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Merkava Tank
The Merkava ( he, מרכבה, , "chariot") is a series of main battle tanks used by the Israel Defense Forces and the backbone of the IDF's armored corps. The tank began development in 1970, and its first generation, the Merkava mark 1, entered official service in 1979. Four main variants have been deployed. , Merkava mark 4 is the latest version. The Merkava was first used extensively in the 1982 Lebanon War. The name "Merkava" was derived from the IDF's initial development program name. The tank was developed in the Merkava and Armored Combat Vehicles Division of the Israeli Ministry of Defense, and most of its parts are manufactured in Israel. The Merkava was designed to provide maximum protection for its crew, and therefore its front armor was fortified and the engine placed in the front part of the tank, unlike most other tanks. Design criteria include rapid repair of battle damage, survivability, cost-effectiveness, and off-road performance. Following the model of contem ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Trophy (countermeasure)
Trophy (Israel Defense Forces designation מעיל רוח, lit. "Windbreaker") is a military active protection system (APS) designed to protect vehicles from anti-tank guided missiles (ATGMs), rocket-propelled grenades (RPGs), :Anti-tank rockets, anti-tank rockets, and high-explosive anti-tank (HEAT) rounds. A small number of explosively formed projectiles destroy incoming threats before they hit the vehicle. Its principal purpose is to supplement the armour of light and heavy armored fighting vehicles. Developed by Rafael Advanced Defense Systems Ltd. of Israel and currently fielding over 1,000 systems to all major Israeli ground combat platforms (Merkava Mark 3 & 4 and Namer APCs), and U.S. Abrams M1A1/2, and tested on the Stryker APCs and Bradley Fighting Vehicles (BFVs). Trophy protects against a wide variety of anti-tank threats, while also maximizing the vehicle's ability to identify enemy location to crews and combat formation, thereby providing greater survivability and ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
ATGM
An anti-tank guided missile (ATGM), anti-tank missile, anti-tank guided weapon (ATGW) or anti-armor guided weapon is a guided missile primarily designed to hit and destroy heavily armored military vehicles. ATGMs range in size from shoulder-launched weapons, which can be transported by a single soldier, to larger tripod-mounted weapons, which require a squad or team to transport and fire, to vehicle and aircraft mounted missile systems. Earlier man-portable anti-tank weapons like anti-tank rifles and magnetic anti-tank mines, generally had very short range, sometimes on the order of metres or tens of metres. Rocket-propelled high-explosive anti-tank (HEAT) systems appeared in World War II and extended range to the order of hundreds of metres, but accuracy was low and hitting targets at these ranges was largely a matter of luck. It was the combination of rocket propulsion and remote wire guidance that made the ATGM much more effective than these earlier weapons, and gave lig ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Ministry Of Defense (Israel)
The Ministry of Defense ( he, מִשְׂרַד הַבִּטָּחוֹן, Misrad HaBitahon, Ministry of Security, acronym: he, משהב"ט) of the government of Israel, is the governmental department responsible for defending the State of Israel from internal and external military threats. Its political head is the Defense Minister of Israel, and its offices are located in HaKirya, Tel Aviv. The Ministry of Defense oversees most of the Israeli security forces, including the Israel Defense Forces (IDF), Israel Military Industries (IMI), and Israel Aerospace Industries (IAI). The MOD was established when the British Mandate of Palestine ended, and the British Army departed Palestine and the State of Israel was formed. This ended the rag-tag militia units during British rule and gave way to the formal defense of the Jewish state. Minister of Defense The Defense Minister of Israel ( he, שַׂר הַבִּטָּחוֹן, ''Sar HaBitahon'', ''lit.'' Minister of Security) hea ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Main Battle Tank
A main battle tank (MBT), also known as a battle tank or universal tank, is a tank that fills the role of armor-protected direct fire and maneuver in many modern armies. Cold War-era development of more powerful engines, better suspension systems and lighter-weight composite armor allowed the design of a tank that had the firepower of a super-heavy tank, the armor protection of a heavy tank, and the mobility of a light tank, in a package with the weight of a medium tank. Through the 1960s and 1970s, the MBT replaced almost all other types of tanks, leaving only some specialist roles to be filled by lighter designs or other types of armored fighting vehicles. Main battle tanks are a key component of modern armies.#House1984, House (1984), ''Toward Combined Arms Warfare: A Survey of 20th-Century Tactics, Doctrine, and Organization'' Modern MBTs seldom operate alone, as they are organized into armoured units that include the support of infantry, who may accompany the tanks in inf ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Chariot
A chariot is a type of cart driven by a charioteer, usually using horses to provide rapid motive power. The oldest known chariots have been found in burials of the Sintashta culture in modern-day Chelyabinsk Oblast, Russia, dated to c. 2000 BCE. The critical invention that allowed the construction of light, horse-drawn chariots was the spoked wheel. The chariot was a fast, light, open, two-wheeled conveyance drawn by two or more horses that were hitched side by side, and was little more than a floor with a waist-high guard at the front and sides. It was initially used for ancient warfare during the Bronze and Iron Ages, but after its military capabilities had been superseded by light and heavy cavalries, chariots continued to be used for travel and transport, in processions, for games, and in races. Etymology The word "chariot" comes from the Latin term ''carrus'', a loanword from Gaulish. In ancient Rome and some other ancient Mediterranean civilizations, a ''biga'' re ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Hp/tonne
Power-to-weight ratio (PWR, also called specific power, or power-to-mass ratio) is a calculation commonly applied to engines and mobile power sources to enable the comparison of one unit or design to another. Power-to-weight ratio is a measurement of actual performance of any engine or power source. It is also used as a measurement of performance of a vehicle as a whole, with the engine's power output being divided by the weight (or mass) of the vehicle, to give a metric that is independent of the vehicle's size. Power-to-weight is often quoted by manufacturers at the peak value, but the actual value may vary in use and variations will affect performance. The inverse of power-to-weight, weight-to-power ratio (power loading) is a calculation commonly applied to aircraft, cars, and vehicles in general, to enable the comparison of one vehicle's performance to another. Power-to-weight ratio is equal to thrust per unit mass multiplied by the velocity of any vehicle. Power-to-weight ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Diesel Engine
The diesel engine, named after Rudolf Diesel, is an internal combustion engine in which ignition of the fuel is caused by the elevated temperature of the air in the cylinder due to mechanical compression; thus, the diesel engine is a so-called compression-ignition engine (CI engine). This contrasts with engines using spark plug-ignition of the air-fuel mixture, such as a petrol engine (gasoline engine) or a gas engine (using a gaseous fuel like natural gas or liquefied petroleum gas). Diesel engines work by compressing only air, or air plus residual combustion gases from the exhaust (known as exhaust gas recirculation (EGR)). Air is inducted into the chamber during the intake stroke, and compressed during the compression stroke. This increases the air temperature inside the cylinder to such a high degree that atomised diesel fuel injected into the combustion chamber ignites. With the fuel being injected into the air just before combustion, the dispersion of the fuel is une ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Turbocharger
In an internal combustion engine, a turbocharger (often called a turbo) is a forced induction device that is powered by the flow of exhaust gases. It uses this energy to compress the intake gas, forcing more air into the engine in order to produce more power for a given displacement. The current categorisation is that a turbocharger is powered by the kinetic energy of the exhaust gasses, whereas a supercharger is mechanically powered (usually by a belt from the engine's crankshaft). However, up until the mid-20th century, a turbocharger was called a "turbosupercharger" and was considered a type of supercharger. History Prior to the invention of the turbocharger, |
GlobalSecurity
GlobalSecurity.org is an American nonpartisan, independent, nonprofit organization that serves as a think tank, and research and consultancy group. Focus The site is focused on national and international security issues; military analysis, systems, and strategies; intelligence matters; and space policy analysis. History It was founded in December 2000 by John Pike, who had worked since 1983 with the Federation of American Scientists, where he directed the space policy, cyberstrategy, military analysis, nuclear resource, and intelligence resource projects. GlobalSecurity.org is headquartered in the Washington, D.C. metropolitan area in Alexandria, Virginia, and Pike remains as its director. The website's target audience includes journalists, policy-makers, scholars, political scientists, military and defense personnel, and the public. It supplies background information and developing news stories, providing online analysis and articles that analyze what are sometimes little-disc ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Sloped Armour
Sloped armour is armour that is neither in a vertical nor a horizontal position. Such angled armour is typically mounted on tanks and other armoured fighting vehicles (AFVs), as well as naval vessels such as battleships and cruisers. Sloping an armour plate makes it more difficult to penetrate by anti-tank weapons, such as armour-piercing shells ( kinetic energy penetrators) and rockets, if they follow a more or less horizontal trajectory to their target, as is often the case. The improved protection is caused by three main effects. First, a projectile hitting a plate at an angle other than 90° has to move through a greater thickness of armour, compared to hitting the same plate at a right-angle. In the latter case only the plate thickness (the normal to the surface of the armour) must be pierced. Increasing the armour slope improves, for a given plate thickness, the level of protection at the point of impact by increasing the thickness measured in the horizontal plane, the angle ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Composite Armour
Composite armour is a type of vehicle armour consisting of layers of different material such as metals, plastics, ceramics or air. Most composite armours are lighter than their all-metal equivalent, but instead occupy a larger volume for the same resistance to penetration. It is possible to design composite armour stronger, lighter and less voluminous than traditional armour, but the cost is often prohibitively high, restricting its use to especially vulnerable parts of a vehicle. Its primary purpose is to help defeat high-explosive anti-tank (HEAT) projectiles. HEAT had posed a serious threat to armoured vehicles since its introduction in World War II. Lightweight and small, HEAT projectiles could nevertheless penetrate hundreds of millimetres of the most resistant steel armours. The capability of most materials for defeating HEAT follows the "density law", which states that the penetration of shaped charge jets is proportional to the square root of the shaped charge liner dens ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Smoke Grenade
Smoke grenades used at demonstrations in Paris, 2008 upBritish L83A1 Smoke Grenade manufactured in May 2008. This grenade has already been used. A smoke grenade is a canister-type grenade used as a signaling device, target or landing zone marking device, or as a screening device for unit movements. Smoke grenades generally emit a far larger amount of smoke than smoke bombs, which are a type of fireworks typically started with an external fuse rather than a pin and are more complex. Smoke grenades often cost around compared to smoke bombs, which can often cost just a few cents. The phrase "to smoke", meaning to fake, bluff, or beat around the bush, comes from the military usage of smoke grenades to obscure and conceal movement; similarly, "pop smoke", derived from a common way of ordering the use of smoke grenades, is used as a slang term for quickly leaving a place. __TOC__ Design left, Diagram and cross section of an AN M18 smoke grenade A typical design consists of a ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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