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Vickers Vigilant
The Vickers Vigilant was a British 1960s era MCLOS wire-guided anti-tank missile used by the British Army. It was also licence-built in the United States by Clevite for the US Marine Corps, and sometimes known as Clevite rounds in this case. It had a short service life, and replacement by the Swingfire began in the mid-1960s. History Vigilant was a private development begun in 1956 by Vickers-Armstrongs' Guided Weapons Department at Brooklands, Surrey for the anti-tank role in the British Army, the name being formed from ''VI''sually ''G''uided ''I''nfantry ''L''ight ''AN''ti-''T''ank missile. Vigilant was wire-guided, optically tracked and manually guided, like the missile it replaced in service, the Malkara. In contrast to that system, however, Vigilant included a more sophisticated guidance system that imparted changes in velocity that produced a much smoother and more predictable motion, whereas the Malkara was considered difficult to accurately guide. The same system was r ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Wire-guided
A wire-guided missile is a missile that is guided by signals sent to it via thin wires connected between the missile and its guidance mechanism, which is located somewhere near the launch site. As the missile flies, the wires are reeled out behind it (command guidance). This guidance system is most commonly used in anti-tank missiles, where its ability to be used in areas of limited line-of-sight make it useful, while the range limit imposed by the length of the wire is not a serious concern. The longest range wire-guided missiles in current use are limited to about . History Electrical wire guidance dates back to the early 20th century with an early example being the John_Lay, Lay Torpedo. A prototype ground-based electrical wire-guided torpedo was built by the Germany, Germans during World War II. The pair of deployed German guided air-delivered ordnance designs, the Fritz X and Henschel Hs 293, both used the Kehl-Strasbourg radio control link, ''Kehl-Straßburg'' radio gu ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Ferret Armoured Car
The Ferret armoured car, also commonly called the Ferret scout car, is a British armoured fighting vehicle designed and built for reconnaissance purposes. The Ferret was produced between 1952 and 1971 by the UK company Daimler. It was widely used by regiments in the British Army, as well as the RAF Regiment and Commonwealth countries throughout the period. History The Ferret was developed in 1949 as a result of a British Army requirement issued in 1947. 'Light reconnaissance cars' existed during the Second World War, notably the Daimler Dingo. Given its experience with the successful Dingo (6,626 produced and one of two British AFVs produced throughout WWII) Daimler was awarded a development contract in October 1948, and in June 1950 the first prototype of the Car, Scout, 4×4, Liaison (Ferret) Mark 1 was delivered. Designated the FV 701(C), it was one of several versions resembling the original Daimler scout cars, and represented the basic model Ferret. This shared many si ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Kuwait Army
The Kuwait Army, established in 1949, is the oldest armed branch among the military of Kuwait. Its cavalry and infantry predecessors operated in desert and metropolitan areas in 1919, 1920 and 1928 to 1938, tracing their roots directly to the cavalrymen and infantrymen that defended Al-Kout Fortress since the 19th century along with various mounted defensive forces. The "Kuwait Army" was later established as the Kuwait Land Force, which became the principal land force of the Kuwait Armed Forces. History The Kuwait Army was created in 1949 by Field Marshal Sheikh Abdullah Mubarak Al-Sabah (1949–1961) during the time when its partnership was included part of the Directorate of Public Security Force in 1938 prior to splitting in 1953. As Sheikh Abdullah Mubarak Al-Sabah headed the Directorate of Public Security Force which included the Kuwait Army; the later, was headed by deputy commander Colonel Mubarak Abdullah Al-Jaber Al-Sabah. In 1990 and 1991, during the first Gulf War ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Finnish Army
The Finnish Army (Finnish: ''Maavoimat'', Swedish: ''Armén'') is the land forces branch of the Finnish Defence Forces. The Finnish Army is divided into six branches: the infantry (which includes armoured units), field artillery, anti-aircraft artillery, engineers, signals, and materiel troops. The commander of the Finnish Army since 1 January 2022 is Lieutenant General Pasi Välimäki. Role The duties of the Finnish Army are threefold. They are: [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
United Arab Emirates Army
The United Arab Emirates Army is the land force branch of the United Arab Emirates Armed Forces. History From January 1993 to April 1994, UAE Armed Forces participated in humanitarian operations in Somalia under the United Task Force (UNITAF) and UN Operation in Somalia II (UNOSOM II). UAE land forces supplied a 640-man group in four rotations during this period. UAE and its Land Forces participated in the NATO-led International Security Assistance Force (ISAF) mission (2001-2014) and committed to contribute to the follow-on mission of ISAF; the Operation Resolute Support. During the 2015 Yemeni Civil War the United Arab Emirates Army (together with other GCC soldiers) intervened in support of fighters loyal to the ousted regime of Abd Rabbuh Mansur Hadi against Houthi militants. UAE troops assisted anti-Houthi fighters in the re-taking of Aden and Al Anad Air Base. On 4 September 2015 the army lost 52 soldiers in war in Yemen to a tactical ballistic missile strike. UAE has ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Vigilant Operators
Vigilant can refer to: Ships * ''Vigilant'' (1790s Baltimore schooner), an American schooner that carried the mail and passenger traffic in the Danish West Indies for 130 years * ''Vigilant'' (S 618), a French Navy ballistic missile submarine * ''Vigilant'' (yacht), an American yacht, the winner of the 1893 America's Cup yacht race * CGS ''Vigilant'', a Canadian armed third-class cruiser and Great Lakes fisheries protection vessel * HMC ''Vigilant, a British customs cutter of HM Customs and Excise * HMRC ''Vigilant'', two ships and a number of cutters of the British HM Customs and Excise * HMS ''Vigilant'', a number of ships of the British Royal Navy * HSV ''Vigilant'' (JHSV-2), a ship of the United States Navy-led joint high-speed vessel program, later renamed * , more than one ship of the United States Coast Guard * , more than one ship of the United States Revenue-Marine and United States Revenue Cutter Service * , more than one ship of the United States Navy * Vigilant ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Rockwell Hardness
The Rockwell scale is a hardness scale based on indentation hardness of a material. The Rockwell test measures the depth of penetration of an indenter under a large load (major load) compared to the penetration made by a preload (minor load). There are different scales, denoted by a single letter, that use different loads or indenters. The result is a dimensionless number noted as HRA, HRB, HRC, etc., where the last letter is the respective Rockwell scale. When testing metals, indentation hardness correlates linearly with tensile strength. History The differential depth hardness measurement was conceived in 1908 by Viennese professor Paul Ludwik in his book ''Die Kegelprobe'' (crudely, "the cone test"). The differential-depth method subtracted out the errors associated with the mechanical imperfections of the system, such as backlash and surface imperfections. The Brinell hardness test, invented in Sweden, was developed earlier – in 1900 – but it was slow, not us ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Shaped Charge
A shaped charge is an explosive charge shaped to form an explosively formed penetrator (EFP) to focus the effect of the explosive's energy. Different types of shaped charges are used for various purposes such as cutting and forming metal, initiating nuclear weapons, penetrating armor, or perforating wells in the oil and gas industry. A typical modern shaped charge, with a metal liner on the charge cavity, can penetrate armor steel to a depth of seven or more times the diameter of the charge (charge diameters, CD), though greater depths of 10 CD and above have been achieved. Contrary to a misconception (possibly resulting from the acronym for ''high-explosive anti-tank'', HEAT) the shaped charge EFP jet does not depend in any way on heating or melting for its effectiveness; that is, the EFP jet from a shaped charge does not melt its way through armor, as its effect is purely kinetic in nature – however the process does create significant heat and often has a significant ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Entac
ENTAC ("Engin Téléguidé Anti-Char") or MGM-32A was a French MCLOS wire-guided Anti-tank missile. Developed in the early 1950s, the weapon entered service with the French army in 1957. Production ended in 1974 after approximately 140,000 had been built. Development The missile was developed by the French Government agency - DTAT (''Direction Technique des Armements Terrestres'') at the same time as the private industry SS.10. Development time for the ENTAC was longer than the SS.10, so it did not enter service until 1957. It proved to be a great improvement over the SS.10, which had entered production five years earlier. Once fully developed and tested, production of the ENTAC was given to the firm of Aerospatiale. The ENTAC was designed to be a man-portable weapon or operated from a small vehicle like the Jeep, replacing the Nord SS.10 in French service. Design The missile is launched from a simple metal box, which is connected to an operator station. An individual operato ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Gyroscope
A gyroscope (from Ancient Greek γῦρος ''gŷros'', "round" and σκοπέω ''skopéō'', "to look") is a device used for measuring or maintaining orientation and angular velocity. It is a spinning wheel or disc in which the axis of rotation (spin axis) is free to assume any orientation by itself. When rotating, the orientation of this axis is unaffected by tilting or rotation of the mounting, according to the conservation of angular momentum. Gyroscopes based on other operating principles also exist, such as the microchip-packaged MEMS gyroscopes found in electronic devices (sometimes called gyrometers), solid-state ring lasers, fibre optic gyroscopes, and the extremely sensitive quantum gyroscope. Applications of gyroscopes include inertial navigation systems, such as in the Hubble Space Telescope, or inside the steel hull of a submerged submarine. Due to their precision, gyroscopes are also used in gyrotheodolites to maintain direction in tunnel mining. Gyroscopes ca ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Stadiametric Rangefinding
Stadiametric rangefinding, or the stadia method, is a technique of measuring distances with a telescopic instrument. The term stadia comes from a Greek unit of length '' Stadion'' (equal to 600 Greek feet, ''pous'') which was the typical length of a sports stadium of the time. Stadiametric rangefinding is used for surveying and in the telescopic sights of firearms, artillery pieces, or tank guns, as well as some binoculars and other optics. It is still widely used in long-range military sniping, but in many professional applications it is being replaced with microwave, infrared, or laser rangefinding methods. Although much easier to use, electronic rangefinders can give away the shooter's position to a well-equipped adversary, and the need for accurate range estimation existed for much longer than electronic rangefinders small and rugged enough to be suitable for military use. Principle The stadia method is based upon the principle of similar triangles. This means that, ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Monocular
A monocular is a compact refracting telescope used to magnify images of distant objects, typically using an optical prism to ensure an erect image, instead of using relay lenses like most telescopic sights. The volume and weight of a monocular are typically less than half of a pair of binoculars with similar optical properties, making it more portable and also less expensive. This is because binoculars are essentially a pair of monoculars packed together — one for each eye. As a result, monoculars only produce two-dimensional images, while binoculars can use two parallaxed images (each for one eye) to produce binocular vision, which allows stereopsis and depth perception. Monoculars are ideally suited to those application where three-dimensional perception is not needed, or where compactness and low weight are important (e.g. hiking). Monoculars are also sometimes preferred where difficulties occur using both eyes through binoculars due to significant eyesight variation ( ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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