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Challenger 2

FV 4034 Challenger 2
A Challenger 2 tank patrolling outside Basra, Iraq, during Operation Telic.
Type Main battle tank
Place of origin United Kingdom
Service history
In service 1998–present
Used by British Army, Oman Army
Wars Iraq War
Production history
Manufacturer Alvis plc, BAE Systems Land & Armaments
Unit cost £4,217,000[1]
Produced 1993–2002
Number built ≈ 446
Weight 62.5 tonnes (61.5 long tons; 68.9 short tons)
Length 8.3 m (27 ft 3 in), 13.50 m (44 ft 3 in) with gun forward
Width 3.5 m (11 ft 6 in), 4.2 m (13 ft 9 in) with appliqué armour
Height 2.49 m (8 ft 2 in)
Crew 4 (commander, gunner, loader/operator, driver)

Armour Chobham / Dorchester Level 2 (classified)
L30A1 120 mm rifled gun with 52 rounds
Coaxial 7.62 mm L94A1 chain gun EX-34 (chain gun), 7.62 mm L37A2 Commander's cupola machine gun
Engine Perkins CV-12 V12 diesel 26 litre
1,200 hp (890 kW)
Power/weight 19.2 hp/t (14.3 kW/t)
Transmission David Brown TN54 epicyclic transmission (6 fwd, 2 rev.)
Suspension Hydropneumatic
Ground clearance 0.5 m (1 ft 8 in)[2]
Fuel capacity 1,592 litres (350 imp gal; 421 US gal)[2]
550 km (340 mi) on road,[3] 250 km (160 mi) off road on internal fuel[2]
Speed 59 km/h (37 mph) on road,[4] 40 km/h (25 mph) off road[2]

The FV4034 Challenger 2 is a British main battle tank (MBT) in service with the armies of the United Kingdom and Oman. It was designed and built by the British company Vickers Defence Systems (now known as BAE Systems Land & Armaments).[5]

Vickers Defence Systems began to develop a successor to Challenger 1 as a private venture in 1986. A £90 million deal for a demonstrator vehicle was finalised in January 1989. In June 1991, the Ministry of Defence placed a £520 million order for 140 vehicles, with a further 268 ordered in 1994. Production began in 1993 and the unit's tanks were delivered in July 1994, replacing the Challenger 1. The tank entered service with the British Army in 1998, with the last delivered in 2002. It is expected to remain in service until 2035. The Army of Oman ordered 18 Challenger 2s in 1993 and a further 20 tanks in November 1997.

The Challenger 2 is an extensive redesign of the Challenger 1. Although the hull and automotive components seem similar, they are of a newer design and build than those of the Challenger 1 and fewer than 5% of components are interchangeable.[6] The tank's drive system provides a 550 km range, with a maximum road speed of 59 km/h. It has a four-man crew.

The Challenger 2 is equipped with a 120-millimetre (4.7 in) 55-calibre long L30A1 tank gun,[7] the successor to the L11 gun used on the Chieftain and Challenger 1. Uniquely among NATO main battle tank armament, the L30A1 is rifled, because the British Army continues to place a premium on the use of high explosive squash head (HESH) rounds in addition to armour-piercing fin-stabilized discarding-sabot armour-piercing rounds. The Challenger 2 is also armed with a L94A1 EX-34 7.62 mm chain gun and a 7.62 mm L37A2 (GPMG) machine gun. Forty nine main armament rounds and 4,200 rounds of 7.62 mm ammunition are carried.

The Challenger 2 is considered to be one of the best protected tanks in the world.[8] The turret and hull are protected with second generation Chobham armour (also known as Dorchester). However, on one occasion, in August 2006, during the post-invasion stage of the Iraq War 2003 an RPG-29 was fired at a Challenger 2 that was climbing over a ramp, the front underside hull armour of the tank which was not augmented with an ERA package was damaged, the tank subsequently returned to base under its own power and was quickly repaired and back on duty the following day.[9][10] As a result, the ERA package was replaced with a Dorchester block and the steel underbelly lined with armour as part of the 'Streetfighter' upgrade as a direct response to this incident. To date, the only weapon to do any serious damage to a Challenger 2 was another Challenger 2 tank in a 'blue on blue' (friendly fire) incident, that being the only time the tank has ever been seriously damaged during operations.

It has seen operational service in Bosnia, Kosovo and Iraq.


  • History 1
  • Design 2
    • Armament 2.1
      • Fire control and sights 2.1.1
    • Protection 2.2
    • Drive system 2.3
    • Crew and accommodation 2.4
  • Operational history 3
  • Upgrades and variants 4
    • CLIP/CLEP 4.1
    • Titan 4.2
    • Trojan 4.3
    • Challenger 2E 4.4
    • CRARRV 4.5
  • Operators 5
  • See also 6
    • Tanks of comparable role, performance and era 6.1
  • Notes 7
  • References 8
  • External links 9


The Challenger 2 is the third vehicle of this name, the first being the A30 Challenger, a Second World War design using the Cromwell tank chassis with a 17-pounder gun. The second was the Persian Gulf War era Challenger 1, which was the British army's main battle tank (MBT) from the early 1980s to the mid-1990s.

Vickers Defence Systems began to develop a successor to Challenger 1 as a private venture in 1986. Following the issue of a Staff Requirement for a next-generation tank, Vickers formally submitted its plans for Challenger 2 to the

  • British army Challenger 2 webpage

External links

  • Rayment, Sean (12 May 2007). "MoD kept failure of best tank quiet". Daily Telegraph (London). Retrieved 2007-08-09. One of the British Army's Challenger 2 tanks was pierced by an Iraqi insurgent missile more than eight months earlier than the Government has previously admitted 
  • "Fact file: Challenger 2". BBC News. 7 January 2003. Retrieved 2008-07-09. 
  • Houston, Simon (2 April 2003). "Dragoon guards survive ambush". Daily Record (BBC News). Retrieved 2008-09-14. 


  1. ^ "Challenger 2". Retrieved 2011-01-16. 
  2. ^ a b c d Foss, Chris. Jane's Armour and Artillery 2005–2006. Jane's Information Group. p. 143.  
  3. ^ a b c Maginnis, Chris (6 July 2013), Tankfest 2013 Challenger 2 MBT (Ultra Modern Version), youtube 
  4. ^ "British Army Vehicles and Equipment" (PDF). Retrieved 30 October 2014. 
  5. ^ "Products & Services Challenger 2". BAE Systems. 14 February 2008. Retrieved 2011-01-16. 
  6. ^ "Challenger 2 main battle tank". Army Recognition. Retrieved 30 October 2014. 
  7. ^ a b "Vickers Defence Systems Challenger 2 MBT". Archived from the original on 4 August 2004. 
  8. ^ a b c "Main Battle Tank – Challenger 2". Retrieved 2011-01-16. 
  9. ^ a b Rayment, Sean (2007-05-13). "MoD kept failure of best tank quiet".  
  10. ^ a b "Defence chiefs knew 'invincible' tank armour could be breached".  
  11. ^ a b Challenger 2 Main Battle Tank 1987–2006 By Simon Dunstan, Tony Bryan, page 5
  12. ^ Trojan and Titan Armoured Engineer Vehicles
  13. ^ Laura Sjoberg; Sandra Via; Cynthia Enloe (2010). Gender, War, and Militarism: Feminist Perspectives. ABC-CLIO. p. 40.  
  14. ^
  15. ^ UK; New MBT discarded, Army opts for Challenger 2 upgrade -, 13 October 2015
  16. ^ Audrey Gillan. A brew brings coalition forces closer together, Guardian Unlimited, 7 April 2003
  17. ^ "Iraq bombing damages British tank". BBC News. 23 April 2007. 
  18. ^ "Dragoon guards survive ambush". BBC News. 2 April 2003. Retrieved 2011-01-16. 
  19. ^ "'"Tanks and artillery 'face MoD axe. BBC News. 3 April 2003. Retrieved 2011-01-16. 
  20. ^ "UK Ministry of Defence : Army Board of Inquiry Report" (PDF). Retrieved 2011-01-16. 
  21. ^ Foster, Patrick (23 April 2007). "Improvised bomb hits British tank". The Times. 
  22. ^ a b British Next Generation Armour, Tankograd British Special no. 9009, Dan Hay
  23. ^ a b "ForecastInternational" (doc). Retrieved 2009-08-08. 
  24. ^ "Army". Retrieved 30 October 2014. 
  25. ^ Foss, Christopher F. "UK fields regenerative NBC system". Jane's Defence News. Archived from the original on 27 May 2008. 
  26. ^ "Military Vehicles Forecast" (PDF). Retrieved 2009-08-08. 
  27. ^ "DE&S highlights industry opportunities on UK armour programmes". Retrieved 30 October 2014. 
  28. ^ "DVD 2014: UK Challenger 2 LEP numbers may drop". Retrieved 30 October 2014. 
  29. ^ "Challenger nears end of the line". Jane's Land Forces News.  Archived 14 February 2007 at the Wayback Machine


Tanks of comparable role, performance and era

See also

Map of Challenger 2 operators.


The design prototype is on display at The REME Museum of Technology in Arborfield, Berkshire.

  • A main winch with 50 tonnes-force pull in a 1:1 configuration or 98 tonnes-force pull using an included pulley in a 2:1 configuration and anchor point on the vehicle, plus a small auxiliary winch to aid in deploying the main winch rope.
  • Atlas crane capable of lifting 6,500 kg (14,300 lb) at a distance of 4.9 m (16 ft) (this is sufficient to lift a Challenger 2 power pack).
  • In order to improve the flexibility and supplement the transportation power packs around the battlefield, the British Army procured a quantity of dedicated CRARRV High Mobility Trailers (CRARRV HMT). Each CRARRV HMT enables a CRARRV to transport a single (Challenger, Titan or Trojan) power pack or two Warrior power packs by altering the configuration of dedicated fixtures and attachment of fittings.
  • Dozer blade to act as an earth anchor/stabiliser, or in obstacle clearance and fire position preparation.
  • Large set of recovery and heavy repair tools including a man portable ultrathermic cutting system with an under water cutting capability and a man portable welding solution.

The size and performance are similar to the MBT, but instead of armament it is fitted with:

The Challenger Armoured Repair and Recovery Vehicle (CRARRV) is an armoured recovery vehicle based on the Challenger 1 hull and designed to repair and recover damaged tanks on the battlefield. It has five seats but usually carries a crew of three soldiers from the Royal Electrical And Mechanical Engineers (REME), of the recovery mechanic and vehicle mechanic/technician trades. There is room in the cabin for two further passengers (e.g. crew members of the casualty vehicle) on a temporary basis.

CRARRV on display at Salisbury Plain


BAE announced in 2005 that development and export marketing of 2E would stop. This has been linked by the media to the failure of the 2E to be selected for the Hellenic Army in 2002, a competition won by the Leopard 2.[29]

The power pack has been replaced by a new 1,500 hp (1,100 kW) EuroPowerPack with transversely mounted MTU MT 883 diesel engine coupled to Renk HSWL 295TM automatic transmission. The increase in vehicle performance is significant. The smaller volume but more powerful power pack incorporates as standard a cooling system and air-intake filtration system proved in desert use. The free space in the hull is available for ammunition stowage or for fuel, increasing the vehicle's range to 550 km (340 mi).

The Challenger 2E is an export version of the tank. It has a new integrated weapon control and battlefield management system, which includes a gyrostabilised panoramic SAGEM MVS 580-day/thermal sight for the commander and SAGEM SAVAN 15 gyrostabilised day/thermal sight for the gunner, both with eyesafe laser rangefinder. This allows hunter/killer operations with a common engagement sequence. An optional servo-controlled overhead weapons platform can be slaved to the commander's sight to allow operation independent from the turret.

Challenger 2E

The Trojan Armoured Vehicle Royal Engineers is a combat engineering vehicle designed as a replacement for the Chieftain AVRE (ChAVRE). It uses the Challenger 2 chassis, and carries an articulated excavator arm, a dozer blade, and attachment rails for fascines. Entering service in 2007, 33 were produced.

Trojan AVRE


The Titan armoured bridge layer is based on aspects of the Challenger 2 running gear and will replace the Chieftain Armoured Vehicle Launched Bridge (ChAVLB). The Titan came into service in 2006 with the Royal Engineers, with 33 in service. Titan can carry a single 26-metre long bridge or two 12-metre long bridges. It can also be fitted with a bulldozer blade.

TITAN Bridge Launcher with No.12 Bridge at Salisbury Plain


In July 2013, it was confirmed that the Challenger II Life Extension Programme is in the concept stage and will be in initial gate by 2014.,[27] this later slipped to early 2015. In June 2014, it was stated that not all of the 227 Challenger 2s may be modified to CLEP standard and the smoothbore cannon had been dropped.[28]

In May 2007, the Ministry of Defence's Future Systems Group invited BAE to tender for the Challenger 2 Capability Sustainment Program (C2 CSP), which combined all upgrades into one programme. However, by mid-2008, the programme was in danger of slipping, or even being cancelled, as a result of defence budget shortfalls.[26]

Other improvements have also been considered, including a regenerative NBC protection system.[25]In addition several Challenger 2s had the pintle mounted GPMG on the loader's crew hatch replaced with a remote controlled turret, allowing the loader to operate the weaponry without having to expose himself to enemy fire.

A single Challenger 2 was fitted with the L55 and underwent trials in January 2006.[24] The smoothbore gun is the same length as the L30A1, and is fitted with the rifled gun's cradle, thermal sleeve, bore evacuator and muzzle reference system. Early trials apparently revealed that the German tungsten DM53 round was more effective than the depleted-uranium CHARM 3.[8] The ammunition storage and handling arrangements will need to be changed to cater for the single-piece smoothbore rounds, instead of the separate-loading rifled rounds. In 2006, a figure of £386 million was estimated to fit all Challengers in the British Army with the Rheinmetall 120 mm gun.[23]

Challenger II fitted with 120 mm smoothbore gun for trials

The Challenger Lethality Improvement Programme (CLIP) was a programme to replace the current L30A1 rifled gun with the smoothbore Rheinmetall 120 mm gun currently used in the Leopard 2A6. The use of a smoothbore weapon would have allowed Challenger 2 to use NATO standard ammunition developed in Germany and the US. This includes tungsten-based kinetic energy penetrators, which do not have the same political and environmental objections as depleted uranium rounds. The production lines for rifled 120 mm ammunition in the UK have been closed for some years, so existing stocks of ammunition for the L30A1 are finite.[23] In 2009, a new HESH round manufactured in Belgium has been trialled. This means that the Challenger 2 now has available a new Tungsten FIN and HESH rounds, if and when required, which secures a line of ammunition for its 55 calibre rifled main gun, the L30, when required in the future.


Upgrades and variants

To help prevent incidents of this nature happening again, Challenger 2s have been upgraded with a new passive armour package, including the use of add-on armour manufactured by Rafael Advanced Defense Systems of Israel.[22] When deployed on operations the Challenger 2 is now normally upgraded to TES (Theatre Entry Standard), which includes a number of modifications including armour and weapon system upgrades.

An upgraded Challenger II with added explosive reactive armour panels, manufactured by Rafael Advanced Defense Systems[22]
  • 25 March 2003: A friendly fire ("blue-on-blue") incident in Basra in which one Challenger 2 of the Black Watch Battlegroup (2nd Royal Tank Regiment) mistakenly engaged another Challenger 2 of the Queen's Royal Lancers after detecting what was believed to be an enemy flanking manoeuvre on thermal equipment. The attacking tank's second HESH round hit the open commander's hatch lid of the QRL tank sending hot fragments into the turret, killing two crew members. The strike caused a fire that eventually led to an explosion of the stowed ammunition, destroying the tank. It remains the only Challenger 2 to be destroyed on operations.[20]
  • 6 April 2007: in Basra, Iraq, a shaped charge from an IED penetrated the underside of a tank resulting in the driver losing three of his toes and causing minor injuries to another soldier.[21]

Two Challenger 2s have been damaged in combat, but only one has been destroyed:

In August 2006 south east of al-Amarah, southern Iraq, an RPG-29 capable of firing a tandem-charge penetrated the frontal armour of a Challenger 2 commanded by Captain Thomas Williams of The Queens's Royal Hussars. The tank, which had already been hit by 10-15 RPGs, small arms and sniper fire, was attempting to draw fire away from another callsign that had become stricken. Its driver, Trooper Sean Chance, lost part of his foot in the blast; two more of the crew were slightly injured. Chance was able to reverse the vehicle 1.5 mi (2.4 km) to the regimental aid post despite his injuries. The incident was not made public until May 2007; in response to accusations that crews had been told the tank was impervious to the insurgents weapons, the MoD said "We have never claimed that the Challenger 2 is impenetrable."[10][9] Since then, the ERA has been replaced with a Dorchester block and the steel underbelly lined with armour as part of the 'Streetfighter' upgrade as a direct response to this incident.

During the 2003 invasion of Iraq, the Challenger 2 tanks suffered no tank losses to enemy fire, although one was penetrated by an IED. This was, at the time, unprotected by Dorchester armour. The driver was injured. In one encounter within an urban area, a Challenger 2 came under attack from irregular forces with machine guns and rocket propelled grenades. The driver's sight was damaged and, while attempting to back away under the commander's directions, the other sights were damaged and the tank threw its tracks entering a ditch. It was hit directly by 14 rocket propelled grenades from close range and a MILAN anti-tank missile.[18] The crew survived, remaining safe within the tank until it was recovered for repairs, the worst damage being to the sighting system. It was back in operation six hours later, after repairs had been done. One Challenger 2 operating near Basra survived being hit by 70 RPGs in another incident.[19]

A Challenger 2 crosses into Iraq, 2003

The Challenger 2 had been used in peacekeeping missions and exercises before, but its first combat use came in March 2003 during the invasion of Iraq. 7th Armoured Brigade, part of 1st Armoured Division, was in action with 120 Challenger 2s around Basra. The type saw extensive use during the siege of Basra, providing fire support to the British forces and knocking out multiple enemy tanks, mainly T-54/55s. The problems that had been identified during the large Saif Sareea II exercise, held 18 months earlier, had been solved by the issuing of Urgent Operational Requirements for equipment such as sand filters and so during the invasion of Iraq the tank's Operational availability was improved.

[The tank was] "well armoured but in an operational theatre it's not the case that you can have absolute protection. This was not in any way new technology – the device involved was the same type of shaped charge that we have seen used very regularly. No-one has ever said Challenger tanks are impenetrable. We have always said that a big enough bomb will defeat any armour and any vehicle."

MOD Spokesman, speaking in regard to the Challenger 2[17]

Operational history

Similar to every British tank since the Centurion, and most other British AFVs, Challenger 2 contains a boiling vessel (BV) for water, which can be used to brew tea, produce other hot beverages and heat boil-in-the-bag meals contained in field ration packs.[16] This BV requirement is general for armoured vehicles of the British Armed Forces, and is unique to the armed forces of the UK and India.

The British Army maintained its requirement for a four-man crew (including a loader) after risk analysis of the incorporation of an automatic loader suggested that auto-loaders reduced battlefield survivability. Mechanical failure and the time required for repair were prime concerns.

Crew and accommodation

As of 2013, the British Army has, at various events featuring the Challenger 2, begun to state the range of 550 km.[3] They have also publicly stated a maximum road speed of 59 km/h while equipped with 15 tons of additional modules.[3]

  • Engine: Perkins 26.6 litre CV12 diesel engine delivering 1,200 hp (890 kW).
  • Gearbox: David Brown TN54 epicyclical transmission (6 fwd, 2 rev.).
  • Suspension: second-generation hydrogas.
  • Track: William Cook Defence hydraulically adjustable double-pin.
  • Maximum speed: 37 mph (60 km/h) on road); 25 mph (40 km/h) cross country
  • Range: 280 mi or 450 km on road); 156 mi (250 km) cross country, on internal fuel

The tank's drive system comprises:

A Royal Scots Dragoon Guards Challenger II climbing an obstacle during a training exercise 17 Nov 2008, in Basra, Iraq

Drive system

On each side of the turret are five L8 smoke grenade dischargers. The Challenger 2 can also create smoke by injecting diesel fuel into the exhaust manifolds.

The Challenger 2 is one of the most heavily armoured and best protected tanks in the world.[8] The turret and hull are protected by second generation of Chobham armour (also known as Dorchester), the details of which are classified but which is said to be more than twice as strong as steel. Crew safety was paramount in the design, using a solid state electric drive for its turret and gun movement, thus removing the traditional risk of hydraulic rupture into the crew compartment. Explosive reactive armour (ERA) kits are also fitted as necessary along with additional bar armour. The nuclear, biological and chemical (NBC) protection system is located in the turret bustle. The tank's shape is also designed with stealth technology to reduce radar signature.

Challenger II with armour upgrades to the sides of the turret, skirts, bar armour to rear. Smoke grenade launchers visible on turret front. Counter-IED ECM antennas are on the platform on the turret, and additional ECM equipment overhangs the left and right front fenders.


The Thermal Observation and Gunnery Sight II (TOGS II), from Thales, provides night vision. The thermal image is displayed on both the gunner's and commander's sights and monitors. The gunner has a stabilised primary sight using a laser rangefinder with a range of 200 m (660 ft) to 10 km (6.2 mi). The driver's position is equipped with a Thales Optronics image-intensifying Passive Driving Periscope (PDP) for night driving and a rear view thermal camera.

The commander has a panoramic SAGEM VS 580-10 gyrostabilised sight with laser rangefinder. Elevation range is +35° to −35°. The commander's station is equipped with eight periscopes for 360° vision.

The digital fire control computer from Computing Devices Co of Canada contains two 32-bit processors with a MIL STD1553B databus, and has capacity for additional systems, for example a Battlefield Information Control System.

Close up view of a Challenger 2

Fire control and sights

The Challenger 2 is also armed with a L94A1 chain gun EX-34 7.62 mm chain gun coaxially to the left of the main gun, and a 7.62 mm L37A2 (GPMG) machine gun mounted on a pintle on the loader's hatch ring. 4,200 rounds of 7.62 mm ammunition are carried. The Challenger can also mount a remote weapons system bearing a 7.62 mm L37A2 (GPMG) machine gun, a 12.7mm heavy machine gun or a 40mm automatic grenade launcher.

Forty-nine main armament rounds are carried in the turret and hull; these are a mix of L27A1 APFSDS (also referred to as CHARM 3), L31 HESH and L34 white phosphorus smoke rounds, depending on the situation. As with earlier versions of the 120 mm gun, the propellant charges are loaded separately from the shell or KE projectile. A combustible rigid charge is used for the APFSDS rounds, and a combustible hemispherical bag charge for the HESH and Smoke rounds. An electrically fired vent tube is used to initiate firing of the main armament rounds. (The main armament ammunition is thus described to be "three part ammunition", consisting of the projectile, charge and vent tube.) The separation of ammunition pieces also aids in ensuring lower chances of ammo detonation.

Uniquely among NATO main battle tank armament, the L30A1 is rifled and along with its predecessor, Royal Ordnance L11A5, the only Third Generation Main Battle Tank Guns to use a rifled barrel. This is because the British Army continues to place a premium on the use of high explosive squash head (HESH) rounds in addition to Armour-piercing fin-stabilized discarding-sabot rounds. HESH rounds have a longer range (up to 8 kilometres or 5 miles further) than APFSDS, and are more effective against buildings and thin-skinned vehicles.

The Challenger 2 is equipped with a 120-millimetre (4.7 in) 55-calibre long L30A1 tank gun,[7] the successor to the L11 gun used on Chieftain and Challenger 1. The gun is made from high strength Electro Slag Remelting (ESR) steel with a chromium alloy lining and, like earlier British 120 mm guns, it is insulated by a thermal sleeve. It is fitted with a muzzle reference system and fume extractor, and is controlled by an all-electric control and stabilisation system. The turret has a rotation time of 9 seconds through 360 degrees.

A row of Challenger II on a firing range at BATUS, Canada
Close-up of muzzle showing rifling
A Challenger 2 firing its main gun during an exercise. The round is visible to the left of the smoke cloud



A British military document from 2001 indicated that the British Army would not procure a replacement for the Challenger 2 because of a lack of foreseeable conventional threats in the future.[13] However, IHS Jane's 360 reported on the 20 September 2015 that following discussions with Senior Army Officers and Procurement Officials at DSEI 2015, as well as the head of the British Army, General Sir Nick Carter, that the British Army was looking at either upgrading the Challenger 2 or outright replacing it. Sources confirmed that the future of the MBT was being considered at the highest levels of the Army. This stemmed from the British Army's concern with the new Russian T-14 Armata main battle tank and the growing ineffectiveness of the ageing L30 rifled gun and its limited suite of ammunition. Further, it was confirmed that numerous armoured vehicle manufacturers had discussions with the MoD about a potential replacement for the Challenger 2.[14] Shortly after, the British Army decided that purchasing a new tank would be too expensive and chose to proceed with a Challenger 2 life extension project (LEP).[15]

The Trojan minefield breaching vehicle and the Titan bridge-laying vehicle based on the chassis of the Challenger 2 were shown in November 2006; 66 are to be supplied by BAE Systems to the Royal Engineers, at a cost of £250 million.[12]

Deliveries of the Challenger 2 to Oman were completed in 2001.

The Challenger 2 entered service with the British Army in 1998 (with the 2nd Royal Tank Regiment in Germany), with the last delivered in 2002. It is expected to remain in service until 2035. It serves with the Queen's Royal Hussars, the King's Royal Hussars and the Royal Tank Regiment, each of which is the tank Regiment of an Armoured Infantry Brigade. Under Army 2020, only three Challenger 2 Tank Regiments will remain: the Queen's Royal Hussars, the King's Royal Hussars and the Royal Tank Regiment; in addition, a single Army Reserve regiment, The Royal Wessex Yeomanry, will provide Armoured Resilience.

An equally important milestone was the In-Service Reliability Demonstration (ISRD) in 1999. 12 fully crewed tanks were tested at the Bovington test tracks and at Lulworth Bindon ranges. The tank exceeded all staff requirements.

Challenger 2 Tank of the Royal Scots Dragoon Guards (Squadron D) during live fire training exercises on Bergen-Hohne Training Area (Germany)
  • 27 km (17 mi) of on-road travel
  • 33 km (21 mi) of off-road travel
  • 34 main armament rounds fired
  • 1,000 7.62 MG rounds fired
  • 16 hours weapon system operation
  • 10 hours main engine idling
  • 3.5 hours main engine running

The Challenger 2 successfully completed its Reliability Growth Trial in 1994. Three vehicles were tested for 285 simulated battlefield days. Each day consisted of:

Production began in 1993 at two primary sites: Elswick, Tyne and Wear and Barnbow, Leeds, although over 250 subcontractors were involved. The first tanks were delivered in July 1994.

In June 1991, after competition with other tank manufacturers' designs (including the M1A2 Abrams and the Leopard 2 (Improved)), the MoD placed a £520 million order for 127 MBTs and 13 driver training vehicles. An order for a further 259 tanks and 9 driver trainers (worth £800 million) was placed in 1994. Oman ordered 18 Challenger 2s in 1993 and a further 20 tanks in November 1997.

[11] The demonstration phase contained three milestones for progress, with dates of September 1989, March 1990, and September 1990. At the last of these milestones, Vickers was to have met 11 key criteria for the tank's design.[11]

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