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M141 Bunker Defeat Munition
The M141 Bunker Defeat Munition (BDM) is a disposable single-shot, shoulder-fired rocket launcher designed to defeat hardened structures. It is a modification of the United States Marine Corps Mk 153 Shoulder-Launched Multipurpose Assault Weapon (SMAW) and is also called the SMAW-D (where 'D' is for 'Disposable'). It was designed to fill the void in the United States Army inventory of a "bunker buster" weapon. Design The SMAW-D operates on the principle that the recoil created by launching the rocket is counteracted by a "backblast" of gases fired from the rear of the weapon. This makes the SMAW-D inherently dangerous, especially in confined, urban areas, as is with all weapons of this design. The M141 has two configurations: a carry mode in which the launcher is long, and a ready to fire mode in which the launcher is extended to its full length of . The warhead is the same High-explosive, dual-purpose (HEDP) as the USMC SMAW. It is effective against masonry and concrete bunk ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
M141 Bunker Defeat Munition
The M141 Bunker Defeat Munition (BDM) is a disposable single-shot, shoulder-fired rocket launcher designed to defeat hardened structures. It is a modification of the United States Marine Corps Mk 153 Shoulder-Launched Multipurpose Assault Weapon (SMAW) and is also called the SMAW-D (where 'D' is for 'Disposable'). It was designed to fill the void in the United States Army inventory of a "bunker buster" weapon. Design The SMAW-D operates on the principle that the recoil created by launching the rocket is counteracted by a "backblast" of gases fired from the rear of the weapon. This makes the SMAW-D inherently dangerous, especially in confined, urban areas, as is with all weapons of this design. The M141 has two configurations: a carry mode in which the launcher is long, and a ready to fire mode in which the launcher is extended to its full length of . The warhead is the same High-explosive, dual-purpose (HEDP) as the USMC SMAW. It is effective against masonry and concrete bunk ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Alliant Techsystems
Alliant Techsystems Inc. (ATK) was an American aerospace, defense, and sporting goods company with its headquarters in Arlington County, Virginia, in the United States. The company operated in 22 states, Puerto Rico, and other countries. ATK's revenue in the 2014 fiscal year was about US$4.78 billion. On April 29, 2014, ATK announced that it would spin off its Sporting Group and merge its Aerospace and Defense Groups with Orbital Sciences Corporation. The spinoff of the Sporting Group to create Vista Outdoor and the merger leading to the creation of Orbital ATK were completed on February 9, 2015; both companies began operations as separate entities on February 20, 2015. History ATK was launched as an independent company in 1990, when Honeywell spun off its defense businesses to shareholders. The former Honeywell businesses had supplied defense products and systems to the U.S. and its allies for 50 years, including the first electronic autopilot for B-17 aircraft's bombing miss ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Rocket Weapons Of The United States
A rocket (from it, rocchetto, , bobbin/spool) is a vehicle that uses jet propulsion to accelerate without using the surrounding air. A rocket engine produces thrust by reaction to exhaust expelled at high speed. Rocket engines work entirely from propellant carried within the vehicle; therefore a rocket can fly in the vacuum of space. Rockets work more efficiently in a vacuum and incur a loss of thrust due to the opposing pressure of the atmosphere. Multistage rockets are capable of attaining escape velocity from Earth and therefore can achieve unlimited maximum altitude. Compared with airbreathing engines, rockets are lightweight and powerful and capable of generating large accelerations. To control their flight, rockets rely on momentum, airfoils, auxiliary reaction engines, gimballed thrust, momentum wheels, deflection of the exhaust stream, propellant flow, spin, or gravity. Rockets for military and recreational uses date back to at least 13th-century China. Significant ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
2021–2022 Russo-Ukrainian Crisis
In March and April 2021, Russian president Vladimir Putin ordered the Russian military to begin massing thousands of personnel and equipment near its border with Ukraine and in Crimea, representing the largest mobilization since the annexation of Crimea in 2014. This precipitated an international crisis due to concerns over a potential invasion. Satellite imagery showed movements of armour, missiles, and heavy weaponry. The troops were partially withdrawn by June 2021, but the crisis was renewed in October and November 2021, when over 100,000 Russian troops were massed around Ukraine on three sides by December. Despite the Russian military build-ups, Russian officials from November 2021 to 20 February 2022 repeatedly denied that Russia had plans to invade Ukraine. The crisis is related to the ongoing (2014–present) War in Donbas, which is in turn part of the Russo-Ukrainian War. In December 2021, Russia advanced two draft treaties that contained requests for what it refe ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
2022 Russian Invasion Of Ukraine
On 24 February 2022, in a major escalation of the Russo-Ukrainian War, which began in 2014. The invasion has resulted in tens of thousands of deaths on both sides. It has caused Europe's largest refugee crisis since World War II. An estimated 8 million Ukrainians were displaced within their country by late May and 7.8 million fled the country by 8 November 2022, while Russia, within five weeks of the invasion, experienced its greatest emigration since the 1917 October Revolution. Following the 2014 Ukrainian Revolution, Russia annexed Crimea, and Russian-backed paramilitaries seized part of the Donbas region of south-eastern Ukraine, which consists of Luhansk and Donetsk oblasts, sparking a regional war. In March 2021, Russia began a large military build-up along its border with Ukraine, eventually amassing up to 190,000 troops and their equipment. Despite the build-up, denials of plans to invade or attack Ukraine were issued by various Russian gove ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Al Qaeda
Al-Qaeda (; , ) is an Islamic extremist organization composed of Salafist jihadists. Its members are mostly composed of Arabs, but also include other peoples. Al-Qaeda has mounted attacks on civilian and military targets in various countries, including the 1998 United States embassy bombings, the September 11 attacks, and the 2002 Bali bombings; it has been designated as a terrorist group by the United Nations Security Council, the North Atlantic Treaty Organization (NATO), the European Union, India, and various other countries. The organization was founded in 1988 by Osama bin Laden and other volunteers during the Soviet–Afghan War. Following the withdrawal of the Soviets in 1989, bin Laden offered '' mujahideen'' support to Saudi Arabia in the Gulf War in 1990–1991. His offer was rebuffed by the Saudi authorities, which instead sought the aid of the United States. The stationing of U.S. troops in Saudi Arabia prompted bin Laden to subsequently wage '' jihad'' agai ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Taliban
The Taliban (; ps, طالبان, ṭālibān, lit=students or 'seekers'), which also refers to itself by its state (polity), state name, the Islamic Emirate of Afghanistan, is a Deobandi Islamic fundamentalism, Islamic fundamentalist, militant Islamism, Islamist, Jihadism, jihadist, and Pashtun nationalism, Pashtun nationalist political movement in Afghanistan. It ruled approximately three-quarters of the country Islamic Emirate of Afghanistan (1996–2001), from 1996 to 2001, before being overthrown following the United States invasion of Afghanistan, United States invasion. It Fall of Kabul (2021), recaptured Kabul on 15 August 2021 after nearly 20 years of Taliban insurgency, insurgency, and currently controls all of the country, although its government has Recognition of the Islamic Emirate of Afghanistan, not yet been recognized by any country. The Taliban government has been criticized for restricting human rights in Afghanistan, including the right of women in Afgh ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Battle Of Tora Bora
The Battle of Tora Bora was a military engagement that took place in the cave complex of Tora Bora, eastern Afghanistan, from December 6–17, 2001, during the opening stages of the United States invasion of Afghanistan. It was launched by the United States and its allies with the objective to capture or kill Osama bin Laden, the founder and leader of the militant organization al-Qaeda. Al-Qaeda and bin Laden were suspected of being responsible for the September 11 attacks three months prior. Tora Bora ( ps, تورا بورا; ''Black Cave'') is located in the Spīn Ghar mountain range near the Khyber Pass. The U.S. stated that al-Qaeda had its headquarters there and that it was bin Laden's location at the time. Background In Operation Cyclone during the early 1980s, CIA officers had assisted the mujahideen in extending and shoring up the caves to use for resistance during the Soviet invasion of Afghanistan. The U.S. then supported their effort. Several years later, the Taliba ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
United States Army Rangers
United States Army Rangers, according to the US Army's definition, are personnel, past or present, in any unit that has the official designation "Ranger". The term is commonly used to include graduates of the US Army Ranger School, even if they never served in a "Ranger" unit. The vast majority of Ranger school graduates never serve in Ranger units and are considered "Ranger qualified". In a broader and less formal sense, the term "ranger" has been used, officially and unofficially, in North America since the 17th century, to describe light infantry in small, independent units—usually companies. The first units to be officially designated Rangers were companies recruited in the colonies of New England by the colonial militia to fight in King Philip's War (1676). Following that time, the term became more common in official usage, during the French and Indian Wars of the 18th century. The US military has had "Ranger" companies since the American Revolution. British units late ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
High-explosive Anti-tank
High-explosive anti-tank (HEAT) is the effect of a shaped charge explosive that uses the Munroe effect to penetrate heavy armor. The warhead functions by having an explosive charge collapse a metal liner inside the warhead into a high-velocity explosively formed penetrator (EFP) jet; this is capable of penetrating armor steel to a depth of seven or more times the diameter of the charge (charge diameters, CD). The EFPs jet effect is purely kinetic in nature; the round has no explosive or incendiary effect on the target. Because they rely on the kinetic energy of the EFP jet for their penetration performance, HEAT warheads do not have to be delivered with high velocity, as an armor-piercing round does. Thus they generate less recoil. The performance of HEAT weapons has nothing to do with thermal effects, with HEAT being simply an acronym. History HEAT warheads were developed during World War II, from extensive research and development into shaped charge warheads. Shaped char ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
