last G/ATOR software upgrade becomes operational, it will replace and consolidate numerous legacy radars, including the AN/TPS-63 air surveillance, AN/MPQ-62 force control, AN/TPS-73 air traffic control, AN/UPS-3 air defense, and AN/TPQ-36/37 artillery tracking & locating radar systems.

USA Issues JSOW Block III Production Contracts

AGM-154C, impact

In March 2007, Raytheon received a contract to develop the AGM-154C-1 variant of the popular JSOW glide bomb family. This new version would add moving target capability via improved imaging infrared seekers, better seeker algorithms, and a 2-way Link-16 data link. That combination allows the missile to be used as a secondary weapon against enemy ships, with some capability against certain moving land targets. The 2-way link ensures that targeting commands can be received, and missile status and position transmitted back, right up to the moment of impact. Most of those options are currently found only at the high end of the cruise missile market, giving the AGM-154C-1 an interesting positioning as a cheaper short-range alternative.

That development effort was successful, and in late 2008, the US DoD gave the go-ahead for JSOW Block III, which will be integrated on US Navy F/A-18 E/F Super Hornets and on the F-35 Lightning II. Now, the JSOW Block III system is the default version under the US Navy’s full rate production contract.

Moving Target: Raytheon’s GBU-53 Small Diameter Bomb II

GBU-53/B, aka. SDB-II

The 250 pound GBU-39 Small Diameter Bomb gives American fighters the ability to carry more high-precision GPS-guided glide bombs, without sacrificing punching power against fortified targets. The initial award to Boeing was controversial, and the Darlene Druyun corruption scandal ultimately forced a re-compete of the Increment II development program. Whereas the initial GBU-39 SDB-I offered GPS-guided accuracy in a small and streamlined package, the goal of the GBU-53 SDB-II competition was a bomb that could hit moving targets in any weather, using a combination of guidance modes.

For the SDB-II competition, Boeing found itself allied with Lockheed Martin, its key opponent for the initial SDB-I contract. Its main competitor this time was Raytheon, whose SDB-II bid team found itself sharing its tri-mode seeker technology with a separate Boeing team, as they compete together for the tri-service JAGM missile award against… Lockheed Martin. So, is Raytheon’s win of the SDB-II competition also good news for its main competitor? It’s certainly good news for Raytheon, who wins a program that could be worth over $5 billion.

EFSS/ITV: The US Marines’ Mobile 120mm Mortar System

EFSS Concept

The U.S. Marine Corps sees the 120mm Expeditionary Fire Support System (EFSS) mortar as the 3rd leg of its expeditionary fire support triad. EFSS will be the short-range but easily transportable counterpart to the reduced-weight M777 155mm towed howitzer, and the truck-mounted M142 HIMARS rocket system.

Accompanying Marine Air Ground Task Forces (MAGTFs) in expeditionary operations, EFSS will be the heliborne Ship-To-Objective Maneuver (STOM) force’s primary fire support, before the larger and longer range systems can move into position. As such, the EFSS launcher, its Internally Transportable Vehicle (ITV) carrier, a portion of the basic load of ammunition, and a portion of its crew, must all be transportable by a single CH-53E Super Stallion or future CH-53K heavy lift helicopter, and/or a single MV-22 Osprey tilt-rotor aircraft. The program’s path has not been smooth, and its vehicle choice in particular has come in for criticism, as it heads toward full-rate production.

Rapid Fire Jan. 23, 2013: Get Used to Redundancy and Diversification News

• Rolls Royce intends to cut or relocate 378 defense-related jobs at its plant in Ansty, UK, or almost half its staff. This follows the confirmation by the Ministry of Defence of a third tranche of redundancies affection 5,300 Army soldiers.

• The SPEEA trade union explains [PDF] why it rejected Boeing’s latest (of many) contract proposal which the company had presented as its “best and final.” It’s all about pension schemes. Employees are to vote in a process whose outcome won’t be known until mid-February.