Abrams, Stryker and Bradley to get active RPG protection
The Army is fast-tracking an emerging technology for Abrams tanks designed to give combat vehicles an opportunity identify, track and destroy approaching enemy rocket-propelled grenades in a matter of milliseconds, service officials said.
Called Active Protection Systems, or APS, the technology uses sensors and radar, computer processing, fire control technology and interceptors to find, target and knock down or intercept incoming enemy fire such as RPGs and Anti-Tank Guided Missiles, or ATGMs. Systems of this kind have been in development for many years, however the rapid technological progress of enemy tank rounds, missiles and RPGs is leading the Army to more rapidly test and develop APS for its fleet of Abrams tanks.
“The Army is looking at a range of domestically produced and allied international solutions from companies participating in the Army’s Modular Active Protection Systems (MAPS) program,” an Army official told Scout Warrior.
The idea is to arm armored combat vehicles and tactical wheeled vehicles with additional protective technology to secure platforms and soldiers from enemy fire; vehicles slated for use of APS systems are infantry fighting vehicles such as Bradleys along with Stykers, Abrams tanks and even tactical vehicles such as transport trucks and the emerging Humvee replacement, the Joint Light Tactical Vehicle.
“The Army’s expedited APS effort is being managed by a coordinated team of Tank Automotive Research, Development & Engineering Center engineers, acquisition professionals, and industry; and is intended to assess current APS state-of-the art by installing and characterizing some existing non-developmental APS systems on Army combat vehicles,” the Army official said.
General Dynamics Land Systems, maker of Abrams tanks, is working with the Army to better integrate APS into the subsystems of the Abrams tank, as opposed to merely using an applique system, Mike Peck, Business Development Manager, General Dynamics Land Systems, told Scout Warrior in an interview.
Peck said General Dynamics plans to test an APS system called Trophy on the Abrams tank next year.
Being engineered as among the most survivable and heavily armored vehicles in existence, the Abrams tank is built to withstand a high degree of enemy fire, such some enemy tank rounds, RPGs, rockets and missiles. Abrams tanks can also carry reactive armor, material used to explode incoming enemy fire in a matter that protects the chassis and crew of the vehicle itself. However, depending upon the range, speed and impact location of enemy fire, there are some weapons which still pose a substantial threat to Abrams tanks. Therefore, having an APS system which could knock out enemy rounds before they hit the tank, without question, adds an additional layer of protection for the tank and crew. A particular threat area for Abrams tanks is the need the possibility of having enemy rounds hit its ammunition compartment, thereby causing a damaging secondary explosion.
APS on Abrams tanks, quite naturally, is the kind of protective technology which could help US Army tanks in tank-on-tank mechanized warfare against near-peer adversary tanks, such as a high-tech Russian T-14 Armata tank. According to a report in The National Interest from Dave Majumdar (Click Here for Story), Russian T-14s are engineered with an unmanned turret, reactive armor and Active Protection Systems.
A challenge with the technology is to develop the proper protocol or tactics, techniques and procedures such that soldiers walking in proximity to a vehicle are not vulnerable to shrapnel, debris or fragments from the explosion between an interceptor and approaching enemy fire.
“The expedited activity will inform future decisions and trade-space for the Army’s overarching APS strategy which uses the MAPS program to develop a modular capability that can be integrated on any platform,” the Army official said.
Rafael’s Trophy system, Artis Corporation’s Iron Curtain, Israeli Military Industry’s Iron Fist, UBT/Rheinmetall’s ADS system, and others.
DRS Technologies and Israeli-based Rafael Advanced Defense Systems are asking the U.S. Army to consider acquiring their recently combat-tested Trophy Active Protection System, a vehicle-mounted technology engineered to instantly locate and destroy incoming enemy fire.
Using a 360-degree radar, processor and on-board computer, Trophy is designed to locate, track and destroy approaching fire coming from a range of weapons such as Anti-Tank-Guided-Missiles, or ATGMs, or Rocket Propelled Grenades, or RPGs.
The interceptor consists of a series of small, shaped charges attached to a gimbal on top of the vehicle. The small explosives are sent to a precise point in space to intercept and destroy the approaching round, he added.
Radar scans the entire perimeter of the platform out to a known range. When a threat penetrates that range, the system then detects and classifies that threat and tells the on-board computer which determines the optical kill point in space, a DRS official said.
Trophy was recently deployed in combat in Gaza on Israeli Defense Forces’ Merkava tanks. A brigade’s worth of tanks used Trophy to destroy approaching enemy fire such as RPGs in a high-clutter urban environment, he added.
“Dozens of threats were launched at these platforms, many of which would have been lethal to these vehicles. Trophy engaged those threats and defeated them in all cases with no collateral injury and no danger to the dismounts and no false engagement,” the DRS official said.
While the Trophy system was primarily designed to track and destroy approaching enemy fire, it also provides the additional benefit of locating the position of an enemy shooter.
“Trophy will not only knock an RPG out of the sky but it will also calculate the shooter’s location. It will enable what we call slew-to-cue. At the same time that the system is defeating the threat that is coming at it, it will enable the main gun or sensor or weapons station to vector with sights to where the threat came from and engage, identify or call in fire. At very least you will get an early warning to enable you to take some kind of action,” the DRS official explained. “I am no longer on the defensive with Trophy. Israeli commanders will tell you ‘I am taking the fight to the enemy.’
The Israelis developed Trophy upon realizing that tanks could not simply be given more armor without greatly minimizing their maneuverability and deployability, DRS officials said.
Trophy APS was selected by the Israel Defense Forces as the Active Protection System designed to protect the Namer heavy infantry fighting vehicle.
Artis Corporation’s Iron Curtain
A Virginia-based defense firm known as Artis, developer of the Iron Curtain APS system, uses two independent sensors, radar and optical, along with high-speed computing and counter munitions to detect and intercept approaching fire, according to multiple reports.
Iron Curtain began in 2005 with the Pentagon’s research arm known as DARPA; the APS system is engineered to defeat enemy fire at extremely close ranges.
The systems developers and multiple reports – such as an account from Defense Review — say that Iron Curtain defeats threats inches from their target, which separates the system from many others which intercept threats several meters out. The aim is to engineer a dependable system with minimal risk of collateral damage to dismounted troops or civilians.
The Defense Review report also says that Iron Curtain’s sensors can target destroy approaching RPG fire to within one-meter of accuracy.
Iron Curtain’s radar was developed by the Mustang Technology Group in Plano, Texas.
“Iron Curtain has already been successfully demonstrated in the field. They installed the system on an up-armored HMMWV (Humvee), and Iron Curtain protected the vehicle against an RPG. Apparently, the countermeasure deflagrates the RPG’s warhead without detonating it, leaving the “dudded” RPG fragments to just bounce off the vehicle’s side. Iron Curtain is supposed to be low weight and low cost, with a minimal false alarm rate and minimal internal footprint,” the Defense Review report states.
Israel’s IRON FIST
Israel’s IMISystems has also developed an APS system which uses a multi-sensor early warning system with both infrared and radar sensors.
“Electro-optical jammers, Instantaneous smoke screens and, if necessary, an interceptor-based hard kill Active Protection System,” IMISystems officials state.
IRON FIST capability demonstrators underwent full end-to-end interception tests, against all threat types, operating on the move and in urban scenarios. These tests included both heavy and lightly armored vehicles.
“In these installations, IRON FIST proved highly effective, with its wide angle protection, minimal weight penalty and modest integration requirements,” company officials said.
UBT/Rheinmetall’s Active Defense System
German defense firms called Rheinmetall and IBD Deisenroth, Germany, joined forces to develop active vehicle protection systems; Rheinmetall AG owns a 74% share, with the remainder held by IBD Deisenroth GmbH.
Described as a system which operates on the “hard kill” principle, the ADS is engineered for vehicles of every weight class; it purports to defend against light antitank weapons, guided missiles and certain improvised explosive devices (IEDs).
“The sensor system detects an incoming projectile as it draws close to the vehicle, e.g. a shaped charge or antitank missile. Then, in a matter of microseconds, the system activates a protection sector, applying directed pyrotechnic energy to destroy the projectile in the immediate vicinity of the vehicle. Owing to its downward trajectory, ADS minimizes collateral damage in the zone surrounding the vehicle,” the company’s website states.
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