Raytheon’s APG-79 AESA Radars

The AN/APG-79 Active Electronically Scanned Array (AESA) radar began life as a replacement. Initial F/A-18 E/F Super Hornet production batches installed Raytheon’s all-weather, multimode AN/APG-73, but the APG-79 has intrinsic technical features that offered revolutionary increases in capability, reliability, image resolution, and range.

Unlike the APG-73 that equipped the first Super Hornets, the APG-79’s AESA array is composed of numerous solid-state transmit and receive modules that are fixed in place, eliminating a common cause of breakdowns. To move their beams, they rely on electronic changes in each module’s transmissions, creating useful interference patterns in order to aim, focus and shape their output. Other system components include an advanced receiver/exciter, ruggedized commercial-off-the-shelf (COTS) processor, and power supplies. With its open systems architecture and compact COTS parts, it changes what both aircrews and maintenance staff can do with a fighter radar – and does so in a smaller, lighter package.

AMRAAM: Deploying & Developing America’s Medium-Range Air-Air Missile

Raytheon’s AIM-120 Advanced, Medium-Range Air to Air Missile (AMRAAM) has become the world market leader for medium range air-to-air missiles, and is also beginning to make inroads within land-based defense systems. It was designed with the lessons of Vietnam in mind, and of local air combat exercises like ACEVAL and Red Flag. This DID FOCUS article covers successive generations of AMRAAM missiles, international contracts and key events from 2006 onward, and even some of its emerging competitors.

One of the key lessons learned from Vietnam was that a fighter would be likely to encounter multiple enemies, and would need to launch and guide several missiles at once in order to ensure its survival. This had not been possible with the AIM-7 Sparrow, a “semi-active radar homing” missile that required a constant radar lock on one target. To make matters worse, enemy fighters were capable of launching missiles of their own. Pilots who weren’t free to maneuver after launch would often be forced to “break lock,” or be killed – sometimes even by a short-range missile fired during the last phases of their enemy’s approach. Since fighters that could carry radar-guided missiles like the AIM-7 tended to be larger and more expensive, and the Soviets were known to have far more fighters overall, this was not a good trade.

The C-130J: New Hercules & Old Bottlenecks

The C-130 Hercules remains one of the longest-running aerospace manufacturing programs of all time. Since 1956, over 40 models and variants have served as the tactical airlift backbone for over 50 nations. The C-130J looks similar, but the number of changes almost makes it a new aircraft. Those changes also created issues; the program has been the focus of a great deal of controversy in America – and even of a full program restructuring in 2006. Some early concerns from critics were put to rest when the C-130J demonstrated in-theater performance on the front lines that was a major improvement over its C-130E/H predecessors. A valid follow-on question might be: does it break the bottleneck limitations that have hobbled a number of multi-billion dollar US Army vehicle development programs?

C-130J customers now include Australia, Britain, Canada, Denmark, India, Israel, Iraq, Italy, Kuwait, Norway, Oman, Qatar, Saudi Arabia, South Korea, Tunisia, and the United States. American C-130J purchases are taking place under both annual budgets and supplemental wartime funding, in order to replace tactical transport and special forces fleets that are flying old aircraft and in dire need of major repairs. This DID FOCUS Article describes the C-130J, examines the bottleneck issue, covers global developments for the C-130J program, and looks at present and emerging competitors.

JLTV: Oshkosh Wins, Lockheed Protests

In an age of non-linear warfare, where front lines are nebulous at best and non-existent at worst, one of the biggest casualties is… the concept of unprotected rear echelon vehicles, designed with the idea that they’d never see serious combat. That imperative is being driven home on 2 fronts. One front is operational. The other front is buying trends.

These trends, and their design imperatives, found their way into the USA’s Joint Light Tactical Vehicle (JLTV) program, which aims to replace many of the US military’s 120,000 or so Humvees. The US military’s goal is a 7-10 ton vehicle that’s lighter than its MRAPs and easier to transport aboard ship, while offering substantially better protection ad durability than existing up-armored Humvees. They’d also like a vehicle that can address front-line issues like power generation, in order to recharge all of the batteries troops require for electronic gadgets like night sights, GPS devices, etc.

DID’s FOCUS articles offer in-depth, updated looks at significant military programs of record. JLTV certainly qualifies, and recent budget planning endorsements have solidifed a future that was looking shaky. Now, can the Army’s program deliver?

New Nukes: Britain’s Next-Gen Nuclear Missile Submarines

“We are committed to working towards a safer world in which there is no requirement for nuclear weapons… However, the continuing risk from the proliferation of nuclear weapons, and the certainty that a number of other countries will retain substantial nuclear arsenals, mean that our minimum nuclear deterrent capability, currently represented by Trident, is likely to remain a necessary element of our security.”     — UK SDSR, 1998

Britain has a big decision to make: do they remain a nuclear weapons power, or not? In an age of collapsing public finances and an uncertain long-term economic future, the money needed to design new nuclear missile submarines is a huge cost commitment that could crowd out other needs. Then again, in an age of collapsing non-proliferation frameworks, clear hostility from ideologies that want nuclear weapons, and allies who are less capable and dependable, the downside of renouncing nuclear weapons is a huge risk commitment. Pick one, or the other. There is no free lunch.

This article covers that momentous decision for Britain, and the contracts and debates associated with it.

Australia’s Submarine Program in the Dock

News reports from Japan indicate that country is suggesting to Australia that they go in together to build a new series of non-nuclear submarines, hoping to finalize a deal before the end of the year. The Australian DOD would confirm only that they are indeed talking to several countries about cooperating on a new series. The previous Australian government (Labor) had promised 12 new keels, but the sitting government put those plans into a study phase, concerned that doing so would result in an availability gap between the new subs and the existing Collins class boats.

The January 2010 failure of a generator aboard HMAS Farncomb was just the latest in a long history of problems faced by its fleet of 6 Collins Class diesel-electric submarines – which have sometimes been reduced to just 1 operational vessel. That readiness issue presents an immediate financial headache for Australia’s government, and adds a longer-term challenge to the centerpiece of Australia’s future naval force.

With just 6 submarines in its fleet, Australia’s current deployment set-up leaves little room for error. Even a normal setup of 2 in maintenance, 2 for training but available if needed, and 2 on operations makes for a thin line, given Australia’s long coastline and sea lanes. Almost 15 years after the first Collins Class boat was delivered, they are still short of this goal. When crewing problems are added to the mechanical issues, the failings of its current fleet are creating sharp questions about the Australia’s 2009 White Paper plan to build 12 new diesel-electric fast attack submarines, as the future centerpiece of the 2030 Australian Navy.

Airbus’ A400M Aerial Transport: Delays, Development, and Deployment

Airbus’ A400M is a EUR 20+ billion program that aims to repeat Airbus’ civilian successes in the full size military transport market. A series of smart design decisions were made around capacity (35-37 tonnes/ 38-40 US tons, large enough for survivable armored vehicles), extensive use of modern materials, multi-role capability as a refueling tanker, and a multinational industrial program; all of which leave the aircraft well positioned to take overall market share from Lockheed Martin’s C-130 Hercules. If the USA’s C-17 is allowed to go out of production, the A400M would also have a strong position in the strategic transport market, with only Russian AN-70, IL-76 and AN-124 aircraft as competition.

Airbus’ biggest program issue, by far, has been funding for a project that is more than EUR 7 billion over budget. The next biggest issue is timing, as a combination of A400M delays and Lockheed’s strong push for its C-130J Super Hercules narrow the field for future exports. This DID Spotlight article covers the latest developments, as the A400M Atlas moves into the delivery phase. Will Airbus’ 3rd big issue become its own customers?

The USA’s Spearhead-class, expeditionary fast transports

When moving whole units, shipping is always the cheaper, higher-capacity option. Slow speed and port access are the big issues, but what if ship transit times could be cut sharply, and full-service ports weren’t necessary? After Australia led the way by using what amounted to fast car ferries for military operations, the US Army and Navy decided to give it a go. Both services leased Incat TSV/HSV wave-piercing catamaran ship designs, while the Marines’ charged ahead with very successful use of Austal’s Westpac Express high-speed catamaran. These Australian-designed ships all give commanders the ability to roll on a company with full gear and equipment (or roll on a full infantry battalion if used only as a troop transport), haul it intra-theater distances at 38 knots, then move their shallow draft safely into austere ports to roll them off.

Their successful use, and continued success on operations, attracted favorable comment and notice from all services. So favorable that the experiments have led to a $3+ billion program called the Joint High Speed Vessel. These designs may even have uses beyond simple ferrying and transport.

The F-22 Raptor: Program & Events

The 5th-generation F-22A Raptor fighter program has been the subject of fierce controversy, with advocates and detractors aplenty. On the one hand, the aircraft offers full stealth, revolutionary radar and sensor capabilities, dual air-air and air-ground SEAD (Suppression of Enemy Air Defenses) excellence, the ability to cruise above Mach 1 without afterburners, thrust-vectoring super-maneuverability… and a ridiculously lopsided kill record in exercises against the best American fighters. On the other hand, critics charged that it was too expensive, too limited, and cripples the USAF’s overall force structure.

Meanwhile, close American allies like Australia, Japan and Israel, and other allies like Korea, were pressing the USA to abandon its “no export” policy. Most already fly F-15s, but several were interested in an export version of the F-22 in order to help them deal with advanced – and advancing – Russian-designed aircraft, air-to-air missiles, and surface-to-air missile systems. That would have broadened the F-22 fleet in several important ways, but the US political system would not or could not respond.

This DID FOCUS Article tracks continuing maintenance and fleet upgrade programs, contracts, and timely news. A separate public-access feature offers a profile of the USAF’s most advanced fighter, and covers both sides of the F-22 Raptor program’s controversies.

NH90: Europe’s Medium Helicopter Gets New Order Despite Issues

The NH90 emerged from a requirement that created a NATO helicopter development and procurement agency in 1992 and, at almost the same time, established NH Industries (62.5% EADS Eurocopter, 32.5% AgustaWestland, and 5% Stork Fokker) to build the hardware. The NATO Frigate Helicopter was originally developed to fit between light naval helicopters like AW’s Lynx or Eurocopter’s Panther, and medium-heavy naval helicopters like the European EH101. A quick look at the NFH design showed definite possibilities as a troop transport helicopter, however, and soon the NH90 project had branched into 2 versions, with more to follow.

The nearest equivalent would be Sikorsky’s popular H-60 Seahawk/ Black Hawk family, but the NH90 includes a set of innovative features that give it some distinguishing selling points. Its combination of corrosion-proofing, lower maintenance, greater troop or load capacity, and the flexibility offered by that rear ramp have made the NH90 a popular global competitor.

As many business people discover the hard way, however, success can be almost as dangerous as failure. NH Industries has had great difficulty ramping up production fast enough to meet promised deliveries, which has left several buyers upset. Certification and acceptance have also been slow, with very few NH90s in service over a decade after the first contracts were signed. Booked orders have actually been sliding backward over the last year, and currently stand at around 500 machines, on behalf of 14 nations.