Skip to comments.Details Sketchy On How Tank Was Breached
Posted on 06/07/2004 9:36:51 AM PDT by mark502inf
The M1A1 Abrams tank to which Pfc. Nicholaus E. Zimmer was assigned was designed with the purpose of preserving the lives of crew members.
But Zimmer was killed when the tank came under attack Sunday from rocket-propelled grenades, which should not have been able to penetrate the tank's armor.
Details of the attack and how Zimmer, of southern Delaware County, died were sketchy yesterday.
"We know it was RPGs and he was assigned to a tank, and the tank came under attack," said Cathy Gramling, a Defense Department spokeswoman.
"But we don't know the circumstances."
Zimmer could have been struck if his body had been exposed, Gramling said. He also could have been inside the tank and died from a "percussion" injury when the grenade round hit the tank.
Zimmer's family said they were told by the Army that Zimmer likely was inside the tank when it was struck and that two others were injured.
"The No. 1 goal in designing that tank in the 1970s was survivability of the crew," said George F. Hofmann, military historian at the University of Cincinnati.
Hofmann wouldn't speculate on what caused Zimmer's death. He said an RPG7, which is typically used by Iraqi insurgents, is unlikely to penetrate an Abrams.
"If there was a penetration, then the terrorists we are dealing with have introduced a much more powerful RPG," Hofmann said. "But I am just speculating."
The tank's armor is composed of depleted uranium, which has a density 2 1/2 times greater than steel.
"It is supposed to even be able to repel any type of round that comes from another tank," said Hofmann, who served as an Army instructor and cadre in the Special Training Regiment at the U.S. Armor Training Center in Fort Knox, Ky.
He said the tank is "compartmentalized."
"If a round by chance penetrates, you have compartments that protect other crew members."
Last year there was a similar story about an unknown weapon causing a penetration of M1 tank armor in Iraq. Never heard if they figured out what caused it.
A friend of mine with a military background explained how that tank was breached last year. I won't post details here, but if I had some more information about this recent incident I might be able to tell if the two attacks had something in common.
Time for GWB to step down, I guess.
there is NOTHING 100% safe.
This is another story designed to promote ILL thoughts of the USA and the military.
welcome to the world of left-wing brainwashing techniques - aka propoganda
FYI...some type of new penetrator on these RPG's or some hypervelocity kinetic penetrator?
I never hear anybody mention the Russian Kornet, of which Syria reportedly bought 1000 in 1997 or so ... and the probability that Syrian weapons are flowing into Iraq, either directly across the immediate border or through other channels? 100%
in you view should the media only report positive stories about everything/
ping to my #7
Nicholaus was a fine young man. My boys went to Westland High School with him. When my sons and their friends heard the news of Nicholaus's death they were very sad and very proud to say they knew Nicholaus. One of my sons walked the halls with Nicholaus many times. Nicholaus was one year ahead of my sons. It is so sad.
This story isnt worth the bandwidth it takes up.
Zero details about the attack, the AOA, the exact weapon used or the nature of the deaths.
This is a waste of time.
The Kornet E, a laser guided missile with a range of 5,000 meters. The launcher has a thermal sight for use at night or in fog. The missile's warhead can penetrate 1200 mm of armor, which means that the front and side armor of the U.S. M-1 Abrams tank would be vulnerable. The missile weighs 18 pounds and the launcher 42 pounds. The system was introduced in 1994 and has been sold to India and Syria (who may have slipped a few to Iraq).
There's just not enough data here...
Which position did Zimmer have: driver/gunner/loader/TC?
Where did the round impact?
The RPG-7 anti-tank grenade launcher is one of the most common and most effective infantry weapons in contemporary conflicts. It is rugged, simple and carries a lethal punch. Whether downing US Blackhawk helicopters in Somalia, blasting Russian tanks in Chechnya, or attacking government strong points in Angola, the RPG-7 is the weapon of choice for many infantrymen and guerrillas around the world.
The RPG-7 is the lineal descendant of the World War II German Panzerfaust. It is relatively cheap, quite effective and found everywhere. The RPG-7 was adopted by the Soviet Armed Forces in 1961. Today, it is part of the TO&E of over 40 different countries' armies and several of these countries, besides Russia, are licensed to build their own.(1) Other manufacturers include Bulgaria, China, Iran, Iraq, Romania and Pakistan.
The RPG-7 is a shoulder-fired, muzzle-loaded, antitank and antipersonnel grenade launcher which launches a variety of fin-stabilized, oversized grenades from a 40mm tube. The launcher with optical sight weighs 6.9 kilograms (15.2 pounds) and has a maximum effective range of 300 meters against moving point targets and 500 meters against stationary point targets.
The maximum range for antitank grenades against area targets is 920 meters, at which point the round self-destructs after its 4.5 second flight. The antipersonnel grenades reach over 1100 meters. Among the production grenades are the PG-7, PG-7M, PG-7N, and PG-7VL antitank grenades with armor penetrability of up to 600mm of rolled homogeneous steel. The PG-7VR is a tandem warhead designed to penetrate explosive reactive armor and the armor underneath. The OG-7 and OG-7M are high-explosive antipersonnel grenades.(2)
The Soviet Army assigned one RPG-7 per motorized rifle squad.(3) Forces involved in regional conflicts tend to add more RPGs to their organizations. In the Iran-Iraq War, the Iranian 11-man squad had two RPG-7 gunners. In the Soviet-Afghan War, the Mujahideen (4) averaged one RPG for every 10-12 combatants in 1983-1985. By 1987, they were two RPG-7s for every 10-12 combatants.
The Mujahideen formed special armored-vehicle hunter-killer teams where 50 to 80% of the personnel were armed with RPG-7s. This could be up to 15 RPGs. When there weren't mortars available, these groups also used their RPG-7s as a form of pseudo-artillery and conducted RPG preparation fires.(5)
Constricted terrain (mountains, forest, jungle, and population centers) leads to close combat. When the combatants are 10-30 meters apart, artillery and air support is practically nonexistent due to the danger of fratricide. Close combat is a direct-fire brawl in which the RPG-7 excels.(6)
The Soviet -Afghan War lasted from 1979 to 1989 and pitted the local Mujahideen against the Soviet occupiers and the Afghan communist government. Afghanistan is a rugged land, full of towering mountains, vast deserts, "green zones"(7) and occasional forest. Guerrilla warfare favors the use of light infantry.
The Soviets never fielded enough light infantry to match the quality light infantry of the Mujahideen. The RPG-7 was the Mujahideen weapon of choice and they proved its value as a light-weight killer against Soviet tanks, armored personnel carriers, trucks and helicopters. The Soviets tried to stay at least 300 meters away from the Mujahideen--out of AK-47 Kalashinikov assault rifle and RPG- 7 moving target range.(8) The Mujahideen, on the other hand, tried to get in close and "hug" the Soviet force to escape Soviet artillery and air strikes while using their RPGs to good effect.(9)
Among the forces that the Soviets deployed to Afghanistan were two spetsnaz brigades.(10) The spetsnaz forces were not authorized RPG-7s in their TO&Es. Instead, they were issued RPG-16s or RPG-22s.(11) The RPG-16s and RPG-22s lacked the range and punch of the RPG-7, so spetsnaz troops used captured Chinese and Pakistani RPG-7s. They preferred these RPGs to the Soviet-manufactured model since they are lighter, and have a folding bipod and a convenient carrying handle. The spetsnaz found that the RPG-7 was ideal for taking out Mujahideen firing positions dug into mountain slopes. They would aim the RPG-7 to hit above and behind the firing position, showering the firing position with shrapnel and pieces of rock.(12)
The Mujahideen used the RPG antitank grenades against both vehicles and personnel. The antitank round has a lethal bursting radius of some four meters and can kill with blast and shrapnel. The Mujahideen learned that the best way to destroy a vehicle was to engage it with two or three RPGs simultaneously from a range of 20-50 meters. The chances of hitting the target with a lethal shot are greatly increased by firing a number of shots at close range. Further, the vehicle under attack has less of a chance to react to the attack.
The rebels in Tadjikistan in 1992 applied this same technique when attacking T-72 tanks equipped with reactive armor. Since they lacked the anti-reactive armor PG-7VR tandem warhead, the first gunner would hit the tank to blow a hole in the reactive armor and the second and third gunner would fire the kill shots at the exposed area. This "double-teaming" also usually took out the tank's vision blocks, so if the tank survived, it was blind allowing the RPG gunners time to reposition, reload and reengage. Another "trick of the trade" was to throw a fragmentation grenade on the T-72's front deck to take out the driver's vision block before the massed RPGs opened up on the tank. The optimum shot for the Tadjik rebels was against the rear section of the T-72 turret.
The biggest danger to the RPG gunners was infantry accompanying tanks, so they tried to take out tanks that were out of immediate infantry support range. Further, RPG gunners usually were accompanied by supporting snipers and machine gunners and an assistant RPG gunner carrying an assault rifle. These could protect the RPG gunner from enemy infantry. It was absolutely necessary, if the RPG gunners were not firing from prepared positions, that they change firing positions after every shot. This was especially true if they failed to kill their target with the first shot or the target had a supporting vehicle in overwatch. RPG gunners who were caught up in the heat of the moment and stood their ground were quickly killed.(13)
RPG-7s were especially valuable in executing an ambush. RPG positions were selected with particular care, then dug-in, reinforced and camouflaged. The area behind the firing positions were soaked for two-four meters in depth with water to prevent a tell-tale cloud of dust. The firing position was hidden within local foliage--brush, reeds, corn and tall grasses up to two meters high. It was only necessary to have a clear view of the target and an unimpeded pathway where the grenade could fly without be deflected by twigs and foliage. No matter how well camouflaged and watered-down a position, the launching signature of a RPG is unmistakable. The flash and the whitish blue-grey smoke is a clear giveaway and the surviving RPG gunner is one who quickly shifts positions or dives deep into a hole.
While the RPG was designed to kill tanks and other combat vehicles, it has brought down a number of helicopters as well. During the fighting in Mogadishu, Somalia in October 1994, the two US Army Blackhawk helicopters shot down were by the RPG. In Afghanistan, the Mujahideen found that the best anti-helicopter tactics were anti-helicopter ambushes. The first variant was to identify likely landing zones and mine them. Then the Mujahideen would position machine guns and RPGs around the landing zone. As the helicopter landed, massed RPG and machine gun fire would tear into the aircraft.(14)
If the Mujahideen could not lure helicopters into an ambush kill zone, the RPG could still engage helicopters. The Mujahideen found that a frontal shot at a range of 100 meters was optimum against an approaching helicopter.(15) As before, the more RPGs firing simultaneously, the better chance of a hit and escape from an avenging wingman.(16)
Should the helicopters be flying further away, it was better to wait until the helicopter was 700-800 meters away and then fire, trying to catch the helicopter with the explosion of the round's self-destruction at 920 meters distance. Chances of hitting a helicopter at this range by the self-destruct mechanism were very limited, but they served to discourage reconnaissance helicopters and air assault landings, particularly if a SA-7 Strela or a Stinger shoulder-fired surface-to-air missile was also firing.(17)
In December 1994, the Russian Army entered the break-away Republic of Chechnya and attempted to seize the Chechen capital of Grozny from the march. After this attempt failed, the Russian Army spent two months in deliberate house-to-house fighting before finally capturing the city.(18) During the fighting, the Russian conscript force was badly mauled by the more-mature, dedicated Chechen force. During the first month of the conflict, Russian forces wrote off 225 armored vehicles as non-repairable battle losses. This represents 10.23% of the armored vehicles initially committed to the campaign.(19) The bulk of these losses were due to shoulder-fired antitank weapons and antitank grenades.
The Chechen forces were armed with Soviet and Russian-produced weapons and most Chechen fighters had served in the Soviet Armed Forces. The Chechen lower-level combat group consisted of 15 to 20 personnel subdivided into three or four-man fighting cells. These cells had an antitank gunner (normally armed with the RPG-7 or RPG-18 shoulder-fired antitank rocket launcher), a machine gunner and a sniper.(20) Additional personnel served as ammunition bearers and assistant gunners. Chechen combat groups deployed these cells as anti-armor hunter-killer teams. The sniper and machine gunner would pin down the supporting infantry while the antitank gunner would engage the armored target. Teams deployed at ground level, in second and third stories, and in basements of buildings. Normally five or six hunter-killer teams simultaneously attacked a single armored vehicle. Kill shots were generally made against the top, rear and sides of vehicles. (See diagram 1) Chechens also dropped bottles filled with gasoline or jellied fuel on top of vehicles.(21) The Chechen hunter-killer teams tried to trap vehicle columns in city streets where destruction of the first and last vehicles will trap the column and allow its total destruction.
The elevation and depression angles of the Russian tank barrels were incapable of dealing with hunter-killer teams fighting from basements and second or third-story positions and the simultaneous attack from five or six teams negated the effectiveness of the tanks' machine guns. The Russians attached ZSU 23-4 and 2S6 track-mounted antiaircraft guns to armored columns to respond to these difficult-to-engage hunter-killer teams.(22)
The Soviets were not the only modern army to worry about the effectiveness of the RPG. South African and Namibian forces fighting Angolan guerrillas in Namibia during the 1980s learned to give the RPG a wide berth. Their standard drill, when traveling in an armored personnel carrier and encountering Angolan guerrillas with an RPG, was to immediately begin driving around the guerrillas in an ever-widening circle. They would fire into the circle with automatic weapons. The moving vehicle was harder for the guerrilla RPG gunner to hit and the soldiers were able to exploit their mobility and firepower.(23) Dismounting troops to advance on guerrillas while the stationary personnel carrier provides supporting fire is a good way to lose the carrier.
Tanks and other ground combat vehicles need to be protected against the RPG. Sandbagging and mounting reactive armor were reasonable solutions until the introduction of the anti-reactive armor PG-7VR tandem round. The best short-term solution appears to be fitting combat vehicles with a light-weight stand-off screen. When the Soviets moved through heavy vegetation in Afghanistan, they would sometimes walk a wall of high-explosive fragmentation rounds in front of the vehicles to keep the RPG gunners at bay--or at least to ruin their aim.(24) This is an expensive option in terms of artillery or mortar rounds, but it does work.
When practical, the best way to protect ground vehicles from the RPG is to put infantry well forward of the vehicles to find and destroy the RPG gunners. Combat vehicles should stay out of urban areas or areas dominated by overwatching terrain and tall trees until the infantry has cleared and posted the area. Moving under smoke or at night also helps protect ground vehicles. Convoys should have a security escort, smoke laying capability and helicopter coverage. All vehicle drivers should have several smoke grenades.(25)
There are several ways to protect helicopters from the RPG:
-Vary the take-off and landing directions from the helipads.
-Never fly a "race-track" or other identifiable pattern.
-Never follow streets, roads, canyons or river lines for any length.
-Always allow 500 meters between the helicopter and its wingman. This allows the wingman full range of his weaponry to engage RPG gunners.
-Vary the flight tactics and flying pattern, sometimes flying with two helicopters and sometimes with three.
-Prep a LZ with an over-pressure system (fuel-air) before landing.
-Use pathfinders on any LZ before committing the full landing force.
-Never set patterns by time, formation or sequence of events.(26)
The RPG-7 will be around for a good while yet. It is a proven, cheap killer of technology which will continue to play a significant role--particularly when conventional forces are pitted against irregular forces. Russian veterans are enthusiastic about the RPG-7 and have suggested that the Russians need to develop an antipersonnel round, an incendiary round, a smoke round, an illumination round and other special-purpose rounds to give the RPG-7 more flexibility in future combat. (27) US soldiers need to be aware of the RPG-7 and how it has been deployed. The chances are, whenever a US soldier is deployed to a trouble spot, the RPG-7 will be part of the local landscape.
1. Aleksandr Sykholesskiy, "Artilleriya partisan: RPG vlokal'nykh vooruzhennykh konfliktakh" [The guerrilla's artillery: The RPG in local armed conflicts], Soldatudachi [Soldier of fortune], February 1996, 42.
2. Terry J. Gander and Ian V. Hogg (editors), Jane's Infantry Weapons, Surrey: Jane's Information Group, 1995, 303-305. For a thorough discussion, see Scott C. Janzen, "The Story of the Rocket Propelled Grenade", Red Thrust Star, April 1997, 21-25 or http://leav-www.army.mil/fmso/fmso.htm.
3. I. M. Andrusenko, R.G. Dukov, and Yu. R. Fomin, Motostrelkovyv (tankovyy) vzbod v boyu [Motorized rifle (tank) platoon in combat], Moscow: Voyenizdat, 1989, 26-28.
4. Holy warrior. The Mujahideen were fighting for their homes and their Islamic faith.
5. Sykholesskiy, 42.
6. Ibid, 43.
7. The "green zone" is a fertile, agricultural region of gardens and vineyards bisected by a network of irrigation ditches and adobe walls. It is practically impassible for vehicles.
8. Ali A. Jalali and Lester W. Grau, The Other Side of the Mountain: Mujahideen Tactics in the Soviet-Afghan War, to be published in 1998, chapter 15.
9. Sykholesskiy, 43.
10. Special forces. These are a blend of long-range reconnaissance and commando forces.
11. The RPG-16 and RPG-22 are one-shot antitank weapons similar to the US LAW (light-weight antitank weapon).
12. Sykholesskiy, 43.
13. Ibid, 44.
14. A second variant of the ambush was to position heavy machine guns in caves dug into canyon walls where they could fire horizontally across the narrow canyon. They would then bait the aircraft by positioning an attractive target on the canyon floor. The bait would lure the aircraft into the canyon where multiple machine guns would open up on its flight path. Jalali and Grau.
15. Sykholesskiy, 45.
16. In the Somalia fighting, both helicopters were brought down by a tail shot by a single RPG-7. Mark Bowden, "Blackhawk Down", The Philadelphia Enquirer, http://www3.phillynews.com.
17. Sykholesskiy, 45.
18. For a discussion of changing Russian urban tactics, see Lester W. Grau, "Russian Urban Tactics: Lessons from the Battle for Grozny", Strategic Forum, Number 38, July 1995.
19. N. N. Novichkov, V. Ya. Snegovskiy, A. G. Sokolov and V. Yu. Shvarev, Rossiyskie vooruzhennye sily vchechenskom konflikte: Analiz, Itogi, Vyvody [Russian armed force in the Chechen conflict: Analysis, outcomes and conclusions], Moscow: Kholveg-Infoglob-Trivola, 1995, 138-139. For the same period of time, forward-support Russian maintenance personnel repaired 217 armored vehicles, while depot maintenance repaired another 404 armored vehicles according to Sergey Maev and Sergey Roshchin, "STO v Grozny" [Technical Maintenance Stations in Grozny], Armeyskiy sbornik [Army digest], December 1995, 58. These were not all combat-induced losses, but it seems to indicate that 846 of 2221 armored vehicles (38%) were out of action for some period of time during the two-month battle for Grozny.
20. "Pamyatka lichnomu sostavu chastey I podrazdeleniy povedeniyu boevykh deistviy v Chechenskoy Respublike" [Instructions for unit and subunit personnel involved in combat in the Chechen Republic], Ameryskiy sbornik, January 1996, 37.
21. Novichkov, 145.
22. Ibid, 123 For a more complete treatment of the subject, see Lester W. Grau, "Russian-manufactured Armored Vehicle Vulnerability in Urban Combat: The Chechnya Experience", Red Thrust Star, January 1997, 16-18 or On Line Version.
23. Author discussions with a South African officer at Fort Leavenworth, Kansas during March 1995.
24. Lester W. Grau, The Bear Went Over the Mountain: Soviet Combat Tactics in Afghanistan, London: Frank Cass Publishers, 1998, 24-26.
25. Author's opinion.
26. Author's opinion based on conversations with Major Darr Reimers, an army aviator.
27. Sykholesskiy, 61.
that's what I'm thinking ... it is my prime suspect in the penetration of M1's in Iraq involved in non-tank battles ... I think it is the AT-14 but my recollection may be faulty ... I'll bet the serial numbers, if they left the canisters behind, could be traced to Syria or Iran, which at one time supplied Syria heavily ...
Since when does the media report positive reports?
The Russian Kornet are powerful weaposn, but they are a wire-guided weapon relying on input from the shooter who must remain exposed while the rocket is guided in. The Israelis have come up with a simple but effective way to cause the missiles to miss. They just keep a careful watch for the missile and fire .50 cal's towards the point of origin. The shooter invariable ducks and the missile is lost. That wouldn't work at very close ranges though.
We don't know enough yet. The tank may not have been secured when it was hit.
Both are rather unlikely; the latter is particularly unlikely, unless somebody repealed Newton's Third Law of Motion. ("For every action there is an equal and opposite reaction.")
My demented mind can see a jihadist firing this shoulder-fired hypervelocity kinetic energy round...and the recoil knocking his a$$ through several walls, leaving a Looney-Toons-ish series of jihadist-shaped holes (c8
Most like explanation: the RPG round hit exactly the right (or wrong, depending on your perspective) spot.
Very plausible, particularly if they mask the attack of one of them with several RPG rounds.
A great idea, except that the Kornet has a fairly long MINIMUM range (that point where the missile becomes controllable by the guidance system) for urban fighting.
I agree, I'd like to know where the Kornets are. During the invasion, there were sporadic reports of attacks by Kornets.
that was my suspicion at the time ...
Does the Kornet E come with the neat hat?
Poohbah, the mental image this line creates for me is too funny to put into words. BTW you owe me a keyboard.
The HV would not be fired off the shoulder...but its launch could be masked by RPG attack...just like the Kornet attack could be which I find more plausible anyway.
There is a street in West Belfast called "RPG Road" because its natural curve and elevation made it an ideal position for the IRA to use RPG's against British Army vehicles. It is amazing when you see just how narrow this street is (and tightly packed with houses) that the Provos never caused a single civilians casualty when firing down it.
please post minimum range, and why that is an issue ... a lot of these tanks are parked in the streets it appears from some of the film footage ... if it was parked between houses, maybe ...
That minimum range is reported to be 100 meters.
fox news does, and they are the number one cable net in this country. so do a lot of newspapers and sites all over the net.
I will not second guess at this time. Need to find out more abuot the incident. The so called mysterious penetrator of an M1 in Iraq last year was more than likely, read 99% probablity, an RPG-7V. Will have to wait and see on this one.
Jeff's post indicates newer ones are laser-guided ... perhaps the old ones were wire-guided?
Even though it is the best MBT around, the orginal design of the Abrams body and armor is aging and enemies have had a long time to work the problem.
From the reports, at most they only have a few of them...let's hope that is the case and we can prevent them from getting more.
about 328 feet or so? ... just over a football field in length ...
Great posting on the RPG-7 and tactics! THanks!
If these are HEAT rounds, perhaps they should add Blazer Reactive to the M1A1? The Abrams' highly touted Chobham armor doesn't impress me.
No, the tank's armor is mostly steel, but includes layers of DU - as well as cermanic layers in titanium mesh - to vary the concentration along the path of a potential penetration, etc. It is not "composed of" DU, which would imply it is made of DU and nothing else.
"It is supposed to even be able to repel any type of round that comes from another tank"
No, physically impossible. The ceramic layering is meant to defeat many smaller HEAT rounds, and the DU layering is meant to defeat plain AP and some high velocity long rod penetrators, at some ranges, and against the thickest frontal plates. A T-72 round can be stopped at 1 km. But from the side it would go in. And the best modern tanks would penetrate even from the front it close enough.
Tanks are not meant to be invulnerable. They are meant to be well protected against many common weapons. This reduces the number of enemy weapons that can hurt them, and allows them to focus on those and outshoot them. Against everything else, they can shoot them with impunity. That is what creates the tactical effect sought when using tanks.
There is nothing surprising in *enough* AT rounds - even simple HEAT rounds - managing to knock one out. When the part of the tank hit is not specified or when the tank is hit repeatedly in the same place, there isn't much to explain. It would be outstanding if any number produced no effect, but it is not the design standard the tank is held to.
Stay Safe !
Fox and that's about it period. May be some local print media, but the great preponderance of the media will see this country drown before they tell the American people the truth about just what is going on in the world. They have their own political agenda. A good example is: when was the last time you heard or read of all the good work being accomplished in Iraq? Name just two please.
OK, so you're talking about a tube the size of a MBT gun, getting wheeled around...
Ahem, even the Army would tend to notice such things...
1200 mm is almost 4 feet. That's pretty thick armor.
they did figure it out. It was a French anti-tank weapon, unknown how one rocket got into Iraqi hands. Sorry I don't have a source for you. It put a pencil-sized slug of uranium through the armor. The French had sold that munition to a few east-european governments tho.
I defer to Jeff's expertise on this.
At the risk of telling you something you may already know, 1200 mm is the equivalent thickness of the chobham armor, ie. as if the armor were made solely of Rolled Homogeonous Steel. It's not actually 1200 mm...