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UV is a form of radiation generated by atomic transitions in chemical reactions such as those present in the Sun and in man-made equipment s...

Tuesday, November 22, 2011

Taiwan AWACS Enhanced

Taiwan AWACS Enhanced

November 20, 2011: Taiwan is sending another two of its E-2T AWACS aircraft to the U.S. for upgrading to the E-2C 2000 standard. Two Taiwanese E-2Ts were sent last year. The upgrade will cost about $63 million per aircraft.

The E-2T is very similar to the E-2C. Meanwhile, it was only last year that the U.S. Navy received its first E-2D aircraft. This is the latest version of the E-2 Hawkeye radar aircraft that was originally introduced in 1964. The two engine, 24 ton E-2 was never produced in large quantities (fewer than a hundred are in use). Four years ago, the E-2 fleet reached a milestone, of a million flight hours.

The current E-2C models began entering service in the 1970s and are difficult to maintain because of their age. The E-2s always contained a large quantity of the most modern, and failure prone, electronics. Operating mostly off carriers, and thus constantly exposed to corrosive, salty ocean air, the aircraft takes a beating. The five man crew is mostly concerned with using the large radar carried atop the aircraft, and keeping track of friendly, and hostile, aircraft and missiles at up to 400 kilometers distance.

The aircraft can stay in the air for 4-6 hours at a time, and cruises at 450 kilometers an hour. Currently, the three "system operators" use large flat screen displays and many gigabytes of disk storage each (for capturing and comparing data) to operate as a sea-going AWACS. It was the navy that developed the AWACS concept at the end of World War II, using Avenger light bombers, equipped with radar, to control large carrier strikes.

Each American aircraft carrier has four E-2s, and the U.S. Navy has a total fleet of about 70 E-2s. There are several dozen in service in other countries, but only France operates them from carriers. Everyone else uses land based E-2s. About half the E-2s ever built are still flying, and the United States expects to keep using them (as the E-2D) into the 2020s. After that, an unmanned aircraft will probably replace the E-2.

The E-2C 2000 entered service eight years ago, as an interim upgrade before the E-2D (with new engines, new phased array radar, new electronics and many other improvements) arrived. Development and manufacturing of 75 E-2Ds for the U.S. Navy cost about $206 million per aircraft. The E-2D has longer range, and more accurate radar as well as much more efficient and reliable computer systems. Many of the current E-2Cs will get some of the electronics improvements, depending on how much money is available. The first carrier to be equipped with E-2Ds won't happen for another 2-3 years. In the meantime, individual E-2Ds will operate from carriers to work out any remaining bugs and unforeseen problems.

Sunday, November 20, 2011

Apache Enters The Block III Era

Apache Enters The Block III Era

November 12, 2011: The U.S. Army has received the first of 51 "low rate initial production" Block III models of the AH-64 Apache helicopter gunship. This is the newest version of the AH-64, and had its first flight three years ago. The U.S. Army will be upgrading all of its 634 AH-64s to the new Block III standard, a process that won't be completed until 2020. The first Block IIIs are entering service now, and will be heavily used to reveal any design or manufacturing flaws. These will be fixed before mass production and conversion begins. 

Block III has a lot of improvements. One of the notable ones is a more powerful and fuel efficient engine, as well as much improved electronics. Block III will also have Internet like capabilities with other aircraft and ground troops. Block III will be able to control several UAVs, and launch missiles at targets spotted by its UAVs. The Block III radar will have longer range and onboard computers will be much more powerful. The electronics will be easier to upgrade and maintain. The combination of improved fire control and Internet capabilities is expected to greatly increase the capabilities of the AH-64.

The 7.5 ton AH-64D carries a pilot and a weapons officer, as well as up to 16 Hellfire missiles (plus the 30mm automatic cannon). Sorties average three hours. The AH-64 can operate at night and has a top speed of 260 kilometers an hour.

In addition to the U.S. Army, the Block III is also being bought by the UAE (United Arab Emirates) which is buying 60. Neighboring Saudi Arabia recently ordered 70 of the same model, as well as upgrades for its existing twelve AH-64s, to the Block III standard. Many other of the existing 1,100 AH-64s may be upgraded as well.

 

Wednesday, November 16, 2011

Slow, Sloppy and Stubborn

November 10, 2011: India's submarine fleet is dying of old age, and new boats are not going to arrive in time. It's not like this was a surprise, but the Indian defense procurement bureaucracy has long been noted as slow, sloppy and stubborn, especially in the face of demands that it speed up. The twisted tale of the tardy submarines is particularly painful.

The plan was to have a dozen new subs in service by the end of the decade. At present, there will be (with a bit of luck) six of them in service by then. The other six might arrive five years later. It's hard to say, because the manufacturer of the second six has not been selected yet. The defense procurement nabobs speak of "fast track" for this project, but long-time observers of these officials are not expecting speed.

India's effort to build the first six subs (French Scorpenes), under license, has been delayed several times, and the price has gone up to $5 billion ($834 million each). While this effort will leave India with thousands of workers and specialists experienced in building modern submarines, all that will be wasted because the defense procurement bureaucrats seem to have learned nothing. These officials already caused numerous delays, and cost overruns, during negotiations to build the Scorpene diesel-electric submarines. The bureaucrats mismanaged this deal to the extent that it is nearly three years behind schedule. But it is even more behind schedule if you count the several years the Indian bureaucrats delayed it even getting started. The delays and mismanagement have so far increased the cost of the $4 billion project by 25 percent. The first Scorpene is supposed to enter service in 2015 years, with one a year after that until all six are delivered.

There's some urgency to all this, because by next year, five of India's 16 subs (10 Kilo and two Foxtrot class Russian built boats and four German Type 209s) will be retired (some are already semi-retired because of age and infirmity). Two years after that, India will only have five working subs. India believes it needs at least 18 non-nuclear subs in service to deal with Pakistan and China.

But the bureaucrats and politicians dithered for nearly a decade, and it wasn't until 2005 that India signed a deal to buy six French Scorpene class boats. The delays led to the French increasing prices on some key components, and India has had some problems in getting production going on their end. The first Scorpene was to be built in France, with the other five built in India. While some problems were expected (India has been doing license manufacturing of complex weapons for decades), the defense ministry procurement bureaucrats never ceased to amaze when it came to delaying work, or just getting in the way.

The Scorpenes are similar to the Agosta 90B subs (also French) that Pakistan recently bought. The first of the Agostas was built in France, but the other two were built in Pakistan. The Scorpenes purchase was seen as a response to the Pakistani Agostas. The Scorpene are a more recent design, the result of cooperation between French and Spanish sub builders. The Agosta is a 1,500 ton (surface displacement) diesel-electric sub with a 36 man crew and four 533mm (21 inch) torpedo tubes (with 20 torpedoes and/or anti-ship missiles carried.) The Scorpene is a little heavier (1,700 tons), has a smaller crew (32) and is a little faster. It has six 533mm torpedo tubes, and carries 18 torpedoes and/or missiles. Both models can be equipped with an AIP (air independent propulsion) system. This enables the sub to stay under longer, thus making the sub harder to find. AIP allows the sub to travel under water for more than a week, at low speed (5-10 kilometers an hour). The Pakistanis have an option to retrofit AIP in their current two Agostas.

While India was largely concerned with the Pakistani navy when the Scorpene contract was negotiated and signed, China is now seen as the primary adversary. The Chinese subs are not as effective as the Pakistani boats, both because of less advanced technology, and less well trained crews. India could use their Scorpenes to confront any Chinese attempt to expand their naval presence into the Indian Ocean. Thus the delays and cost overruns with the Scorpenes are causing quite a lot of commotion in India. But at the rate India is going, it will be nearly a decade before all six of the Scorpenes are in service. At that point, India would have about a dozen subs (including nuclear powered models under construction). China will have over 60 boats, about 20 percent of them nuclear.

Tuesday, November 15, 2011

Building The Battlefield Tablet

Building The Battlefield Tablet

November 14, 2011: The U.S. Army is developing a tablet computer for battlefield use. Because the iPad is too large to be used on the battlefield, a smaller (18cm/7 inch versus 26cm/10.1 inch) Android model is the favorite. The current plan is to add several layers of security (require fingerprint or face/voice recognition) to the existing password requirement. Battlefield tablets and cell phones also need hardware and/or software to handle the additional wireless security required. This is not a big problem, but developing and testing a system that works well enough to be useful in combat takes time.

Another problem is that troops are often wearing gloves on the battlefield. But in many cases fingerless gloves get the job done, and allow touch sensitive tablets to be used. Field tests have already found that the devices (tablets and cell phones) are quite rugged, especially if covered by the inexpensive (under $10) protective "skins" you can buy anywhere. The troops are big users of tablets, and often create job-specific software for them.

Sunday, November 6, 2011

Laser Is Cheaper Than Lead

Laser Is Cheaper Than Lead

November 1, 2011: Over the last decade, the U.S. has developed revolutionary training technology and techniques for combat shooting. First it was the use of electronic rifle ranges, and now it has expanded to outdoor versions, where troops use laser equipped rifles to shoot at 3-D popup, stationary targets or even moving vehicles and personnel. These portable Targetry Systems can easily be set up anywhere, in open or urban areas. Using laser weapons (identical to those developed in the 1980s for combat training), there is no danger to the troops or anyone else in the area.

In addition to providing a lot more weapons training, these electronic systems save a lot of money. The U.S. Marine Corps has saved over half a billion dollars in the last five years, by using indoor electronic firing ranges. IMST (Indoor Simulated Marksmanship Trainer) has cost over $200 million, but the savings in ammo, wear on weapons, and running outdoor ranges were much larger. Nearly 200,000 marines have undergone marksmanship training using IMST. Unlike the similar U.S. Army EST system, IMST is wireless. A special ammo magazine contains gas that provides realistic recoil and a wireless radio device connects the weapon to the targets displayed on the screen and records how accurately the electronic rounds were fired. Wireless systems like this also make the targetry systems possible, because an important aspect of all this is keeping track of every "shot" fired, and where it landed. This provides valuable feedback for the trainees, on what works, and what doesn't.

Devices like IMST and EST have boosted the shooting skills of troops, while reducing costs. This gives American riflemen a big battlefield advantage. In most armies, the troops rarely fire their rifles. Ammo is too expensive (given the meager military budget). When there is combat, the troops are issued bullets, which they fire very inaccurately. Against a better trained foe, this leads to quick defeat. Happens all the time. But now cash strapped armies can train their troops to be effective marksmen without spending a lot of money, by using simulators.

The U.S. Army pioneered this with their EST (Engagement Skills Trainer) 2000 system. Each of these consists of a movie theater size screen (but at ground level, not raised) with back projection target situations displayed as interactive movies. The troops use rifles, pistols and machine-guns that are actual weapons, but modified to fire "electronic bullets", and, via a thin cable, use a pneumatic system that provides recoil as well. There is a sound system to depict the sound of the weapons firing, as well as a computer controlled tracking of ammo fired, letting users know when they have to reload.

Because EST and IMST are simulators, they capture a precise record of exactly where the shooter's weapon is aimed, how well the shooter pulls the trigger, and how long it takes to find and fire at the next target. This enables instructors to much more rapidly detect problems troops are having, and correct them. Tests have shown that you can take people with no weapons experience, put them through four hours of simulator training, and take them to a rifle range, and they will be able to fire accurately enough to exceed military requirements. Studies have shown that troops trained with a simulator gain as much marksmanship skill as those using live ammo.

In addition, a simulator like this can be used for training troops in ways that are impractical using live ammo. For example, when used for "shoot/don't shoot" situations, the appropriate visuals (either an enemy soldier or a civilian) are shown on the video screen. Soldiers train in a group, positioned as they would be in a real situation. The scenario then plays out, allowing the troops to practice when they should shoot, and when they should not. Training can be for day or night scenarios, and for a wide variety of situations.

These systems are sometimes built into standard shipping containers, so they can be moved around to where they are needed. The more useful of these "sims in a box" are the "encounter" and "convoy" sims. The encounter sim puts troops in a container containing video screens on three sides that portray an encounter between troops and foreign civilians (as they would encounter on patrol or manning a checkpoint). The troops are then allowed to deal with typical problems encountered in situations like this. While not combat (although some gunfire can be introduced), it is extremely useful training for troops headed for the combat zone.

A nation like China can build EST like systems for less than $100,000. But the Chinese have traditionally spent more time training their infantry to move quietly and pay attention to camouflage. These are important combat skills, which most nations do not spend a lot of time on. But when it comes time to shoot someone, you have an edge if your troops are accurate. China has been building aircraft and vehicle simulators. Operating warplanes and tanks is very expensive, and simulators are a much cheaper way to give operators useful experience.

In the West, there has been a lot more development of non-combat simulators in the last few decades. This has pushed total worldwide simulator sales to over $8 billion a year (out of total defense sales of $1,100 billion). Operators of electronic equipment are much more effective if they have lots of experience. But actually using their radars, sonars or complex missile systems is also very expensive. So simulators provide essential experience inexpensively.

Most nations can appreciate the need to train their pilots, ship crews and electronics operators to be better at their jobs. But ground combat troops are another matter. In most nations, the army exists mainly to protect the leadership from the population. The troops tend to get frequent training for riot control. Issuing them a lot of ammo is not considered wise, as soldiers in these countries are not considered particularly reliable. So even in military affairs, political expediency trumps everything else.

Friday, November 4, 2011

Chinese Remote Weapons Stations

Chinese Remote Weapons Stations

November 2, 2011: A Chinese firm is marketing a RWS (Remote Weapon Stations). This one is similar to the light (74 kg/163 pounds) model used by the U.S. Army. The Chinese RWS is apparently not meant for vehicle use, but for facility or perimeter security. The Chinese RWS is shown mounting a light (5.8mm) machine-gun and touted for "counter-terror" missions. China is playing catch-up in this area, as Western nations have been developing RWS for decades. The Chinese have developed a vehicle mounted RWS, but is described as still in development. This RWS is armed with a 12.7mm machine-gun and two anti-aircraft missiles. While the missiles are unusual for an RWS, the control systems look familiar to Western RWS operators. The same video game features are used. China also has millions of young men with lots of video game experience.

The U.S. Army continues to improve its RWS systems. These devices allow an operator inside the vehicle to control the gun and its sensors. Among the improvements are the addition of a green laser, which can temporarily blind people, and has long been used to stop drivers who keep coming at checkpoints despite other signals to stop. Used in an RWS, it would enable the RWS operator to flash suspicious people with the blinding light, rather than opening up with the weapon. Another upgrade is the addition of cameras to the side and rear of the turret, so that the operator can quickly check for activity all around without moving the turret (which sometimes alerts an enemy that they have been spotted.) Another addition is an IR Pointer, which, at night, enables the RWS operator to put a light, visible only to those using night-vision equipment, on something suspicious, or otherwise important. The larger CROWS II RWS has also been equipped and tested with a Javelin missile launcher. The army sees RWS as a key element in the development of remotely controlled, or autonomous, armored vehicles. The Chinese RWS does not have any of these features. But some, like the green laser, could easily be added.

RWS was one of the most important (in terms of saving lives) new weapons to appear in the last decade. This now ubiquitous remote control weapon (usually a machine-gun) is seen on many vehicles (from hummers to MRAPs and tanks). The U.S. Army has bought, or plans to buy, a total of 18,000 RWS systems. The army currently has 7,600 RWS in service. An RWS turret costs, on average, about $212,000 each. The remote control gun turret has now become a standard system on American combat vehicles.

Norwegian firm Kongsberg, the major supplier, has several models of its Protec RWS, to support small, medium and large sized weapons. Now there are a lot of competitors, if only because Kongsberg can't keep up with the demand. Many of the new competitors are trying to grab niche markets. The more obvious ones are those demanding RWS that can handle larger weapons, like 25mm or 30mm autocannon. But the most interesting new development is the portable RWS. It can be mounted on a hummer, but quickly removed, and carried by two troops, and set up anywhere using a tripod. The operator can stay behind cover, while the light machine-gun, exposed to hostile fire, unflinchingly takes on the enemy. There are lots of combat situations that could make use of this lightweight RWS.

The Protec RWS is the key component of the U.S. Army CROWS (common remotely operated weapon stations). This idea of a remote control turret has been around for nearly half a century, but years of tinkering, and better technology, have made the remote control gun turret finally work effectively, dependably and affordably. This has made the RWS practical for widespread combat use. While some troops miss the greater feeling of situational awareness (especially being able to hear and smell the surroundings) you got as an old-school turret gunner, most soldiers and marines have adapted and accepted the new system. What it lacks in the smelling and hearing department, it makes up in terms of night vision and zoom. And it's a lot safer.

CROWS is a real life saver, not to mention anxiety reducer, for troops who drive through bandit country a lot, and man the turret gun. You're a target up there, and too often, the bad guys get you. Not with CROWS. The gunner is inside the vehicle, checking out the surroundings (with night vision, zoom and telephoto capabilities). CROWS also has a laser rangefinder built in, as well as a stabilizer mechanism to allow more accurate fire while the vehicle is moving. The CROWS systems (RWS, weapon and installation) cost about $260,000 each, and can mount a variety of weapons (M2 12.7mm/.50 caliber machine-gun, MK19 40-mm automatic grenade launcher, M240B 7.62mm machine-gun and M249 5.56mm squad automatic weapon). CROWS comes in several different configurations, based on weapon mounted and armor installed (light, at 74 kg/163 pounds, standard, at 136 kg/298 pounds and CROWS II, at 172 kg/379 pounds.) The heaviest version is usually used in MRAP (armored trucks) and has a better user interface, a thermal imager and sniper detection system.

The Chinese system offered for sale is more similar to Israeli use of RWS, in turrets guarding the long border with Gaza. The Chinese RWS might be pitched to the many Chinese firms setting up mines and industrial facilities in Africa and parts of Asia that are prone to criminal gangs that carry out large scale raids. Multiple RWS systems would be a deterrent to such attacks.

By the end of 2006, there were about a thousand CROWS in U.S. service. There are now nearly 8,000. Many of the enemy fighters have seen Western or Japanese films featuring killer robots, and often think that's what they are facing. The fear factor is real, and it helps. The accuracy of the fire, and uncanny speed with which the CROWS gun moves to point at a target, is due to something few officers expected; so many troops who quickly become expert RWS operators. The guys operating these systems grew up playing video games. They developed skills in operating computer systems (video games) very similar to the CROWS controls. This was important, because viewing the world around the vehicle via a vidcam is not as enlightening (although a lot safer) than having your head and chest exposed to the elements (and any firepower the enemy sends your way). But experienced video gamers are skilled at whipping that screen view around, and picking up any signs of danger.

Since many troops have years of experience with video games, they take to CROWS quickly, and very effectively. This has further frightened hostile gunmen, who are quick to attribute magical qualities to American equipment. However, many CROWS users have mixed feelings about the system, because they know that you have more awareness of your surroundings if you are actually standing with your head and shoulders outside the vehicle, manning a machine-gun. For this reason, RWS manufacturers are investigating adding more sensors (for things like sound, smell and wind direction.) But the biggest improvements have been more reliability, ease-of-use, more sensors and lower cost.