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L7A3
The Royal Ordnance L7, officially designated Gun, 105 mm, Tank, L7, is the basic model of the United Kingdom's most successful tank gun. The L7 is a 105 mm L/52 rifled design by the Royal Ordnance Factories intended for use in armoured fighting vehicles, replacing the earlier Ordnance QF 20 pounder, QF 20-pounder (84 mm) tank gun mounted on the Centurion tank. The successful L7 gun has been fitted on many armoured vehicles including the British Centurion (starting from the Mk. 5/2 variant), the German Leopard 1 and several variants of the US MBTs M48 Patton and M60 tank, M60 in an altered design, the M68 (tank gun), M68. The L7 is a popular weapon and continued in use even after it was superseded by the Royal Ordnance L11, L11 series 120 mm rifled tank gun, for some Centurion tanks operating as Artillery Forward Observation and Armoured Vehicle Royal Engineers, Armoured Vehicle, Royal Engineers (AVRE) vehicles. The L7, and adaptations of it, can be found as standard or re ...
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Leopard 1
The Leopard 1 (also styled Leopard I, before the Leopard 2 simply known as Leopard) is a main battle tank designed and produced by Porsche in West Germany that first entered service in 1965. Developed in an era when HEAT warheads were thought to make conventional heavy armour of limited value, the Leopard focused on firepower in the form of the German-built version of the United Kingdom, British Royal Ordnance L7, L7 105-mm gun, and improved cross-country performance that was unmatched by other designs of the era. The design started as a collaborative project during the 1950s between West Germany and France, and later joined by Italy, but the partnership ended shortly after and the final design was ordered by the Bundeswehr, with full-scale production starting in 1965. In total, 6,485 Leopard tanks have been built, of which 4,744 were battle tanks and 1,741 were utility and anti-aircraft variants, not including 80 prototypes and pre-series vehicles. The Leopard quickly became a ...
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M48 Patton
The M48 Patton is an American first-generation main battle tank (MBT) introduced in February 1952, being designated as the 90mm Gun Tank: M48. It was designed as a replacement for the M26 Pershing, M4 Sherman, M46 and M47 Patton tanks, and was the main battle tank of the U.S. Army and U.S. Marine Corps in the Vietnam War. Nearly 12,000 M48s were built, mainly by Chrysler and American Locomotive Company, from 1952 to 1961. The M48 Patton was the first U.S. medium gun tank with a four man crew, which replaced the traditional 5 crewmen tanks, a centerline driver's compartment, and no bow machine gun. As with nearly all new armored vehicles it had a wide variety of suspension systems, cupola styles, power packs, fenders and other details among individual tanks. The early designs, up to the M48A2C, were powered by a gasoline engine. The M48A3 and A5 versions used a diesel engine, however, gasoline engine versions were still in use in the US Army National Guard through 1968 a ...
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Rifled
In firearms, rifling is machining helical grooves into the internal (bore) surface of a gun's barrel for the purpose of exerting torque and thus imparting a spin to a projectile around its longitudinal axis during shooting to stabilize the projectile longitudinally by conservation of angular momentum, improving its aerodynamic stability and accuracy over smoothbore designs. Rifling is characterized by its twist rate, which indicates the distance the rifling takes to complete one full revolution, such as "1 turn in 10 inches" (1:10 inches), "1 turn in 254  mm" ("1:254 mm" or "1:25.4 cm)", or the like. Normally, an experienced shooter can infer the units of measurement from the numbers alone. A shorter distance indicates a faster twist, meaning that for a given velocity the projectile will rotate at a higher spin rate. The combination of length, weight, and shape of a projectile determines the twist rate needed to gyroscopically stabilize it – ...
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105mm Tank Gun Rifling
1 (one, unit, unity) is a number representing a single or the only entity. 1 is also a numerical digit and represents a single unit of counting or measurement. For example, a line segment of ''unit length'' is a line segment of length 1. In conventions of sign where zero is considered neither positive nor negative, 1 is the first and smallest positive integer. It is also sometimes considered the first of the infinite sequence of natural numbers, followed by  2, although by other definitions 1 is the second natural number, following  0. The fundamental mathematical property of 1 is to be a multiplicative identity, meaning that any number multiplied by 1 equals the same number. Most if not all properties of 1 can be deduced from this. In advanced mathematics, a multiplicative identity is often denoted 1, even if it is not a number. 1 is by convention not considered a prime number; this was not universally accepted until the mid-20th century. Additionally, 1 is ...
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Budapest
Budapest (, ; ) is the capital and most populous city of Hungary. It is the ninth-largest city in the European Union by population within city limits and the second-largest city on the Danube river; the city has an estimated population of 1,752,286 over a land area of about . Budapest, which is both a city and county, forms the centre of the Budapest metropolitan area, which has an area of and a population of 3,303,786; it is a primate city, constituting 33% of the population of Hungary. The history of Budapest began when an early Celtic settlement transformed into the Roman town of Aquincum, the capital of Lower Pannonia. The Hungarians arrived in the territory in the late 9th century, but the area was pillaged by the Mongols in 1241–42. Re-established Buda became one of the centres of Renaissance humanist culture by the 15th century. The Battle of Mohács, in 1526, was followed by nearly 150 years of Ottoman rule. After the reconquest of Buda in 1686, the ...
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List Of Diplomatic Missions Of The United Kingdom
This is a list of diplomatic missions of the United Kingdom of Great Britain and Northern Ireland, excluding honorary consulates. The UK has one of the largest global networks of diplomatic missions. UK diplomatic missions to capitals of other Commonwealth of Nations member countries are known as High Commissions (headed by 'High Commissioners'). For three Commonwealth countries (namely India, Nigeria, and Pakistan), the Foreign and Commonwealth Office (FCO) still uses the term "Deputy High Commission" for Consulates-General (headed by Deputy High Commissioners), although this terminology is being phased out. British citizens may get help from the embassy of any other commonwealth country present, when in a country where there is no British embassy. There are also informal arrangements with some other countries, including New Zealand and Australia, to help British nationals in some countries. In 2004, the FCO carried out a review of the deployment of its diplomatic missions, and s ...
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Hungarian Revolution Of 1956
The Hungarian Revolution of 1956 (23 October – 10 November 1956; hu, 1956-os forradalom), also known as the Hungarian Uprising, was a countrywide revolution against the government of the Hungarian People's Republic (1949–1989) and the Hungarian domestic policies imposed by the Soviet Union (USSR). The Hungarian Revolution began on 23 October 1956 in Budapest when university students appealed to the civil populace to join them at the Hungarian Parliament Building to protest against the USSR's geopolitical domination of Hungary with the Stalinist government of Mátyás Rákosi. A delegation of students entered the building of Hungarian Radio to broadcast their sixteen demands for political and economic reforms to the civil society of Hungary, but they were instead detained by security guards. When the student protestors outside the radio building demanded the release of their delegation of students, policemen from the ÁVH (Államvédelmi Hatóság) state protection author ...
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Conqueror (tank)
The FV 214 Conqueror, also known as "Tank, Heavy No. 1, 120 mm Gun, Conqueror" was a British heavy tank of the post-World War II era. It was developed as a response to the Soviet IS-3 heavy tank. The Conqueror's main armament, an L1 120 mm gun, was larger than the 20-pounder (83.4 mm) gun carried by its peer, the Centurion. The Conqueror's role was to provide long range anti-tank support for the Centurion. Conquerors were issued at nine for each regiment in Germany, usually grouped in three tank troops. In the British Army both the Conqueror and the Centurion were replaced by the Chieftain. Design and development The chassis was from the A 45 Infantry Support Tank, a project started in 1944 shortly after that of the A 41 Centurion. After the war, the project was relocated to that of the "Universal Tank" design of the FV 200 series. The 200 series was to have used a common hull for all uses (self-propelled artillery, armoured personnel carrier, three varieties ...
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Soviet Union
The Soviet Union,. officially the Union of Soviet Socialist Republics. (USSR),. was a List of former transcontinental countries#Since 1700, transcontinental country that spanned much of Eurasia from 1922 to 1991. A flagship communist state, it was nominally a Federation, federal union of Republics of the Soviet Union, fifteen national republics; in practice, both Government of the Soviet Union, its government and Economy of the Soviet Union, its economy were highly Soviet-type economic planning, centralized until its final years. It was a one-party state governed by the Communist Party of the Soviet Union, with the city of Moscow serving as its capital as well as that of its largest and most populous republic: the Russian Soviet Federative Socialist Republic, Russian SFSR. Other major cities included Saint Petersburg, Leningrad (Russian SFSR), Kyiv, Kiev (Ukrainian Soviet Socialist Republic, Ukrainian SSR), Minsk (Byelorussian Soviet Socialist Republic, Byelorussian SSR), Tas ...
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Heavy Tank
Heavy tank is a term used to define a class of tanks produced from World War I through the end of the Cold War. These tanks generally sacrificed mobility and maneuverability for better armour protection and equal or greater firepower than tanks of lighter classes. Role Heavy tanks achieved their greatest, albeit limited, success when fighting lighter tanks and destroying fortifications. Heavy tanks often saw limited combat in their intended roles, instead becoming mobile pillboxes or defensive positions, such as the German Tiger designs, or the Russian KV designs Design Heavy tanks feature very heavy armor and weapons relative to lighter tanks. Many heavy tanks shared components from lighter tanks. For example, the M103 heavy tank shared many components with lighter Patton tanks, including transmission and engine. As a result, they tend to be either underpowered and comparatively slow, or have engine and drive train reliability issues. In case of an entirely new design deve ...
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M103 Heavy Tank
The M103 Heavy Tank (officially designated 120mm Gun Combat Tank M103, initially T43) was a heavy tank that served in the United States Army and the United States Marine Corps during the Cold War. Introduced in 1957, it served through 1974, by which time evolution of the concept of a main battle tank had rendered heavy tanks obsolete. Design and development In December 1950 the U.S. Army made blueprints for a heavy tank reference design. In January 1951 it awarded Chrysler a $99 million contract to produce the tank. Chrysler tasked Robert T. Keller, the son of Chrysler Board Chairman K.T. Keller, with overseeing its design, and construction at the company's new Newark, Delaware, tank plant. The first T43 pilot model was completed in November 1951. Officials said the tank would "out-slug any land-fighting machine ever built." Like the contemporary British Conqueror, the M103 was designed to counter Soviet heavy tanks, such as the later IS-series tanks or the T-10 if co ...
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IS Tank Family
The IS tanks (russian: ИС) were a series of heavy tanks developed as a successor to the KV-series by the Soviet Union during World War II. The IS acronym is the anglicized initialism of Joseph Stalin (, '). The heavy tanks were designed as a response to the capture of a German Tiger I in 1943. They were mainly designed as breakthrough tanks, firing a heavy high-explosive shell that was useful against entrenchments and bunkers. The IS-2 went into service in April 1944 and was used as a spearhead by the Red Army in the final stage of the Battle of Berlin. The IS-3 served on the Chinese-Soviet border, the Hungarian Revolution, the Prague Spring and on both sides of the Six-Day War. The series eventually culminated in the T-10 heavy tank. Design and production KV-85 IS-85/IS-122 and IS-2 The KV-85 heavy tank was a modification of the KV-1S heavy tank. The tank was a result of the USSR's tank design bureau being torn in two, one half focusing on the KV-85 and its variants, ...
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