Posted on 12/07/2004 12:10:32 AM PST by SAMWolf
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are acknowledged, affirmed and commemorated.
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The mainstay of the British Army of the 1960s and 1970s, the Chieftain mounts a long barreled 120mm cannon as well as 2 7.62mm machine guns, one coaxial and one anti-aircraft. The Chieftain solved the problem of ranging the main gun by using a ranging machine gun with similar ballistic characteristics as the cannon. When the machine gun rounds hit the target, the gunner could be reasonably assured that his cannon round will hit. The Chieftain succeeded the Centurion and was in turn replaced by the Challenger. Early Chieftains and some later modified tanks mount the 50. Cal M2HB machinegun over the main gun as a ranging gun. Iran and Kuwait retained the .50 Cal MG. The HESH round is used for antitank chemical-energy (CE) antiarmor missions, and for HE effects against personnel and materiel. The Iranians claim to employ a snorkel system on Chieftain, for fording to 5 meters depth. A variety of fire control systems and thermal sights are available for Chieftain. At 324 Chieftains have been upgraded with the Barr and Stroud TOGS thermal sight system. The 1R26 thermal camera can be used with the 1R18 thermal night sight. It has wide (13.6°) and narrow (4.75°) fields of view, and is compatible with TOGS format. GEC Sensors offers a long list of sights including: Multisensors Platform, Tank Thermal Sensor, and SS100/110 thermal night sight. Marconi, Nanoquest, and Pilkington offer day and night sights for the Chieftain. Charm Armament upgrade program, with the 120-mm L30 gun incorporated in Challenger 1, is available for Chieftain modification programs. VARIANTS Mk 5: Final production variant, with a new engine and NBC system, modified auxiliary weapons and sights. Mk 6-11 are upgrades to earlier models, with addition of IFCS. Mk 12 added ROMOR (aka: Stillbrew) spaced armor boxes. Mk 11 and Mk 12 have Thermal Observation and Gunnery Sight (TOGS). A variety of support vehicles were developed from the tank. They include recovery vehicles, AVLB, dozer, mineclearer, air defense and 155-mm SP artillery systems. Chieftain AVRE MK I: In 1986, the 40 Army Engineer Support Group Workshops in Willich, Germany, converted 12 Chieftain gun tanks into Chieftain AVREs for use in BAOR. Chieftain AVRE MK II:In late 1989 Vickers Defence Systems was awarded a contract for the design, development and conversion of 48 Chieftain gun tanks into Chieftain Armoured Vehicle Royal Engineers. The 48 vehicle contract included two prototype vehicles and 46 production vehicles in two batches. First two prototypes were completed in 1991 with production running until 1994. The conversion work utilised Chieftain MBT chassis provided from Army stocks. The vehicles have a new superstructure, a 10 tonnes capacity winch at the hull rear, an ATLAS hydraulic crane and top-mounted stowage platforms on which the engineer equipment is carried. Chieftain AVLB: The Chieftain AVLB is basically a Chieftain MBT chassis without a turret and fitted with a hydraulic system for laying and recovering a bridge. The vehicle can carry and lay either the No 8 or the No 9 Tank Bridge. A total of 51 AVLBs were built by Leeds, 37 for the UK Armed Forces and 14 for the Iranian Army. The No 8 Tank Bridge has an overall length of 24m and can span a gap of up to 23m. It is carried folded and launched over the front of the vehicle. The No 9 Tank Bridge is 13.5m long and can span a gap up to 12m. It is carried horizontally and is swung vertically through 180° and laid in position in front of the vehicle. Chieftain Marksman : Chieftain hull fitted with Marksman air defence gun system Chieftain ARRV: This is essentially a Chieftain ARV fitted with a hydraulic crane that can lift a complete Challenger MBT power pack. ARRVs were conversions from existing ARVs. Other modifications include hydraulic track tensioners. Chieftain Mk 6 AVLB: In March 1984, Vickers Defence Systems was awarded a contract by the UK MoD to convert 11 Chieftain Mk 1/4 gun tanks into Chieftain Mk 6 AVLBs. The user trials were completed by November 1985 and the first vehicles were handed over in June 1986 with final delivery made in September 1986. The conversion work included removing the complete turret and replacing it with an armoured roof plate with a commander's hatch; fitting the launching mechanism on the hull and roof plate to maintain the same geometrical position as on production AVLBs and providing mounting points at the front of the hull for the Pearson Engineering Track Width Mine Plough system. For Operation Desert Shield/Desert Storm, a number of the Chieftain AVLBs of the Royal Engineers were used in the mineclearing role. Additional Chobham-type armour was fitted to the sides of the vehicle similar to that fitted to the Challenger 1 MBT. As well as the Pearson Engineering plough system fitted at the front of the hull they were also fitted with a device to detect and activate mines fitted with a magnetic fuze. The vehicles also towed a trailer-mounted Giant Viper mineclearing system. Khalid/Shir 1: In 1979 Jordan ordered 274 slightly modified Shirs under the designation of Khalid which were delivered from 1981. Khalid is essentially a late production Chieftain with major changes to the fire control system and powerpack which is based on the Shir 2 version developed for Iran before the revolution. The engine is a Rolls-Royce Condor V12 1200bhp diesel. The fire control system is a Marconi system incorporating a Pilkington PE Condor commanders day/night sight with a Barr & Stroud Laser rangefinder. Germany purchased two chieftains for evaluation trials in the early 1970's, Their eventual fate is unknown. In 1971, Iran placed an order for approximately 707 Chieftain MBTs: the Mk 3/3(P) and Mk 5/3(P) plus a quantity of ARVs and bridgelayers, all of which were delivered by early 1978. Iran also took delivery of 187 improved Chieftains called the FV4030/1. In 1974, Iran ordered 125 Shir Iran 1 and 1,225 Shir Iran 2 MBTs for delivery from 1980 - but the order was cancelled in 1979 after the fall of the Shah and before deliveries could begin from Royal Ordnance Leeds During fighting in the Middle East, Iraq captured between approximately 300 Chieftain MBTs from Iran, many of which were undamaged. In 1988, Iraq passed on to Jordan 90 Chieftains amongst a large quantity of military equipment. Contrary to well established rumour the Iraelis never had any Chieftains in service. Two Chieftain Mark 1/2 were sent to Israel as part of a sales drive but were withdrawn shortly before the outbreak of war. Late in 1988, Iraq gave Jordan a large amount of military equipment captured during the fighting with Iran. It included 90 Chieftains, 20 Scorpions, 60 M47 tanks, and 35 armoured personnel carriers. Chieftains of the Kuwaiti Army engaged Iraqi MBTs, including T-72s, during the Iraqi invasion of Kuwait in the summer of 1990. In August 1981, Oman took delivery of 12 British Army Chieftain Mk 7/2C MBTs. Though they were on loan they were subsequently purchased by Oman together with 15 new Chieftains called the Qayd Al Ardh, or Mk 15, which were delivered between 1984 and 1985. These Chieftains are fitted with the BAE L20 sight which incorporates the GEC-Marconi/Ferranti Type 520 laser rangefinder.
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Produced by the Royal Ordnance Factory in Leeds, the first Challenger 1s were delivered to the British Army in 1983. Challenger 1 is a development of the Centurion - Chieftain line which was modified to produce the Shir/Iran 2, originally planned for service with the Iranian forces.
The main differences between Challenger 1 and its predecessor Chieftain (the MBT that it replaced) were in the engine and armour. The Challenger engine, which produces 1,200 bhp at 2,300 rpm was far more powerful than the Chieftain engine, and the Chobham Armour carried is believed to give protection from almost all types of anti-tank weapon.
The main armament on all Challenger 1s has been upgraded by the installation of the L30 CHARM gun. In addition to firing the existing range of ammunition, this gun fires a new armour-piercing fin stabilised, discarding sabot round with a depleted uranium warhead, which should be able to defeat the armour on all known MBTs.
The only nation known to be operating Challenger 1 is Jordan, where the 274 tanks in service are known as Khalid. Under an agreement signed in March 1999, another 288 Challenger 1s are to be supplied to Jordan over a three-year period to enable the Jordanian fleet of Centurion MBTs (locally called Tariq) to be replaced.
This vehicle has now been phased out
CHALLENGER 1 Specifications | |
Phased out of operational service in November 2000 - has been replaced by Challenger 2 | |
Armament | 1 x 120mm L11A7 gun |
2 x 7.62mm Machine Guns | |
2 x 5 barrel smoke dischargers | |
Ammunition Capacity | 44 rounds of 120mm, 6,000 rounds of 7.62mm |
Engine | Rolls-Royce CV12 |
Engine Power | 1,200 bhp at 2,300rpm |
Engine Capacity | 26.1 litres |
Max Road Speed | 56km/h |
Weight loaded | 62,000kg |
Length Hull | 9.87m |
Length Gun Forward | 11.55m |
Height | 3.04m |
Width | 3.42m |
Ground Clearance | 0.5m |
Crew | 4 |
Ground Pressure | 0.96 kg/cm2 |
Fording Depth (no prep) | 1.07m |
CHALLENGER 2 Specifications | |
386 available for operational service | |
Crew | 4 |
Length Gun Forward | 11.55m |
Hull Length | 8.32m |
Height to Turret Roof | 2.49m |
Width | 3.52m |
Ground Clearance | 0.50m |
Combat Weight | 62,500kgs |
Main Armament | 1 x 120 mm L30 CHARM Gun |
Ammunition Carried | 52 rounds - APFSDS, HESH, Smoke, DU |
Secondary Armament | Co-axial 7.62mm MG 7.62mm GPMG Turret-Mounted for Air Defence |
Ammunition Carried | 4000 rounds 7.62mm |
Engine | CV12TCA 12 cylinder |
Auxiliary Engine | Perkins 4.108 4- stroke diesel |
Gearbox | TN54 epicyclic - 6 forward gears and 2 reverse |
Road Speed | 56km/h |
Cross Country Speed | 40km/h |
Fuel Capacity | 1,797 litres |
Additional Sources:
www.globalsecurity.org
news.bbc.co.uk
www.jedsite.info
www.tankmuseum.com
www.tankzone.co.uk
www.hobbylinc.com
www.army-technology.com
www.eurus.dti.ne.jp
www.janes.com
www.ginklai.net
www.operations.mod.uk
www.smh.com.au
At £5.6m a piece, the UK's main battle tank, the Challenger 2, is an expensive piece of kit but, as BBC News Online discovered, it is not a great environment to work in, especially in the stifling heat of the Iraqi desert. A Challenger 2 advances into Iraq War is never an easy business, but for the crews of the British Challenger 2 tanks in action in Iraq this is an especially hard campaign. The British Army has 40 of these 61-ton behemoths, many of which are in the front line near Basra. They replaced their predecessors, the Challenger 1, in 1994. The new model has 150 improvements over its predecessor, which saw action in the first Gulf War in 1991. Challenger 2 has a crew of four:
British Challenger 2 tanks fire on enemy vehicles on the front line just outside Basra. Francis Tusa, editor of Defence Review, said one important improvement on the Challenger 1 was the fact that the commander now had a "hunter/killer nightsight". This meant that, as the gunner was firing at one target, the commander could be searching for the next target. Each man will be trained sufficiently to do each other's jobs but they will tend to specialise in their own areas. The crew will eat, sleep and work together for hours at a time and former Challenger crewman and Gulf war veteran Alistair Miller, from Belfast, told BBC News Online: "There is a tight bond between the crew. "We were like brothers but the commander is like the daddy." He said the banter between the crew could be "brutal" at times but would never get out of hand. Inside the tank compartment it is stiflingly hot during the day but often very cold at night. Mr Tusa said the Challenger 2 had an environmental control system which was an improvement on Challenger 1 but he said it was unable to cope with the sweltering heat of the desert. Mr Miller said another morale-sapping factor was the darkness. "It was always very dark, with all lights painted red to prevent the tank being noticed at night. You are forever banging your head or elbow or scraping your knuckles." The tank is also "extremely cramped" with four fully grown men sharing a space barely 15 feet by 10 feet and only about six feet high. Inside this space the men have to stow four NBC suits each plus rations, equipment and clothes. The crew compartment has an air filtering system, as well as a heating and cooling system, and is separated from ammunition for obvious safety reasons. Mr Miller said the overriding smell was of burning cordite, from the rounds which were being fired. Mr Tusa said that although the tank was designed to be driven while completely sealed, most commanders preferred to drive "hatch up" so they could poke their heads out and check out their landscape unfettered by periscopes or night sights. |
Good morning, Snippy and everyone at the Foxhole.
Read: Jeremiah 23:16-23
Woe to the shepherds who destroy and scatter the sheep of My pasture! Jeremiah 23:1
Bible In One Year: Daniel 5-7; 2 John
In 1517, Martin Luther nailed his Ninety-Five Theses to the door of the castle church in Wittenberg. Luther became known as a reformer, and we remember his bold stand as a turning point in church history.
The fiery priest demonstrated great courage in expressing outrage at the church's practice of selling forgiveness through indulgences, which allowed the people to sin intentionally in exchange for money.
Luther's passion to stop these practices did not make him popular with the religious authorities of his day. In fact, his efforts resulted in a series of attempts to silence him.
Long before Luther, the prophet Jeremiah felt the power of God's Word in his heart "like a burning fire shut up in my bones; I was weary of holding it back, and I could not" (Jeremiah 20:9). Jeremiah and Luther refused to allow God's truth to be compromised.
Living for God is about grace and forgiveness, but it's also about boldly standing for the truth. Having God's Word in our heart doesn't always result in warm, pleasant feelings. Sometimes His truth becomes a blazing fire that causes us to challenge corruptioneven though we may be attacked for it. Julie Ackerman Link
Good morning....looks like MORE rain today.
Saw this pic on thread called Fun With Tanks over the weekend. Notice the essential rations just to the left of the gunner, heh.
Regards
alfa6 ;>}
Good morning, Foxhole! Falling in for Treadhead Tuesday. Snippy, I hope all is well with you, Sam and the store.
In reading the complaints about the Challenger listed in the article above, I couldn't help but think that it could have been worse: they could have been talking about WW2 British tanks. :)
On this Day In History
Birthdates which occurred on December 07:
0967 Abu Sa'id ibn Aboa al-Chair Persian mystic
1542 Mary Stuart Queen of Scots (1560-1587)
1598 Giovanni Bernini, Italy, baroque sculptor (St Teresa in Ecstasy)
1761 Madame [Marie Grosholtz] Tussaud, created wax museum
1810 Theodor Schwann, German co-originator of cell theory
1823 Leopold Kronecker, German mathematician (Tensor of Kronecker)
1876 Willa Cather (author: O Pioneers!, My Antonia)
1905 Gerard Kuiper, Dutch/US astronomer (moons of Uranus, Neptune)
1912 Louis Prima (musician, singer: Just a Gigolo; Las Vegas act [w/wife Keely Smith]
1915 Eli Wallach (actor: Emmy Award-winning Best Supporting Actor/ Drama: The Poppy is Also a Flower [1966-'67])
1925 Ted Knight (Tadeus Konopka) (Emmy Award-winning Actor: Mary Tyler Moore Show [1972-73, 1975-76])
1926 Victor Kermit Kiam II CEO (Remington shavers)/NFL owner (Patriots)
1928 Noam Chomsky (linguist, educator, activist, moral midget)
1931 Bobby Osborne (singer: duo: Osborne Brothers: Rocky Top)
1932 Ellen Burstyn (Edna Rae Gilhooley) (Academy Award-winning actress: Alice Doesn't Live Here Anymore [1974])
1935 Don Cardwell (baseball)
1940 Gerry Cheevers (hockey: Boston Bruins goalie: longest undefeated streak [32 games])
1942 Harry Chapin (songwriter, singer: Taxi, Cat's in the Cradle
1945 Al Woodall (football)
1947 Gary Unger (hockey)
1947 Johnny Bench (Baseball Hall of Famer: Cincinnati Reds catcher, 1968 Rookie of the Year
1947 Leo Brooks (football)
1948 Yoko Morishita, prima ballerina (Baterina No Habataki)
1949 Brian Goodman (football)
1949 Tom Waits, Calif, rocker/song writer (Blue Valentine)
1956 Larry Bird hoop star (Boston Celtics)
So what is it? I know Zenith is coming out with a light twin.
Diamond DA-42. It has some pretty good numbers.
Well, I am just going to have to keep saving the money. My two choices are still the Zenith 601 or 701.
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