Carrier: A Guided Tour of an Aircraft Carrier
If the Super Hornet survives the budget wars, current plans have the Navy buying at least five hundred of them in the next decade. This means they will begin to replace early model F-14As when the first fleet squadron stands up and goes to sea in 2001. Meanwhile, there is advanced work on several Super Hornet derivatives, including a two-seat all-weather strike version (that would restore the lost capabilities of the A-6 Intruder) and an electronic combat version of the F/A-18F (the so-called “Electric Hornet”) that would replace the EA-6B Prowler.
The Future: Joint Strike Fighter (JSF)
Airmen and other warfighters often get testy when they hear somebody trying to sell them a “joint” project. All too often, “joint” has meant, “Let’s pretend to cooperate, so the damned bean-counters and politicians won’t slash our pet projects again.” One of the longest-running of these joint dreams has looked to find a common airframe that all the services could use to satisfy their tactical fighter and strike requirements. The newest incarnation of this dream is called the Joint Strike Fighter (JSF). The lure of potential multi-billion-dollar savings from such a program is the basis for the JSF program, which is an attempt to reverse the historic trend of escalating unit cost for combat aircraft. Taxpayer “sticker shock” at the price of aircraft like the F-22 Raptor and F/A-18E/F Super Hornet is threatening to unleash a political backlash against the entire military aerospace complex. Thus the JSF program is aiming for a flyaway cost in the $30-to-$40-million range, for the first time emphasizing affordability rather than maximum performance.
An artist’s concept of the Lockheed Martin Navy variant of the proposed Joint Strike Fighter (JSF).
LOCKHEED MARTIN, FORT WORTH
The contracting battle for JSF will pit Lockheed Martin against Boeing (newly merged with McDonnell Douglas), with the winner possibly becoming the builder of the last manned tactical aircraft of all time. With a planned buy of some two thousand aircraft, it certainly will be the most expensive combat aircraft program in history. Meanwhile, for this program to succeed, it will have to satisfy four demanding customers—the USAF, the USN, the USMC, and the British Royal Navy. To satisfy these customers, the JSF Program Office envisions a family of three closely related but not totally identical airframes.
The USAF sees JSF as a conventional, multi-role strike fighter to replace the F-16. With many foreign air forces planning to retire their F-16 fleets around 2020, there is a huge potential export market for such an aircraft. In addition, the Marine Corps needs some six hundred STOVL (Short Takeoff/ Vertical Landing) aircraft to replace both the F/A-18C/D Hornet and the AV-8B Harrier. The similar Royal Navy requirement is for just sixty STOVL aircraft to replace the FRS.2 Sea Harriers embarked on their small Invincible-class (R 05) aircraft carriers. In December of 1995, the United Kingdom signed a memorandum of understanding as a collaborative partner in developing the aircraft with the United States, and is contributing $200 million toward the program. The Royal Navy plans to replace the aging V/STOL Sea Harrier with a short-takeoff-and-vertical-landing version of the JSF.
The U.S. Navy’s requirement is for three hundred “highly survivable” (meaning “stealthy”), carrier-based strike fighters to replace early-model F/A-18’s and the last of the F-14 Tomcats. Its version of the aircraft will have a number of differences with the other variants. For instance, the landing gear will have a longer stroke and higher load capacity than the USAF and USMC versions. To help during low-speed approaches, the Navy version will have a larger wing and larger tail control surfaces than the other JSF variants. The larger wing also means increased range and payload capability for the Navy variant, with almost twice the range of an F-18C on internal fuel.
As you would expect, the internal structure of the Navy variant will be strengthened in order to handle the loads associated with catapult launches and arrested landings. There will be a carrier-suitable tailhook, though this may not have to be as strong as on previous naval aircraft, because the JSF will be powered by the same Pratt & Whitney F119-PW-100 turbofan planned for use on the USAF F-22A Raptor. This engine has a “2-Dimensional” nozzle (it will rotate in the vertical plane), which will allow it to have much lower landing approach speeds than current carrier aircraft, and may allow the next generation of carriers (CVX) to do away with catapults altogether.
The Navy’s need for survivability means that the JSF design will have a level of stealth technology comparable with the F-22 or B-2 stealth designs, which are the current gold standard in that area. All ordnance will be internally carried, and plans are for it to carry two 2,000-lb/909.1-kg-class weapons in addition to an internal gun and AAMs
Boeing and Lockheed Martin are scheduled to conduct a fly-off of their competing JSF designs in the year 2000, with a contract award the following year. The Boeing model is known as the X-32, while the Lockheed Martin design has been designated X-35. The winning entry should become operational sometime around 2010, at which time it will begin to replace the remaining F/A-18C/D aircraft in service. This is a make-or-break program for all the armed services of the United States. If it works, then the U.S. and our allies will have the pre-eminent strike fighter of the 21st century at their command.
The Future: Common Support Aircraft
While fighters and strike aircraft are important, the various support aircraft like the S-3 Viking and E-2 Hawkeye play equally vital roles in a CVW. And like fighters, they will someday have to be replaced. While this is not going to happen soon, planning for what will be known as the Common Support Aircraft (CSA) is already underway. This aircraft will take over the AEW, COD, ESM/SIGINT, and perhaps even tanker roles currently handled by no less than three different airframes. As always, funding is a problem. Right now, there is very little money available for the development of a new medium-lift airframe that could be made carrier-capable. In current-year dollars, it would probably cost something like $3 billion just to design and develop the airframe. And the price of the various mission equipment packages for each role is anybody’s guess.
An artist’s concept of an AGM-84 SLAM-ER cruise missile. The SLAM-ER is headed into production, and will be the long-range strike weapon for naval aviation into the 21st century.
BOEING MISSILE SYSTEMS
One likely way around this dilemma might involve adapting for the Navy the new V-22 Osprey tilt-rotor transport currently entering production for the USMC and USAF. A V-22-based CSA could eliminate much of the airframe development costs and allow the design of state-of-the-art mission-equipment packages. It might even replace the SH-60Rs and CH-60’s when they begin to wear out.
The Future: Bombs and Missiles
With the introduction of GPS-guided air-to-ground ordnance and improved versions of a number of older PGM systems, the era of Navy aircraft dropping and firing unguided ordnance is dead.62 In Operation Deliberate Force in Bosnia, for example, something like 70% of the weapons expended in that short but effective air campaign were PGMs. This percentage is likely to rise in future conflicts. What follows is a quick look at the programs that are important to naval aviators.
AGM-84E SLAM Expanded Response Missile
As mentioned earlier, the engineers at Boeing Missile Systems have been working on an improved version of the AGM-84E SLAM missile, which they call SLAM Expanded Response (SLAM-ER). SLAM-ER is designed to add a new generation of technology to the solid foundation laid by Harpoon and SLAM. This new missile will give the Navy a standoff strike weapon with unprecedented lethal power and accuracy. Improvements to the basic SLAM include a pair of “pop-out” wings (similar to those on the TLAM), which will give it more range (out to 150 nm/278 km) and better maneuverability. A new warhead utilizes the same kind of reactive titanium casing used on the Block III TLAM, while its nose has been modified with a new seeker window to give the seeker a better field-of-view. The guidance system of SLAM-ER incorporates a new software technology developed by Boeing and the labs at Naval Weapons Center at China Lake, California. Known as Automatic Target Acquisition (AT
A, also known as Direct Attack Munition Affordable Seeker—DAMASK), it allows the SLAM-ER seeker to automatically pick out a target from the background clutter. The seeker then “locks” it up and flies the missile to a precise hit (within three meters/ten feet of the planned aimpoint). The SLAM-ER is already in low-rate production and has passed all of its tests with flying colors. In fact, this program has become so successful that the Navy has deleted its funding for the planned Joint Air-to-Surface Standoff Missile (JASSAM), since SLAM-ER completely meets the requirements for that. Current plans have SLAM-ER entering the fleet in 1999.
A testing version of the Joint Direct Attack Munition (JDAM) guided bomb. JDAM utilizes GPS technology to guide it within just a few yards/meters of the aimpoint.
BOEING MISSILE SYSTEMS
GBU-29/30/31/32 Joint Direct Attack Munition (JDAM) Guided Bomb Family
One key limitation of the current generation of LGBs and Imaging Infrared (IIR)-guided PGMs is that they do not perform well in poor weather. Water vapor and cloud cover are the enemies of these weapons and targeting systems, and have proven to be significant roadblocks to their employment. What airpower planners need is a family of true, all-weather PGMs. Creating this is the goal of the joint USAF/USN/USMC Joint Direct Attack Munition (JDAM) program, which will go into service in 1999.
Now being developed by Boeing Missile Systems (formerly McDonnell Douglas Missile Systems), JDAM is designed to be a “strap-on” guidance kit, compatible with a variety of different bomb warheads. JDAM will be equipped with a GPS guidance system and control fins, which can fit around a conventional Mk. 83 (1,000-lb/454 kg), Mk. 84 (2,000-lb/909-kg), or BLU-109 (2,000 lb/909 kg) bomb. Since the JDAM will take its guidance from the constellation of GPS satellites in orbit around the earth, all you’ll need to designate a target will be the sixteen-digit numeric code that represents the target’s geographic location on the earth’s surface.
As currently planned, there will be four separate versions of the Phase I JDAM family. They include:
An F/A-18C Hornet armed with four AGM-154A Joint Standoff Weapons (JSOWs) during a test flight. JSOW is one of a family of precision-strike weapons guided by the NAVISTAR GPS satellite navigation system.
RAYTHEON STRIKE SYSTEMS
The majority of the JDAM acquisition will be composed of kits for the GBU-31 and -32 versions. These are sized to fit around both Mk. 83/84 general-purpose bombs, as well as BLU-109/110 penetration warheads. So far, the program is proceeding well in tests, and has proved to be quite accurate. The specified thirteen-meter/forty-three foot-accuracy (six meters/ twenty feet when the new Block IIR GPS satellites are put into service) is regularly being beaten in drop tests, and JDAM should come into service on schedule. At a price of only about $15,000 over the price of the bomb, JDAM is going to be quite a bargain. It needs to be, since current plans have the American military alone buying over 87,000 JDAM kits over the next decade or so. One intriguing question about JDAM is whether or not it will be fitted with an ATA-type seeker to enable it to hit really precise targets. While an ATA seeker would only add another $15,000 to the cost of each kit, the accuracy would narrow to less than three meters/ten feet—as good as the Paveway III LGBs in service today. I would expect that you would see an ATA-based seeker deployed on JDAM by 2003.
AGM-154 Joint Standoff Weapon (JSOW)
Well on its way into active service, the AGM-154 Joint Standoff Weapon (JSOW) is intended to be a munitions “truck” able to carry a variety of weapons and payloads.63 Designed to glide to a target with guidance from an onboard GPS/INS system, it can deliver its payload with the same accuracy as a JDAM bomb. The initial AGM-154A version is armed with BLU-97 Combined Effect Munitions (CEMs), while the -B model will carry BLU- 108 Sensor Fused Weapons (SFWs) for attacking armor and vehicles. There are also plans for a -C model for the Navy, which will have a 500-lb/226.8-kg Mk. 82/BLU-111 unitary warhead as well as a man-in-the-loop data-link system similar to that on SLAM. An ATA-type seeker may also be fitted. This weapon is now officially operational with the fleet, with six -A models forward-deployed on the USS Nimitz (CVN-68) prior to the 1997 Iraq crisis, where they almost got their combat introduction.
AIM-9X Sidewinder Air-to-Air Missile
For almost a decade, the fighter pilots of the United States have been flying with a short-range AAM that has been thoroughly outclassed by competing products from Russia, Israel, and France. Despite its past successes, the third-generation AIM-9L/M Sidewinder AAM has been passed by and is now thoroughly outclassed. Help is on the way however, in the form of a new fourth-generation Sidewinder, the AIM-9X. Built by Raytheon-Hughes Missile Systems, it will become operational in 1999. The changes in the AIM- 9X start at the seeker head, which will be a “staring” IIR array, able to detect targets at ranges beyond those of the human eye. A new guidance and control section at the rear of the missile will make it the most maneuverable AAM in the world. Reduced drag will also extend its range and “no-escape” zone for enemy target aircraft. Finally, the entire AIM-9X system will be controlled by a new helmet-mounted sighting system, which will first see service in the Super Hornet (but it will also be fitted on the Tomcat and earlier-model Hornets). This new missile will be so maneuverable that an AIM-9X can be fired at enemy aircraft that are alongside the launching aircraft!
The Real Future: Unmanned Combat Aerial Vehicles
Even as the JSF designs are being finalized and the eventual winner selected, it is important to remember that Lockheed Martin and Boeing can’t engineer out the nature of the humans that will fly it. Right now, combat aircraft require their air crews to endure dynamic forces that are nothing less than physical torture. At times these stresses can turn deadly. The rapid onset of G-forces in sharp turns literally drains the blood from pilots’ heads, causing a sudden “G-Induced Loss-of-Consciousness,” or G-LOC. This means that there is a limit to the performance engineers can put into new aircraft—the physical limitations of the human pilots.
A flight of Lockheed Martin Unmanned Combat Aerial Vehicle (UCAV) concept aircraft. Such remote-controlled aircraft will likely serve in the mid-21st century.
LOCKHEED MARTIN
With this in mind, it is likely that the generation of combat aircraft after JSF will be unmanned. Today, in roles like photo-reconnaissance and wide-area surveillance, a great deal is already being done with Unmanned Aerial Vehicles (UAVs). Back in the 1970’s there were even trials with armed drones, though the threat to pilot billets put short work to that idea. Even so, they make a lot of sense—if not today, then tomorrow. What will be known as Unmanned Combat Aerial Vehicles, or UCAVs for short, will probably start out as modified existing designs (such as leftover F-16’s or F/A-18’s) whose cockpits will be filled with sensors and data links back to the operators on the ground. In fact, a modified F/A-18C would make an excellent first-generation UCAV, since it already can conduct automatic carrier landings.
The aircraft would fly and operate conventionally, with the exception that when high-G maneuvers are needed, the 9-G limit in the flight-control software could be disabled and the UCAV flown to the actual structural limits of the design. Since we already have in service AAMs that make thirty-G turns, we could easily produce combat aircraft with performances that would make manned aircraft obsolete overnight. UCAVs would doubtless also be much cheaper than current designs, since so much of the money in a manned aircraft design goes into making it safe for the pilot and crew to operate. Keep an eye on this emerging technology. It will be exciting!
Carrier Battle Group: Putting It All Together
Aircraft Carrier Battle Groups (CVBGs) are the single most useful military force available in time of crisis or conflict. No other military unit, be it an airborne brigade or a wing of strategic bombers, gives the leadership of a nation the options and power that such a force commands. This is because the real value of CVBGs goes far beyond the simple existence of the unit and its availability for combat; CVBGs also provide presence. America’s forward-d
eployed battle groups in the Middle East and the Western Pacific are the most visible symbol of the nation’s global commitments. Because of these battle groups, our nation has a say in the affairs of nations and people who threaten our vital national interests. The commander of such a battle group bears an awesome responsibility.
Rear Admiral Jay Yakley was one of those commanders. He’s gone from flying fighters in Vietnam to commanding his own aircraft carrier battle group (CVBG), based around the USS Abraham Lincoln (CVN-72). Back in the early days of August 1990, he was the one of the point men facing down the forces of Saddam Hussein following the invasion of Kuwait. As commander of Carrier Air Wing Fourteen (CVW-14) aboard the USS Independence (CV-61), he was in charge of the first organized combat air unit to reach the region following the invasion. In this capacity, together with roughly ten thousand other Americans of the Independence CVBG, he had the job of holding the line until other reinforcements could arrive.
He did not have long to wait. Within days, Allied units began to pour in and form the core of the coalition that eventually liberated Kuwait and defeated Saddam’s forces. But for those first few days, Jay Yakley and his roughly ninety airplanes were the only credible aerial force that might have struck at Saddam’s armored columns, had they chosen to continue their advance into the oil fields and ports of northern Saudi Arabia. Only Hussein himself knows whether or not the Independence group was the deterrent that kept Saddam from invading Saudi Arabia.